AD8607ARZ

Overview

The AD8607ARZ is a dual-channel, precision micro-power operational amplifier manufactured by Analog Devices. It features rail-to-rail input and output capabilities with a maximum offset voltage of 50 µV and low input bias current of 1 pA. The device operates on single supplies from 1.8 V to 5 V or dual supplies from ±0.9 V to ±2.5 V. Key electrical specifications include a gain bandwidth product of 400 kHz, supply current of 40 µA per amplifier, and voltage noise density of 22 nV/√Hz. It is housed in an 8-lead SOIC package.

Feature Summary

• Patented trimming technique achieves superior precision without laser adjustment
• Rail-to-rail input and output swing capability for wide dynamic range
• No phase reversal even when input exceeds common-mode voltage limits
• Unity gain stable design suitable for direct buffering applications

Applications

• Battery-powered instrumentation systems
• Multipole filter circuits
• Capacitive and inductive sensor interfaces
• Low power ASIC input or output amplifiers
• Photodiode transimpedance amplification

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct packaging options such as tube or reel quantities. Confirm RoHS compliance status indicated by the Z suffix. Cross-reference the package type and temperature range with the latest datasheet revision to avoid discrepancies in component sourcing.

Selection Notes

Select this component for designs requiring high precision in low-power environments. The dual-channel configuration reduces board space compared to single-channel alternatives. Ensure the application benefits from rail-to-rail performance and low noise characteristics. Verify that the 400 kHz bandwidth meets the signal processing requirements.

Part Context

This part belongs to the AD8603/AD8607/AD8609 family of precision micro-power CMOS operational amplifiers. The AD8607 specifically provides two channels within this series. It shares core technologies like patented trimming and low noise architecture with the single-channel AD8603 and quad-channel AD8609 variants.

Replacement Considerations

Official substitutes within the same family include the AD8603 for single-channel needs and the AD8609 for quad-channel requirements. These parts share identical electrical characteristics and trimming technology but differ in channel count and package pinout configurations.

FAQ

Does the AD8607 exhibit phase reversal if the input voltage exceeds the common-mode range?

No, the AD8607 does not exhibit phase reversal even when the input voltage exceeds the maximum input common-mode voltage, handling voltages up to 1 V over the supply.

What is the maximum input bias current specification for this device?

The maximum input bias current is specified as 1 pA at 25°C, increasing to 500 pA across the full operating temperature range of -40°C to +125°C.