Amplifier 1W variable

A 1W power amplifier building block designed to be part of a larger project needing a low power battery operated amplifier into an 8 ohm speaker.

D.C. input : 3 -15 V at < 300 mA.

Idle current < 8 mA, 4 mA typical.

Power output > 1 Watt @ 8 ohms maximum.

> 0.25 Watt RMS continuous

Freq. Resp. > 20 Hz 20 kHz

~ 10 -50 kHz, -3dB

THD < 1 % @ 100 mW, 0.2% Typ.

S/N ratio > 70 dBA

Gain ~ 30 dB maximum.

Input Z ~ 10 k ohm.