AD8664ARZ

Overview

The AD8664ARZ is a quad precision CMOS operational amplifier manufactured by Analog Devices Inc. It features four independent channels within a single SOIC-14 package, designed for high DC accuracy and low noise applications. The device operates on a supply voltage range of 5 V to 16 V with a maximum rating of 16 V. Key electrical specifications include a gain-bandwidth product of 4 MHz, a slew rate of 3.5 V/µs, and an input offset voltage of 50 µV. Input bias current is specified at 1 pA, while the input voltage noise density is 12 nV/√Hz. Common-mode rejection ratio (CMRR) and power supply rejection ratio (PSRR) both reach 110 dB. The amplifier delivers rail-to-rail output swing and draws 6.2 mA of operating supply current. It functions reliably across an industrial temperature range from -40°C to +125°C.

Feature Summary

• Quad-channel architecture providing four independent precision amplifiers in a compact surface-mount package
• Rail-to-rail output capability allowing signal swings close to the supply rails
• Low input offset voltage and bias current ensuring high DC measurement accuracy
• High common-mode and power supply rejection ratios for robust performance in noisy environments

Applications

• Precision data acquisition systems requiring multi-channel signal conditioning
• Industrial process control instrumentation
• Medical equipment signal processing
• Sensor interface circuits demanding low noise and high accuracy

Procurement Notes

Verify the specific suffix and packaging configuration against official Analog Devices documentation before procurement. Confirm that the component meets required RoHS compliance standards for your region. Ensure the ordering part number matches the exact pinout and thermal characteristics specified in the datasheet. Cross-reference the manufacturer's latest revision history to confirm availability and any potential design changes.

Selection Notes

Select this component when multiple precision amplification channels are required in a space-constrained design. It is suitable for applications needing rail-to-rail output without sacrificing DC accuracy. Consider the 4 MHz bandwidth and 3.5 V/µs slew rate for moderate-speed signal processing tasks. Evaluate the 6.2 mA supply current against system power budgets compared to lower-power alternatives like the AD8544 series if speed is not critical.

Part Context

The AD8664 belongs to the AD866x family of precision CMOS operational amplifiers from Analog Devices. This family includes variants with different channel counts, such as the dual AD8662 and single AD8661. These devices share similar electrical characteristics, focusing on low noise, low offset, and rail-to-rail output performance. They are designed to replace older bipolar or JFET input amplifiers in modern low-voltage precision applications.

Replacement Considerations

Check for direct functional equivalents within the AD866x family, such as the AD8662 for dual-channel needs. Verify pin compatibility with other quad amplifiers in the SOIC-14 package if substituting with parts from other manufacturers. Ensure replacement components meet the same 16 V maximum supply voltage and -40°C to +125°C temperature range requirements.