AD7247BQ

Overview

The AD7247BQ is a dual-channel, 12-bit digital-to-analog converter (DAC) from Analog Devices' DACPORT family. It utilizes LC2MOS technology and an R-2R architecture to provide high-speed performance with a typical settling time of 5 microseconds. The device features parallel word input loading and includes internal voltage references. It supports bipolar and unipolar output configurations, operating with supply voltages typically ranging from ±15V for analog circuits and up to 15V for digital logic. The component is housed in a 24-pin ceramic dual in-line package (CDIP), designed for robust industrial and military applications requiring precise analog signal generation.

Feature Summary

• Dual 12-bit resolution with LC2MOS technology for low power and high speed
• Fast settling time of 5 µs typical
• Integrated internal voltage reference options
• Parallel data interface with word input loading

Applications

• Industrial process control systems
• Test and measurement equipment
• Military and aerospace avionics

Part Context

The AD7247BQ belongs to the AD7237/AD7247 DACPORT series, which are known for their monolithic integration of DACs and amplifiers. This specific part number denotes the military or extended temperature grade variant within the CDIP package lineup, offering enhanced reliability compared to commercial grades. It serves as a direct upgrade or alternative to older discrete DAC solutions in legacy designs.

Replacement Considerations

Compatible substitutes include the AD7247JNZ for commercial-grade DIP applications and the AD7247AARZ for surface-mount SOIC requirements. When replacing, verify that the pinout compatibility remains consistent across the DACPORT family and ensure the new package type meets the PCB layout constraints.