February 1994

4

Philips Semiconductors

Product specification

2 x 1 W portable/mains-fed stereo

power amplifier

TDA7053

PINNING

Note

The information contained within the parentheses refer to the polarity of the loudspeaker terminal to which the output

must be connected.

FUNCTIONAL DESCRIPTION

The TDA7053 is a stereo output amplifier, with an internal gain of 39 dB, which is primarily for use in portable audio

applications but may also be used in mains-fed applications. The current trends in portable audio application design is

to reduce the number of batteries which results in a reduction of output power when using conventional output stages.

The TDA7053 overcomes this problem by using the Bridge-Tied-Load (BTL) principle and is capable of delivering 1.2 W

into an 8

Ω load (V

1.

SGND1

signal ground 1

9. OUT2A

output 2 (positive)

2.

IN1

input 1

10. GND2

power ground 2

3.

n.c.

not connected

11.

n.c.

not connected

4.

n.c.

not connected

12. OUT2B

output 2 (negative)

5.

supply voltage

13. OUT1B

output 1 (negative)

6.

IN2

input 2

14. GND1

power ground 1

7.

SGND2

signal ground 2

15. n.c.

not connected

8.

n.c.

not connected

16. OUT1A

output 1 (positive)