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2003 Feb 12 2
Philips Semiconductors Preliminary specification
70 W high efficiency power amplifier
with diagnostic facility
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
V
P
= 14.4 V; R
L
=4Ω; R
s
=0Ω; f = 1 kHz; T
amb
=25°C; unless otherwise specified.
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
V
P
supply voltage operating; note 1 8 14.4 18 V
non-operating −−30 V
load dump −−45 V
I
q
quiescent current on and mute; R
L
= open
circuit
− 110 150 mA
I
stb
standby current standby − 350µA
V
OO
output offset voltage on and mute −−100 mV
∆V
OO
delta output offset voltage on ↔ mute −−30 mV
G
v
voltage gain 25 26 27 dB
Z
i(dif)
differential input impedance 90 150 − kΩ
P
o
output power THD = 0.5% 45 55 − W
THD = 10% 60 70 − W
THD total harmonic distortion P
o
=1W − 0.03 − %
P
o
=20W − 0.06 − %
DDD active − 2.1 − %