Philips TDA7056A User Manual
INTEGRATED CIRCUITS
DATA SH EET
TDA7056A
3 W BTL mono audio output
amplifier with DC volume control
Product specificiation
File under Integrated Circuits, IC01
July 1994
Philips Semiconductors Product specificiation
3 W BTL mono audio output amplifier
TDA7056A
with DC volume control
FEATURES
• DC volume control
• Few external components
• Mute mode
• Thermal protection
• Short-circuit proof
• No switch-on and off clicks
• Good overall stability
• Low power consumption
• Low HF radiation
• ESD protected on all pins.
QUICK REFERENCE DATA
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
V
P
P
O
G
v
φ gain control range 75 80 − dB
I
P
THD total harmonic distortion V
positive supply voltage range 4.5 − 18 V
output power RL = 16 Ω; VP = 12 V 3 3.5 − W
voltage gain 34.5 35.5 36.5 dB
total quiescent current VP = 12 V; RL = ∞−816mA
GENERAL DESCRIPTION
The TDA7056A is a mono BTL output amplifier with DC
volume control. It is designed for use in TV and monitors,
but also suitable for battery-fed portable recorders and
radios.
Missing Current Limiter (MCL)
A MCL protection circuits is built-in. The MCL circuit is
activated when the difference in current between the
output terminal of each amplifier exceeds 100 mA (typical
300 mA). This level of 100 mA allows for headphone
applications (single-ended).
= 0.5 W − 0.3 1 %
P
ORDERING INFORMATION
EXTENDED TYPE
NUMBER
TDA7056A 9 SIL plastic SOT110
Note
1. SOT110-1; 1996 August 21.
PINS PIN POSITION MATERIAL CODE
PACKAGE
July 1994 2
Philips Semiconductors Product specificiation
3 W BTL mono audio output amplifier with
DC volume control
handbook, full pagewidth
n.c.
n.c.
positive input
DC volume control
1
V
ref
TDA7056A
STABILIZER
TEMPERATURE
PROTECTION
9
3
5
TDA7056A
V
P
2
6I + i
positive output
I – i
8
negative output
PINNING
SYMBOL PIN DESCRIPTION
n.c. 1 not connected
V
P
V
I
2 positive supply voltage
3 voltage input
GND1 4 signal ground
VC 5 DC volume control
OUT+ 6 positive output
GND2 7 power ground
OUT− 8 negative output
n.c. 9 not connected
Fig.1 Block diagram.
handbook, halfpage
signal
ground
GND1
OUT+
GND2
OUT−
4
n.c.
V
V
VC
n.c.
P
I
7
power
ground
1
2
3
4
TDA7056A
5
6
7
8
9
MGA072 - 1
MGA071
July 1994 3
Fig.2 Pin configuration.
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