AD8613AKSZ-REEL

Overview

The AD8613AKSZ-REEL is a single-channel, low-cost micropower operational amplifier manufactured by Analog Devices Inc. It features rail-to-rail input and output capabilities with a maximum supply voltage of 6 V. The device operates from a single supply of 1.8 V to 5.5 V or dual supplies of ±0.9 V to ±2.75 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. It offers a gain-bandwidth product of 350 kHz at 10 kΩ load and a voltage noise density of 25 nV/√Hz at 1 kHz.

Feature Summary

• Rail-to-rail input and output operation enables full signal swing in low-voltage single-supply systems.
• Micropower consumption with a maximum supply current of 50 μA per amplifier across the operating temperature range.
• Low noise performance with a voltage noise density of 22 nV/√Hz at 10 kHz and minimal input bias current.
• Unity gain stable design without phase reversal when inputs are driven beyond the supply rails.

Applications

• Battery-powered instrumentation
• Multipole filters
• Current shunt sense circuits
• ADC predrivers and DAC drivers
• Low power ASIC input or output amplifiers

Procurement Notes

Verify the specific package option KS-5 (5-Lead SC70) matches the target PCB footprint. Confirm that the REEL suffix indicates tape-and-reel packaging suitable for automated assembly processes. Ensure the component meets RoHS compliance requirements if mandated by the end-product regulations.

Selection Notes

Select this component for applications requiring low power consumption combined with precision DC characteristics. The rail-to-rail I/O functionality makes it suitable for buffering CMOS ADCs and DACs in portable devices. Consider the 1 pA input bias current for high-impedance sensor interfaces where leakage currents must be minimized.

Part Context

This part belongs to the AD8613/AD8617/AD8619 family of micro-power, rail-to-rail input/output operational amplifiers. While the AD8613 provides a single channel, the family includes dual (AD8617) and quad (AD8619) variants. These amplifiers utilize CMOS technology to achieve low noise and low power consumption simultaneously.

Replacement Considerations

Direct functional replacements within the same family include the AD8613AUJZ-REEL7, which utilizes the TSOT-23 package instead of SC70. Other pin-compatible options may exist but require verification of package dimensions and thermal characteristics against the original design constraints.

FAQ

Does the AD8613 exhibit phase reversal when the input voltage exceeds the supply rails?

No, the AD8613 is designed to operate without phase reversal even when the input voltage is driven beyond the positive or negative supply rails.

What is the maximum short-circuit current capability of the AD8613?

The device can withstand an indefinite output short circuit to ground with a short-circuit current rating of ±80 mA under standard test conditions.