AD8601WARTZ-R7

Overview

The AD8601WARTZ-R7 is a single-channel, precision CMOS operational amplifier manufactured by Analog Devices Inc. It features rail-to-rail input and output capabilities with a gain bandwidth product of 8.4 MHz and a slew rate of 5 V/µs to 6 V/µs. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V, drawing a typical supply current of 750 µA per amplifier. Key electrical characteristics include a maximum offset voltage of 500 µV (A Grade) and an input bias current as low as 0.2 pA. It is qualified for automotive applications under AEC-Q100 standards and housed in a 5-lead SOT-23 package.

Feature Summary

• Utilizes patented DigiTrim technology for post-package trimming to achieve superior DC precision without laser trimming.
• Features true rail-to-rail input and output architecture allowing operation across the full supply voltage range.
• Designed for single-supply operation with very low input bias currents suitable for high impedance sources.

Applications

• Current sensing
• Barcode scanners
• Battery-powered instrumentation
• Multipole filters
• Audio amplification

Procurement Notes

Verify the specific grade (A or D) required for your application, as offset voltage specifications vary significantly between grades. Confirm that the SOT-23-5 package meets your board layout constraints. Ensure the operating temperature range of -40°C to +125°C aligns with your system requirements. Check for any recent production changes or obsolescence notices from Analog Devices before finalizing procurement plans.

Selection Notes

Select this component when high precision and wide bandwidth are needed in a compact surface-mount package. The rail-to-rail I/O makes it suitable for buffering ADCs/DACs in single-supply systems. Consider the A Grade for stricter offset voltage limits or the D Grade for cost-sensitive applications with relaxed DC precision. Evaluate the low supply current benefit for battery-operated designs.

Part Context

The AD8601 is part of the AD860x family, which includes dual (AD8602) and quad (AD8604) variants. This family shares common architectural features such as the DigiTrim process and rail-to-rail performance. The WARTZ suffix indicates the automotive-grade qualification and the specific SOT-23-5 packaging configuration used for space-constrained designs.

Replacement Considerations

Direct pin-compatible replacements within the same family include AD8601ARTZ-RL and AD8601ARTZ-R7. For automotive-specific needs, verify if other AEC-Q100 qualified parts from the manufacturer meet the exact electrical parameter requirements.

FAQ

Does the AD8601 exhibit phase reversal?

No, the AD8601 is designed to have no phase reversal when the input common-mode voltage exceeds the supply rails.

What is the input overvoltage protection capability?

The inputs can withstand voltages up to the supply rails. If the input voltage exceeds the supply, internal PN junctions conduct; a series resistor should be used to limit this current to 5 mA or less to prevent damage.