The CS3001 and CS3002 are low-voltage precision amplifiers from Cirrus Logic that are ideal for applications requiring very high closed-loop gains. Their features include low offset, low drift, low noise, and high open-loop gain.
The CS3001 single‑amplifier and CS3002 dual‑amplifier are designed for precision amplification of low‑level signals from DC to 2 kHz. They are suited for thermocouple, load‑cell, instrumentation, and battery‑powered applications, offering very high closed‑loop gain, low offset drift, and excellent CMRR and PSRR.
Key specifications include a low offset of 10 µV max, input noise of 6 nV/√Hz at 0.5 Hz, typical open‑loop gain of 300 dB, supply voltage range of 2.7 V to 6.7 V, and a slew rate of 5 V/µs. The devices are supplied in an 8‑lead SOIC package.
| Input Offset Voltage | 10 µV Max |
|---|---|
| Input Noise Voltage Density | 6 nV/√Hz @ 0.5 Hz |
| Open‑loop Voltage Gain | 300 dB Typical |
| Supply Voltage Range | 2.7 V to 6.7 V |
| Slew Rate | 5 V/µs |
The amplifiers operate from a total supply voltage of 2.7 V to 6.7 V.
The typical input offset voltage is 10 µV maximum.
The typical open‑loop voltage gain is 300 dB.