AN12941A - Panasonic Semiconductor

AN12941A Stereo Speaker Amplifier

Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 VCC SP gain high/low SW REG ripple filter pin Input for PCcard Standby on/off control R-channel input Main signal mute on/off control VREF R-channel for volume Audio mix amplifier R-channel output Volume control signal R-channel input R-channel output for HP amplifier Negative fe.

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 the automatic power saving).
 Operating supply voltage: VCC 3.0 V to 5.5 V/ VCC_SP 3.0 V to 5.5 V (0.25) 0.50 0.20±0.05 0.10 M Seating plane 0.10±0.10 (1.00) 1.20 max. 1 28 0° to 8° 0.50±0.10 .