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INTEGRATED CIRCUITS
DATA SHEET
TDA7056B
5 W mono BTL audio amplifier with
DC volume control
Product specification
Supersedes data of 1996 May 28
1997 Aug 15
NXP Semiconductors
5 W mono BTL audio amplifier with DC
volume control
Product specification
TDA7056B
FEATURES
DC volume control
Few external components
Mute mode
Thermal protection
Short-circuit proof
No switch-on and switch-off clicks
Good overall stability
Low power consumption
Low HF radiation
ESD protected on all pins.
GENERAL DESCRIPTION
The TDA7056B is a mono Bridge-Tied Load (BTL) output
amplifier with DC volume control.
It is designed for use in TV and monitors, but is also
suitable for battery-fed portable recorders and radios.
The device is contained in a 9-pin medium power package.
A Missing Current Limiter (MCL) is built in. The MCL circuit
is activated when the difference in current between the
output terminal of each amplifier exceeds 100 mA
(300 mA typ.). This level of 100 mA allows for headphone
applications (single-ended).
QUICK REFERENCE DATA
SYMBOL
VP
PO
PARAMETER
supply voltage
output power
Gv(max)
Iq(tot)
THD
maximum total voltage gain
gain control
total quiescent current
total harmonic distortion
CONDITIONS
VP = 12 V
RL = 16
RL = 8
VP = 12 V; RL =
PO = 0.5 W
MIN. TYP. MAX. UNIT
4.5
18 V
3 3.5 W
5 5.5 W
39.5 40.5 41.5 dB
68 73.5
dB
9.2 13
mA
0.3 1 %
ORDERING INFORMATION
TYPE
NUMBER
TDA7056B
PACKAGE
NAME
DESCRIPTION
SIL9MPF plastic single in-line medium power package with fin; 9 leads
VERSION
SOT110-1
1997 Aug 15
2
NXP Semiconductors
5 W mono BTL audio amplifier with DC
volume control
BLOCK DIAGRAM
Product specification
TDA7056B
handbook, full pagewidth
n.c.
n.c.
input
DC volume control
1
9
3
5
TDA7056B
VP
2
I+i
6 positive output
I –i
8
negative output
STABILIZER TEMPERATURE
Vref PROTECTION
47
signal
ground
power
ground
MSA708 — 1
Fig.1 Block diagram.
PINNING
SYMBOL
n.c.
VP
VI
GND1
VC
OUT+
GND2
OUT
n.c.
PIN DESCRIPTION
1 not connected
2 positive supply voltage
3 voltage input
4 signal ground
5 DC volume control
6 positive output
7 power ground
8 negative output
9 not connected
handbook, halfpage
n.c. 1
VP 2
VI 3
GND1 4
VC 5 TDA7056B
OUT 6
GND2 7
OUT 8
n.c. 9
MSA707
Fig.2 Pin configuration.
1997 Aug 15
3
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