ADA4625-1ARDZ-RL

Overview

The ADA4625-1ARDZ-RL is a single-channel, precision JFET input operational amplifier manufactured by Analog Devices. It features an 18 MHz gain bandwidth product and a 48 V/µs slew rate. The device operates on dual supplies from ±2.5 V to ±18 V or single supplies from 5 V to 36 V. Key electrical characteristics include a low voltage noise density of 3.3 nV/√Hz at 1 kHz, an input bias current of ±15 pA, and a maximum offset voltage of ±80 µV. It provides rail-to-rail output capability and is housed in an 8-lead SOIC package with an exposed pad.

Feature Summary

• JFET input architecture providing high impedance and low bias current
• Rail-to-rail output stage for maximizing dynamic range
• Unity-gain stable design without phase reversal upon overload
• High capacitive load drive capability

Applications

• PLL filter amplifiers
• Transimpedance amplifiers
• Photodiode sensor interfaces
• Low noise charge amplifiers

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging format. Confirm that the exposed pad connection requirements are met within the target PCB layout. Ensure supply voltages remain within the specified absolute maximum ratings to prevent permanent damage. Check for any recent revision updates to the datasheet before finalizing component selection.

Selection Notes

Select this component when high speed and low noise are required in single-supply applications. The wide input common-mode range including the negative supply simplifies ground sensing circuits. Consider the exposed pad thermal management requirements during PCB design. Verify that the operating temperature range meets the environmental specifications of the end application.

Part Context

This part belongs to the ADA4625 family of high-voltage, single-supply, rail-to-rail output precision amplifiers. It builds upon Analog Devices' industry-leading JFET input op amps, offering improved speed and lower noise levels compared to previous generations. The device is designed for optimal performance in high-gain and low-noise environments.

Replacement Considerations

ADA4625-1ARZ

FAQ

Does the ADA4625-1 exhibit phase reversal when the input exceeds the supply rails?

No, the device is designed to have no phase reversal when the input range exceeds either supply rail by 200 mV.

What is the maximum capacitive load the output can drive?

The output is capable of driving loads up to 1000 pF and/or 600 Ω loads simultaneously.