UTC TEA2025A LINEAR INTEGRATED CIRCUIT 2.3W DUAL AUDIO POWER AMPLIFIER DESCRIPTION The UTC TEA2025A is a monolithic integrated circuit, consisting of a 2-channel power amplifier. It is suitable for stereo and bridge amplifier application of radio cassette tape recorders. FEATURES *High output power Stereo: Po=2.3W (Typ) at Vcc=9V, RL=4Ω Bridge: Po=4.7W (Typ) at Vcc=9V, RL=8Ω *Low switching distortion at high frequency *Small shock noise at the time of power on/off dur to a built-in muting circuit *Good ripple rejection due to a built-in ripple filter *Good channel separation *Soft tone at the time of output straiten *Closed loop voltage gain fixed 45dB (Bridge: 51dB) but availability with external resistor added *Minimum number of external parts required *Easy to design radiator fin DIP-12H BLOCK DIAGRAM UTC UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R107-012,A UTC TEA2025A LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL VALUE UNIT VS Pd Topr Tstg 15 4* -20 ~ +70 -40 ~ +150 V W °C °C Supply Voltage Power Dissipation Operating Temperature Storage Temperature ELECTRICAL CHARACTERISTICS(Ta=25°C,VCC=9V, Rg=600Ω, Unless otherwise specified) PARAMETER SYMBOL Operating Supply Voltage Quiescent Current Closed Loop Voltage Gain Vcc Icc Av Channel Balance Output Power CB PO Total Harmonic Distortion THD Input Resistance Rijpple Rejection Ri RR Output Noise Voltage VNO Cross-Talk CT UTC TEST CONDITIONS Vi=0, Stereo Stereo, Vi=-45dBm Bridge, Vi=-45dBm Stereo Stereo, RL=4Ω, THD=10% Stereo, RL=8Ω, THD=10% Bridge, RL=8Ω, THD=10% Stereo, Po=250mW, RL=4Ω Bridge, Po=250mW, RL=4Ω Stereo, Rg=0Ω, Vr=150mV, f=100Hz Stereo, Rg=0Ω Stereo, Rg=10KΩ Stereo, Rg=10KΩ, Vo=0dBm MIN TYP MAX UNIT 11 55 47 53 +1 21 40 9 40 45 51 0 2.3 1.3 4.7 0.3 0.5 30 46 V mA dB dB dB W W W % % kΩ dB 40 0.3 0.5 55 43 49 -1 1.7 1.5 1 2 UNISONIC TECHNOLOGIES CO., LTD. mV mV dB 2 QW-R107-012,A UTC TEA2025A LINEAR INTEGRATED CIRCUIT APPLICATION CIRCUIT: Stereo Amplifier APPLICATION CIRCUIT: Bridge Amplifier UTC UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R107-012,A UTC TEA2025A LINEAR INTEGRATED CIRCUIT VOLTAGE GAIN ADJUSTMENT 1. Stereo application 2. Bridge application UTC UNISONIC TECHNOLOGIES CO., LTD. 4 QW-R107-012,A UTC TEA2025A LINEAR INTEGRATED CIRCUIT OUTPUT PORWER-INPUT VOLTAGE UTC PREQUENCY RESPONSE UNISONIC TECHNOLOGIES CO., LTD. 5 QW-R107-012,A UTC TEA2025A LINEAR INTEGRATED CIRCUIT UTC UNISONIC TECHNOLOGIES CO., LTD. 6 QW-R107-012,A UTC TEA2025A LINEAR INTEGRATED CIRCUIT QUIESCENT CIRCUIT CURRENT SUPPLY VOLTAGE UTC QUIESCENT CIRCUIT CURRENT AMBIENT TEMPERATURE UNISONIC TECHNOLOGIES CO., LTD. 7 QW-R107-012,A