TDA7056 Datasheet, PDF (3/8 Pages) NXP Semiconductors – 3 W mono BTL audio output amplifier

Philips Semiconductors
3 W mono BTL audio output amplifier
Product specification
TDA7056
Fig.1 Block diagram.
PINNING
PIN
1
2
3
4
5
6
7
8
9
DESCRIPTION
n.c.
V_P
input (+)
signal ground
n.c.
output (+)
power ground
output (−)
n.c.
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