DAC7644E

Digital To Analog Converters Overview

The DAC7644E is a precision, quad-channel, 16-bit digital-to-analog converter manufactured by Texas Instruments. It features an R-2R resistor ladder architecture with buffered voltage outputs and operates on a single +5V digital supply and ±5V analog supplies. The device supports parallel data interfaces and achieves a sampling rate of 100 kS/s with a settling time of 10 µs. Key performance metrics include a gain error of 0.08% FSR, integral nonlinearity (INL) of ±3 LSB, and differential nonlinearity (DNL) of ±2 LSB. It functions within a temperature range of -40°C to +85°C and is housed in a 48-pin SSOP package.

Digital To Analog Converters Feature Summary

• Integrates four independent 16-bit DAC channels with buffered voltage outputs for high drive capability.
• Utilizes an R-2R resistor ladder architecture to ensure precise signal conversion and stability.
• Supports parallel interface communication for efficient data transfer at up to 100 kS/s per channel.
• Includes internal reset functionality to initialize outputs to mid-scale upon power-up or command.

Digital To Analog Converters Applications

• Industrial process control systems requiring multi-channel analog signal generation.
• Precision test and measurement equipment needing stable, high-resolution voltage references.
• Automotive electronic control units utilizing robust analog output capabilities.

Digital To Analog Converters Procurement Notes

Verify the specific ordering suffix against official datasheets to confirm package type and tape/reel specifications. Ensure compatibility with required operating temperatures and supply voltages before procurement. Confirm RoHS compliance status through manufacturer documentation. Validate pinout configurations against PCB layout requirements to prevent installation errors during assembly.

Digital To Analog Converters Selection Notes

Select this component when four isolated 16-bit voltage outputs are required in a compact surface-mount package. The parallel interface suits designs where speed is prioritized over pin count reduction compared to serial alternatives. Verify that the ±5V analog supply requirement aligns with the system power budget. Consider the 48-pin SSOP footprint constraints during mechanical design integration.

Digital To Analog Converters Part Context

The DAC7644E belongs to the DAC7644 family of precision digital-to-analog converters from Texas Instruments. This series is designed for applications demanding high accuracy and multiple output channels. The 'E' suffix typically denotes the standard commercial/industrial temperature grade and tube packaging variant, distinguishing it from reel-based or extended temperature versions within the same functional family.

Digital To Analog Converters Replacement Considerations

The DAC7644EB serves as a direct alternative offering identical electrical characteristics but packaged in tape-and-reel format for automated assembly. Other members of the DAC76xx family may provide similar functionality but often differ in interface type (serial vs. parallel) or channel count. Always verify pin compatibility and thermal specifications before substituting.