AmplifierCircuits

Overview: AN12942B is an one-chip IC for the stereo speakers which can output 1 W by 8 Ω, headphone amplifiers, line amplifiers, and electronic volumes. The AGC circuit is built-in to prevent the resonance or the vibration by the speaker’s energy and the clipping distortion what is  called "broken up sound".  Also the AN12942B is built-in power saving on/off function automatically detecting input signal to save the power of speaker  amplifier. Circuit Diagram: Audio signal processing

Circuit diagram: Circuit diagram for 1 watt audio power amplifier circuit Datasheet for AN7116: Download

FEATURES: One pin digital volume control Volume setting with UP/DOWN pulses Flexibility in use Few external components Low saturation voltage of output stage Standby mode controlled by CMOS compatible levels Low standby current No switch-on/switch-off plops High supply voltage ripple rejection Protected against electrostatic discharge Outputs short circuit safe to ground, VP and across the  load Thermally protected. GENERAL DESCRIPTION: The TDA8551; TDA8551T is a one channel 1 W  Bridge-Tied Load (BTL) audio power  amplifier capable of  delivering 1 W output power to an 8 Ω load at THD = 10%   using a 5 V power supply. The circuit contains a BTL   power amplifier, a digital volume control and standby/mute   logic. The TDA8551T comes in an 8 pin SO package and   the TDA8551 in a 8 pin DIP package. Circuit diagram for 1 W BTL audio amplifier with digital  volume control Datasheet: TDA8851

General Description: The AN12941A is an amplifier IC for stereo  speakers which can output 1 W by 8 Ω or 2 W by 4 Ω.  The AGC circuit is built-in to prevent the resonance  or the vibration by the speaker's energy and the  clipping distortion what is called "broken up sound."  of the speakers.  Also, to reduce power consumption, AN12941A  has a built-in function which automatically detects the  input signal and can automatically enter power save  mode when there is no signal.  Features:  Speaker amplifier is 1 W × 2-channel: 8 Ω, VCC = 5 V or 2 W × 2-channel: 4 Ω, VCC = 5 V  Built-in AGC circuit  Prevention of the resonance or the vibration by  the speaker's energy and the clipping distortion  of the speaker by AGC at excessive input signal  (with AGC on/off switch).  Built-in automatic power saving function  It detects input signals and switches on/off (with  the on/off switch for ...

1-W output (8 Ω) with supply voltage of 5 V On-chip standby function On-chip volume function Circuit Diagram: Dual 1-W BTL audio power amplifier

GENERAL DESCRIPTION The TDA7052 is a mono output amplifier in a 8-lead dual-in-line (DIL) plastic package. The device is designed for  battery-fed portable audio applications. Features: No external components No switch-on or switch-off clicks Good overall stability Low power consumption No external heatsink required Short-circuit proof Circuit Diagram 1 W BTL mono audio amplifier