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TDA1562Q Audio Amplifier 50W

 TDA1562Qgeneral description: Philips designers have further improved a number of properties of the IC, among which the power output. According to the Philips datasheet, the improved device, the TDA1562Q, can deliver 70 watts into 4 ohms, but that is at the cost of the distortion, which at 10 per cent is rather too high, even for in a car. The prototype of the design described in this article provides 54 watts into 4 ohms at 1 per cent distortion. Since the number of requisite external components is smaller than in the case of the earlier device, the printed-circuit board is even more compact than that for the February 1995 amplifier.

 TDA1562Q features:
Low power dissipation during reproduction of music signalsProof against short-circuitsProtection against excessive temperaturesStandby switchNo power-on or power-off clicksVisible error indicationMeasurement results (at Ub=14.4 V)Supply voltage 8–18 VSensitivity 760 mV r.m.s.Input impedance 70 kΩPower output 54 W r.m.s. into 4 Ω (f=1 kHz…

70 W power amplifier circuit

FEATURES:
Very high output power, operating from a single low supply voltageLow power dissipation, when used for music signalsSwitches to low output power at too high case temperaturesFew external componentsFixed gainDifferential inputs with high common mode rejectionMode select pin (on, mute and standby)Status I/O pin (class-H, class-B and fast mute)All switching levels with hysteresisDiagnostic pin with information about:Dynamic Distortion Detector (DDD)Any short-circuit at outputsOpen load detectorTemperature protection.No switch-on or switch-off plopsFast mute on supply voltage dropsQuick start option (e.g. car-telephony/navigation)Low (delta) offset voltage at the outputsLoad dump protectionShort-circuit safe to ground, supply voltage and across the loadLow power dissipation in any short-circuit conditionProtected against electrostatic dischargeThermally protectedFlexible leads.
GENERAL DESCRIPTION:
The TDA1562Q is a monolithic integrated 70 W/4 Ω Bridge-Tied Load (BTL) class-H high…