AmplifierCircuits

General description: The TDA8946J is a dual-channel audio power amplifier with an output power of 2 × 15 W at an 8 Ω load and a 18 V supply. The circuit contains two Bridge Tied Load (BTL) amplifiers with an all-NPN output stage and standby/mute logic. The TDA8946J comes in a 17-pin DIL-bent-SIL (DBS) power package. The TDA8946J is printed-circuit board (PCB) compatible with all other types in the TDA894x family. One PCB footprint accommodates both the mono and the stereo products. Features: Few external components Fixed gain Standby and mute mode No on/off switching plops Low standby current High supply voltage ripple rejection Outputs short-circuit protected to ground, supply and across the load Thermally protected Printed-circuit board compatible Circuit Diagram: Circuit Diagram for 2 x 15 W stereo Bridge Tied Load (BTL) audio amplifier PCB layout: PCB layout TDA8946 Datasheet for TDA8946J:   Download

Block Diagram for AN5275: 15W x 2Ch Low Frequency Power Amplifier Circuit for TV

General description The TDA8932B is a high efficiency class-D amplifier with low power dissipation.  The continuous time output power is 2 × 15 W in stereo half-bridge application (RL = 4 Ω)  or 1 × 30 W in mono full-bridge application (RL = 8 Ω). Due to the low power dissipation  the device can be used without any external heat sink when playing music. Due to the  implementation of thermal foldback, even for high supply voltages and/or lower load  impedances, the device continues to operate with considerable music output power  without the need for an external heat sink.  The device has two full-differential inputs driving two independent outputs. It can be used  in a mono full-bridge configuration (BTL) or in a stereo half-bridge configuration (SE). Features Operating voltage from 10 V to 36 V asymmetrical or ±5 V to ±18 V symmetrical Mono-bridged tied load (full-bridge) or stereo single-ended (half-bridge) application Applicat...

Circuit Diagram Circuit diagram 15+15W DUAL BRIDGE AMPLIFIER