SSM2166SZ-REEL Microphone Preamplifiers MICROPHONE PREAMP W/VAR COMPRESS

Short Description:

Manufacturers: NA

Product Category: Linear – Amplifiers – Audio

Data Sheet: SSM2166SZ-REEL

Description: IC AMP CLASS AB MONO 14SOIC

RoHS status: RoHS Compliant


Product Detail

FEATURES

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Product Tags

♠ Product Description

Atributo del producto Valor de atributo
Fabricante: Analog Devices Inc.
Categoría de producto: Preamplificadores de micrófono
RoHS:  Detalles
Serie: SSM2166
Tipo de amplificador: Conditioning Microphone Preamplifier
Número de canales: 1 Channel
Ib - Polarización de entrada de tensión: -
Vos - Tensión offset de entrada: -
Resistencia de entrada máxima: 180 kOhms
Voltaje de alimentación - Máx.: 5.5 V
Voltaje de alimentación - Mín.: 4.5 V
Temperatura de trabajo mínima: - 40 C
Temperatura de trabajo máxima: + 85 C
Estilo de montaje: SMD/SMT
Paquete / Cubierta: SOIC-14
Empaquetado: Reel
Ajuste de ganancia disponible: 60 dB
Marca: Analog Devices
Clase: Class-AB
GBP: amplificador de ancho de banda: 30 MHz
Corriente de suministro operativa: 7.5 mA
Tipo de salida: Single
Producto: Microphone Preamplifiers
Tipo de producto: Microphone Preamplifiers
PSRR - Proporción de rechazo de suministro de energía: 50 dB
Cantidad de empaque de fábrica: 2500
Subcategoría: Audio ICs
Tipo de suministro: Single
Peso de la unidad: 0.011923 oz

♠ Microphone Preamplifier with Variable Compression and Noise Gating

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.

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. In the 1:1 compression setting, the SSM2166 can be programmed with a fixed gain of up to 20 dB; this gain is in addition to the variable gain in other compression settings. The input buffer can also be configured for front-end gains of 0 dB to 20 dB. A downward expander (noise gate) prevents amplification of 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 that may add noise or impair accuracy of speech recognition algorithms. The compression ratio and time constants are set externally. A high degree of flexibility is provided by the VCA gain, rotation point, and noise gate adjustment pins. The SSM2166 is an ideal companion product for audio codecs used in computer systems. The SSM2166 is available in a 14-lead SOIC package and is guaranteed for operation over the extended industrial temperature range of −40°C to +85°C.


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  • 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)

    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

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