GENERAL DESCRIPTION

The SSM2166 integrates a complete and flexible solution for conditioning microphone inputs in computer audio systems. It is also excellent for improving vocal clarity in communications and public address systems. A low noise, voltage-controlled amplifier (VCA) provides a gain that is dynamically adjusted by a control loop to maintain a set compression characteristic.

FEATURES

Complete microphone conditioner in a 14-lead SOIC package

Single 5 V operation

Adjustable noise gate threshold

Compression ratio set by external resistor

Automatic limiting feature—prevents ADC overload

Adjustable release time

Low noise and distortion

Power-down feature

20 kHz bandwidth (±1 dB)

APPLICATIONS

Microphone preamplifiers/processors

Computer sound cards

Public address/paging systems

Communication headsets

Telephone conferencing

Guitar sustain effects generators

Computerized voice recognition

Surveillance systems

Karaoke and DJ mixers