UTC UTCTEA2025A Datasheet

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.

QW-R107-012,A

1

UTC TEA2025A LINEAR INTEGRATED CIRCUIT

ABSOLUTE MAXIMUM RATINGS

PARAMETER SYMBOL VALUE UNIT

Supply Voltage VS 15 V
Power Dissipation Pd 4* W
Operating Temperature Topr -20 ~ +70 °C
Storage Temperature Tstg -40 ~ +150 °C

ELECTRICAL CHARACTERISTICS(Ta=25°C,VCC=9V, Rg=600Ω, Unless otherwise specified)

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT

Operating Supply Voltage Vcc 9 11 V
Quiescent Current Icc Vi=0, Stereo 40 55 mA
Closed Loop Voltage Gain Av Stereo, Vi=-45dBm 43 45 47 dB

Bridge, Vi=-45dBm 49 51 53 dB
Channel Balance CB Stereo -1 0 +1 dB
Output Power PO Stereo, RL=4Ω, THD=10% 1.7 2.3 W

Stereo, RL=8Ω, THD=10% 1.3 W

Bridge, RL=8Ω, THD=10% 4.7 W
Total Harmonic Distortion THD Stereo, Po=250mW, RL=4Ω 0.3 1.5 %

Bridge, Po=250mW, RL=4Ω 0.5 %
Input Resistance Ri 21 30 kΩ
Rijpple Rejection RR Stereo, Rg=0Ω, Vr=150mV,

Output Noise Voltage V

Cross-Talk CT Stereo, Rg=10KΩ, Vo=0dBm 40 55 dB

f=100Hz

Stereo, Rg=0Ω 0.3 1 mV

NO

Stereo, Rg=10KΩ 0.5 2 mV

40 46 dB

UTC UNISONIC TECHNOLOGIES CO., LTD.

QW-R107-012,A

2

UTC TEA2025A LINEAR INTEGRATED CIRCUIT

APPLICATION CIRCUIT: Stereo Amplifier

APPLICATION CIRCUIT: Bridge Amplifier

UTC UNISONIC TECHNOLOGIES CO., LTD.

QW-R107-012,A

3