SSM2167 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. It features low noise, adjustable noise gate threshold, adjustable compression ratio, and automatic limiting feature.
The SSM2167 is a complete microphone conditioner that provides adjustable compression, noise gating, limiting and a low‑power shutdown mode. It is supplied in a 10‑lead MSOP package and operates from a single 3 V supply, making it suitable for portable and battery‑powered audio devices.
The document includes detailed specifications, pin configuration, typical performance curves, and an ordering guide for the SSM2167 and its variants. It also contains revision history and safety notes such as absolute maximum ratings and ESD precautions.
| Supply Voltage | 5.5 V |
|---|---|
| Supply Current | 5 mA |
| VCA Dynamic Gain Range | 40 dB |
| VCA Fixed Gain | 18 dB |
| Compression Ratio (min) | 1:1 |
| Compression Ratio (max) | 10:1 |
| Rotation Point | 63 mV rms |
| Noise Gate Range (max threshold) | -40 dBV |
| Input Impedance | 100 kΩ |
| Output Impedance | 145 Ω |
| THD+N | 0.2 % |
| Bandwidth | 20 kHz |
| Operating Temperature Range | ‑40 °C to +85 °C |
| Shutdown Current | <2 µA |
The device operates from a 5.5 V supply.
It is rated for –40 °C to +85 °C.
The shutdown current is less than 2 µA.
The compression ratio can be set up to 10:1.