ISL28270IAZ

Instrumentation, Op Amps, Buffer Amps Overview

The ISL28270IAZ is a dual-channel micropower instrumentation amplifier in a 16-lead QSOP package. It operates on a single supply from +2.4V to +5.5V with rail-to-rail input and output capabilities. Key electrical specifications include a maximum input offset voltage of 150µV, a typical common-mode rejection ratio (CMRR) of 110dB, and a -3dB bandwidth of 240kHz at a gain of 100. The device features an internal Input Range Enhancement Circuit (IREC), enabling full rail-to-rail input operation. Supply current is approximately 120µA per channel.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Features an Input Range Enhancement Circuit (IREC) that maintains high CMRR performance for input voltages extending to the positive supply rail and down to 50mV above the negative rail.
• Provides rail-to-rail input and output amplification, allowing signal swing within millivolts of the supply rails without requiring biasing.
• Includes independent feedback terminals (FB+ and FB-) that allow individual gain setting and output zero-level adjustment while preserving high CMRR regardless of resistor tolerance.
• Utilizes bipolar input devices with Input Bias Cancellation/Compensation circuits to achieve low input bias current and excellent 1/f noise performance.

Instrumentation, Op Amps, Buffer Amps Applications

• Battery or solar-powered systems
• Strain gauge signal conditioning
• Medical devices
• Industrial instrumentations

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify component authenticity through authorized distributors as the part status is listed as Not Recommended for New Designs. Confirm RoHS compliance and Pb-free packaging specifications against the latest datasheet revision FN6260 Rev 6.00. Ensure proper handling for ESD-sensitive inputs during assembly.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component for applications requiring high precision with minimal power consumption. The ISL28270 is internally compensated for a minimum gain of 100, making it suitable for higher gain scenarios compared to the ISL28273. Consider the 16-lead QSOP package constraints and thermal resistance characteristics for PCB layout planning.

Instrumentation, Op Amps, Buffer Amps Part Context

The ISL28270 belongs to the ISL28x7x family of micropower instrumentation amplifiers manufactured by Renesas Electronics Corporation. This series includes dual-channel variants like the ISL28270 and ISL28273, as well as quad-channel versions such as the ISL28470. All share similar core technologies including IREC and RRIO capabilities.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. The datasheet explicitly states the device is Not Recommended for New Designs.