AD8607ARM-R2

Overview

The AD8607ARM-R2 is a dual-channel precision micro-power operational amplifier from Analog Devices, featuring rail-to-rail input and output capabilities. It operates on a single supply of 1.8 V to 5 V or dual supplies of ±0.9 V to ±2.5 V. Key electrical characteristics include a maximum offset voltage of 50 µV, a maximum input bias current of 1 pA, and a typical supply current of 40 µA per amplifier. The device offers a gain bandwidth product of 400 kHz and low noise density of 22 nV/√Hz at 10 kHz.

Feature Summary

• Patented trimming technique achieves superior precision without laser adjustment
• Rail-to-rail input and output swing maximizes dynamic range in low voltage systems
• No phase reversal ensures stability even when input exceeds common-mode limits
• Unity gain stable with low distortion for high fidelity signal processing

Applications

• Battery-powered instrumentation and portable electronics
• Multipole filters requiring low power consumption
• Capacitive and inductive proximity sensors
• Low power ASIC input or output buffering
• Photodiode transimpedance amplifiers

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and reel quantity. Ensure compatibility with RoHS standards if required by the design specification. Cross-reference the part number with the latest datasheet revision to confirm electrical parameters have not changed.

Selection Notes

Select this component for applications requiring low quiescent current and high precision in single-supply environments. The dual-channel configuration reduces board space compared to single-channel alternatives. Consider the 8-lead MSOP package for compact designs while ensuring adequate thermal management within the specified operating temperature range.

Part Context

This device belongs to the AD8603/AD8607/AD8609 family of precision CMOS amplifiers. The AD8607 specifically provides two channels, distinguishing it from the single-channel AD8603 and the quad-channel AD8609. All members share identical core electrical specifications and trimming technologies, differing only in channel count and available package options.

Replacement Considerations

Official substitutes within the same family include the AD8603 for single-channel needs and the AD8609 for four-channel requirements. Verify that any replacement maintains the same 8-lead MSOP package footprint and electrical performance metrics to ensure direct interchangeability in existing circuit designs.

FAQ

Does the AD8607 exhibit phase reversal when 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 amplifier?

The maximum input bias current is 1 pA at 25°C, increasing to 50 pA between -40°C and +85°C, and 500 pA between -40°C and +125°C.

Can the AD8607 drive large capacitive loads directly?

Yes, the device is capable of driving large capacitive loads without oscillating. For unity gain configurations, a snubber network is recommended to eliminate ringing and overshoot when driving loads around 2 nF.