Philips Semiconductors
70 W high efficiency power amplifier
with diagnostic facility
Preliminary specification
TDA1562Q; TDA1562ST;
TDA1562SD
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 TDA1562 is a monolithic integrated 70 W/4 Ω
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 radios and boosters) as well as mains fed applications
(e.g. midi/mini audio combinations and TV sound).
QUICK REFERENCE DATA
VP = 14.4 V; RL = 4 Ω; Rs = 0 Ω; f = 1 kHz; Tamb = 25 °C; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
VP
Iq
Istb
VOO
∆VOO
Gv
Zi(dif)
Po
THD
supply voltage
quiescent current
standby current
output offset voltage
delta output offset voltage
voltage gain
differential input impedance
output power
total harmonic distortion
operating; note 1
8
non-operating
−
load dump
−
on and mute; RL = open −
circuit
standby
−
on and mute
−
on ↔ mute
−
25
90
THD = 0.5%
45
THD = 10%
60
Po = 1 W
−
Po = 20 W
−
DDD active
−
TYP.
14.4
−
−
110
3
−
−
26
150
55
70
0.03
0.06
2.1
MAX.
18
30
45
150
50
100
30
27
−
−
−
−
−
−
UNIT
V
V
V
mA
µA
mV
mV
dB
kΩ
W
W
%
%
%
2003 Feb 12
2