MC3419

低静态电流、中等输出功率、低失真、静音功能

LOW POWER AUDIO AMPLIFIER

DESCRIPTION

The is a low power audio amplifier integrated circuit, intended for the telephone

applications, such as in speakerphones. It provides differential speaker outputs to maximize output swing at low supply voltages. Coupling capacitor to the speaker is not required. Open loop gain is 80dB, and the closed loop gain is set with two external resistors.

A chips disable pin permits powering down and/or muting the input signal. 

FEATURES

*Wide operating supply voltage: Vcc=2V~16V

*Low quiescent supply current Icc=2.7mA, typ

*Medium output power Po=250mW at Vcc=6V, RL=32ohm, THD=10%

*Load impedance range 8 to 100ohm 

*Low distortion

*Mute function Icc=65µA, typ

*Minimum number of external parts required