ISL28478FAZ

Overview

The ISL28478FAZ is a quad general-purpose operational amplifier manufactured by Intersil, now part of Renesas Electronics. It features rail-to-rail output capability and operates on a single supply voltage ranging from 3V to 40V. The device offers a gain-bandwidth product of 300kHz and a typical slew rate of 0.14 V/µs. Supply current per channel is approximately 60µA, totaling 240µA for the quad configuration. It is housed in a 16-lead QSOP package.

Feature Summary

• Rail-to-rail output stage provides maximum dynamic range
• Single-supply operation compatible with low-voltage systems
• Quad configuration integrates four amplifiers in one package

Applications

• Signal conditioning circuits
• Sensor interface applications
• Battery-powered instrumentation

Procurement Notes

Verify the manufacturer status as Intersil specifications have been transferred to Renesas Electronics. Confirm the specific datasheet version, as product change notices may update electrical characteristics for the ISL28478 series. Ensure the package type matches the 16-QSOP requirement for your PCB layout.

Selection Notes

Select this component when a quad amplifier with rail-to-rail output is required for single-supply applications. Consider the 300kHz bandwidth and 0.14 V/µs slew rate for moderate-speed signal processing tasks. Evaluate the 3V to 40V supply range against your system power constraints.

Part Context

This component belongs to the ISL284xx series of precision operational amplifiers. The series includes variants with different channel counts and performance specifications. Intersil was acquired by Renesas, which continues to support these legacy parts under the Renesas portfolio.

Replacement Considerations

Check for direct pin-compatible substitutes within the ISL284xx family or equivalent quad rail-to-rail op-amps from other manufacturers. Verify that replacement parts meet the 300kHz gain-bandwidth and 0.14 V/µs slew rate requirements.