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| STABP01 DIGITAL PROCESSOR s BASH(R) LICENCE REQUIRED DESCRIPTION The STABP01 processor is used to control the BASH(R) Digital Converter. When used in conjunction with BASH(R) amplifiers a fully integrated high efficiency power amplifier is realized. By analyzing the audio input, the Processor determines the appropriate on/off events and generates a digital pulse for the Digital Converter. The converter turns this pulse into a power signal that feeds the power amplifier. The feedback system allows the processor to constantly adapt to the audio signal and regenerate the digital pulse thereby maintaining a constant voltage across the output devices. BLOCK DIAGRAM UVLO: 7V = on 5V = off + + SOFT SWITCH 250Hz 1V CLOCK Ct COMP + V+ VFB ERROR AMP 1V + GROUND1 SOFT SW RESET 1V DEAD TIME POWER_VS2 + + SR OUTPUT QQ 1V POWER SUPPLY1 10V DIP20 SO20 ORDERING NUMBERS: STABP01 (DIP20) STABP01D (SO20) Q VREF 10V Rt 1V INTERNAL CIRCUIT ON R Q S R CURRENT SENSE COMPARATOR + CURRENT_SENSE DISCHARGE (RESET) TRANSISTOR 1V SQ RQ PWM LATCH BUFFER OUT 1V REC_OUT 1V 2200pF 50K 2200pF ONE SHOT 1V 20K C51 December 2002 - + R RESET DUTY ACCEL R162 10V + - + BUFFER IN BUFFER + FA IN FAST ATTACK CONTROL ONE SHOT SIGNAL CLK 10V D Q Q 1V OPEN DRAIN OUTPUT ONE SHOT DELAY 17R - + COMP/3 - - - 2R CLK Q D Q RESET - 1V 1V OUTPUT GROUND2 10V D00AU1219 1/7 STABP01 ABSOLUTE MAXIMUM RATINGS Symbol Vs Io Eo Vi Io Ptot Tstg TL Top Supply Voltage Output Current Output Energy(capacitive load) Analog Input Voltage Error Amplifier Output Sink Current Power Dissipation at Tamb Storage Ambient Temperature Lead Temperature (soldering 10s) Operating Temperature Range Parameter Value 10.5 0.6 5 -0.3 to 8 10 500 -65 to 150 300 -25 to 85 Unit V A J V mA mW C C C THERMAL DATA Symbol Rth j-amb Parameter Thermal Resistance junction-ambient soldered on PCB SO20 95 DIP20 90 Unit C/W PIN CONNECTION BUFFER OUT VFB V+ COMP CURRENT SENSE DEAD TIME POWER SUPPLY2 MAIN OUTPUT GROUND2 CLOCK(RT/CT) 1 2 3 4 5 6 7 8 9 10 D00AU1217B 20 19 18 17 16 15 14 13 12 11 BUFFER IN FAST ATTACK RECTIFIER DUTY ACCEL ONE SHOT ONE SHOT DELAY POWER SUPPLY1 SOFT SW OUT GROUND1 SOFT SW RESET TYPICAL APPLICATION CIRCUIT REFERENCE SIGNAL STABP01 PROCESSOR PROTECTION SIGNAL AC POWER SUPPLY BUCK CONVERTER STA575 POWER AMP D00AU1218 AUDIO INPUT 2/7 STABP01 ELECTRICAL CHARACTERISTCS (Vs = 10V; Rt = 22k; Ct = 2.2nF; t = 25C unless otherwise specified) Symbol Parameter Test Conditions Min Typ Max Unit OSCILLATOR SECTION fs Ts Initial Accuracy (*) Temperature Stability Amplitude Tj=25C, SW Out Off Tmin Ib AVOL B SVR ICMR CMRR OR Input Bias Current Open loop Gain Unity Gain Bandwidth Supply Voltage Rejection Input Common Mode Range Common Mode Rejection Ratio Output Voltage Range I = 1mA 0.5 6 Gv V5 Ib Odt Gain Maximum Input Signal Input Bias Current Delay to Output (minimum output pulse) V4/V5, V5 <1V, Duty Cycle = 80% V4 = 5V V5 <0.9V, 150 2.7 0.9 3 1 3.3 1.1 1 300 V/V V A ns OUTPUT SECTION VOL VOH tr tf Output Low Level Output High Level Rise Time Fall Time Isink=20mA Isink=200mA Isource=20mA Isource=200mA Tj=25C CL=1nF Tj=25C CL=1nF 9.6 7.8 0.1 1.5 9.9 8.5 50 50 150 150 0.4 2.2 V V V V ns ns UNDER-VOLTAGE LOCKOUT SECTION UVstart UVstop Start Threshold Min Operating Voltage After Turn-on 6.3 4.5 7 5 7.7 5.5 V V TOTAL STANDBY CURRENT Ist Is Start-up Current Operating Supply Current 0.5 10 1 20 mA mA 3/7 STABP01 ELECTRICAL CHARACTERISTCS (continued) Symbol Parameter Test Conditions Min Typ Max Unit BUFFER SECTION Ib B SVR ICMR OR Input Bias Current Unity Gain Bandwidth Supply Voltage Rejection Input Common Mode Range Output Range I = 1mA 6 VOL VOH tr tf Vreset Output Low Level Output High Level Rise Time Fall Time Reset Level Isink=20mA Isink=200mA Isource=20mA Isource=200mA Tj=25C CL=1nF Tj=25C CL=1nF 9.6 7.8 0.1 1.5 9.9 8.5 50 50 1 150 150 0.4 2.2 V V V V ns ns V FAST ATTACK CONTROL SECTION Gdiff OSth OSDth I15leak I17leak Differential Gain Level for one shot Level for one shot delay Leakage pin 15 Leakage pin 17 V15 = 0.8V V17 = 10V, V16 = 0V 16 0.9 0.9 18 1 1 20 1.1 1.1 0.2 0.2 V/V V V A A (*) Rt, Ct = 1% precision component 4/7 STABP01 DIM. MIN. a1 B b b1 D E e e3 F I L Z 0.254 1.39 mm TYP. MAX. MIN. 0.010 1.65 0.45 0.25 25.4 8.5 2.54 22.86 7.1 3.93 3.3 1.34 0.055 inch TYP. MAX. OUTLINE AND MECHANICAL DATA 0.065 0.018 0.010 1.000 0.335 0.100 0.900 0.280 0.155 0.130 DIP20 0.053 5/7 STABP01 mm DIM. MIN. A A1 B C D E e H h L K 10 0.25 0.4 2.35 0.1 0.33 0.23 12.6 7.4 1.27 10.65 0.75 1.27 0.394 0.010 0.016 TYP. MAX. 2.65 0.3 0.51 0.32 13 7.6 MIN. 0.093 0.004 0.013 0.009 0.496 0.291 inch TYP. MAX. 0.104 0.012 0.020 0.013 0.512 0.299 0.050 0.419 0.030 0.050 OUTLINE AND MECHANICAL DATA SO20 0 (min.)8 (max.) L h x 45 A B e K H D A1 C 20 11 E 1 0 1 SO20MEC 6/7 STABP01 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 2000 STMicroelectronics - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - United States http://www.st.com (R) 7/7 |
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