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| TEA2025 STEREO AUDIO AMPLIFIER DESCRIPTION 2.5W * 2 Audio amplifier The BM TEA2025 is a monolithic integrated audio amplifier in a 16-pin plastic dual in line package. It is designed for portable cassette players and radios. FEATURES *Working Voltage down to 3V *Few External components *High Channel isolation *Voltage gain up to 45dB(Adjustable with external resistor) *Soft clipping *Internal Thermal protection DIP-16 PIN CONFIGURATIONS BRIDGE OUT.2 BOOT.2 GND GND FEEDBACK IN.2 (+) SVR 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 +Vs OUT.1 BOOT.1 GND GND FEEDBACK IN.1 (+) GND (sub) BLOCK DIAGRAM 9 10 11 50 THERMAL PROTECTION 10k 12 13 14 15 START CIRCUIT 5k 8 7 DECOUPLING 50 16 1 10k 50 6 5 4 3 2 www.bookly.com 1 TEA2025 ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage Output Peak Current Junction Temperature Storage Temperature 2.5W * 2 Audio amplifier SYMBOL VS IO Tj Tstg VALUE 15 1.5 150 -40 ~ +150 UNIT V A C C ELECTRICAL CHARACTERISTICS(Ta=25C,VCC=9V,Stereo,Unless otherwise specified) PARAMETER Supply Voltage Quiescent Current Quiescent output voltage Voltage gain Voltage gain difference Input impedance SYMBOL VS IQ VO AV AV Ri TEST CONDITIONS MIN 3 TYP 40 4.5 45 51 30 MAX 12 50 47 53 +-1 UNIT V mA V dB dB k Stereo Bridge 43 49 Output Power PO Distortion d Supply voltage Rejection SVR Input noise Voltage Vn Cross-Talk C.T. f=1kHz;d=10% Stereo per channel VCC=9V;RL=4 RL=8 VCC=6V;RL=4 RL=8 VCC=3V;RL=4 Bridge VCC=9V;RL=8 VCC=6V;RL=4 VCC=9V;RL=4 f=1kHz;PO=250mW Stereo Bridge RG=0;AV=45dB Vripple=150mVRMS Fripple=100Hz AV=200 Bandwidth: 20Hz to 20kHz RG=0 RG=10k RG=10k; f=1kHz;RL=4 PO=1W 1.7 0.7 2.3 1.3 1 0.6 0.1 4.7 2.8 W 0.3 0.5 40 46 1.5 % dB 40 1.5 3 55 3 6 V dB www.bookly.com 2 QW-R107-003,A TEA2025 THERMAL RESISTANCE Rth(j-c):Junction to case thermal resistance 15C/W Rth(j-a):Junction to ambient thermal resistance 60C/W 2.5W * 2 Audio amplifier TYPICAL PERFORMANCE CHARACTERISTICS d(%) 10 Distortion versus output power d(%) 1 Distortion versus output power Vcc=6V RL=8 Vcc=6V RL=40 1 0.1 0 0.2 0.4 0.6 0.8 1.0 1.2 P0(W) 0 0.2 0.4 0.6 0.8 1.0 1.2 P0(W) Distortion versus output Frequency 10 8 Output power/versus supply voltage d(%) Po(W) 6 Vcc=9V RL=9 Po=1.5W 1 4 f=1kHz d=10% RL=4 2 0.1 10 0 100 1k 10k f(Hz) 100k 0 4 8 12 Vcc(V) www.bookly.com 3 TEA2025 APPLICATION CIRCUIT Vcc 0.22 F 10 100 F 100 F 14 15 0.15F 2.5W * 2 Audio amplifier Vcc 0.22 F 100 F 100 F 14 15 0.15 F 470 F OUT1 16 Vin 100 F 11 Vin 1 10 100 F 11 16 RL 7 100F 6 100 F 1 8 100F 4,5,9,12,13 3 2 0.15F RL 0.22 F Vin 2 7 3 100 F 6 2 100 F 470 F 0.15 F OUT2 RL 100 F 8 4,5,9,12,13 Fig. 5 Bridge Application Fig.6 Stereo Application SCHEMATIC DIAGRAM 8 7 I2+ 6 I2+Vs 16 3 OUT 2 2 GND 9 4 5 I1+ 10 11 I114 OUT 1 15 12 1 13 www.bookly.com 4 |
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