ISL28191FRUZ-T7

Instrumentation, Op Amps, Buffer Amps Overview

The ISL28191FRUZ-T7 is a single-channel, ultra-low noise, low distortion operational amplifier manufactured by Renesas. It features rail-to-rail output and input common-mode voltage extending to the negative supply rail (ground detect). The device operates on a single supply voltage ranging from 3V to 5.5V. Key electrical parameters include an input voltage noise density of 1.7nV/√Hz at 1kHz, a typical total harmonic distortion plus noise (THD+N) of 0.00018% at 1kHz with a 2V p-p output, and a gain-bandwidth product of 61MHz. The maximum offset voltage is 630μV, and the input bias current is 3μA. It offers a typical common-mode rejection ratio (CMRR) of 100dB and power supply rejection ratio (PSRR) of 80dB. The component is housed in a 6-pin SOT-23 package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Ultra-low input voltage noise density of 1.7nV/√Hz for high-fidelity signal processing
• Extremely low total harmonic distortion plus noise (THD+N) of 0.00018% at 1kHz
• Rail-to-rail output capability with input common-mode voltage extending to ground
• Stable unity-gain operation with wide bandwidth suitable for precision applications

Instrumentation, Op Amps, Buffer Amps Applications

• High-precision LVDT displacement measurement systems
• Industrial automation sensor interfaces requiring low noise
• Medical instrumentation signal conditioning
• Audio preamplifiers demanding low distortion

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix 'FRUZ' against official Renesas documentation to confirm the exact package type and tape/reel configuration. Ensure the operating temperature range meets system requirements, as industrial grades typically span -40°C to +125°C. Confirm RoHS compliance status through the manufacturer's latest environmental declaration before integration into regulated products.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when application demands are dominated by ultra-low noise and low distortion rather than micro-power consumption. The 3μA input bias current is higher than JFET-input amplifiers but acceptable for most resistive sources. Compare against the dual-channel ISL28291 if multiple channels are needed, noting that channel count affects pinout and board space.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the ISL28191/ISL28291 family of ultra-low noise operational amplifiers designed for precision analog signal chains. The family shares core electrical characteristics including 1.7nV/√Hz noise and 61MHz bandwidth. The ISL28191 variant specifically provides a single-channel solution in compact packages like SOT-23 and UTDFN, distinguishing it from the dual-channel ISL28291.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with alternative ultra-low noise op-amps based on pinout, noise specifications, and package dimensions.