UTC TEA2025A中文资料
UTC TEA2025A LINEAR INTEGRATED CIRCUIT
UTC UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R107-012,A
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=4? Bridge: Po=4.7W (Typ) at Vcc=9V, RL=8?*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
BLOCK DIAGRAM
UTC TEA2025A LINEAR INTEGRATED CIRCUIT
UTC UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R107-012,A
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL VALUE UNIT Supply Voltage V S 15V Power Dissipation
Pd 4*W Operating Temperature Topr -20 ~ +70°C Storage Temperature
Tstg
-40 ~ +150
°C
ELECTRICAL CHARACTERISTICS (Ta=25°C ,V CC =9V, Rg=600?, Unless otherwise specified)
PARAMETER
SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Operating Supply Voltage Vcc 911V Quiescent Current
Icc Vi=0, Stereo
4055mA Closed Loop Voltage Gain Av Stereo, Vi=-45dBm 434547dB Bridge, Vi=-45dBm 495153dB Channel Balance CB Stereo
-10+1
dB Output Power
PO
Stereo, RL=4?, THD=10% 1.7
2.3W Stereo, RL=8?, THD=10% 1.3W Bridge, RL=8?, THD=10% 4.7W Total Harmonic Distortion THD Stereo, Po=250mW, R L =4?0.3 1.5
%Bridge, Po=250mW, R L =4?0.5%Input Resistance Ri 2130k ?Rijpple Rejection RR Stereo, Rg=0?, Vr=150mV,f=100Hz
40
46dB Output Noise Voltage V NO Stereo, Rg=0?0.31mV Stereo, Rg=10K ?
0.52
mV Cross-Talk
CT
Stereo, Rg=10K ?, Vo=0dBm
40
55
dB
UTC TEA2025A LINEAR INTEGRATED CIRCUIT
UTC UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R107-012,A
APPLICATION CIRCUIT: Stereo Amplifier
APPLICATION CIRCUIT: Bridge Amplifier
UTC TEA2025A LINEAR INTEGRATED CIRCUIT
UTC UNISONIC TECHNOLOGIES CO., LTD.
4
QW-R107-012,A
VOLTAGE GAIN ADJUSTMENT 1. Stereo application
2. Bridge application
UTC TEA2025A LINEAR INTEGRATED CIRCUIT
UTC UNISONIC TECHNOLOGIES CO., LTD.
5
QW-R107-012,A
OUTPUT PORWER-INPUT VOLTAGE
PREQUENCY RESPONSE
UTC TEA2025A LINEAR INTEGRATED CIRCUIT
UTC UNISONIC TECHNOLOGIES CO., LTD.6
QW-R107-012,A
UTC TEA2025A LINEAR INTEGRATED CIRCUIT
UTC UNISONIC TECHNOLOGIES CO., LTD.
7
QW-R107-012,A
QUIESCENT CIRCUIT CURRENT SUPPLY VOLTAGE
QUIESCENT CIRCUIT CURRENT AMBIENT TEMPERATURE