UTC TEA2025 LINEAR INTEGRATED CIRCUIT STEREO AUDIO AMPLIFIER DESCRIPTION The UTC 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 1 16 +Vs OUT.2 2 15 OUT.1 BOOT.2 3 14 BOOT.1 GND 4 13 GND GND 5 12 GND FEEDBACK 6 11 FEEDBACK IN.2 (+) 7 10 IN.1 (+) SVR 8 9 GND (sub) BLOCK DIAGRAM 9 10 11 12 13 14 15 50Ω 10kΩ THERMAL PROTECTION START CIRCUIT 5kΩ 8 16 DECOUPLING 50Ω 7 1 10kΩ 50Ω 6 UTC 5 4 3 2 UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R107-003,A UTC TEA2025 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL VALUE UNIT VS IO Tj Tstg 15 1.5 150 -40 ~ +150 V A °C °C Supply Voltage Output Peak Current Junction Temperature Storage Temperature ELECTRICAL CHARACTERISTICS(Ta=25°C,VCC=9V,Stereo,Unless otherwise specified) PARAMETER SYMBOL Supply Voltage Quiescent Current Quiescent output voltage Voltage gain VS IQ VO AV Voltage gain difference Input impedance ∆AV Ri Output Power PO Distortion d Supply voltage Rejection Input noise Voltage Cross-Talk UTC SVR Vn C.T. TEST CONDITIONS MIN TYP 3 Stereo Bridge 43 49 40 4.5 45 51 MAX UNIT 12 50 V mA V dB 47 53 +-1 30 f=1kHz;d=10% Stereo per channel VCC=9V;RL=4Ω RL=8Ω VCC=6V;RL=4Ω RL=8Ω VCC=3V;RL=4Ω Bridge VCC=9V;RL=8Ω VCC=6V;RL=4Ω VCC=9V;RL=4Ω f=1kHz;PO=250mW Stereo Bridge RG=0;AV=45dB Vripple=150mVRMS Fripple=100Hz AV=200 Bandwidth: 20Hz to 20kHz RG=0 RG=10kΩ RG=10kΩ; f=1kHz;RL=4Ω PO=1W 1.7 0.7 2.3 1.3 1 0.6 0.1 4.7 dB kΩ W 2.8 0.3 0.5 40 46 40 1.5 3 55 1.5 % dB 3 6 µV dB UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R107-003,A UTC TEA2025 LINEAR INTEGRATED CIRCUIT THERMAL RESISTANCE Rth(j-c):Junction to case thermal resistance 15°C/W Rth(j-a):Junction to ambient thermal resistance 60°C/W TYPICAL PERFORMANCE CHARACTERISTICS Distortion versus output power d(%) Distortion versus output power d(%) 1 10 Vcc=6V RL=8Ω Vcc=6V RL=40Ω 0.1 1 0 0.2 0.4 0.6 0.8 1.0 1.2 0 0.2 0.4 0.6 0.8 1.0 1.2 P0(W) P0(W) Distortion versus output Frequency Output power/versus supply voltage 8 10 d(%) Po(W) 6 Vcc=9V RL=9 Ω Po=1.5W f=1kHz d=10% RL=4Ω 4 1 2 0.1 0 10 UTC 100 1k 10k f(Hz) 100k 0 4 8 12 Vcc(V) UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R107-003,A UTC TEA2025 LINEAR INTEGRATED CIRCUIT APPLICATION CIRCUIT Vcc Vcc 100 µF 0.22 µF 16 10 Vin 100 µF 100 µF 0.22 µF 14 10 Vin 1 15 11 100 µF 0.15µF 7 RL 470 µF 0.15 µF 100 µF 4,5,9,12,13 6 100 µF Fig. 5 Bridge Application 8 OUT1 RL 100 µF 2 0.15µF 1 100µF 15 11 3 2 8 100 µF 14 7 Vin 2 3 100 µF 16 0.22 µF 100µF 6 100 µF 470 µF 0.15 µF OUT2 RL 4,5,9,12,13 Fig.6 Stereo Application SCHEMATIC DIAGRAM 8 7 I2+ 6 I2+Vs 16 3 OUT 2 2 GND 4 9 5 I1+ 10 11 I114 OUT 1 15 12 1 UTC 13 UNISONIC TECHNOLOGIES CO., LTD. 4 QW-R107-003,A