Philips (Now NXP) TDA7056 Schematic [ru]

INTEGRATED CIRCUITS

DATA SH EET

TDA7056

3 W mono BTL audio output
amplifier

Product specification
File under Integrated Circuits, IC01

May 1992

Philips Semiconductors Product specification

3 W mono BTL audio output amplifier TDA7056

FEATURES

• No external components

• No switch-on/off clicks

• Good overall stability

• Low power consumption

GENERAL DESCRIPTION

The TDA7056 is a mono output amplifier contained in a
9 pin medium power package.
The device is designed for battery-fed portable mono
recorders, radios and television.

• Short circuit proof

• ESD protected on all pins.

QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

P

P

O

G

V

I

P

THD total harmonic distortion P

supply voltage 3 11 18 V
output power in 16 Ω VP = 11 V 2.5 3 − W
internal voltage gain 39 40.5 42 dB
total quiescent current VP = 11 V; − 57mA

R

= ∞

L

= 0.5 W − 0.25 1 %

O

ORDERING INFORMATION

EXTENDED

TYPE NUMBER

PINS PIN POSITION MATERIAL CODE

PACKAGE

TDA7056 9 SIL plastic SOT110

(1)

Note

1. SOT110-1; 1996 August 21.

May 1992 2

Philips Semiconductors Product specification

3 W mono BTL audio output amplifier TDA7056

PINNING

PIN DESCRIPTION

1 n.c.
2V
3 input (+)
4 signal ground
5 n.c.
6 output (+)
7 power ground
8 output (−)
9 n.c.

P

Fig.1 Block diagram.

FUNCTIONAL DESCRIPTION

The TDA7056 is a mono output amplifier, designed for
battery-fed portable radios and mains-fed equipment such
as television. For space reasons there is a trend to
decrease the number of external components. For
portable applications there is also a trend to decrease the
number of battery cells, but still a reasonable output power
is required.

The TDA7056 fulfills both of these requirements. It needs
no peripheral components, because it makes use of the
Bridge-Tied-Load (BTL) principle. Consequently it has, at
the same supply voltage, a higher output power compared
to a conventional Single Ended output stage. It delivers an
output power of 1 W into a loudspeaker load of 8 Ω with 6
V supply or 3 W into 16 Ω loudspeaker at 11 V without
need of an external heatsink. The gain is internally fixed at
40 dB. Special attention is given to switch-on/off click
suppression, and it has a good overall stability. The load
can be short circuited at all input conditions.

May 1992 3