SSM2166SZ-REEL7

SSM2166 is a microphone preamplifier with variable compression and noise gating. It 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. The compression ratio is set by a single resistor and can be varied from 1:1 to over 15:1 relative to a user-defined rotation point; signals above the rotation point are limited to prevent overload and to eliminate popping. It is used in applications such as 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.

• Single 5V 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, 20KHz bandwidth (±1dB)
• Supply current is 7.5mA typical at (V+ = 5V, f = 1KHz)
• Voltage noise density is 17nV/√Hz typical at (V+ = 5V, f = 1KHz)
• Total harmonic distortion and noise is 25% typical at (V+ = 5V, f = 1KHz)
• Operating temperature is -40°C to +85°C
• Package style is 14-lead standard small outline [SOIC-N]

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ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party