AD8659ARZ

Overview

The AD8659ARZ is a quad micropower, precision, rail-to-rail input/output operational amplifier manufactured by Analog Devices Inc. It operates from a single supply of 2.7 V to 18 V or dual supplies of ±1.35 V to ±9 V. Key electrical specifications include a maximum offset voltage of 350 µV, a maximum input bias current of 20 pA, and a gain bandwidth product of 230 kHz. The device draws a typical quiescent supply current of 18 µA per amplifier and features excellent electromagnetic interference immunity.

Feature Summary

• Utilizes patented DigiTrim trimming technique for low offset voltage
• Provides high immunity to electromagnetic interference
• Supports wide operating supply voltage range with low power consumption

Applications

• Portable operating systems
• Current monitors
• 4 mA to 20 mA loop drivers
• Buffer/level shifting
• Multipole filters

Procurement Notes

Verify the specific package type and revision level against the manufacturer's ordering guide before procurement. Confirm that the component meets all required environmental and electrical specifications for the intended application. Ensure compatibility with existing design constraints regarding supply voltage and signal integrity.

Selection Notes

Select this component for applications requiring precision amplification with minimal power consumption across a wide voltage range. Consider its rail-to-rail capabilities and low bias current for interfacing with high-impedance sensors. Evaluate the trade-off between its micro-power characteristics and the required gain bandwidth for dynamic signal processing.

Part Context

The AD8659 belongs to the AD8657/AD8659 family of micropower precision amplifiers. It is designed alongside the dual-channel AD8657 to offer flexible channel counts for various system architectures. Both devices share similar performance characteristics, including low offset voltage and high EMI rejection, making them suitable for industrial and portable applications.

Replacement Considerations

Direct replacements within the same family include the AD8657 for dual-channel requirements. Other precision CMOS RRIO amplifiers may be considered if pin compatibility and electrical parameters align with the design specifications.