OP497FS

Instrumentation, Op Amps, Buffer Amps Overview

The OP497FS is a quad precision operational amplifier manufactured by Analog Devices Inc., housed in a 16-lead Standard Small Outline Package (RW-16). It features a maximum offset voltage of 75 µV and drift of 1.0 µV/°C, with input bias currents up to 150 pA at 25°C and 300 pA across the -40°C to +85°C range. The device operates on supply voltages from ±2 V to ±20 V, drawing a maximum of 625 µA per amplifier. Key electrical specifications include a minimum common-mode rejection ratio of 114 dB, power supply rejection exceeding 120 dB, and a gain bandwidth product of 500 kHz.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Utilizes superbeta input stage with bias current cancellation for stable picoampere-level bias currents across wide temperature ranges.
• Provides high open-loop gain linearity and extremely low noise density for precise signal processing.
• Operates effectively with low supply voltages down to ±2 V while maintaining high common-mode and power supply rejection ratios.

Instrumentation, Op Amps, Buffer Amps Applications

• Strain gage and bridge amplifiers
• High stability thermocouple amplifiers
• Instrumentation amplifiers
• Photocurrent monitors
• Long-term integrators and filters

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific grade suffix when ordering, as the base model designation covers multiple performance grades. Confirm RoHS compliance status via the 'Z' suffix if required. Ensure the selected package option matches the intended PCB footprint, specifically the 16-lead SOIC variant for this part number. Cross-reference the datasheet revision to confirm parameter limits before finalizing procurement specifications.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select the OP497FS for applications requiring ultra-low input bias currents where FET-input amplifiers would exhibit excessive leakage at elevated temperatures. The device is suitable for high-gain linear amplification and nonlinear circuits like logarithmic or square root amplifiers. Consider the available performance grades regarding offset voltage and drift requirements relative to the system's precision needs.

Instrumentation, Op Amps, Buffer Amps Part Context

The OP497 series includes single-channel (OP97) and dual-channel (OP297) variants offering similar precision characteristics. The OP497FS specifically denotes the quad configuration in the 16-lead SOIC package. This component belongs to a family designed for high-accuracy analog signal conditioning, distinguishing itself through the combination of low power consumption and exceptional DC precision parameters.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct functional substitutes within the same package are not explicitly listed in the provided documentation. Verify pin compatibility and electrical specifications against other quad precision amplifiers if cross-referencing is necessary.

Instrumentation, Op Amps, Buffer Amps FAQ

How does the OP497 maintain low bias currents compared to FET-input op amps?

It uses a superbeta input stage with bias current cancellation, preventing the exponential increase in bias current typically seen in FET inputs as temperature rises.

What is the input common-mode voltage range?

The input common-mode voltage range extends to within approximately 1 V of either supply rail under typical operating conditions.