LT1679IS#TRPBF

Instrumentation, Op Amps, Buffer Amps Overview

The LT1679IS#TRPBF is a quad precision operational amplifier featuring rail-to-rail input and output capabilities. It operates on single supplies from 2.7V to 36V or dual supplies up to ±18V. Key electrical specifications include a maximum offset voltage of 100µV, a gain bandwidth product of 20MHz, and a typical low noise density of 3.9nV/√Hz at 1kHz. The device ensures no phase inversion even when inputs exceed the supply rails by 100mV. It is housed in a 14-lead SO package and functions within an operating temperature range of –40°C to 85°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Rail-to-rail input and output operation with no phase inversion
• High precision with low offset voltage and high common mode rejection
• Low wideband noise performance suitable for sensitive signal processing

Instrumentation, Op Amps, Buffer Amps Applications

• Strain gauge amplifiers
• Portable microphones
• Battery-powered rail-to-rail instrumentation
• Infrared detectors

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the IS suffix indicates the extended industrial temperature range (-40°C to 85°C) compared to the CS variant. Confirm the TRPBF suffix denotes tape and reel packaging with lead-free compliance. Ensure the datasheet version matches the specific lot requirements for your design validation.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component for applications requiring both high DC accuracy and low AC noise in single-supply environments. The quad configuration allows for matching-dependent designs like instrumentation amplifiers. Consider source resistance limits to avoid current noise dominance in high-impedance circuits.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the LT1678/LT1679 family of low noise, rail-to-rail precision op amps. The LT1679 specifically provides four amplifiers in a single package, whereas the LT1678 offers two. Both share identical electrical characteristics and are designed for precision analog signal conditioning tasks.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

LT1678CS#TRPBF (Dual channel variant)

Instrumentation, Op Amps, Buffer Amps FAQ

Does the LT1679 experience phase inversion when the input voltage exceeds the positive supply rail?

No, the LT1679 is designed to eliminate phase inversion. The input range can exceed the power supply by 100mV without causing phase reversal.

What is the maximum input bias current specified for this device?

The maximum input bias current is 20nA over the full operating temperature range.