CS3011-IS

Overview

The CS3011-IS is a precision low-voltage operational amplifier from Cirrus Logic, designed for DC to 1 kHz applications. It features a maximum input offset voltage of 10 µV and a drift of 0.05 µV/°C. The device exhibits low noise with a density of 12 nV/√Hz at 0.5 Hz and an input bias current of 50 pA. It operates on supply voltages ranging from 2.7 V to 6.7 V (±1.35 V to ±3.35 V) with a typical operating current of 2.4 mA. Key electrical parameters include a slew rate of 2 V/µs, a common-mode rejection ratio of 115 dB, and rail-to-rail output swing.

Feature Summary

• Chopper-stabilized architecture ensures excellent offset stability and super-high open-loop gain over time and temperature.
• Rail-to-rail output swing capability allows operation within the full supply voltage range.
• Common mode input range includes the negative supply rail for flexible signal interfacing.

Applications

• Thermocouple and thermopile amplifiers
• Load cell and bridge transducer amplifiers
• Precision instrumentation circuits
• Battery-powered systems

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and lead-free pin plating specifications against the official datasheet. Check for moisture sensitivity levels and storage requirements prior to assembly. Ensure the package marking matches the specific suffix designation to avoid counterfeit risks.

Selection Notes

Select this component when ultra-low offset voltage and minimal drift are critical for signal integrity. The low noise profile makes it suitable for high-gain closed-loop applications. Verify that the single-channel configuration meets the design requirements compared to dual-channel alternatives like the CS3012. Ensure the supply voltage range aligns with the system's power budget.

Part Context

The CS3011 belongs to the Cirrus Logic CS301x series of precision amplifiers. It serves as the single-channel counterpart to the dual-channel CS3012. Both devices share similar performance characteristics, including chopper stabilization and low-noise specifications, tailored for precision analog signal conditioning tasks in compact packages.

Replacement Considerations

Public confirmed substitute part numbers were not identified in the provided documentation. Consult the manufacturer for current lifecycle status and recommended obsolescence management strategies.