AD8617ARZ-REEL

Overview

The AD8617ARZ-REEL is a dual-channel, low-cost, micropower CMOS operational amplifier featuring rail-to-rail input and output capabilities. It operates from a single supply of 1.8 V to 5.5 V or dual supplies of ±0.9 V to ±2.5 V. Key electrical specifications include a maximum offset voltage of 2.2 mV, a maximum input bias current of 1 pA, and a typical supply current of 38 μA per amplifier. The device exhibits a gain-bandwidth product of 400 kHz, a slew rate of 0.1 V/μs, and a voltage noise density of 22 nV/√Hz at 10 kHz. It is housed in an 8-lead SOIC package.

Feature Summary

• Rail-to-rail input and output operation enables full signal swing capability within the supply voltage range.
• Micropower consumption with a maximum supply current of 50 μA per amplifier across the temperature range.
• Low noise performance characterized by a voltage noise density of 22 nV/√Hz and peak-to-peak noise of 3.5 μV in the 0.1 Hz to 10 Hz band.
• Unity gain stable design with no phase reversal when inputs are driven beyond the supply rails.

Applications

• Battery-powered instrumentation
• Multipole filters
• Current shunt sense circuits
• ADC predrivers
• DAC drivers and level shifters

Procurement Notes

Verify that the specific part number matches the required package type and reel configuration. Confirm RoHS compliance status as indicated by the suffix. Ensure the operating temperature range aligns with system requirements. Cross-reference the datasheet revision for any specification updates before finalizing the design.

Selection Notes

Select this component for applications requiring low power consumption combined with precision DC characteristics. The rail-to-rail I/O feature makes it suitable for buffering ADCs and DACs in single-supply systems. Consider the low input bias current for high-impedance sensor interfaces. Evaluate the trade-off between the low slew rate and the micropower requirement for dynamic signal processing.

Part Context

This device belongs to the AD8613/AD8617/AD8619 family of micro-power, rail-to-rail input/output amplifiers. The AD8617 specifically denotes the dual-channel version of the series. Other members include the single-channel AD8613 and the quad-channel AD8619. All share similar electrical characteristics but differ in channel count and package options.

Replacement Considerations

Direct functional substitutes within the same family include the AD8613 (single channel) and AD8619 (quad channel). Automotive qualified versions are available as AD8617W. Verify pinout compatibility and thermal resistance differences if switching between package types such as MSOP, LFCSP, or SOIC.

FAQ

Does the AD8617 exhibit phase reversal when the input voltage exceeds the supply rails?

No, the AD8617 is designed with no phase reversal, allowing it to recover correctly even when the input is driven beyond the supply rails.

What is the maximum supply voltage rating for the AD8617?

The absolute maximum supply voltage rating is 6 V. The recommended operating range is up to 5.5 V.

Is the AD8617 unity gain stable?

Yes, the AD8617 is unity gain stable with a phase margin of approximately 70 degrees under standard loading conditions.