OP297FSZ-REEL

Instrumentation, Op Amps, Buffer Amps Overview

The OP297FSZ-REEL is a dual precision operational amplifier from Analog Devices, packaged in an industry-standard 8-lead SOIC. It features a super-beta input stage with bias current cancellation to maintain extremely low input bias currents across wide temperature ranges. Key electrical specifications include a maximum input offset voltage of 50 μV and a maximum drift of 0.6 μV/°C at 25°C. The device operates on supply voltages ranging from ±2 V to ±20 V with a maximum supply current of 625 μA per amplifier. It provides a minimum open-loop gain of 2000 V/mV and a common-mode rejection ratio exceeding 120 dB.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Combines high precision performance with low power consumption and extremely low input bias current within a space-saving package.
• Utilizes a super-beta input stage with bias current cancellation to maintain picoamp-level bias currents across all temperatures.
• Features very high open-loop gain ensuring high linearity and eliminates errors from common-mode signals through high common-mode rejection.

Instrumentation, Op Amps, Buffer Amps Applications

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

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific grade suffix (E, F, or G) required for your application's offset voltage and drift tolerances before ordering. Confirm that the REEL packaging format aligns with your automated assembly equipment capabilities. Ensure the operating environment stays within the specified -40°C to +85°C range to maintain guaranteed performance parameters. Check for RoHS compliance status if environmental regulations apply to your manufacturing process.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when applications demand ultra-low input bias currents without the temperature instability associated with FET-input amplifiers. It is suitable for single-supply operation down to ±2 V, making it ideal for battery-powered systems. Consider the OP297 over the OP97 if dual channels are needed, or the OP497 if four channels are required within the same precision family.

Instrumentation, Op Amps, Buffer Amps Part Context

The OP297 series represents the first dual operational amplifier to integrate precision performance into the compact 8-lead SOIC package. It serves as the dual-channel counterpart to the single-channel OP97 and complements the quad-channel OP497. This family is designed for applications requiring high accuracy and stability in small form factors.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct pin-compatible replacements within the same manufacturer family include the OP297FS-REEL and OP297GS-REEL. Verify that the substitute part number matches the required temperature grade and electrical tolerance specifications for your specific circuit design.

Instrumentation, Op Amps, Buffer Amps FAQ

How does the OP297 handle input bias current compared to FET-input op amps?

Unlike FET-input op amps whose bias currents double for every 10°C rise in temperature, the OP297 uses bias current cancellation to maintain picoamp bias currents at all temperatures.

What is the minimum supply voltage for the OP297?

The OP297 can operate with supply voltages as low as ±2 V.