AD8625AR-REEL

Overview

The AD8625AR-REEL is a quad precision JFET input operational amplifier manufactured by Analog Devices Inc. It features true single-supply operation with a voltage range of 5 V to 26 V, or dual supply operation from ±2.5 V to ±13 V. The device provides rail-to-rail output capability and maintains low power consumption with a typical supply current of 630 μA per amplifier. Key electrical specifications include a maximum offset voltage of 500 μV, a gain bandwidth product of 5 MHz, and a slew rate of 5 V/μs. The input bias current is guaranteed at a maximum of 1 pA. The component operates within an industrial temperature range of −40°C to +85°C and is housed in a 14-lead TSSOP package.

Feature Summary

• Features true single-supply operation and rail-to-rail output swing for maximum dynamic range.
• Utilizes n-channel JFET input stage to achieve very low input bias current and high input impedance.
• Designed for unity gain stability without phase reversal when input signals approach the positive rail.
• Maintains output stability with capacitive loads exceeding 500 pF.

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and reel configuration. Confirm RoHS compliance status as it varies by revision and region. Ensure the procurement channel sources components directly from authorized distributors to guarantee authenticity and traceability. Check for any lead-free manufacturing updates that may affect soldering profiles.

Selection Notes

Select this component for applications requiring low input bias current and precision DC performance in single-supply environments. The rail-to-rail output allows for full utilization of the supply voltage range. Consider the 5 MHz bandwidth and 5 V/μs slew rate for signal processing requirements. Verify thermal dissipation capabilities if operating near maximum load conditions.

Part Context

The AD8625 is part of the AD862x family, which includes the AD8626 (dual) and AD8627 (single). This family shares common electrical characteristics such as JFET input technology, low power consumption, and rail-to-rail output performance. The AD8625 specifically integrates four independent amplifiers into a single 14-lead package, optimizing board space for multi-channel signal processing tasks.

Replacement Considerations

Direct functional substitutes within the same family include the AD8626 and AD8627, though channel counts differ. Cross-family replacements require matching JFET input architecture, rail-to-rail output capability, and supply voltage ranges. Verify pin compatibility and package dimensions before substitution.

FAQ

Does the AD8625 experience phase reversal when inputs are close to the positive rail?

No, the AD8625 does not experience phase reversal with input signals close to the positive rail.

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 to 2 V below the positive rail.

How does junction temperature affect the input bias current?

The input bias current doubles for every 10°C rise in junction temperature.