Philips TDA1556Q User Manual
INTEGRATED CIRCUITS
DATA SH EET
TDA1556Q
2 x 22 W stereo BTL differential
amplifier with speaker protection
and dynamic distortion detector
Product specification
File under Integrated Circuits, IC01
July 1994
Philips Semiconductors Product specification
2 x 22 W stereo BTL differential
amplifier with speaker protection and
TDA1556Q
FEATURES
• Few peripheral components
• High output power
• Low output offset voltage
• Fixed gain
• Loudspeaker protection (with diagnostic facility)
• Differential inputs
• Thermally protected
• Reverse polarity safe
• High energy handling capability at the outputs (V
• Electrostatic discharge protection
• No switch-on/switch-off plop
• Flexible leads
• Low thermal resistance
P
• Dynamic Distortion Detector (DDD)
• High common mode input signal
• Very high CMRR
• Good ripple rejection
• Mute/stand-by switch
• Load dump protection
• Short-circuit safe
GENERAL DESCRIPTION
TDA1556Q is a monolithic integrated class-B output
amplifier containing two 22 Watt amplifiers in a BTL
configuration. The device is contained in a 17-lead
single-in-line (SIL) plastic power package. It has two
differential inputs and is primarily intended for car booster
applications.
QUICK REFERENCE DATA
SYMBOL PARAMETER CONDITION MIN. TYP. MAX. UNIT
V
P
positive supply voltage
operating 6.0 14.4 18 V
non-operating −−30 V
load dump −−45 V
I
ORM
I
P
I
sb
I
sw
input impedance 50 −−kΩ
Z
i
T
vj
P
O
SVRR supply voltage ripple rejection R
V
os
repetitive peak output current −−4A
total quiescent current − 80 − mA
stand-by current − 0.1 100 µA
switch-on current −−60 µA
virtual junction temperature −−150 °C
output power 4 Ω; THD = 10% − 22 − W
= 0 Ω; f = 100 Hz to 10 kHz 48 −−dB
S
DC output offset voltage −−100 mV
α channel separation 40 −−dB
∆G
v
channel unbalance −−1dB
CMRR rejection ratio − 72 − dB
= 0 V)
ORDERING INFORMATION
EXTENDED TYPE NUMBER
PINS PIN POSITION MATERIAL CODE
TDA1556Q
(1)
17 SIL plastic SOT243R
Note
1. SOT243-1; 1996 August 19.
July 1994 2
PACKAGE
Philips Semiconductors Product specification
2 x 22 W stereo BTL differential amplifier
with speaker protection and dynamic
handbook, full pagewidth
input 1A
1
mute switch
V
P
513
TDA1556Q
input 1B
DDD
LSP
n.c.
2
4
stand-by
switch
V
15
9
A
x1
VA
mute switch
VA
stand-by
reference
voltage
mute
switch
TDA1556Q
6
8
14
output 1A
output 1B
mute/stand-by
input 2A
input 2B
n.c.
16
17
3
11
powerground
7
mute switch
VA
mute switch
VA
Fig.1 Block diagram.
July 1994 3
10
12
MLA383-2
output 2A
output 2B
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