The SSM2143 is an integrated differential amplifier from Analog Devices that is designed to receive balanced line inputs in audio applications. It features a high common-mode rejection ratio, low distortion, and a fast slew rate.
The SSM2143 is an integrated differential amplifier designed for balanced audio line inputs that require high immunity to common‑mode noise. It offers two gain options (½ or 2) and can handle input signals up to +28 dBu. The device is supplied in 8‑pin plastic DIP and SOIC packages.
Key performance figures include 90 dB typical common‑mode rejection, 0.0006 % THD+N at 1 kHz, a 7 MHz small‑signal bandwidth, and a 10 V/µs slew rate. Absolute maximum ratings allow up to ±18 V supply, ±44 V differential input, and operation from –40 °C to +85 °C.
| Common‑Mode Rejection (CMR) | 90 dB typ (DC, 60 Hz) |
|---|---|
| Small‑Signal Bandwidth | 7 MHz typ (G = ½) |
| Supply Voltage Range | ±6 V to ±18 V |
| Output Voltage Swing | ±13 V to ±14 V typ |
| Operating Temperature Range | –40 °C to +85 °C |
At 20 kHz the device offers a typical common‑mode rejection of 85 dB.
The absolute maximum supply voltage rating is ±18 V.
The device can be configured for a gain of ½ or a gain of 2 by swapping the input and feedback connections.