Op-amp achieves low noise plus low drift

6 November 2002 Analogue, Mixed Signal, LSI

Cirrus Logic's CS3001 family of single and dual operational amplifiers feature simultaneous low noise and low drift, plus exceptionally high open loop gain while operating from low voltages. Ideal for signal conditioning of low frequency applications, the family uses Cirrus' MultiPath technology originally developed for its DC measurement analog-to-digital converters. Precision amplification of low-level signals require amplifiers with low noise, low drift, and high open loop gain. The CS3001 products feature simultaneous low noise (6 nV/rt.Hz @ 0,5 Hz with a 1/f noise corner @ 0,08 Hz), low drift (0,05 mV/°C max), and high open loop gain. The OL gain approaches that of an ideal op-amp boasting an OL gain of 1000 trillion. The OL gain is tested and guaranteed to be at least 10 billion minimum. The devices also exhibit excellent CMRR and PSRR and common mode input range includes the negative supply rail. CS3001 family available in 8-pin SOIC package.

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