AD8627AKS-REEL7

Overview

The AD8627AKS-REEL7 is a precision, low-power, single-supply JFET input amplifier manufactured by Analog Devices Inc. It features true single-supply operation from 5 V to 26 V and dual-supply operation from ±2.5 V to ±13 V. The device offers rail-to-rail output capability and maintains stability with capacitive loads exceeding 500 pF. Key electrical specifications include a maximum offset voltage of 500 µV at 5 V supply, a maximum input bias current of 1 pA, and a typical supply current of 630 µA per amplifier. It provides a gain bandwidth product of 5 MHz and a slew rate of 5 V/µs.

Feature Summary

• Features true single-supply operation with rail-to-rail output swing for maximum dynamic range in low-voltage systems.
• Utilizes n-channel JFET input stage to achieve very low input bias current and high input impedance.
• Maintains unity gain stability and exhibits no phase reversal when input signals approach the positive supply rail.
• Designed for stable performance with capacitive loads exceeding 500 pF without oscillation.

Applications

• Photodiode transimpedance amplifiers
• ATE reference level drivers
• Battery management systems
• Remote sensor signal conditioning including automotive sensors

Procurement Notes

Verify that the ordering suffix KS corresponds to the 5-lead SC70 package configuration as specified in the datasheet. Confirm the REEL7 designation indicates tape and reel packaging. Ensure the component meets the industrial temperature range requirements of -40°C to +85°C for your specific application environment before finalizing procurement.

Selection Notes

Select this component for applications requiring low power consumption combined with high input impedance. The 5 MHz bandwidth and 5 V/µs slew rate support precision filtering and fast signal processing. Consider the 5-lead SC70 package for space-constrained designs where surface-mount assembly is preferred over through-hole technology.

Part Context

The AD8627 is part of the AD862x family of precision JFET amplifiers, which also includes the AD8625 and AD8626. While the AD8625 and AD8626 are available in multi-channel configurations such as TSSOP and MSOP packages, the AD8627 is specifically offered as a single-channel amplifier in both 5-lead SC70 and 8-lead SOIC packages.

Replacement Considerations

The AD8627ARZ is an alternative version of the same amplifier function housed in an 8-lead SOIC package rather than the 5-lead SC70 package found in the AKS variant.

FAQ

Does the AD8627 experience phase reversal near the positive supply rail?

No, the AD8627 does not experience phase reversal with input signals close to the positive rail, unlike some other single-supply amplifiers.

What is the input common-mode voltage range relative to the supply rails?

The input common-mode voltage extends from 0.2 V below the negative rail (–VS) to 2 V below the positive rail (+VS).