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TS4962M 3W Filter-free Class D Audio Power Amplifier Operating from VCC = 2.4V to 5.5V Standby mode active low Output power: 3W into 4 and 1.75W into 8 with 10% THD+N max and 5V power supply. Output power: 2.3W @5V or 0.75W @ 3.0V into 4 with 1% THD+N max. Output power: 1.4W @5V or 0.45W @ 3.0V into 8 with 1% THD+N max. Adjustable gain via external resistors Low current consumption 2mA @ 3V Efficiency: 88% typ. Signal to noise ratio: 85dB typ. PSRR: 63dB typ. @217Hz with 6dB gain PWM base frequency: 250kHz Low pop & click noise Pin connections IN+ 1/A1 VDD 4/B1 IN7/C1 GND 2/A2 VDD 5/B2 STBY 8/C2 OUT3/A3 GND 6/B3 OUT+ 9/C3 IN+: positive differential input IN-: negative differential input VDD: analog power supply GND: power supply ground STBY: standby pin (active low) OUT+: positive differential output OUT-: negative differential output Block diagram B1 Vcc C2 Stdby 300k Internal Bias 150k Out+ C3 Output PWM H Bridge A3 OutB2 Thermal shutdown protection Available in flip-chip 9 x 300m (Pb-free) C1 InIn+ A1 + 150k Description The TS4962M is a differential Class-D BTL power amplifier. It is able to drive up to 2.3W into a 4 load and 1.4W into a 8 load at 5V. It achieves outstanding efficiency (88%typ.) compared to classical Class-AB audio amps. The gain of the device can be controlled via two external gain-setting resistors. Pop & click reduction circuitry provides low on/off switch noise while allowing the device to start within 5ms. A standby function (active low) allows the reduction of current consumption to 10nA typ. Oscillator GND A2 B3 Applications Cellular Phone PDA Notebook PC Order Codes Part Number TS4962MEIJT Temperature Range -40, +85C Package Lead-Free Flip-Chip Packing Tape & Reel Marking 62 December 2005 Rev 3 1/32 www.st.com 32 Absolute Maximum Ratings TS4962M 1 Absolute Maximum Ratings Table 1. Symbol VCC Vin Toper Tstg Tj Rthja Pdiss ESD ESD Latch-up VSTBY Key parameters and their absolute maximum ratings Parameter Supply Voltage(1), (2) Input Voltage (3) Operating Free-Air Temperature Range Storage Temperature Maximum Junction Temperature Thermal Resistance Junction to Ambient (4) Power Dissipation Human Body Model Machine Model Latch-up Immunity Standby Pin Voltage Maximum Voltage (6) Lead Temperature (soldering, 10sec) Value 6 GND to VCC -40 to + 85 -65 to +150 150 200 Internally Limited(5) 2 200 200 GND to VCC 260 kV V mA V C Unit V V C C C C/W 1. Caution: This device is not protected in the event of abnormal operating conditions, such as for example, shortcircuiting between any one output pin and ground, between any one output pin and VCC, and between individual output pins. 2. All voltages values are measured with respect to the ground pin. 3. The magnitude of input signal must never exceed VCC + 0.3V / GND - 0.3V. 4. Device is protected in case of over temperature by a thermal shutdown active @ 150C. 5. Exceeding the power derating curves during a long period, involves abnormal operating condition. 6. The magnitude of standby signal must never exceed VCC + 0.3V / GND - 0.3V. Table 2. Symbol VCC VIC VSTBY RL Rthja Operating conditions Parameter Supply Voltage(1) Common Mode Input Voltage Range(2) Standby Voltage Input: (3) Device ON Device OFF Load Resistor Thermal Resistance Junction to Ambient (5) 1.4 VSTBY VCC GND VSTB 0.4 (4) 4 90 V C/W Value 2.4 to 5.5 0.5 to VCC - 0.8 Unit V V 1. For VCC from 2.4V to 2.5V, the operating temperature range is reduced to 0C Tamb 70C. 2. For VCC from 2.4V to 2.5V, the common mode input range must be set at VCC/2. 3. Without any signal on VSTBY, the device will be in standby. 4. Minimum current consumption shall be obtained when VSTBY = GND. 5. With heat sink surface = 125mm2. 2/32 TS4962M Application Component Information 2 Application Component Information Table 3. Component information Functional Description Bypass supply capacitor. To install as close as possible to the TS4962M to minimize high-frequency ripple. A 100nF ceramic capacitor should be added to enhance the power supply filtering at high frequency. Input resistor to program the TS4962M differential gain (Gain = 300k/Rin with Rin in k). Thanks to common mode feedback, these input capacitors are optional. However, they can be added to form with Rin a 1st order high pass filter with -3dB cut-off frequency = 1/(2**Rin*Cin). Component Cs Rin Input Capacitor Figure 1. Typical application schematics Vcc Vcc B1 Vcc C2 Stdby 300k Internal Bias 150k B2 In+ Cs 1u Out+ C3 Output PWM H Bridge GND GND GND + Rin C1 InIn+ Differential Input InA1 Rin Input capacitors are optional + 150k Oscillator SPEAKER A3 Out- GND GND TS4962 B3 A2 GND Vcc Vcc B1 Vcc C2 Stdby 300k Internal Bias 150k B2 In+ Cs 1u 4 Ohms LC Output Filter Out+ C3 Output PWM H Bridge GND GND GND 15H + Rin C1 InIn+ Differential Input InA1 Rin + 150k Oscillator 2F GND Load Input capacitors are optional GND A3 Out- 2F 15H GND TS4962 A2 B3 GND 30H 1F GND 1F 30H 8 Ohms LC Output Filter 3/32 Electrical Characteristics TS4962M 3 Table 4. Symbol ICC ISTBY VOO Electrical Characteristics VCC = +5V, GND = 0V, VIC = 2.5V, Tamb = 25C (unless otherwise specified) Parameter Supply Current (1) Conditions No input signal, no load Min. Typ. 2.3 10 3 2.3 3 1.4 1.75 1 0.4 78 88 63 Max. 3.3 1000 25 Unit mA nA mV No input signal, VSTBY = GND Standby Current Output Offset Voltage No input signal, RL = 8 G=6dB THD = 1% Max, F = 1kHz, RL = 4 THD = 10% Max, F = 1kHz, RL = 4 THD = 1% Max, F = 1kHz, RL = 8 THD = 10% Max, F = 1kHz, RL = 8 Pout = 900mWRMS, G = 6dB, 20Hz < F < 20kHz RL = 8 + 15H, BW < 30kHz Pout = 1WRMS, G = 6dB, F = 1kHz, RL = 8 + 15H, BW < 30kHz Pout = 2WRMS, RL = 4 + 15H Pout =1.2WRMS, RL = 8+ 15H F = 217Hz, RL = 8, G=6dB, Vripple = 200mVpp F = 217Hz, RL = 8, G = 6dB, Vicm = 200mVpp Rin in k 273k ----------------R in Pout Output Power W THD + N Total Harmonic Distortion + Noise % Efficiency Efficiency Power Supply Rejection Ratio with Inputs Grounded (2) Common Mode Rejection Ratio Gain Value % PSRR dB CMRR Gain RSTBY FPWM SNR tWU tSTBY 57 300k ----------------R in 327k ----------------R in dB V/V k kHz dB ms ms VN Internal Resistance from Standby to GND Pulse Width Modulator Base Frequency Signal to Noise Ratio A Weighting, Pout = 1.2W, RL = 8 Wake-up Time Standby Time F = 20Hz to 20kHz, G = 6dB Unweighted RL = 4 A weighted RL = 4 Unweighted RL = 8 A weighted RL = 8 Unweighted RL = 4 + 15H A weighted RL = 4 + 15H Output Voltage Noise Unweighted RL = 4 + 30H A weighted RL = 4 + 30H Unweighted RL = 8 + 30H A weighted RL = 8 + 30H Unweighted RL = 4 + Filter A weighted RL = 4 + Filter Unweighted RL = 4 + Filter A weighted RL = 4 + Filter 273 180 300 250 85 5 5 85 60 86 62 83 60 88 64 78 57 87 65 82 59 327 320 10 10 VRMS 1. Standby mode is active when VSTBY is tied to GND. 2. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the superimposed sinusoidal signal to VCC @ F = 217Hz. 4/32 TS4962M Table 5. Symbol ICC ISTBY VOO Electrical Characteristics VCC = +4.2V, GND = 0V, VIC = 2.5V, Tamb = 25C (unless otherwise specified) (1) Parameter Supply Current Standby Current (2) Output Offset Voltage Conditions No input signal, no load No input signal, VSTBY = GND No input signal, RL = 8 G=6dB THD = 1% Max, F = 1kHz, RL = 4 THD = 10% Max, F = 1kHz, RL = 4 THD = 1% Max, F = 1kHz, RL = 8 THD = 10% Max, F = 1kHz, RL = 8 Pout = 600mWRMS, G = 6dB, 20Hz < F < 20kHz RL = 8 + 15H, BW < 30kHz Pout = 700mWRMS, G = 6dB, F = 1kHz, RL = 8 + 15H, BW < 30kHz Pout = 1.45WRMS, RL = 4 + 15H Pout =0.9WRMS, RL = 8+ 15H F = 217Hz, RL = 8, G=6dB, Vripple = 200mVpp F = 217Hz, RL = 8, G = 6dB, Vicm = 200mVpp Rin in k 273k ----------------R in Min. Typ. 2.1 10 3 1.6 2 0.95 1.2 1 0.35 78 88 63 Max. 3 1000 25 Unit mA nA mV Pout Output Power W Total Harmonic THD + N Distortion + Noise % Efficiency Efficiency Power Supply Rejection Ratio with Inputs Grounded (3) Common Mode Rejection Ratio Gain Value Internal Resistance from Standby to GND Pulse Width Modulator Base Frequency Signal to Noise Ratio Wake-upTime Standby Time % PSRR dB CMRR Gain RSTBY FPWM SNR tWU tSTBY 57 300k ----------------R in 327k ----------------R in dB V/V k kHz dB 10 10 ms ms 273 180 A Weighting, Pout = 0.9W, RL = 8 300 250 85 5 5 327 320 F = 20Hz to 20kHz, G = 6dB Unweighted RL = 4 A weighted RL = 4 Unweighted RL = 8 A weighted RL = 8 Unweighted RL = 4 + 15H A weighted RL = 4 + 15H VN Output Voltage Noise Unweighted RL = 4 + 30H A weighted RL = 4 + 30H Unweighted RL = 8 + 30H A weighted RL = 8 + 30H Unweighted RL = 4 + Filter A weighted RL = 4 + Filter Unweighted RL = 4 + Filter A weighted RL = 4 + Filter 1. All electrical values are guaranteed with correlation measurements at 2.5V and 5V. 2. Standby mode is active when VSTBY is tied to GND. 85 60 86 62 83 60 88 64 78 57 87 65 82 59 VRMS 3. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the superimposed sinusoidal signal to VCC @ F = 217Hz. 5/32 Electrical Characteristics Table 6. Symbol ICC ISTBY VOO TS4962M VCC = +3.6V, GND = 0V, VIC = 2.5V, Tamb = 25C (unless otherwise specified) (1) Parameter Supply Current Standby Current (2) Conditions No input signal, no load No input signal, VSTBY = GND G=6dB THD = 1% Max, F = 1kHz, RL = 4 THD = 10% Max, F = 1kHz, RL = 4 THD = 1% Max, F = 1kHz, RL = 8 THD = 10% Max, F = 1kHz, RL = 8 Pout = 500mWRMS, G = 6dB, 20Hz < F< 20kHz RL = 8 + 15H, BW < 30kHz Pout = 500mWRMS, G = 6dB, F = 1kHz, RL = 8 + 15H, BW < 30kHz Pout = 1WRMS, RL = 4 + 15H Pout =0.65WRMS, RL = 8+ 15H F = 217Hz, RL = 8, G=6dB, Vripple = 200mVpp F = 217Hz, RL = 8, G = 6dB, Vicm = 200mVpp Rin in k 273k ----------------R in Min. Typ. 2 10 3 1.15 1.51 0.7 0.9 1 0.27 78 88 62 Max. 2.8 1000 25 Unit mA nA mV Output Offset Voltage No input signal, RL = 8 Pout Output Power W Total Harmonic THD + N Distortion + Noise % Efficiency Efficiency Power Supply Rejection Ratio with Inputs Grounded (3) Common Mode Rejection Ratio Gain Value Internal Resistance from Standby to GND Pulse Width Modulator Base Frequency Signal to Noise Ratio Wake-upTime Standby Time % PSRR dB CMRR Gain RSTBY FPWM SNR tWU tSTBY 56 300k ----------------R in 327k ----------------R in dB V/V k kHz dB 10 10 ms ms 273 180 A Weighting, Pout = 0.6W, RL = 8 300 250 83 5 5 327 320 F = 20Hz to 20kHz, G = 6dB Unweighted RL = 4 A weighted RL = 4 Unweighted RL = 8 A weighted RL = 8 Unweighted RL = 4 + 15H A weighted RL = 4 + 15H VN Output Voltage Noise Unweighted RL = 4 + 30H A weighted RL = 4 + 30H Unweighted RL = 8 + 30H A weighted RL = 8 + 30H Unweighted RL = 4 + Filter A weighted RL = 4 + Filter Unweighted RL = 4 + Filter A weighted RL = 4 + Filter 1. All electrical values are guaranteed with correlation measurements at 2.5V and 5V. 2. Standby mode is active when VSTBY is tied to GND. 83 57 83 61 81 58 87 62 77 56 85 63 80 57 VRMS 3. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the superimposed sinusoidal signal to VCC @ F = 217Hz. 6/32 TS4962M Table 7. Symbol ICC ISTBY VOO Electrical Characteristics VCC = +5V, GND = 0V, VIC = 2.5V, Tamb = 25C (unless otherwise specified) (1) Parameter Supply Current Standby Current (2) Conditions No input signal, no load No input signal, VSTBY = GND G=6dB THD = 1% Max, F = 1kHz, RL = 4 THD = 10% Max, F = 1kHz, RL = 4 THD = 1% Max, F = 1kHz, RL = 8 THD = 10% Max, F = 1kHz, RL = 8 Pout = 350mWRMS, G = 6dB, 20Hz < F < 20kHz RL = 8 + 15H, BW < 30kHz Pout = 350mWRMS, G = 6dB, F = 1kHz, RL = 8 + 15H, BW < 30kHz Pout = 0.7WRMS, RL = 4 + 15H Pout = 0.45WRMS, RL = 8+ 15H F = 217Hz, RL = 8, G=6dB, Vripple = 200mVpp F = 217Hz, RL = 8, G = 6dB, Vicm = 200mVpp Rin in k 273k ----------------R in Min. Typ. 1.9 10 3 0.75 1 0.5 0.6 1 0.21 78 88 60 Max. 2.7 1000 25 Unit mA nA mV Output Offset Voltage No input signal, RL = 8 Pout Output Power W Total Harmonic THD + N Distortion + Noise % Efficiency Efficiency Power Supply Rejection Ratio with Inputs Grounded (3) Common Mode Rejection Ratio Gain Value Internal Resistance from Standby to GND Pulse Width Modulator Base Frequency Signal to Noise Ratio Wake-upTime Standby Time % PSRR dB CMRR Gain RSTBY FPWM SNR tWU tSTBY 54 300k ----------------R in 327k ----------------R in dB V/V k kHz dB 10 10 ms ms 273 180 A Weighting, Pout = 0.4W, RL = 8 300 250 82 5 5 327 320 f = 20Hz to 20kHz, G = 6dB Unweighted RL = 4 A weighted RL = 4 Unweighted RL = 8 A weighted RL = 8 Unweighted RL = 4 + 15H A weighted RL = 4 + 15H VN Output Voltage Noise Unweighted RL = 4 + 30H A weighted RL = 4 + 30H Unweighted RL = 8 + 30H A weighted RL = 8 + 30H Unweighted RL = 4 + Filter A weighted RL = 4 + Filter Unweighted RL = 4 + Filter A weighted RL = 4 + Filter 1. All electrical values are guaranteed with correlation measurements at 2.5V and 5V. 2. Standby mode is active when VSTBY is tied to GND. 83 57 83 61 81 58 87 62 77 56 85 63 80 57 VRMS 3. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the superimposed sinusoidal signal to VCC @ F = 217Hz. 7/32 Electrical Characteristics Table 8. Symbol ICC ISTBY VOO TS4962M VCC = +2.5V, GND = 0V, VIC = 2.5V, Tamb = 25C (unless otherwise specified) Parameter Supply Current Standby Current (1) Conditions No input signal, no load No input signal, VSTBY = GND G=6dB THD = 1% Max, F = 1kHz, RL = 4 THD = 10% Max, F = 1kHz, RL = 4 THD = 1% Max, F = 1kHz, RL = 8 THD = 10% Max, F = 1kHz, RL = 8 Pout = 200mWRMS, G = 6dB, 20Hz < F< 20kHz RL = 8 + 15H, BW < 30kHz Pout = 200WRMS, G = 6dB, F = 1kHz, RL = 8 + 15H, BW < 30kHz Pout = 0.47WRMS, RL = 4 + 15H Pout = 0.3WRMS, RL = 8+ 15H F = 217Hz, RL = 8, G=6dB, Vripple = 200mVpp F = 217Hz, RL = 8, G = 6dB, Vicm = 200mVpp Rin in k Min. Typ. 1.7 10 3 0.52 0.71 0.33 0.42 1 0.19 78 88 60 Max. 2.4 1000 25 Unit mA nA mV Output Offset Voltage No input signal, RL = 8 Pout Output Power W Total Harmonic THD + N Distortion + Noise % Efficiency Efficiency Power Supply Rejection Ratio with Inputs Grounded (2) Common Mode Rejection Ratio Gain Value Internal Resistance from Standby to GND Pulse Width Modulator Base Frequency Signal to Noise Ratio Wake-upTime Standby Time % PSRR dB CMRR Gain RSTBY FPWM SNR tWU tSTBY 54 273k ----------------R in 300k ----------------R in 327k ----------------R in dB V/V k kHz dB 10 10 ms ms 273 180 A Weighting, Pout = 1.2W, RL = 8 300 250 80 5 5 327 320 F = 20Hz to 20kHz, G = 6dB Unweighted RL = 4 A weighted RL = 4 Unweighted RL = 8 A weighted RL = 8 Unweighted RL = 4 + 15H A weighted RL = 4 + 15H VN Output Voltage Noise Unweighted RL = 4 + 30H A weighted RL = 4 + 30H Unweighted RL = 8 + 30H A weighted RL = 8 + 30H Unweighted RL = 4 + Filter A weighted RL = 4 + Filter Unweighted RL = 4 + Filter A weighted RL = 4 + Filter 85 60 86 62 76 56 82 60 67 53 78 57 74 54 VRMS 1. Standby mode is active when VSTBY is tied to GND. 2. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the superimposed sinusoidal signal to VCC @ F = 217Hz. 8/32 TS4962M Table 9. Symbol ICC ISTBY VOO Electrical Characteristics VCC = +2.4V, GND = 0V, VIC = 2.5V, Tamb = 25C (unless otherwise specified) Parameter Supply Current Standby Current (1) Conditions No input signal, no load No input signal, VSTBY = GND Min. Typ. 1.7 10 3 0.48 0.65 0.3 0.38 1 77 86 54 Max. Unit mA nA mV Output Offset Voltage No input signal, RL = 8 G=6dB THD = 1% Max, F = 1kHz, RL = 4 THD = 10% Max, F = 1kHz, RL = 4 THD = 1% Max, F = 1kHz, RL = 8 THD = 10% Max, F = 1kHz, RL = 8 Pout = 200mWRMS, G = 6dB, 20Hz < F< 20kHz RL = 8 + 15H, BW < 30kHz Pout = 0.38WRMS, RL = 4 + 15H Pout = 0.25WRMS, RL = 8+ 15H F = 217Hz, RL = 8, G = 6dB, Vicm = 200mVpp Rin in k 273k ----------------R in Pout Output Power W THD + N Total Harmonic Distortion + Noise % % dB 327k ----------------R in Efficiency Efficiency CMRR Gain RSTBY FPWM SNR tWU tSTBY Common Mode Rejection Ratio Gain Value Internal Resistance from Standby to GND Pulse Width Modulator Base Frequency Signal to Noise Ratio Wake-upTime Standby Time 300k ----------------R in V/V k kHz dB ms ms 273 300 250 327 A Weighting, Pout = 1.2W, RL = 8 80 5 5 F = 20Hz to 20kHz, G = 6dB Unweighted RL = 4 A weighted RL = 4 Unweighted RL = 8 A weighted RL = 8 Unweighted RL = 4 + 15H A weighted RL = 4 + 15H VN Output Voltage Noise Unweighted RL = 4 + 30H A weighted RL = 4 + 30H Unweighted RL = 8 + 30H A weighted RL = 8 + 30H Unweighted RL = 4 + Filter A weighted RL = 4 + Filter Unweighted RL = 4 + Filter A weighted RL = 4 + Filter 1. Standby mode is active when VSTBY is tied to GND. 85 60 86 62 76 56 82 60 67 53 78 57 74 54 VRMS 9/32 Electrical characteristic curves TS4962M 4 Electrical characteristic curves In the graphs that follow, the following abbreviations are used: RL + 15H or 30H = pure resistor+ very low series resistance inductor Filter = LC output filter (1F+30H for 4 and 0.5F+60H for 8) All measurements done with Cs1=1F and Cs2=100nF except for PSRR where Cs1 is removed. Test diagram for measurements Vcc 1uF Cs1 + 100nF Cs2 Figure 2. Cin GND Rin GND In+ Out+ 15uH or 30uH TS4962 or LC Filter Out4 or 8 Ohms 5th order RL 50kHz low pass filter 150k Cin Rin 150k In- GND Audio Measurement Bandwidth < 30kHz Figure 3. Test diagram for PSRR measurements 100nF Cs2 20Hz to 20kHz Vcc GND 4.7uF GND Rin In+ 150k TS4962 4.7uF Rin 150k GND GND 5th order 50kHz low pass filter Reference RMS Selective Measurement Bandwidth=1% of Fmeas InOutOut+ 15uH or 30uH or LC Filter 4 or 8 Ohms 5th order RL 50kHz low pass filter 10/32 TS4962M Figure 4. Current consumption vs. power supply voltage Figure 5. Electrical characteristic curves Current consumption vs. standby voltage 2.5 No load Tamb=25C Current Consumption (mA) 2.5 2.0 Current Consumption (mA) 2.0 1.5 1.5 1.0 1.0 0.5 0.5 Vcc = 5V No load Tamb=25C 0 1 2 3 4 5 0.0 0.0 0 1 2 3 4 5 Power Supply Voltage (V) Standby Voltage (V) Figure 6. Current consumption vs. standby voltage Figure 7. Output offset voltage vs. common mode input voltage 2.0 10 G = 6dB Tamb = 25C Current Consumption (mA) 1.5 Voo (mV) 8 6 Vcc=5V Vcc=3.6V 1.0 4 0.5 Vcc = 3V No load Tamb=25C 0.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 2 Vcc=2.5V 0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 Standby Voltage (V) Common Mode Input Voltage (V) Figure 8. Efficiency vs. output power Figure 9. Efficiency vs. output power 100 600 Efficiency 500 400 300 40 200 Vcc=5V RL=4 + 15H 100 F=1kHz THD+N1% 0 1.0 1.5 2.0 2.3 Output Power (W) Power Dissipation 100 Efficiency 200 Power Dissipation (mW) 150 Efficiency (%) 60 100 40 Power Dissipation Vcc=3V 50 RL=4 + 15H F=1kHz THD+N1% 0 0.2 0.3 0.4 0.5 0.6 0.7 Output Power (W) 60 20 20 0 0.0 0.5 0 0.0 0.1 Power Dissipation (mW) 80 80 Efficiency (%) 11/32 Electrical characteristic curves Figure 10. Efficiency vs. output power TS4962M Figure 11. Efficiency vs. output power 100 150 100 75 Power Dissipation (mW) Efficiency Efficiency Efficiency (%) Efficiency (%) 60 100 50 60 40 Power Dissipation Vcc=5V RL=8 + 15H F=1kHz THD+N1% 0.2 0.4 0.6 0.8 Output Power (W) 1.0 1.2 40 Power Dissipation 25 Vcc=3V RL=8 + 15H F=1kHz THD+N1% 0.4 0 0.5 50 20 20 0 0.0 0 1.4 0 0.0 0.1 0.2 0.3 Output Power (W) Figure 12. Output power vs. power supply voltage Figure 13. Output power vs. power supply voltage 3.5 2.0 Output power (W) Output power (W) RL = 4 + 15H F = 1kHz 3.0 BW < 30kHz Tamb = 25C 2.5 2.0 1.5 THD+N=10% RL = 8 + 15H F = 1kHz BW < 30kHz 1.5 Tamb = 25C THD+N=10% 1.0 THD+N=1% 1.0 0.5 0.0 0.5 THD+N=1% 0.0 2.5 3.0 3.5 4.0 Vcc (V) 4.5 5.0 5.5 2.5 3.0 3.5 4.0 Vcc (V) 4.5 5.0 5.5 Figure 14. PSRR vs. frequency Figure 15. PSRR vs. frequency 0 -10 -20 PSRR (dB) Vripple = 200mVpp Inputs = Grounded G = 6dB, Cin = 4.7F RL = 4 + 15H R/R0.1% Tamb = 25C 0 -10 -20 PSRR (dB) Vripple = 200mVpp Inputs = Grounded G = 6dB, Cin = 4.7F RL = 4 + 30H R/R0.1% Tamb = 25C -30 -40 -30 -40 Vcc=5V, 3.6V, 2.5V Vcc=5V, 3.6V, 2.5V -50 -60 -70 -80 20 100 1000 Frequency (Hz) 10000 20k -50 -60 -70 -80 20 100 1000 Frequency (Hz) 10000 20k 12/32 Power Dissipation (mW) 80 80 TS4962M Figure 16. PSRR vs. frequency Electrical characteristic curves Figure 17. PSRR vs. frequency 0 -10 -20 PSRR (dB) Vripple = 200mVpp Inputs = Grounded G = 6dB, Cin = 4.7F RL = 4 + Filter R/R0.1% Tamb = 25C 0 -10 -20 PSRR (dB) Vripple = 200mVpp Inputs = Grounded G = 6dB, Cin = 4.7F RL = 8 + 15H R/R0.1% Tamb = 25C -30 -40 -30 -40 -50 -60 -70 -80 20 Vcc=5V, 3.6V, 2.5V -50 -60 -70 -80 20 100 1000 Frequency (Hz) 10000 20k Vcc=5V, 3.6V, 2.5V 100 1000 Frequency (Hz) 10000 20k Figure 18. PSRR vs. frequency Figure 19. PSRR vs. frequency 0 -10 -20 PSRR (dB) Vripple = 200mVpp Inputs = Grounded G = 6dB, Cin = 4.7F RL = 8 + 30H R/R0.1% Tamb = 25C 0 -10 -20 PSRR (dB) Vripple = 200mVpp Inputs = Grounded G = 6dB, Cin = 4.7F R/R0.1% RL = 8 + Filter Tamb = 25C -30 -40 -50 -60 -70 -80 20 -30 -40 -50 -60 -70 -80 20 Vcc=5V, 3.6V, 2.5V Vcc=5V, 3.6V, 2.5V 100 1000 Frequency (Hz) 10000 20k 100 1000 Frequency (Hz) 10000 20k Figure 20. PSRR vs. common mode input voltage Figure 21. CMRR vs. frequency 0 -10 -20 PSRR(dB) 0 Vripple = 200mVpp F = 217Hz, G = 6dB RL 4 + 15H Tamb = 25C Vcc=2.5V -20 CMRR (dB) -30 -40 -50 -60 -70 Vcc=5V -80 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 Vcc=3.6V RL=4 + 15H G=6dB Vicm=200mVpp R/R0.1% Cin=4.7F Tamb = 25C Vcc=5V, 3.6V, 2.5V -40 -60 20 100 Common Mode Input Voltage (V) 1000 Frequency (Hz) 10000 20k 13/32 Electrical characteristic curves Figure 22. CMRR vs. frequency Figure 23. CMRR vs. frequency TS4962M 0 RL=4 + 30H G=6dB Vicm=200mVpp R/R0.1% Cin=4.7F Tamb = 25C 0 RL=4 + Filter G=6dB Vicm=200mVpp R/R0.1% Cin=4.7F Tamb = 25C -20 CMRR (dB) -20 CMRR (dB) -40 Vcc=5V, 3.6V, 2.5V -40 Vcc=5V, 3.6V, 2.5V -60 -60 20 100 1000 Frequency (Hz) 10000 20k 20 100 1000 Frequency (Hz) 10000 20k Figure 24. CMRR vs. frequency Figure 25. CMRR vs. frequency 0 RL=8 + 15H G=6dB Vicm=200mVpp R/R0.1% Cin=4.7F Tamb = 25C 0 RL=8 + 30H G=6dB Vicm=200mVpp R/R0.1% Cin=4.7F Tamb = 25C -20 CMRR (dB) -20 CMRR (dB) -40 Vcc=5V, 3.6V, 2.5V -40 Vcc=5V, 3.6V, 2.5V -60 -60 20 100 1000 Frequency (Hz) 10000 20k 20 100 1000 Frequency (Hz) 10000 20k Figure 26. CMRR vs. frequency Figure 27. CMRR vs. common mode input voltage 0 RL=8 + Filter G=6dB Vicm=200mVpp R/R0.1% Cin=4.7F Tamb = 25C -20 Vicm = 200mVpp F = 217Hz G = 6dB RL 4 + 15H Tamb = 25C -30 CMRR(dB) -20 CMRR (dB) Vcc=2.5V -40 -40 Vcc=5V, 3.6V, 2.5V -50 Vcc=3.6V -60 -60 Vcc=5V -70 0.0 20 100 1000 Frequency (Hz) 10000 20k 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 Common Mode Input Voltage (V) 14/32 TS4962M Figure 28. THD+N vs. output power Electrical characteristic curves Figure 29. THD+N vs. output power 10 RL = 4 + 15H F = 100Hz G = 6dB BW < 30kHz Tamb = 25C 1 Vcc=5V Vcc=3.6V 10 RL = 4 + 30H or Filter F = 100Hz G = 6dB BW < 30kHz Tamb = 25C 1 Vcc=5V Vcc=3.6V Vcc=2.5V THD + N (%) 0.1 THD + N (%) Vcc=2.5V 0.1 1E-3 0.01 0.1 Output Power (W) 1 3 1E-3 0.01 0.1 Output Power (W) 1 3 Figure 30. THD+N vs. output power Figure 31. THD+N vs. output power 10 RL = 8 + 15H F = 100Hz G = 6dB BW < 30kHz Tamb = 25C 1 Vcc=5V Vcc=3.6V Vcc=2.5V 10 RL = 8 + 30H or Filter F = 100Hz G = 6dB BW < 30kHz Tamb = 25C 1 Vcc=5V Vcc=3.6V Vcc=2.5V THD + N (%) 0.1 THD + N (%) 0.1 1E-3 0.01 0.1 Output Power (W) 1 2 1E-3 0.01 0.1 Output Power (W) 1 2 Figure 32. THD+N vs. output power Figure 33. THD+N vs. output power 10 RL = 4 + 15H F = 1kHz G = 6dB BW < 30kHz Tamb = 25C 1 Vcc=5V Vcc=3.6V Vcc=2.5V 10 RL = 4 + 30H or Filter F = 1kHz G = 6dB BW < 30kHz Tamb = 25C 1 Vcc=5V Vcc=3.6V Vcc=2.5V THD + N (%) 0.1 1E-3 THD + N (%) 0.01 0.1 Output Power (W) 1 3 0.1 1E-3 0.01 0.1 Output Power (W) 1 3 15/32 Electrical characteristic curves Figure 34. THD+N vs. output power Figure 35. THD+N vs. output power TS4962M 10 RL = 8 + 15H F = 1kHz G = 6dB BW < 30kHz Tamb = 25C 1 Vcc=5V Vcc=3.6V Vcc=2.5V 10 RL = 8 + 30H or Filter F = 1kHz G = 6dB BW < 30kHz Tamb = 25C 1 Vcc=5V Vcc=3.6V Vcc=2.5V THD + N (%) 0.1 1E-3 THD + N (%) 0.01 0.1 Output Power (W) 1 2 0.1 1E-3 0.01 0.1 Output Power (W) 1 2 Figure 36. THD+N vs. frequency Figure 37. THD+N vs. frequency 10 RL=4 + 15H G=6dB Bw < 30kHz Vcc=5V Tamb = 25C 1 10 RL=4 + 30H or Filter G=6dB Bw < 30kHz Vcc=5V Tamb = 25C 1 Po=1.5W Po=1.5W 0.1 Po=0.75W THD + N (%) THD + N (%) 0.1 10000 20k Po=0.75W 50 100 1000 Frequency (Hz) 50 100 1000 Frequency (Hz) 10000 20k Figure 38. THD+N vs. frequency 10 RL=4 + 15H G=6dB Bw < 30kHz Vcc=3.6V Tamb = 25C 1 Figure 39. THD+N vs. frequency 10 RL=4 + 30H or Filter G=6dB Bw < 30kHz Vcc=3.6V Tamb = 25C 1 Po=0.9W Po=0.9W THD + N (%) Po=0.45W THD + N (%) Po=0.45W 0.1 0.1 50 100 1000 Frequency (Hz) 10000 20k 50 100 1000 Frequency (Hz) 10000 20k 16/32 TS4962M Figure 40. THD+N vs. frequency 10 RL=4 + 15H G=6dB Bw < 30kHz Vcc=2.5V Tamb = 25C 1 Electrical characteristic curves Figure 41. THD+N vs. frequency 10 RL=4 + 30H or Filter G=6dB Bw < 30kHz Vcc=2.5V Tamb = 25C 1 Po=0.4W Po=0.4W Po=0.2W THD + N (%) THD + N (%) Po=0.2W 0.1 0.1 200 1000 Frequency (Hz) 10000 20k 50 100 1000 Frequency (Hz) 10000 20k Figure 42. THD+N vs. frequency 10 RL=8 + 15H G=6dB Bw < 30kHz Vcc=5V Tamb = 25C 1 Figure 43. THD+N vs. frequency 10 RL=8 + 30H or Filter G=6dB Bw < 30kHz Vcc=5V Tamb = 25C 1 THD + N (%) THD + N (%) Po=0.9W Po=0.9W 0.1 Po=0.45W 0.1 Po=0.45W 50 100 1000 Frequency (Hz) 10000 20k 50 100 1000 Frequency (Hz) 10000 20k Figure 44. THD+N vs. frequency 10 RL=8 + 15H G=6dB Bw < 30kHz Vcc=3.6V Tamb = 25C 1 Figure 45. THD+N vs. frequency 10 RL=8 + 30H or Filter G=6dB Bw < 30kHz Vcc=3.6V Tamb = 25C 1 Po=0.5W THD + N (%) Po=0.5W 0.1 Po=0.25W THD + N (%) 0.1 Po=0.25W 50 100 1000 Frequency (Hz) 10000 20k 50 100 1000 Frequency (Hz) 10000 20k 17/32 Electrical characteristic curves Figure 46. THD+N vs. frequency Figure 47. THD+N vs. frequency 10 RL=8 + 15H G=6dB Bw < 30kHz Vcc=2.5V Tamb = 25C TS4962M 10 THD + N (%) THD + N (%) 1 Po=0.2W 1 RL=8 + 30H or Filter G=6dB Bw < 30kHz Vcc=2.5V Tamb = 25C Po=0.2W 0.1 0.1 Po=0.1W Po=0.1W 0.01 0.01 50 100 1000 Frequency (Hz) 10000 20k 50 100 1000 Frequency (Hz) 10000 20k Figure 48. Gain vs. frequency Figure 49. Gain vs. frequency 8 8 Differential Gain (dB) Differential Gain (dB) 6 6 4 Vcc=5V, 3.6V, 2.5V 4 Vcc=5V, 3.6V, 2.5V 2 RL=4 + 15H G=6dB Vin=500mVpp Cin=1F Tamb = 25C 20 100 1000 Frequency (Hz) 10000 20k 2 RL=4 + 30H G=6dB Vin=500mVpp Cin=1F Tamb = 25C 20 100 1000 Frequency (Hz) 10000 20k 0 0 Figure 50. Gain vs. frequency 8 Figure 51. Gain vs. frequency 8 Differential Gain (dB) 6 Differential Gain (dB) 6 Vcc=5V, 3.6V, 2.5V 4 RL=8 + 15H G=6dB Vin=500mVpp Cin=1F Tamb = 25C 20 100 1000 Frequency (Hz) 10000 20k 4 Vcc=5V, 3.6V, 2.5V 2 RL=4 + Filter G=6dB Vin=500mVpp Cin=1F Tamb = 25C 20 100 1000 Frequency (Hz) 10000 20k 2 0 0 18/32 TS4962M Figure 52. Gain vs. frequency 8 Electrical characteristic curves Figure 53. Gain vs. frequency 8 Differential Gain (dB) Vcc=5V, 3.6V, 2.5V 4 RL=8 + 30H G=6dB Vin=500mVpp Cin=1F Tamb = 25C 20 100 1000 Frequency (Hz) 10000 20k Differential Gain (dB) 6 6 Vcc=5V, 3.6V, 2.5V 4 RL=8 + Filter G=6dB Vin=500mVpp Cin=1F Tamb = 25C 20 100 1000 Frequency (Hz) 10000 20k 2 2 0 0 Figure 54. Gain vs. frequency Figure 55. Startup & shutdown time VCC = 5V, G = 6dB, Cin = 1F (5ms/div) 8 Vo1 Differential Gain (dB) 6 Vcc=5V, 3.6V, 2.5V 4 RL=No Load G=6dB Vin=500mVpp Cin=1F Tamb = 25C 20 100 1000 Frequency (Hz) 10000 20k Vo2 Standby Vo1-Vo2 2 0 Figure 57. Figure 56. Startup & shutdown time VCC = 3V, G = 6dB, Cin = 1F (5ms/div) Startup & shutdown time VCC = 5V, G = 6dB, Cin = 100nF (5ms/div) Vo1 Vo1 Vo2 Vo2 Standby Standby Vo1-Vo2 Vo1-Vo2 19/32 Electrical characteristic curves Figure 58. TS4962M Startup & shutdown time Figure 59. Startup & shutdown time VCC = 3V, G = 6dB, Cin = 100nF (5ms/div) VCC = 5V, G = 6dB, No Cin (5ms/div) Vo1 Vo1 Vo2 Vo2 Standby Standby Vo1-Vo2 Vo1-Vo2 Figure 60. Startup & shutdown time VCC = 3V, G = 6dB, No Cin (5ms/div) Vo1 Vo2 Standby Vo1-Vo2 20/32 TS4962M Application Information 5 5.1 Application Information Differential configuration principle The TS4962M is a monolithic fully-differential input/output class D power amplifier. The TS4962M also includes a common-mode feedback loop that controls the output bias value to average it at VCC/2 for any DC common mode input voltage. This allows the device to always have a maximum output voltage swing, and by consequence, maximize the output power. Moreover, as the load is connected differentially compared to a single-ended topology, the output is four times higher for the same power supply voltage. The advantages of a full-differential amplifier are: High PSRR (Power Supply Rejection Ratio). High common mode noise rejection. Virtually zero pop without additional circuitry, giving an faster start-up time compared to conventional single-ended input amplifiers. Easier interfacing with differential output audio DAC. No input coupling capacitors required thanks to common mode feedback loop. As the differential function is directly linked to external resistor mismatching, paying particular attention to this mismatching is mandatory in order to obtain the best performance from the amplifier. The main disadvantage is: 5.2 Gain in typical application schematic Typical differential applications are shown in Figure 1 on page 3. In the flat region of the frequency-response curve (no input coupling capacitor effect), the differential gain is expressed by the relation: AV diff 300 Out - Out = ------------------------------ = --------+ R in In - In + - with Rin expressed in k. For the remainder of this chapter, AVdiff will be referred to as AV for simplicity's sake. Due to the tolerance of the internal 150k feedback resistor, the differential gain will be in the range (no tolerance on Rin): 273 327 --------- A V --------diff R in R in 21/32 Application Information TS4962M 5.3 Common mode feedback loop limitations As explained previously, the common mode feedback loop allows the output DC bias voltage to be averaged at VCC/2 for any DC common mode bias input voltage. However, due to Vicm limitation in the input stage (see Table 2: Operating conditions on page 2), the common mode feedback loop can ensure its role only within a defined range. This range depends upon the values of VCC and Rin (Av). To have a good estimation of the Vicm value, we can apply this formula (no tolerance on Rin): V CC x R in + 2 x V IC x 150k V icm = --------------------------------------------------------------------------2 x ( R in + 150k ) (V) with In + In V IC = --------------------2 + - (V) and the result of the calculation must be in the range: 0.5V V icm V CC - 0.8V Due to the +/-9% tolerance on the 150k resistor, it's also important to check Vicm in these conditions: V CC x R in + 2 x V IC x 136.5k V CC x R in + 2 x V IC x 163.5k -------------------------------------------------------------------------------- V icm -------------------------------------------------------------------------------2 x ( R in + 136.5k ) 2 x ( R in + 163.5k ) If the result of Vicm calculation is not in the previous range, input coupling capacitors must be used (with VCC from 2.4V to 2.5V, input coupling capacitors are mandatory). For example: With VCC = 3V, Rin = 150k and VIC = 2.5V, we found Vicm = 2V typically and this is lower than 3V - 0.8V = 2.2V. With 136.5k we found 1.97V and with 163.5k we have 2.02V. So, no input coupling capacitors are required. 5.4 Low frequency response If a low frequency bandwidth limitation is requested, it's possible to use input coupling capacitors. In the low frequency region, Cin (input coupling capacitor) starts to have an effect. Cin forms, with Rin, a first order high-pass filter with a -3dB cut-off frequency: 1 F CL = ----------------------------------2 x R in x C in (Hz) So, for a desired cut-off frequency we can calculate Cin, 1 C in = ------------------------------------2 x R in x F CL (F) with Rin in W and FCL in Hz. 22/32 TS4962M Application Information 5.5 Decoupling of the circuit A power supply capacitor is needed to correctly bypass the TS4962M, referred to as CS. The TS4962M has a typical switching frequency at 250kHz and output fall and rise time about 5ns. Due to these very fast transients, careful decoupling is mandatory. A 1F ceramic capacitor is enough, but it must be located very close to the TS4962M in order to avoid any extra parasitic inductance created an overly long track wire. These parasitic inductances introduce, in relation with dI/dt, overvoltage that decreases the global efficiency and may cause, if this parasitic inductance is too high, a TS4962M breakdown. In addition, even if a ceramic capacitor has an adequate high frequency ESR value, its current capability is also important. A 0603 size is a good compromise, particularly when 4 load is used. Another important parameter is the rated voltage of the capacitor. A 1F/6.3V capacitor used at 5V, lose about 50% of its value. In fact at 5V power supply voltage, we have a decoupling value about 0.5F instead of 1F. As CS has particular influence on the THD+N in the medium, high frequency region, this capacitor variation becomes decisive. In addition, less decoupling means higher overshoot that can be problematic if they reach the power supply AMR value (6V). 5.6 Wake-up Time: tWU When the standby is released to set the device ON, there is a wait of about 5ms. The TS4962M has an internal digital delay that mutes the outputs and releases them after this time in order to avoid any pop noise. 5.7 Shutdown time When the standby command is set, the time required to put the two output stages into high impedance and to put the internal circuitry in shutdown mode, is about 5ms. This time is used to decrease the gain and avoid any pop noise during shutdown. 5.8 Consumption in shutdown mode Between the shutdown pin and GND there is an internal 300k resistor. This resistor force the TS4962M to be in shutdown when the shutdown input is leaved floating. However, this resistor also introduces additional shutdown power consumption if the shutdown pin voltage is not 0V. Referring to Table 2: Operating conditions on page 2, with 0.4V shutdown voltage pin for example, we have 0.4V/300k = 1.3A in typical (0.4V/273k = 1.46A in maximum) to add to the shutdown current specified in the tables in Table 4 on page 4. 23/32 Application Information TS4962M 5.9 Single ended input configuration It's possible to use the TS4962M in a single-ended input configuration. However, input coupling capacitors are needed in this configuration. The following schematic shows a single ended input typical application. Vcc B1 Ve Standby B2 Vcc Cs 1u C2 Stdby 300k Internal Bias 150k Out+ C3 Output PWM H Bridge SPEAKER 150k Oscillator GND TS4962 B3 A2 GND GND Cin GND Rin C1 A1 Rin Cin GND InIn+ + - A3 Out- All formulas are identical except for the gain with Rin in k: AV sin gle Ve 300 = ------------------------------ = --------+ R in Out - Out And, due to the internal resistor tolerance we have: 327 273 --------- A V --------sin gle R in R in In the event that multiple single-ended inputs are summed, it is important that the impedance on both TS4962M inputs (In- and In+) are equal. Vcc Vek Cink GND Ve1 Cin1 Rin1 C1 InIn+ A1 GND Ceq Req 150k Oscillator GND TS4962 A2 B3 GND OutStandby Rink C2 Stdby 300k Internal Bias 150k Out+ C3 Output PWM H Bridge SPEAKER A3 GND B1 Vcc B2 Cs 1u + GND 24/32 TS4962M We have following equations: + 300 300 Out - Out = V e1 x ------------ + ... + V ek x -----------R ink R in1 k Application Information (V) C eq = j=1 Cinj (F) C inj 1 = --------------------------------------------------2xxR xF inj CLj 1R eq = ------------------ ---------Rinj j =1 k 1 In general, for mixed situations (single-ended and differential inputs) we must use the same rule: equalize impedance on both TS4962M inputs. 5.10 Output filter considerations The TS4962M is designed to operate without an output filter. However, due to very sharp transients on TS4962M output, EMI radiated emissions may cause some standard compliance issues. These EMI standard compliance issues can appear if the distance between the TS4962M outputs and loudspeaker terminal are long (typically more than 50mm, or 100mm in both directions, to the speaker terminals). As each PCB layout and internal equipment device are different for each configuration, it is difficult to provide a one-size-fits-all solution. However, to decrease the probability of EMI issues, there are several simple rules to follow: Reduce, as much as possible, the distance between the TS4962M output pins and the speaker terminals. Uses ground plane for "shielding" sensitive wire. Place, as close as possible to the TS4962M and in series with each output, a ferrite bead with a rated current at minimum 2A and impedance greater than 50 at frequencies >30MHz. If, after testing, these ferrite beads are not necessary, replace them by a shortcircuit. Murata BLM18EG221SN1 or BLM18EG121SN1 are possible examples. Allow a footprint to place, if necessary, a capacitor to short perturbations to ground (see following schematic). Ferrite chip bead From TS4962 output about 100pF Gnd To speaker In the case where distance between TS4962M's output and speaker terminals is high, it's possible to have low frequency EMI issues due to the fact that the typical operating frequency is 250kHz. In this configuration, utilization of the output filter represented in page 3 and close of the TS4962M is necessary. 25/32 Application Information TS4962M 5.11 Different examples with summed inputs Example 1: Dual differential inputs Vcc Standby C2 Stdby 300k R2 E2+ R1 E1+ E1R1 E2R2 150k Oscillator GND A2 B3 GND TS4962 OutC1 Internal Bias 150k Out+ C3 Output PWM H Bridge SPEAKER A3 GND B1 Vcc B2 Cs 1u A1 InIn+ + - With (Ri in k): 300 Out - OutA V = ------------------------------ = --------+ 1 R1 E1 - E1 300 Out - OutA V = ------------------------------ = --------+ 2 R2 E2 - E2 V CC x R 1 x R 2 + 300 x ( V IC1 x R 2 + V IC2 x R 1 ) 0.5V -------------------------------------------------------------------------------------------------------------------------- V CC - 0.8V 300 x ( R 1 + R 2 ) + 2 x R 1 x R 2 E1 + E1 E2 + E2 V IC = ------------------------ and V IC = -----------------------1 2 2 2 + + + + - 26/32 TS4962M Application Information Example 2: One differential input plus one single ended input Vcc Standby C2 Stdby E2+ C1 E1+ E2R2 150k GND C1 R1 Oscillator GND A2 B3 GND TS4962 OutR1 C1 InIn+ A1 300k R2 Internal Bias 150k Out+ C3 Output PWM H Bridge SPEAKER A3 GND B1 Vcc B2 Cs 1u + With (Ri in k): A V = Out - Out- = 300 -------------------------------------+ 1 R1 E1 300 Out - OutA V = ------------------------------ = --------+ 2 R2 E2 - E2 1 C 1 = -----------------------------------2 x R 1 x F CL (F) + + - 27/32 Demoboard TS4962M 6 Demoboard A demoboard for the TS4962M is available with a the flip-chip adapter flip-chip to DIP. For more information about this demoboard, please refer to Application Note AN2134. Figure 61. Schematic diagram of mono class D demoboard for TS4962M Vcc Cn1 + J1 Cn2 Vcc GND Cn4 + J2 GND 4 Stdby C2 Cn3 Positive Input Negative input 100nF 150k 100nF R2 C3 150k 5 InIn+ + 300k R1 Internal Bias 150k Out+ 6 Output PWM H Bridge 10 OutCn6 Positive Output Negative Output - 1 150k Oscillator Cn5 + J3 Figure 62. Diagram for flip-chip-to-DIP adapter Pin3 pin8 R1 OR C1 100nF B1 Vcc 300k Pin4 C2 Stdby Internal Bias 150k Out+ C3 Output PWM H Bridge 150k Oscillator GND A2 B3 R2 OR Pin2 Pin9 TS4962 A3 OutPin10 Pin6 B2 Pin5 Pin1 C1 A1 InIn+ + - 28/32 + + GND 1 2 3 C1 2.2uF/10V Vcc 3 Vcc 8 U1 GND 2 GND 3 TS4962 Flip-Chip to DIP Adapter C2 1uF TS4962M Figure 63. Top view Demoboard Figure 64. Bottom layer Figure 65. Top layer 29/32 Footprint recommendations TS4962M 7 Footprint recommendations Figure 66. Footprint recommendations 500m =250m 500m 75m min. 100m max. Track 500m =400m typ. =340m min. 150m min. Non Solder mask opening Pad in Cu 18m with Flash NiAu (2-6m, 0.2m max.) 30/32 500m TS4962M Package Mechanical Data 8 Package Mechanical Data 9-bump flip-chip Figure 67. Pin-out for 9-bump flip-chip (top view) IN+ 1/A1 VDD 4/B1 IN7/C1 GND 2/A2 VDD 5/B2 STBY 8/C2 OUT3/A3 GND 6/B3 OUT+ 9/C3 Bumps are underneath Bump diameter = 300m Figure 68. Marking for 9-bump flip-chip (top view) ST Logo Symbol for lead-free: E Two first XX product code: 62 third X: Assembly code Three digits date code: Y for year - WW for week The dot is for marking pin A1 E XXX YWW Figure 69. Mechanical data for 9-bump flip-chip 1.60 mm 1.60 mm Die size: 1.6mm x 1.6mm 30m Die height (including bumps): 600m Bump diameter: 315m 50m Bump diameter before reflow: 300m 10m Bump height: 250m 40m Die height: 350m 20m Pitch: 500m 50m Coplanarity: 50m max 0.5mm 0.5mm 0.25mm 600m 31/32 Revision History TS4962M 9 Revision History Date Oct. 2005 Revision 1 Changes First Release corresponding to the product preview version. The following changes were made in this revision: - Table data updated for Output Voltage Noise condition see Table 4., Table 5., Table 6., Table 7., Table 8. andTable 9. - Formatting changes throughout. Product in full production. Nov. 2005 2 Dec. 2005 3 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners (c) 2005 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com 32/32 |
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