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UTC TDA2003 LINEAR INTEGRATED CIRCUIT 10W CAR RADIO AUDIO AMPLIFIER DESCRIPTION The UTC TDA2003 is a monolithic audio power amplifier integrated circuit. FEATURES *Very low external component required. *High current output ( up to 3 A). *Low harmonic and crossover distortion. *Built-in Over temperature protection. *Short circuit protection between all pins. 1 TO-220B PIN CONFIGURATIONS 1 2 3 4 5 Non inverting input Inverting input Ground Output Supply Voltage BLOCK DIAGRAM 5 4 3 12 UTC UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R107-002,A UTC TDA2003 PARAMETER LINEAR INTEGRATED CIRCUIT SYMBOL Vs Vs Vs Io Io Ptot Tstg Tj ABSOLUTE MAXIMUM RATINGS(Ta=25C) VALUE 40 28 18 3.5 4.5 20 -40~+150 -40~+150 UNIT V V V A A W C C Peak Supply Voltage DC Supply Voltage Operating Supply Voltage Output Peak Current (repetitive) Output Peak Current ( non repetitive) Power Dissipation at Tcase = 90C Storage Temperature Junction Temperature ELECTRICAL CHARACTERISTICS(Refer to the test circuit,Vs=+-16V,Ta=25C) PARAMETER SYMBOL DC CHARACTERISTICS Supply Voltage Quiescent Output Voltage Quiescent Drain Current Vs Vo Id TEST CONDITIONS MIN 8 6.1 TYP MAX 18 7.7 50 UNIT V V mA 6.9 44 AC CHARACTERISTICS d=10%,f=1kHz RL=8 RL=2 RL=3.2 RL=1.6 f=1kHz Po=0.5W,RL=4 Po=6W,RL=4 Po=0.5W,RL=2 Po=10W,RL=2 5.5 9 6 10 7.5 12 14 55 10 50 300 40 15000 Output Power Po W Input Sensitivity Vi Input Saturation Voltage Frequency Response(-3dB) Distortion Input Resistance(Pin 1) Input Noise Current Input Noise Voltage Open Loop Voltage Gain Closed Loop Voltage Gain Vi(rms) B Po=1W,RL=4 f=1kHz Po=0.05 to 4.5W ,RL=4 Po=0.05 to 7.5W ,RL=2 open loop,f=1kHz mV mV mV mV mV Hz D Ri eN IN Gvo Gvc 70 0.15 0.15 150 60 1 80 60 200 5 % k pA V dB dB dB f=1kHz f=10kHz f=1kHz RL=4 39.3 40 40.3 UTC UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R107-002,A UTC TDA2003 PARAMETER Efficiency Supply Voltage Rejection LINEAR INTEGRATED CIRCUIT TEST CONDITIONS f=1kHz Po=6W,RL=4 Po=10W,RL=2 f=100Hz,Vripple=0.5V Rg=10k,RL=4 SYMBOL | C MIN TYP 69 65 MAX UNIT % % dB SVR 30 36 TEST CIRCUIT +Vs 100 F C3 100nF Vi C1 1 F 1 UTC TDA2003 2 5 4 3 C4 1000 F Cx 39nF R2 2.2 Rx=20*R2 Cx=1/(2 B*R1) DC Test Circuit +Vs 100nF AC Test Circuit +Vs 100 F C3 100nF mA Vi 1 UTC TDA2003 2 Vi 5 4 3 R1 220 RL 470 F 1000 F C1 1 F 1 UTC TDA2003 2 100nF Rx 39 R1 220 R3 1 RL C2 470 F 5 4 3 C4 1000F Cx 39nF Rx=20*R2 Cx=1/(2 B*R1) UTC UNISONIC TECHNOLOGIES CO., LTD. 100nF V R2 2.2 Rx 39 R1 220 R3 1 R2 2.2 RL C2 470 F 3 QW-R107-002,A UTC TDA2003 Fig.1 Quiescent output voltage vs.Supply voltage Vo(V) 8 LINEAR INTEGRATED CIRCUIT Fig.2 Quiescent drain current vs.Supply voltage Id(mA) 80 TYPICAL PERFORMANCE CHARACTERISTICS Fig.3 Output power vs.Supply voltage Po (W) 20 Gv=40dB f=1kHz d=10% R=1.6 R=2 6 60 15 4 40 10 R=3.2 R=4 2 20 5 0 8 10 12 14 16 0 0 8 10 12 14 16 Vs(V) Vs(V) 0 5 10 15 20 Vs(V) Fig.4 output power vs.load resistance Po (W) 16 Vs=16V Vs=14.4V Gv=40dB f=1kHz d=10% 58 54 52 48 44 40 8 Vs=12V 36 32 Vs=8V 4 28 24 0 0 2 4 6 8 20 10 Fig.5 Gain vs. Input sensitivity 58 54 Gv=40dB f=1kHz RL=4 52 48 44 40 36 32 28 24 20 10 Fig.6 Gain vs. Input sensitivity Gv=40dB f=1kHz RL=2 12 RL() 100 Vi(rms) 1000 100 Vi(rms) 1000 Fig.7 Distortion vs. output power 100 Fig.8 Distortion vs. frequency d(%) 0.8 Gv=40dB Vs=14.4V RL=2/4 Fig.9 Supply voltage rejection vs. voltage gain SVR (dB) -10 d(%) 10 Gv=40dB f=1kHz Vs=14.4V R=3.2 R=2 fripple=100Hz Vs=14,4V RL=2.2 Rg=10k R=4 1 R=1.6 0.6 -20 Po=2.5W 0.4 0.1 0.2 Po=50mW -30 -40 0.01 0.1 0 1 10 Po() 100 1 10 2 10 3 10 4 10 -50 30 35 40 45 50 55 Frequency (Hz) Gv(dB) UTC UNISONIC TECHNOLOGIES CO., LTD. 4 QW-R107-002,A UTC TDA2003 Fig. 10 Supply voltage rejection vs.frequency SVR (dB) 0 LINEAR INTEGRATED CIRCUIT Fig. 11 Power dissipation and efficiency vs. output power(Rl=4 ) Ptot (W) 8 Fig. 12 Power dissipation and efficiency vs. output power(Rl=2 ) (%) Ptot (W) 8 -20 Vs=14.4V Vripple=0.5V Gv=40dB f=1kHz Rg=10k R2=22 |C (%) Vs=14.4V Gv=40dB f=1kHz 80 80 6 Vs=14.4V Gv=40dB f=1kHz 60 6 60 -40 4 Ptot 40 4 40 -60 R2=1 2 20 2 20 -80 10 2 10 10 3 frequency(Hz) 4 10 10 5 0 0 2 4 6 8 0 0 0 2 4 6 8 0 Po(W) Po(W) Fig. 13 Maximum Power dissipation and supply voltage(sine wave operation) Ptot (W) 20 Ptot (W) Fig. 14 Maximum allowable dissipation and ambient temperature Cx (nF) 100 Fig. 15 Typical values of capacitor(Cx) for different values of frequency response infinite heatsink 20 B=10kHz B=15kHz 15 RL=1.6 10 RL=2 RL=3.2 5 RL=4 15 10 10 10XC/W 5 30XC/W B=20kHz R2=2.2 0 0 5 10 15 20 Vs(V) 0 0 50 100 150 200 Tamb(XC) 1 36 40 44 48 Gv(dB) APPLICATION CIRCUIT +Vs 100F C3 100nF Vi C1 1 F 1 UTC TDA2003 2 5 4 3 C4 1000 F Cx 39nF R2 2.2 Rx=20*R2 Cx=1/(2B*R1) Fig 16 Typical Application Circuit UTC UNISONIC TECHNOLOGIES CO., LTD. 100nF Rx 39 R1 220 R3 1 RL C2 470 F 5 QW-R107-002,A UTC TDA2003 2.2 F LINEAR INTEGRATED CIRCUIT Vs=14.4V 1 0.1F 1 2 5 UTC TDA2003 5 4 RL=4 0.1 F 200 430 1 2 2.2 F 4 UTC TDA2003 3 3 C3 15 F 16 C4 10 F 16 Fig.18 20W Bridge Configuration Application The Values of the capacitors C3 and C4 are different to optimize the SVR(Typ. 40dB) Vs=14.4V 0.1 F 0.1 F 1 2 5 UTC TDA2003 RL=4 5 4 UTC TDA2003 0.1 F 1 2 0.1 F 4 0.1 F 3 3 C3 15 F 1nF 620 Fig.20 Low Cost Bridge Configuration Application Circuit(Po=18W) UTC UNISONIC TECHNOLOGIES CO., LTD. 6 QW-R107-002,A UTC TDA2003 LINEAR INTEGRATED CIRCUIT BUILT-IN PROTECTION SYSTEMS LOAD DUMP VOLTAGE SURGE The UTC TDA2003 has a circuit which enables it to withstand a volt. CHARACT age pulse train, on pin 5, of the type shown in Fig. 23. If the supply voltage peaks to more than 40V, then an LC filter must be inserted between the supply and pin 5, in order to assure that the pulses at pin 5 will be head within the limits shown in Fig.22. A suggested LC network is shown in Fig.23.With this network, a train of pulses with amplitude up to 120V and width of 2ms can be applied at point A. This type of protection is ON when the supply voltage(pulsed or DC) exceeds 18V.For this reason the maximum operating supply voltage is 18V. Vs (V) 40 t1=50ms A 2mH From Supply Voltage 3000 F 16V B To Pin 5 14.4 t t2=1000ms SHORT CIRCUIT (AC and DC Conditions) The UTC TDA2003 can withstand a permanent short-circuit on the output for a supply voltage up to 16V. POLARITY INVERSION High current(up to 5A) can be handled by the device with no damage for a longer period than the blow-out time of a quick 1A fuse(normally connected in series with the supply). The feature is added to avoid destruction if, during fitting to the car, a mistake on connection of the supply is made. OPEN GROUND When the radio is in the ON condition and the ground is accidentally opened, a standard audio amplifier will be damaged. On the UTC TDA2003 protection diodes are included to avoid any damage. INDUCTIVE LOAD A protection diode is provide between pin 4 and pin 5(see the internal schematic diagram) to allow use of the UTC TDA2003 with inductive loads. In particular, the UTC TDA2003 can drive a coupling transformer for audio modulation. DC VOLTAGE The maximum operating DC voltage on the UTC TDA2003 is 18V. However the device can withstand a DC voltage up to 28V with no damage. This could occur during winter if two batteries were series connected to crank the engine. UTC UNISONIC TECHNOLOGIES CO., LTD. 7 QW-R107-002,A UTC TDA2003 THERMAL SHUT-DOWN LINEAR INTEGRATED CIRCUIT The presence of a thermal limiting circuit offers the following advantages: 1).an overload on the output (even if it is permanent),or an excessive ambient temperature can be easily withstood. 2).the heat-sink can have a smaller factor compared with that of a conventional circuit. There is no device damage in case of excessive junction temperature: all that happens is that Po ( and there Ptot) and Id are reduced. APPLICATION SUGGESTION The recommended values of the components are those shown on application circuit of Fig.16. Different values can be used. The following table can help the designer. COMPONENT RECOMMENDED VALUE (Gv-1)*R2 2.2 1 PURPOSE LARGE THAN RECOMMENDED VALUE Decrease of SVR Danger of oscillation at high frequencies with inductive loads. Poor high frequencies attenuation LARGE THAN RECOMMENDED VALUE increase of Gain R1 R2 R3 gain setting. gain and SVR setting. Frequency stability Rx C1 C2 C3 C4 C5 20R2 2.2F 470F 0.1F 100F 0.1F Upper frequency cutoff Input DC decoupling Ripple rejection Supply voltage bypass Supply voltage bypass Frequency stability Dange of oscillation Noise at switch-on switch-off Decrease of SVR Dange of oscillation Higher low frequency cutoff Danger of oscillation at high frequencies with inductive loads. Larger bandwidth Cx 1/(2*B*R1) Upper frequency cutoff smaller bandwidth UTC UNISONIC TECHNOLOGIES CO., LTD. 8 QW-R107-002,A |
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