ADA4625-2ARDZ-R7

Overview

The ADA4625-2ARDZ-R7 is a dual-channel, precision JFET input operational amplifier manufactured by Analog Devices Inc. It features an 8-lead SOIC package with an exposed pad and operates from single supplies of 5 V to 36 V or dual supplies of ±2.5 V to ±18 V. The device provides a typical gain bandwidth product of 18 MHz and a slew rate of 48 V/µs. It offers rail-to-rail output capability, low voltage noise density of 3.3 nV/√Hz at 1 kHz, and low input bias current of ±15 pA. The amplifier is unity-gain stable and designed for extended industrial temperature operation from −40°C to +125°C.

Feature Summary

• Dual-channel architecture with JFET inputs providing high impedance and low bias current
• Rail-to-rail output stage capable of driving capacitive loads up to 1000 pF
• High-speed performance with wide gain bandwidth and fast settling times
• Low noise characteristics suitable for precision signal conditioning

Applications

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

Procurement Notes

Verify the specific suffix R7 indicates tape and reel packaging when sourcing components. Confirm that the dual-channel configuration matches system requirements compared to single-channel variants. Ensure PCB layout accommodates the exposed pad for thermal management and electrical connection as specified in the datasheet outline dimensions.

Selection Notes

Select this component for applications requiring dual channels with high speed and low noise. Consider the rail-to-rail output for maximizing dynamic range in single-supply systems. Evaluate the input common-mode range which includes the negative supply rail. Verify that the operating voltage range aligns with the available power supply rails in the target design.

Part Context

This part belongs to the ADA4625 family of high-voltage, single-supply, rail-to-rail output precision JFET op amps. It shares architectural similarities with the ADA4625-1 but contains two independent amplifier circuits. The family is designed to offer optimal performance in high voltage, high gain, and low noise applications without phase reversal issues.

Replacement Considerations

ADA4625-2ARDZ is the tube-packaged equivalent. ADA4625-2ARDZ-RL is another reel variant. Single-channel equivalents include ADA4625-1ARDZ.