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2002 Mar 05 2
Philips Semiconductors Product specification
4 × 40 W BTL quad car radio power
amplifier
TDA8571J
FEATURES
• Requires very few external components
• High output power
• Low output offset voltage
• Fixed gain
• Diagnostic facility (distortion, short-circuit and
temperature pre-warning)
• Good ripple rejection
• Mode select switch (operating, mute and standby)
• Load dump protection
• Short-circuit safe to ground and to V
P
and across the
load
• Low power dissipation in any short-circuit condition
• Thermally protected
• Reverse polarity safe
• Electrostatic discharge protection
• No switch-on/switch-off plop
• Flexible leads
• Low thermal resistance
• Pin compatible with the TDA8568Q, except for the gain.
GENERAL DESCRIPTION
The TDA8571J is a integrated class-B output amplifier
contained in a 23-lead Single-In-Line (SIL) plastic power
package. It contains four amplifiers in a BTL configuration,
each with a gain of 34 dB. The output power is 4 × 40 W
(EIAJ) into a 4 Ω load.
APPLICATIONS
• Primarily developed for car radio applications.
QUICK REFERENCE DATA
ORDERING INFORMATION
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
V
P
operating supply voltage 6 14.4 18 V
I
ORM
repetitive peak output current −−7.5 A
I
q(tot)
total quiescent current − 200 − mA
I
stb
standby current − 0.2 100 µA
I
sw
switch-on current −−80 µA
Z
i
input impedance 25 30 − kΩ
P
o(EIAJ)
EIAJ output power THD = maximum − 40 − W
SVRR supply voltage ripple rejection R
s
=0Ω−50 − dB
α
cs
channel separation R
s
=10kΩ−50 − dB
G
v(cl)
closed-loop voltage gain 33 34 35 dB
V
n(o)
noise output voltage R
s
=0Ω−−170 µV
V
OS
DC output offset voltage MUTE −−80 mV
∆V
OS
delta DC output offset voltage ON ↔ MUTE −−80 mV
TYPE
NUMBER
PACKAGE
NAME DESCRIPTION VERSION
TDA8571J DBS23P plastic DIL-bent-SIL power package; 23 leads (straight lead length 3.2 mm) SOT411-1