ISL28478FAZ

Instrumentation, Op Amps, Buffer Amps Overview

The ISL28478FAZ is a quad-channel micropower operational amplifier from Renesas Electronics Corporation, housed in a 16-lead QSOP package. It operates on a single supply voltage ranging from 2.4V to 5.5V or dual supplies of ±1.2V to ±2.75V. The device features rail-to-rail input and output capabilities with an Input Range Enhancement Circuit (IREC) allowing inputs to swing 10% above V+ and 100mV below V-. Key electrical specifications include a typical supply current of 240µA for all channels enabled, a maximum offset voltage of 225µV, and a gain-bandwidth product of 250kHz. It supports an operating temperature range of -40°C to +125°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Quad-channel micropower architecture optimized for low-voltage single-supply operation
• Rail-to-rail input and output performance enhanced by IREC technology
• High precision DC characteristics including low offset voltage and bias current
• Robust ESD protection and short-circuit tolerance

Instrumentation, Op Amps, Buffer Amps Applications

• Battery-powered systems
• Solar-powered devices
• Medical instrumentation
• Thermocouple amplifiers
• Photodiode pre-amplifiers

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific ordering suffix 'FAZ' corresponds to the Pb-free plastic QSOP package configuration. Confirm that the component meets RoHS compliance standards as indicated by the manufacturer's material specifications. Ensure the procurement channel provides valid traceability documentation for the Intersil/Renesas part number. Check for any recommended design-in notices regarding obsolete status or substitute recommendations.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when a quad-channel op amp is required for space-constrained designs needing micropower consumption. It is suitable for applications requiring high precision with minimal supply current draw. Consider the thermal resistance of the QSOP package if multiple channels are driven near their limits. Verify that the input signal range aligns with the extended common-mode voltage capabilities provided by the IREC feature.

Instrumentation, Op Amps, Buffer Amps Part Context

This device belongs to the ISL28x78 family of micropower op amps, which also includes the dual-channel ISL28278 variant. The family is characterized by its CMOS RRIO topology designed for battery-operated consumer and industrial electronics. While originally developed by Intersil, the product line is now managed under the Renesas Electronics Corporation portfolio following corporate acquisitions.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Consult official technical support for potential substitute products, as the datasheet notes this part may not be recommended for new designs.