AD8605ARTZ-REEL

Overview

The AD8605ARTZ-REEL is a single-channel, precision CMOS operational amplifier manufactured by Analog Devices Inc. It features rail-to-rail input and output capabilities and operates on a single supply voltage ranging from 2.7 V to 5.5 V. The device utilizes DigiTrim® trimming technology to achieve superior precision without laser trimming. Key electrical specifications include a maximum offset voltage of 65 µV, a maximum input bias current of 1 pA, and a voltage noise density of 8 nV/√Hz at 1 kHz. It offers a unity-gain bandwidth of 10 MHz and a slew rate of 5 V/µs. The component is housed in a 5-lead SOT-23 package and is specified for operation across an extended industrial temperature range of -40°C to +125°C.

Feature Summary

• Features rail-to-rail input and output capability for maximizing dynamic range in low-voltage applications.
• Utilizes patented DigiTrim® trimming technique to achieve high precision without the need for laser trimming.
• Provides very low input bias currents and low noise characteristics suitable for high-impedance signal sources.
• Operates stably with unity gain and supports wide signal bandwidth for AC applications.

Applications

• Photodiode amplification
• Battery-powered instrumentation
• Multipole filters
• Sensors
• Audio

Procurement Notes

Verify that the specific ordering suffix ARTZ corresponds to the 5-lead SOT-23 package variant rather than other available packages such as WLCSP or MSOP. Confirm that the REEL designation indicates tape-and-reel packaging. Ensure the component meets RoHS compliance requirements if applicable to your manufacturing process. Cross-reference the datasheet revision O specifications against your design constraints to ensure compatibility with your system's power and thermal requirements.

Selection Notes

Select this component when a single-channel amplifier with rail-to-rail I/O is required alongside ultra-low input bias current and low offset voltage. It is particularly suitable for applications involving high-impedance sensors or photodiodes where leakage current must be minimized. Consider this part for battery-operated systems due to its efficient single-supply operation and low quiescent current. Verify that the 10 MHz bandwidth aligns with your signal processing needs.

Part Context

The AD8605 is part of the AD8605/AD8606/AD8608 family of precision, low-noise, CMOS, rail-to-rail input/output operational amplifiers. While the AD8605 provides a single channel, the AD8606 offers dual channels and the AD8608 provides four channels within the same performance architecture. All variants share similar electrical characteristics, including low offset voltage and wide bandwidth, allowing for consistent design scaling across different channel count requirements.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.

FAQ

Does the AD8605 exhibit output phase reversal?

No, the AD8605 does not exhibit output phase reversal even for inputs exceeding the supply voltage by more than 2 V.

What is the maximum input offset voltage specification?

The maximum input offset voltage is 65 µV for the AD8605 (except WLCSP versions) at VS = 3.5 V and VCM = 3 V.

Is the AD8605 unity gain stable?

Yes, the AD8605 is unity gain stable.