AD8624ACPZ-R2

Overview

The AD8624ACPZ-R2 is a quad precision operational amplifier from Analog Devices, housed in a 16-lead LFCSP package. It operates within a supply voltage range of ±2.5 V to ±15 V and supports an extended industrial temperature range of −40°C to +125°C. Key electrical specifications include a maximum input offset voltage of 125 μV, a typical supply current of 215 μA per amplifier, and a gain bandwidth product of 560 kHz at ±15 V operation. The device features rail-to-rail output swing, low voltage noise density of 11 nV/√Hz, and high open-loop gain.

Feature Summary

• Features input bias current cancellation circuitry for very low input bias current across the full operating temperature range.
• Provides rail-to-rail output swing capability to maximize signal-to-noise ratio and dynamic range.
• Designed with unity gain stability and phase reversal prevention when inputs exceed the common-mode range but remain within supply rails.

Applications

• Portable precision instrumentation
• Laser diode control loops
• Strain gage amplifiers
• Medical instrumentation
• Thermocouple amplifiers

Procurement Notes

Verify the specific ordering suffix R2 corresponds to the reel packaging format required for your assembly line. Confirm that the CP-16-17 LFCSP thermal pad connection guidelines are followed during PCB design to ensure proper heat dissipation and electrical grounding as specified in the datasheet outline dimensions.

Selection Notes

Select this component when designing circuits requiring low power consumption alongside high DC precision. The combination of ultralow offset voltage drift and low noise makes it suitable for applications where large error sources cannot be tolerated. Ensure the load capacitance requirements are met to maintain stability given the specified phase margin characteristics.

Part Context

This part belongs to the AD8622/AD8624 family of low-power, precision, rail-to-rail output operational amplifiers. While the AD8622 provides dual channels, the AD8624 variant integrates four independent amplifiers on a single die. Both share identical electrical performance characteristics, differing primarily in channel count and physical package options such as TSSOP or LFCSP.

Replacement Considerations

The AD8624ARUZ serves as a pin-compatible alternative offering the same electrical specifications in a 14-lead TSSOP package instead of the LFCSP form factor. Designers must account for differences in thermal resistance and footprint dimensions when substituting between these package types.

FAQ

Does the AD8624ACPZ-R2 exhibit phase reversal if inputs exceed the common-mode range?

No, the device is designed to prevent output phase reversal even if one or both inputs exceed the specified input voltage range, provided they remain within the supply rails.

What is the maximum differential input voltage allowed?

The internal diodes and series resistors limit the maximum differential input voltage to ±10 V or the supply voltage, whichever is less.