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

Stereo 2-W Audio Power Amplifier

Features: Low Operating Current with 14mA ImprovedDepop Circuitry to Eliminate Turn-on and Turn-off Transients in Outputs  High PSRR 32 Steps VolumeAdjustable by DC Voltage  with Hysteresis 2W per Channel Output Power into 4W Load  at 5V, BTL Mode Two Output ModesAllowable with BTL  and SE Modes Selected by SE/BTL pin Low Current Consumption in Shutdown Mode  (50mA) Short Circuit Protection Power Off Depop Circuit Integration PDIP-16 & SOP-16 PackagesAvailable Lead FreeAvailable (RoHS Compliant) General Description: APA2065 is a monolithic integrated circuit, which  provides precise DC volume control, and a stereo  bridged audio power amplifiers capable of producing  2.7W(2.0W) into 3W withless than10%(1.0%)THD+N.  The attenuatorrange of the volumecontrol inAPA2065  is from 20dB (DC_Vol=0V) to -80dB (DC_Vol=3.54V)  with 32 steps. The advantage of internal gain setting  can be less component...

GENERAL DESCRIPTION The TDA1552Q is an integrated class-B output amplifier in a 13-lead single-in-line (SIL) plastic power package.  The circuit contains 2 x 22 W amplifiers in Bridge Tied Load (BTL) configuration. The device is primarily developed for  car radio applications. Features Requires very few external components High output power Low offset voltage at outputs Fixed gain Good ripple rejection Mute/stand-by switch Load dump protection AC and DC short-circuit-safe to ground and VP Thermally protected Reverse polarity safe Capability to handle high energy on outputs (VP = 0 V) Protected against electrostatic discharge No switch-on/switch-off plop Low thermal resistance Flexible leads. Circuit diagram: Circuit diagram for TDA1552Q 2 x 22 W BTL stereo car radio power amplifier