The SSM2165 is 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-cost, high-performance microphone preamplifier/processor with noise gate, limiter, and compression.
The SSM2165 is a complete microphone conditioner designed for computer audio systems, public address systems, and communication headsets. It integrates a voltage-controlled amplifier (VCA), automatic limiting, and a downward expander (noise gate) into a single 8-lead IC operating on a single +5 V supply.
The device is available in two versions, SSM2165-1 and SSM2165-2, distinguished by their rotation points and fixed VCA gains. The compression ratio is adjustable via an external resistor, ranging from 1:1 to over 15:1. It is available in Plastic DIP and Narrow SOIC packages.
| Supply Voltage | 4.5 V to 5.5 V |
|---|---|
| Operating Temperature Range | -40°C to +85°C |
| Bandwidth | 20 kHz |
| Load Drive (Resistive) | 5 kΩ |
| VCA Dynamic Gain Range | 40 dB |
| Compression Ratio | 1:1 to 15:1 |
The device operates on a single +5 V supply with a range of 4.5 V to 5.5 V.
The device is available in 8-lead Plastic DIP and Narrow SOIC packages.
The compression ratio is set by a single external resistor connected to the COMP RATIO SET pin.