DAC7644E/1KG4

Digital To Analog Converters Overview

The DAC7644E/1KG4 is a precision, quad-channel, 16-bit digital-to-analog converter manufactured by Texas Instruments. It features an R-2R resistor ladder architecture and delivers buffered voltage outputs. The device operates with a single +5V digital supply and dual ±5V analog supplies (typically ranging from 4.75V to 5.25V for digital and 4.75V to 15.75V for analog). It utilizes a parallel interface for data input 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, differential nonlinearity of ±2 LSB, and integral nonlinearity of ±3 LSB. The component is housed in a 48-pin SSOP package and supports operation within a temperature range of -40°C to +85°C.

Digital To Analog Converters Feature Summary

• Quad-channel configuration providing four independent 16-bit voltage output channels within a single integrated circuit.
• Parallel interface design enabling high-speed data transfer at up to 100 kS/s sampling rates.
• Integrated reset function that forces all outputs to mid-scale upon power-up or command activation.

Digital To Analog Converters Applications

• Industrial process control systems requiring multi-channel signal generation.
• Programmable logic controller (PLC) analog output modules.
• Test and measurement equipment needing precise multi-point voltage references.

Digital To Analog Converters Procurement Notes

Verify the specific suffix '1KG4' against the manufacturer's current datasheet to confirm packaging details, as this indicates a reel quantity of 1000 units. Ensure compatibility with existing board layouts for the 48-SSOP footprint. Confirm that the parallel interface timing requirements align with the host microcontroller specifications before finalizing procurement.

Digital To Analog Converters Selection Notes

Select this component when a system requires four synchronized 16-bit voltage outputs with low latency. The parallel interface is suitable for applications where pin count is not the primary constraint but speed is critical. Compare against serial alternatives like the DAC7634 if fewer pins are available, noting the trade-off in interface complexity versus throughput.

Digital To Analog Converters Part Context

This part belongs to the DAC7644 family of precision DACs. It shares architectural similarities with the DAC7644 but differs in packaging and tape-and-reel configuration. It serves as a higher-density alternative to single-channel devices like the DAC7631, offering integrated multi-channel capability without external multiplexing.

Digital To Analog Converters Replacement Considerations

The DAC7644E is the tube-packaged equivalent. For direct functional substitution, verify pinout compatibility with other quad-channel 16-bit DACs such as the DAC7744 series, ensuring interface type (parallel vs. serial) matches the system design constraints.