LT1679IS#PBF

Instrumentation, Op Amps, Buffer Amps Overview

The LT1679IS#PBF 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 high accuracy with a minimum common mode rejection ratio of 100dB and power supply rejection ratio of 106dB. It is housed in a 14-lead SOIC package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Rail-to-rail input and output operation allows signal handling near supply rails without phase inversion.
• Precision characteristics include low offset voltage and high common mode rejection for accurate signal processing.
• Low wideband noise performance combined with a low 1/f corner frequency enhances signal integrity.
• Matching specifications between amplifiers facilitate use in differential and instrumentation applications.

Instrumentation, Op Amps, Buffer Amps Applications

• Strain gauge amplifiers
• Portable microphones
• Battery-powered rail-to-rail instrumentation
• Low noise signal processing
• Microvolt accuracy threshold detection

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific IS suffix indicates guaranteed performance over the full –40°C to 85°C operating temperature range. Confirm the 14-lead SOIC package matches the design footprint. Ensure the datasheet version aligns with current manufacturing specifications. Check for any recent production changes or material declarations relevant to the component.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when both precision and low noise are required in a single-supply environment. The rail-to-rail input range exceeding the positive supply by 100mV prevents lock-up in servo systems. Consider the 20MHz gain bandwidth for moderate speed applications requiring high DC accuracy and low distortion.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the LT1678/LT1679 family of dual and quad op amps. The LT1679 specifically provides four amplifiers in one package, whereas the LT1678 offers two. Both share identical electrical characteristics, allowing designers to mix and match based on channel requirements while maintaining consistent performance parameters across the system.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Public confirmed substitute part numbers: None identified in source documentation.