AD8613AKSZ-R2

Overview

The AD8613AKSZ-R2 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 offset voltage of 2.2 mV and a maximum input bias current of 1 pA. The device operates on a single supply from 1.8 V to 5.5 V or dual supplies up to ±2.75 V. It consumes a maximum of 50 μA per amplifier over the temperature range and exhibits a voltage noise density of 22 nV/√Hz at 10 kHz. The part is housed in a 5-lead SC70 package (KS-5) and is specified for operation between -40°C and +125°C.

Feature Summary

• Rail-to-rail input and output capability enables buffering of CMOS ADCs and DACs in low-power systems.
• Micropower consumption with very low input bias currents suitable for portable and loop-powered instrumentation.
• Low noise performance with minimal phase reversal during overload conditions.
• Unity gain stable design compatible with various load capacitances.

Applications

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

Procurement Notes

Verify that the ordering suffix matches the specific reel configuration required for the production line. Confirm the package option corresponds to the 5-Lead SC70 footprint. Ensure the component branding aligns with the manufacturer's specifications for the AD8613 series. Check RoHS compliance status if restricted substances are a constraint for the final assembly process.

Selection Notes

Select this component when designing low-voltage single-supply systems requiring high input impedance and minimal power draw. The rail-to-rail functionality makes it suitable for interfacing with digital-to-analog converters. Consider the thermal resistance characteristics of the SC70 package for heat dissipation requirements in dense layouts.

Part Context

This model belongs to the AD8613/AD8617/AD8619 family of micropower, rail-to-rail input/output amplifiers. While the AD8613 provides a single channel, the family includes dual (AD8617) and quad (AD8619) variants. These devices share similar electrical characteristics but differ in channel count and available package options such as MSOP, SOIC, and LFCSP.

Replacement Considerations

Direct substitutes within the same family include the AD8613AUJZ-R2, which utilizes a 5-Lead TSOT-23 package instead of the SC70 form factor. Other pin-compatible alternatives may exist among other micropower op-amps, but verification of offset voltage and bias current specifications is necessary.

FAQ

Does the AD8613AKSZ-R2 experience phase reversal during input overload?

No, the device is designed to prevent phase reversal even when the input signal exceeds the common-mode voltage range.

What is the maximum operating supply voltage for this amplifier?

The absolute maximum supply voltage rating is 6 V, though typical operation is specified up to 5.5 V.