ISL28291FBZ

Instrumentation, Op Amps, Buffer Amps Overview

The ISL28291FBZ is a dual-channel, ultra-low noise voltage feedback operational amplifier manufactured by Renesas Electronics. It features a gain-bandwidth product of 1 MHz and a slew rate of 17 V/us. The input offset voltage is typically 630 uV with an input bias current of 6 uA. Operating on a single supply voltage range of 3 V to 5.5 V, it draws 7 mA of operating power per channel. The device provides a 130 mA output current capability and achieves a common-mode rejection ratio of 100 dB. Input voltage noise density is 1.7 nV/sqrt Hz, while the power supply rejection ratio is 74 dB. It is housed in a 10-pin MSOP package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Ultra-low noise performance with 1.7 nV/sqrt Hz input voltage noise density
• Rail-to-rail output swing capability extending to ground detection
• High slew rate of 17 V/us for fast signal response
• Stable unity-gain operation suitable for demanding precision applications

Instrumentation, Op Amps, Buffer Amps Applications

• Precision LVDT displacement measurement systems
• Industrial automation sensor interfaces
• High-accuracy data acquisition front ends
• Medical instrumentation signal conditioning

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix 'FBZ' against official Renesas documentation to confirm exact packaging and temperature grade specifications. Ensure compatibility with the required 10-pin MSOP footprint during PCB layout. Confirm RoHS compliance status through the manufacturer's latest datasheet before final procurement decisions.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when low noise and high speed are critical requirements within a dual-channel configuration. The 1 MHz bandwidth and 17 V/us slew rate support high-frequency signal processing. Consider the 3 V to 5.5 V supply range for single-supply designs requiring rail-to-rail output capabilities without external level shifting circuits.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the ISL28291 series of ultra-low noise operational amplifiers from Renesas. The series includes single-channel variants like the ISL28191. These devices are designed for high-performance analog signal processing where noise floor and distortion must be minimized. The family shares similar electrical characteristics but differs in channel count and available package options.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Check for direct pin-compatible alternatives within the ISL28191/ISL28291 family if channel count or package variations are acceptable. Verify that any substitute maintains the 1.7 nV/sqrt Hz noise specification and 17 V/us slew rate to ensure circuit performance parity.