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July 1994 2
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
• 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
• Thermally protected
• Reverse polarity safe
• High energy handling capability at the outputs (V
P
= 0 V)
• Electrostatic discharge protection
• No switch-on/switch-off plop
• Flexible leads
• Low thermal resistance
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
ORDERING INFORMATION
Note
1. SOT243-1; 1996 August 19.
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
repetitive peak output current −−4A
I
P
total quiescent current − 80 − mA
I
sb
stand-by current − 0.1 100 µA
I
sw
switch-on current −−60 µA
Z
i
input impedance 50 −−kΩ
T
vj
virtual junction temperature −−150 °C
P
O
output power 4 Ω; THD = 10% − 22 − W
SVRR supply voltage ripple rejection R
S
= 0 Ω; f = 100 Hz to 10 kHz 48 −−dB
V
os
DC output offset voltage −−100 mV
α channel separation 40 −−dB
∆G
v
channel unbalance −−1dB
CMRR rejection ratio − 72 − dB
EXTENDED TYPE NUMBER
PACKAGE
PINS PIN POSITION MATERIAL CODE
TDA1556Q
(1)
17 SIL plastic SOT243R