UTC UTCTEA2025 Datasheet

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

PIN CONFIGURATIONS

BRIDGE

BOOT.2

FEEDBACK

IN.2 (+)

OUT.2

GND

GND

1

2

3

4

5

6

7

16

+Vs

15

OUT.1

14

BOOT.1

13

GND

12

GND

11

FEEDBACK

10

IN.1 (+)

98

GND (sub)SVR

DIP-16

BLOCK DIAGRAM

9 10 11 12 13 14 15

50

8

7

THERMAL

PROTECTION

START

CIRCUIT

Ω

50

Ω

10k

Ω

DECOUPLING

10k

Ω

4

5k

Ω

16

50

Ω

1

2356

UTC UNISONIC TECHNOLOGIES CO., LTD.

QW-R107-003,A

1

UTC TEA2025 LINEAR INTEGRATED CIRCUIT

ABSOLUTE MAXIMUM RATINGS

PARAMETER SYMBOL VALUE UNIT

Supply Voltage VS 15 V
Output Peak Current IO 1.5 A
Junction Temperature Tj 150 °C
Storage Temperature Tstg -40 ~ +150 °C

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

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT

Supply Voltage VS 3 12 V
Quiescent Current IQ 40 50 mA
Quiescent output voltage VO 4.5 V
Voltage gain AV Stereo 43 45 47 dB

Bridge 49 51 53
Voltage gain difference ∆AV +-1 dB
Input impedance Ri 30 kΩ

f=1kHz;d=10%

Stereo per channel

VCC=9V;RL=4Ω

RL=8Ω

Output Power PO VCC=6V;RL=4Ω

Distortion d

Supply voltage Rejection SVR

Input noise Voltage Vn

Cross-Talk C.T. RG=10kΩ;

RL=8Ω

VCC=3V;RL=4Ω 0.1

Bridge

VCC=9V;RL=8Ω
VCC=6V;RL=4Ω 2.8
VCC=9V;RL=4Ω

f=1kHz;PO=250mW

Stereo 0.3 1.5 %

Bridge 0.5

RG=0;AV=45dB

Vripple=150mVRMS

Fripple=100Hz

AV=200

Bandwidth:

20Hz to 20kHz

RG=0

RG=10kΩ

f=1kHz;RL=4Ω

PO=1W

1.7 2.3

1.3

0.7 1

0.6 W

4.7

40 46 dB

1.5

40 55 dB

3

3

6

µV

UTC UNISONIC TECHNOLOGIES CO., LTD.

QW-R107-003,A

2