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70W Stereo Audio Amplifier

This is a stereo amplifier circuit diagram. The amplifier will produce stereo output channel with the power audio output can reach up to 70W for each channel. The amplifier built based great amplifier chip STA550 from STMicroelectronics. Take a note that this amplifier is a bridge amplifier, the speaker`s terminal should not connected to the groun visit page.

70W x 1ch BTL Power Amplifier

Circuit diagram for AN17850A:

70W AF power amp STK086G

Features:


Maxim supply voltage: +Vcc: 55VColector current: Icmax: 7 ALoad Resistance: RL: 8 Ohm

Circuit Diagram:

70W (6Ω) x 1ch BTL Power Amplifier Built-in Standby and Muting Features Incorporating Various Protection Circuits

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…