LOW VOLTAGE AUDIO POWER AMPLIFIER
The UTC MC3419 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.
*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)
*Mute function (Icc=65µA, typ)
*Minimum number of external parts required