AD8669ARUZ-REEL

Overview

The AD8669ARUZ-REEL is a quad precision operational amplifier from Analog Devices, utilizing patented DigiTrim technology for low offset voltage. It features rail-to-rail output capability and operates on single supplies from 5 V to 16 V or dual supplies of ±2.5 V to ±8 V. Key electrical specifications include a maximum input offset voltage of 300 µV at 16 V supply, an input bias current of 300 fA, and a voltage noise density of 23 nV/√Hz. The device provides a gain-bandwidth product of 540 kHz and a slew rate of 0.3 V/µs. It is housed in a 14-lead TSSOP package and supports operation across the extended industrial temperature range of −40°C to +125°C.

Feature Summary

• Utilizes patented DigiTrim trimming technique to achieve low offset voltage and drift.
• Features rail-to-rail output swing to maximize dynamic range for driving data converters.
• Provides very low input bias current suitable for high impedance sensor applications.
• Operates stably with unity-gain configurations.

Applications

• Sensor front ends
• Transimpedance amplifiers
• Electrometer applications
• Photodiode amplification
• Low power ADC drivers

Procurement Notes

Verify that the specific ordering suffix matches the required packaging format. Confirm the component meets RoHS compliance standards as indicated by the 'Z' designation in the part number. Ensure the selected variant corresponds to the correct package type and temperature range specified in the manufacturer's ordering guide before finalizing procurement.

Selection Notes

Select this component when a quad amplifier configuration is required alongside low noise and precision characteristics. The wide supply voltage range accommodates both single and dual supply systems. Consider the rail-to-rail output feature if interfacing with low-voltage analog-to-digital converters. Verify thermal requirements against the junction temperature limits provided in the absolute maximum ratings.

Part Context

This component belongs to the AD8663/AD8667/AD8669 family of low noise, precision CMOS operational amplifiers. While the AD8663 offers a single channel and the AD8667 provides dual channels, the AD8669 integrates four independent amplifiers within a single package. All members share identical core electrical performance metrics and utilize the same DigiTrim technology for precision.

Replacement Considerations

Direct functional substitutes within the same series include the AD8669ARZ and AD8669ARZ-REEL variants. These alternatives offer identical electrical specifications but differ in package style (SOIC vs. TSSOP) or reel packaging configuration. Verify pinout compatibility and physical footprint constraints before substitution.

FAQ

Does the AD8669 support unity-gain stability?

Yes, the datasheet explicitly lists the amplifier as unity-gain stable.

What is the maximum supply voltage for this device?

The device supports a maximum supply voltage of 16 V for single-supply operation or ±8 V for dual-supply operation.

How does the DigiTrim technology benefit this amplifier?

DigiTrim is a patented trimming technique used to achieve low offset voltage and low offset voltage drift, enhancing precision without requiring external adjustments.