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