ADA4625-2ARDZ-RL

Overview

The ADA4625-2ARDZ-RL 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 (SOIC-8 EP) and operates on single supplies from 5 V to 36 V or dual supplies from ±2.5 V to ±18 V. The device provides a typical gain bandwidth product of 18 MHz, a slew rate of 48 V/µs, and low voltage noise density of 3.3 nV/√Hz at 1 kHz. It offers rail-to-rail output capability, high capacitive load drive, and no phase reversal when inputs exceed supply rails.

Feature Summary

• Dual-channel architecture with JFET input stage for low bias current and high impedance
• Rail-to-rail output swing enabling maximum dynamic range in single-supply applications
• No phase reversal even when input common-mode voltage exceeds either power supply rail
• High capacitive load drive capability without requiring external isolation components

Applications

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

Procurement Notes

Verify the specific ordering suffix '-RL' corresponds to tape and reel packaging rather than tube packaging when sourcing this component. Confirm that the manufacturer's datasheet revision matches the required specifications, as electrical characteristics may vary between revisions. Ensure the selected package variant includes the exposed thermal pad for proper heat dissipation and grounding.

Selection Notes

Select this component for applications requiring dual channels with high speed and low noise characteristics. The wide operating voltage range supports both single and dual supply designs. Consider the exposed pad requirement for PCB layout to ensure adequate thermal management and signal integrity during operation.

Part Context

This part belongs to the ADA4625 family of high-voltage, single-supply, rail-to-rail output precision JFET op amps. It complements the single-channel ADA4625-1 and shares similar performance metrics regarding bandwidth, noise, and settling time. The dual configuration allows for cost-effective implementation of differential circuits or multi-channel signal conditioning systems.

Replacement Considerations

ADA4625-2ARDZ

FAQ

Does the ADA4625-2 exhibit phase reversal if the input voltage exceeds the supply rails?

No, the device guarantees no phase reversal even when the input range exceeds either supply rail by 200 mV.

What is the maximum capacitive load the output can drive directly?

The output is capable of driving loads up to 1000 pF and/or 600 Ω loads simultaneously without external compensation.