AD8698ARZ-REEL

Overview

The AD8698ARZ-REEL is a dual precision operational amplifier featuring rail-to-rail output capability. It offers a maximum offset voltage of 100 µV and drift below 2 µV/°C, eliminating the need for manual trimming. The device operates within a supply voltage range of ±2.5 V to ±15 V. Key electrical parameters include a gain bandwidth product of 1 MHz, a slew rate of 0.4 V/µs, and an input bias current of 700 pA maximum. It provides high common-mode rejection (118 dB min) and low noise characteristics.

Feature Summary

• Rail-to-rail output maximizes dynamic range in various applications
• High precision with low offset voltage and drift over temperature
• Low input bias current suitable for high impedance sensors
• Internal protective circuitry allows input voltages to exceed supply rails

Applications

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

Procurement Notes

Verify that the specific ordering suffix matches the required package type, as the datasheet indicates MSOP versions are available in tape and reel only. Confirm the component meets the specified operating temperature range of −40°C to +85°C. Ensure proper ESD precautions are observed during handling due to the sensitivity of the device to electrostatic discharge.

Selection Notes

Select this component when high DC accuracy and low noise are required without the complexity of laser trimming. It is suitable for applications driving capacitive loads directly, though external compensation may be needed for loads exceeding 50 nF. Consider the 1 MHz bandwidth limit when designing active filters or high-speed signal conditioning circuits.

Part Context

The AD8698 is part of Analog Devices' portfolio of high-precision, low-noise operational amplifiers. It is designed to provide superior performance in signal conditioning tasks where maintaining signal integrity across a wide temperature range is critical. The dual configuration allows for cost-effective implementation of complex analog front-end circuits.

Replacement Considerations

Consult the manufacturer's documentation for qualified substitute part numbers. Verify pin compatibility and electrical specifications before replacing the original component in existing designs.

FAQ

Can the AD8698 drive heavy capacitive loads?

Yes, the AD8698 is stable even when driving heavy capacitive loads. However, if the load exceeds 50 nF, it is recommended to use an external snubber network to reduce overshoot.

What is the input voltage range relative to the supply?

The inputs can withstand voltages up to the supply rails. Internal protection allows voltages at either input to exceed the supply voltage, but series resistors are recommended if the input exceeds the supply by more than 2 V.