ISL28291FRUZ-T7

Instrumentation, Op Amps, Buffer Amps Overview

The ISL28291FRUZ-T7 is a single-channel ultra-low noise operational amplifier manufactured by Renesas Electronics Corporation. It features a gain-bandwidth product of 61 MHz and a slew rate of 17 V/µs. The device operates on a single supply voltage ranging from 3V to 5.5V with a typical supply current of 2.6 mA per amplifier. Key electrical characteristics include an input voltage noise density of 1.7 nV/√Hz at 1 kHz, a maximum offset voltage of 0.63 mV, and an input bias current of 3 µA. It offers rail-to-rail output capability and supports operation across a temperature range of -40°C to +125°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Ultra-low input voltage noise density of 1.7 nV/√Hz for high-fidelity signal processing
• Rail-to-rail output swing extending to ground (ground sensing) for maximum dynamic range
• High bandwidth and fast slew rate supporting precision applications up to 61 MHz
• Low distortion performance with typical THD+N of 0.00018% at 1 kHz

Instrumentation, Op Amps, Buffer Amps Applications

• LVDT displacement measurement systems
• High-precision industrial sensor interfaces
• Medical instrumentation requiring low-noise amplification
• Audio preamplifiers demanding ultra-low distortion

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix 'FRUZ' against the official datasheet to confirm the package type and tape/reel configuration. Ensure the operating environment remains within the specified -40°C to +125°C temperature range. Confirm that the single-supply voltage requirements align with the 3V to 5.5V specification before integration into the design.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when ultra-low noise and low distortion are critical constraints. It is suitable for single-supply designs requiring rail-to-rail output. Compare against the dual-channel ISL28292 if multiple channels are needed. Verify that the 61 MHz bandwidth meets the system's frequency response requirements without introducing stability issues.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the ISL28191/ISL28291 family of micro power, ultra-low noise operational amplifiers. The family includes single-channel (ISL28191/ISL28291) and dual-channel (ISL28192/ISL28292) variants. These devices share identical electrical characteristics but differ in channel count and packaging options such as UTDFN, SOT-23, SOIC, UTQFN, and MSOP.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Check for direct pin-compatible alternatives within the ISL28191/ISL28291 series. Verify that any substitute maintains the 1.7 nV/√Hz noise floor and 61 MHz bandwidth. Ensure the replacement package matches the FRUZ designation for PCB compatibility.