AD8669ARZ-REEL

Overview

The AD8669ARZ-REEL is a quad, low noise, precision, 16 V, CMOS, rail-to-rail operational amplifier manufactured by Analog Devices Inc. It utilizes the patented DigiTrim trimming technique to achieve low offset voltage and low input bias current. The device operates on single supplies from 5 V to 16 V or dual supplies of ±2.5 V to ±8 V. Key electrical parameters include a maximum supply current of 275 μA per amplifier at 5 V, a gain bandwidth product of 540 kHz, and a slew rate of 0.3 V/μs at 16 V. It features a voltage noise density of 23 nV/√Hz and an input bias current of 0.3 pA. The component is housed in a 14-lead SOIC package and functions over an extended industrial temperature range of −40°C to +125°C.

Feature Summary

• Utilizes patented DigiTrim trimming technology for low offset voltage and drift.
• Features rail-to-rail output capability to maximize dynamic range.
• Provides very low input bias current suitable for high impedance sensors.
• Operates with low power consumption across wide supply voltage ranges.

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 reel packaging configuration. Confirm the package type corresponds to the 14-lead SOIC variant. Ensure the RoHS compliance status aligns with project requirements. Validate the operating temperature range specifications against environmental constraints. Cross-reference the manufacturer part number with official documentation to confirm authenticity.

Selection Notes

Select this component when multiple channels are required within a single integrated circuit footprint. Consider its low input bias current for interfacing with high source impedance transducers. Evaluate the rail-to-rail output swing if driving low-voltage data converters directly. Assess the power budget against the specified supply current per amplifier. Verify compatibility with the available PCB space for the 14-lead SOIC package.

Part Context

This component belongs to the AD8663/AD8667/AD8669 family of precision amplifiers. While the AD8663 is a single-channel device and the AD8667 is dual-channel, the AD8669 integrates four independent amplifiers. All members share identical core electrical characteristics, including the DigiTrim process and low noise profile. The primary distinction lies in the channel count and corresponding pin configurations.

Replacement Considerations

The AD8669ARUZ serves as a direct functional substitute utilizing a TSSOP package instead of SOIC. Other family members like the AD8667 offer fewer channels but maintain identical performance metrics. Verify pinout compatibility and thermal resistance differences when substituting packages.

FAQ

What is the typical input bias current for the AD8669?

The typical input bias current is 0.3 pA at 25°C.

Does the AD8669 support single-supply operation?

Yes, it supports single-supply operation ranging from 5 V to 16 V.

What is the voltage noise density specification?

The voltage noise density is 23 nV/√Hz at 1 kHz.