ISL28474FAZ

Instrumentation, Op Amps, Buffer Amps Overview

The ISL28474FAZ is a micropower, single-supply integrated circuit containing two instrumentation amplifiers and two precision operational amplifiers. It operates on a 2.4V to 5.0V supply with rail-to-rail input and output capabilities. The instrumentation amplifiers feature PMOS inputs with a maximum bias current of 30pA and are compensated for gains of 100 or higher. The precision amplifiers are unity-gain stable. Key electrical specifications include a maximum input offset voltage of 750µV for the instrumentation amplifier and 450µV for the operational amplifier. Total supply current is 350µA maximum.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Combines two micropower instrumentation amplifiers and two low power precision amplifiers in a single package
• Features rail-to-rail input and output operation optimized for single supply systems
• Provides high common-mode rejection ratio independent of external feedback resistor tolerances
• Utilizes PMOS input stages to achieve extremely low input bias currents

Instrumentation, Op Amps, Buffer Amps Applications

• Industrial process control systems
• Medical instrumentation devices
• 4mA to 20mA loop transmitters

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific ordering suffix 'FAZ' corresponds to the 24-lead QSOP plastic package configuration. Confirm that the component meets RoHS compliance standards as indicated by the Pb-free designation. Ensure the procurement documentation explicitly references the Intersil Americas Inc. datasheet FN6345.3 for accurate technical validation.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when designing circuits requiring multiple isolated signal conditioning channels within a compact footprint. The device is suitable for applications demanding high common-mode rejection without the complexity of discrete resistor networks. Consider the 2.4V minimum supply voltage constraint for battery-powered designs.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the ISL28274/ISL28474 family of micropower amplifiers manufactured by Intersil Americas Inc., now part of Renesas Electronics Corporation. The ISL28474 variant specifically provides dual instrumentation and dual operational amplifier channels, distinguishing it from the single-channel ISL28274 counterpart.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.