AD8625ARUZ

Overview

The AD8625ARUZ is a quad precision JFET input operational amplifier from Analog Devices. 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 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, a maximum input bias current of 1 pA, and a typical supply current of 630 μA per amplifier. It operates within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Features true single-supply operation and low power consumption suitable for battery-powered systems.
• Provides rail-to-rail output swing to maximize dynamic range in signal processing applications.
• Maintains output stability with capacitive loads greater than 500 pF without oscillation.
• Utilizes n-channel JFET input stage to achieve very low input bias current and high input impedance.

Applications

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

Procurement Notes

Verify the specific package suffix RU corresponds to the 14-lead TSSOP configuration required for your design. Confirm that the ordering code matches the exact channel count and performance grade needed. Ensure environmental compliance requirements align with the manufacturer's specifications for the selected variant before finalizing procurement orders.

Selection Notes

Select this component when low input bias current and precision are critical for maintaining signal integrity in high-impedance circuits. The rail-to-rail output allows for maximum voltage utilization in single-supply environments. Consider the 5 MHz bandwidth and slew rate for applications requiring moderate speed alongside high DC accuracy.

Part Context

This part belongs to the AD862x family of precision low-power single-supply JFET amplifiers. The family includes the AD8625 (quad), AD8626 (dual), and AD8627 (single) variants. These devices share common electrical characteristics such as low offset voltage and picoampere-level input currents, designed for industrial temperature ranges.

Replacement Considerations

Direct pin-compatible replacements within the same family include the AD8626ARUZ (dual channel) and AD8627ARUZ (single channel). Verify that any substitute meets the specific 14-lead TSSOP package dimensions and thermal characteristics required by the existing PCB layout.

FAQ

Does the AD8625 experience phase reversal when input signals approach 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.