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Audio Power Amplifier, AB, 1 Channel, 2.5V to 5.5V, MSOP, 10 Pins


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SSM2167 Series
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Product Overview

The SSM2167-1RMZ-REEL is a Low Voltage Microphone Preamplifier with variable compression and noise gating. This is a complete and flexible solution for conditioning microphone inputs in personal electronics and 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 10:1 relative to the fixed rotation point. Signals above the rotation point are limited to prevent overload and to eliminate popping. A downward expander (noise gate) prevents amplification of background noise or hum. This results in optimized signal levels prior to digitization, thereby eliminating the need for additional gain or attenuation in the digital domain.
  • Single 3V operation
  • Low shutdown current (<2µA)
  • Adjustable noise gate threshold
  • Adjustable compression ratio
  • Automatic limiting feature prevents ADC overload
  • Low noise and distortion (0.2% THD + N)
  • 20kHz Bandwidth


Computers & Computer Peripherals, Portable Devices, Communications & Networking, Audio


ESD sensitive device, take proper precaution while handling the device.

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1 Channel

2.5V to 5.5V






SSM2167 Series


MSL 1 - Unlimited
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Technical Docs (3)

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CAD Models and drawings are provided to you on a revocable limited licence for your internal use only but remain the property of the manufacturer who retain all intellectual property rights and ownership. They are provided to assist you in decision making and as design guide but are not guaranteed to be error free, accurate or up to date and is not intended to be taken as advice.
Use of these CAD models and other options provided are downloaded and used entirely at your own risk and by continuing you confirm acceptance of the above.

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