AD8698ARM-REEL

Overview

The AD8698ARM-REEL is a dual precision operational amplifier featuring rail-to-rail output, low noise, and low input bias current. It offers a maximum offset voltage of 100 µV with drift below 2 µV/°C. The device operates within a supply voltage range of ±2.5 V to ±15 V and supports an operating temperature from −40°C to +85°C. Key electrical parameters include a gain bandwidth product of 1 MHz, a slew rate of 0.4 V/µs, and a minimum common-mode rejection ratio of 118 dB.

Feature Summary

• Rail-to-rail output capability maximizes dynamic range in various applications.
• Low input bias current minimizes offset errors when interfacing with high impedance sensors.
• Internal protective circuitry allows input voltages to exceed the supply rails without phase reversal.

Applications

• Photodiode amplifiers
• Sensors and controls
• Multipole filters
• Integrators

Procurement Notes

Verify the specific package type against project requirements, as the AD8698 series includes both MSOP and SOIC options. Confirm that the REEL suffix corresponds to tape and reel packaging for automated assembly processes. Ensure compatibility with the required operating temperature range and supply voltage specifications before finalizing procurement.

Selection Notes

Select this component for designs requiring high precision and low noise in single or dual supply configurations. The rail-to-rail output is suitable for driving ADCs or DACs directly. Consider the 1 MHz bandwidth for filter designs up to 100 kHz in unity gain. Paralleling amplifiers can further reduce noise density if necessary.

Part Context

This part belongs to the AD8698 family of dual precision operational amplifiers manufactured by Analog Devices. The family includes variants with different packaging options such as MSOP and SOIC. The REEL suffix indicates the specific tape and reel packaging configuration for surface mount technology.

Replacement Considerations

Direct substitutes are not explicitly listed in the provided documentation. Designers should evaluate other dual precision op-amps with similar rail-to-rail output and low offset voltage characteristics if pin-compatible alternatives are required.

FAQ

Does the AD8698 experience phase reversal during input overvoltage?

No, the AD8698 features internal protective circuitry that prevents phase reversal even when input voltages exceed the supply rails.

What is the recommended approach for driving heavy capacitive loads?

The AD8698 is stable driving capacitive loads well over 10 nF. For loads exceeding 50 nF, using an external RC snubber network is recommended to minimize overshoot.