HomedatasheetSSM2167-1RM

SSM2167-1RM Datasheet

Linear - Amplifiers - Audio
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Description

The SSM2167-1RM is a complete and flexible solution for conditioning microphone inputs in personal electronics and computer audiosystems. It is also excellentfor 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 singleresistor 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 (noisegate) 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. The flexibility of setting the compression ratio and the time constant of the level detector, coupled with two values of rotation point, make the SSM2167-1RM easy to integrate in a wide variety of microphone conditioning applications.The device is available in a 10-lead MSOP package, and is guaranteed for operation over the extended industrial temperature range of &minus;40&deg;C to +85&deg;C. SSM2167-1RM Features &bull; Complete microphone conditioner in a 10-lead package&bull; Single 3 V operation&bull; Low shutdown current < 2 &micro;A&bull; Adjustable noise gate threshold&bull; Adjustable compression ratio&bull; Automatic limiting feature prevents ADC overload&bull; Low noise and distortion: 0.2% THD + N&bull; 20 kHz bandwidth SSM2167-1RM Application &bull; Desktop, portable, or palmtop computers&bull; Telephone conferencing&bull; Communication headsets&bull; Two-way communications&bull; Surveillance systems&bull; Karaoke and DJ mixers
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Parameters

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Manufacturer information

SEIKO INSTRUMENTS

Seiko Instruments Inc. Is a Japanese company which head office is located in 8, Nakase 1-chome, Mihama-ku, Chiba-shi, Chiba 261-8507, Japan . It’s business lines are: Watches Business Watches, Watch Movements Electronic Components Business Quartz crystals, Micro batteries, etc. Precision Mechatronics Business Inkjet printer heads, Hard disk components, Thermal printers, Compact precision components, Machine tools, FA, Musical instrument accessories, Radiation detection and measurement systems, etc.


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