CS3004-FS

Overview

The CS3004-FS is a dual precision operational amplifier manufactured by Cirrus Logic. It operates on supply voltages from 2.7 V to 5 V (±1.35 V to ±2.50 V) with a typical supply current of 2.1 mA. Key electrical characteristics include a maximum input offset voltage of 10 µV, an average drift of 0.05 µV/°C, and a low noise density of 17 nV/√Hz at 1 kHz. The device features rail-to-rail inputs and outputs, achieving swing within 10 mV of the rails under light loads. It provides a typical open-loop gain of 150 dB, a slew rate of 0.25 V/µs, and high common-mode rejection ratio (CMRR) of 120 dB.

Feature Summary

• Rail-to-rail input and output capability for maximizing dynamic range in low-voltage systems
• Ultra-low input offset voltage and drift ensuring high DC precision
• Low noise performance suitable for sensitive signal conditioning
• High open-loop gain and excellent CMRR/PSRR

Applications

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

Procurement Notes

Verify the specific suffix 'FS' corresponds to the standard 8-lead SOIC package without lead-free compliance if required, distinct from the 'FSZ' variant. Confirm the operating temperature range covers -40 °C to +125 °C for your application environment. Check current availability status as manufacturing schedules may change. Ensure ESD handling precautions are followed during assembly due to the sensitivity of the input stage.

Selection Notes

Select this component when high DC accuracy is critical in single-supply or split-supply environments. The rail-to-rail I/O allows operation closer to supply limits compared to traditional op-amps. Consider the 2.1 mA quiescent current against power budget constraints. The 8-lead SOIC package offers a balance of thermal performance and board space efficiency for general-purpose precision applications.

Part Context

The CS3004 belongs to Cirrus Logic's family of precision low-voltage amplifiers designed for battery-operated and portable equipment. It complements other parts like the CS3012 and CS3014, offering a dual-channel configuration optimized for low offset and drift. The device is intended for industrial and consumer applications requiring accurate amplification of small differential signals in noisy environments.

Replacement Considerations

The CS3004-FSZ is the lead-free version of the same functional device in the identical 8-lead SOIC package. Designers should verify pinout compatibility if substituting with other dual op-amps, though direct pin-for-pin replacements depend on specific electrical parameter matching such as offset voltage and bandwidth.

FAQ

What is the maximum input offset voltage for the CS3004-FS?

The maximum input offset voltage is specified as 10 µV.

Does the CS3004 support rail-to-rail operation?

Yes, the CS3004 features both rail-to-rail inputs and outputs, allowing the output to swing within 10 mV of the supply rails under typical load conditions.

What is the operating temperature range?

The CS3004-FS operates over an extended temperature range of -40 °C to +125 °C.