AmplifierCircuits

 TDA1562Q   g eneral 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 signals Proof against short-circuits Protection against excessive temperatures Standby switch No power-on or power-off clicks Visible error indication Measurement results (at Ub =14.4 V) Supply voltage 8–18 V Sensitivity 760 mV r.m...

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: Th...