AD8605ARTZ-R2

Overview

The AD8605ARTZ-R2 is a single-channel, precision, low-noise CMOS operational amplifier featuring rail-to-rail input and output capabilities. It operates on a single supply voltage ranging from 2.7 V to 5.5 V. Key electrical specifications include a maximum offset voltage of 65 µV, a maximum input bias current of 1 pA, and a typical voltage noise density of 8 nV/√Hz at 1 kHz. The device offers a unity-gain bandwidth of 10 MHz and a slew rate of 5 V/µs. It is specified for operation over an extended industrial temperature range of −40°C to +125°C.

Feature Summary

• Utilizes patented DigiTrim® trimming technology to achieve superior precision without laser trimming.
• Features very low offset voltage and extremely low input bias currents for high accuracy.
• Provides rail-to-rail input and output swing for maximum dynamic range in single-supply applications.
• Operates stably with unity gain and exhibits no phase reversal even when inputs exceed the supply rails.

Applications

• Photodiode amplification
• Battery-powered instrumentation
• Multipole filters
• High impedance sensors
• Audio signal processing

Procurement Notes

Verify that the ordering suffix matches the required package type, as the AD8605 family includes SOT-23 and WLCSP options. Confirm the specific revision level against the manufacturer's datasheet to ensure compatibility with design requirements. Check for any environmental compliance markings or RoHS status if mandated by the project specifications.

Selection Notes

Select this component for applications requiring high DC precision combined with wide signal bandwidth. The low input bias current makes it suitable for high-impedance sensor interfaces. Ensure the power supply voltage remains within the 2.7 V to 5.5 V range. Consider the thermal resistance characteristics if operating near the upper temperature limits.

Part Context

This part belongs to the AD860x family of precision amplifiers, which also includes dual (AD8606) and quad (AD8608) variants. The family shares common performance characteristics such as low noise and high open-loop gain. The ARTZ-R2 designation specifically indicates the single-channel version in a 5-lead SOT-23 package supplied in tape-and-reel format.

Replacement Considerations

Direct substitutes within the same family include AD8606ARTZ-R2 and AD8608ARTZ-R2, though these offer different channel counts. Other packages like WLCSP are available under different suffixes (e.g., ACBZ). Verify pinout compatibility and thermal dissipation requirements when considering alternative packages.