AD664AJ

Overview

The AD664AJ is a monolithic quad 12-bit digital-to-analog converter (DAC) manufactured by Analog Devices Inc. It integrates four complete voltage-output DACs on a single chip, featuring double-buffered input latches and a data readback function. All operations are managed through a single microprocessor-compatible I/O port. The device supports parallel interface communication and provides buffered voltage outputs. It operates with analog supply voltages ranging from 11.4 V to 16.5 V and a digital supply of 5 V. The component is housed in a PLCC-44 surface-mount package and is rated for operation between -40°C and +85°C.

Feature Summary

• Four independent 12-bit voltage-output DACs on a single monolithic IC
• Double-buffered input latch structure for simplified interfacing
• Data register readback feature for system verification
• "Reset to Zero" override capability

Applications

• Automatic Test Equipment
• Robotics systems
• Process Control applications
• Disk Drive controllers
• Instrumentation and Avionics

Part Context

The AD664AJ belongs to the AD664 series of high-performance monolithic DACs. This family is designed for applications requiring multiple synchronized analog outputs from a digital source. The 'A' suffix typically denotes an extended or specific temperature range variant within the product line, while 'J' indicates the plastic leaded chip carrier package type. It serves as a core conversion component in mixed-signal systems.

Replacement Considerations

Direct pin-for-pin replacements within the same package may include other variants in the AD664 family, such as the AD664BJ or AD664JPZ, depending on required accuracy specifications like DNL and INL. Verify that the substitute part meets the specific non-linearity and settling time requirements of the original design.