The SSM2402/SSM2412 are dual analog switches designed specifically for high performance audio applications. Distortion and noise are negligible over the full audio operating range of 20 Hz to 20 kHz at signal levels of up to 10 V rms. The SSM2402/SSM2412 offer a monolithic integrated alternative to expensive and noisy relays or complex discrete JFET circuits. Unlike conventional general-purpose CMOS switches, the SSM2402/SSM2412 provide superb fidelity without audio “clicks” during switching. Conventional TTL or CMOS logic can be used to control the switch state. No external components are required.
The SSM2402 and SSM2412 are dual analog switches optimized for high‑performance audio applications, offering click‑less, break‑before‑make operation, low distortion, and excellent OFF‑isolation. They replace noisy relays and conventional CMOS switches with a bipolar‑JFET design that maintains low ON‑resistance across the audio band.
This handbook includes features, pin‑out diagrams, electrical specifications, performance graphs, application notes, and mechanical dimensions. It also covers switch operation, ramp‑generator behavior, over‑voltage protection, and optional resistor recommendations for optimal audio performance.
| Total Harmonic Distortion | 0.003% typ |
|---|---|
| Low Noise | 1 nV/√Hz |
| OFF‑Isolation | 120 dB typ |
| ON‑Resistance | 60 Ω typ |
| Turn‑ON Time (SSM2402) | 10.0 ms |
The SSM2402 turn‑on time is 10.0 ms.
The device provides 120 dB typical OFF‑isolation.
Yes, break‑before‑make operation is guaranteed by design.
The recommended power‑supply range is up to +20 V max.