
1998 Apr 07
2
Philips Semiconductors
Preliminary specication
70 W high efciency power amplier
with diagnostic facility
TDA1562Q
FEATURES
Very high output power, operating from a single low
supply voltage
Low power dissipation, when used for music signals
Switches to low output power at too high case
temperatures
Few external components
Fixed gain
Differential inputs with high common mode rejection
Mode select pin (on, mute and standby)
Status I/O pin (class-H, class-B and fast mute)
All switching levels with hysteresis
Diagnostic pin with information about:
– Dynamic Distortion Detector (DDD)
– Any short-circuit at outputs
– Open load detector
– Temperature protection.
No switch-on or switch-off plops
Fast mute on supply voltage drops
Quick start option (e.g. car-telephony/navigation)
Low (delta) offset voltage at the outputs
Load dump protection
Short-circuit safe to ground, supply voltage and across
the load
Low power dissipation in any short-circuit condition
Protected against electrostatic discharge
Thermally protected
Flexible leads.
GENERAL DESCRIPTION
The TDA1562Q is a monolithic integrated 70 W/4
Bridge-Tied Load (BTL) class-H high efficiency power
amplifier in a 17-lead DIL-bent-SIL plastic power
package.
The device can be used for car audio systems (e.g. car,
radio and boosters) as well as mains fed applications (e.g.
midi/mini audio combinations and TV sound).
QUICK REFERENCE DATA
Test conditions: VP = 14.4 V; RL =4 ; Rs =0 ; f = 1 kHz; Tamb =25 °C; unless otherwise specied.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
VP
supply voltage
operating
8
14.4
18
V
non-operating
30
V
load dump
45
V
Iq(tot)
total quiescent current
on and mute;
RL = open circuit
110
150
mA
Istb
standby current
standby
150
A
VOO
output offset voltage
on and mute
100
mV
V
OO
delta output offset voltage
on
mute
30
mV
Gv
voltage gain
25
26
27
dB
Zi(dif)
differential input impedance
90
150
k
Po
output power
THD = 0.5%
45
55
W
THD = 10%
60
70
W
THD
total harmonic distortion
Po =1W
0.03
%
Po =20W
0.06
%
DDD active
10
%
SVRR
supply voltage ripple rejection
on and mute
60
70
dB
CMRR
common mode rejection ratio
on
70
80
dB
ISRR
input signal rejection ratio
mute
80
90
dB
Vn(o)
noise output voltage
on
100
150
V