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
VP= 14.4 V; RL=4Ω; Rs=0Ω; f = 1 kHz; Tamb =25°C; unless otherwise specified.
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
VPsupply voltage operating; note 1 8 14.4 18 V
non-operating −−30 V
load dump −−45 V
Iqquiescent current on and mute; RL= open
circuit −110 150 mA
Istb standby current standby −350µA
V
OOoutput offset voltage on and mute −−100 mV
∆VOOdelta output offset voltage on ↔mute −−30 mV
Gvvoltage gain 25 26 27 dB
Zi(dif)differential input impedance 90 150 −kΩ
Pooutput 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 −2.1 −%