MC34119 Datasheet (Motorola) - LOW POWER AUDIO AMPLIFIER

MC34119, LOW POWER AUDIO AMPLIFIER

Symbol CD FC2 FC1 Pin 1 2 3 Description Chip Disable * Digital input.

A Logic “0” (<0.8 V) sets normal operation.

A logic “1” (≥2.0 V) sets the power down mode.

Input impedance is nominally 90 kΩ .

A capacitor at this pin increases power supply rejection, and affects turn *on time.

Order this document by MC34119/D Low Power Audio Amplifier The MC34119 is a low power audio amplifier intergrated circuit intended (primarily) for telephone applications, such as in speakerphones.

It provides differential speaker outputs to maximize output swing at low supply voltages (2.0 V minimum).

Coupling capacitors to the speaker are not required.

Open loop gain is 80 dB, and the closed loop gain is set with two external resistors.

A Chip Disable pin permits powering down and/or muting th

MC34119 Features

* 2.0 4.0 6.0 C1 = 1.0 µF VCC switching from 0 V to 6.0 V 8.0 10 C2, CAPACITANCE (µF) C1 = 5.0 µF Chip Disable The Chip Disable (Pin 1) can be used to power down the IC to conserve power, or for muting, or both. When at a Logic “0” (0 V to 0.8 V), the MC34119 is enabled for normal operation. When Pin