DAC7617UB/1K

Digital To Analog Converters Overview

The DAC7617UB/1K is a quad, serial input, 12-bit voltage output digital-to-analog converter manufactured by Texas Instruments. It operates from a single +3V supply and features guaranteed 12-bit monotonicity over the -40°C to +85°C temperature range. The device utilizes an R-2R ladder architecture with double-buffered data inputs for simultaneous updates. Key electrical parameters include a settling time of 10 μs to 0.012%, a power dissipation of 3 mW, and a maximum linearity error of ±1 LSB. It is housed in a 16-pin SOIC package.

Digital To Analog Converters Feature Summary

• Quad channel configuration with independent R-2R ladder networks and output operational amplifiers sharing common reference inputs.
• Double-buffered serial data interface allowing new data entry without disturbing analog outputs during simultaneous updates.
• Asynchronous reset function configurable via the RESETSEL pin to initialize registers to zero-scale or mid-scale codes.

Digital To Analog Converters Applications

• Process control systems
• Automatic test equipment (ATE) pin electronics
• Closed-loop servo-control applications
• Motor control circuits
• Data acquisition systems

Digital To Analog Converters Procurement Notes

Verify the specific ordering suffix '/1K' indicates tape and reel packaging containing 1000 devices per reel. Confirm that the 'UB' designation corresponds to the SO-16 package with improved linearity specifications compared to standard variants. Ensure compatibility with single-supply +3V operation requirements before finalizing procurement orders.

Digital To Analog Converters Selection Notes

Select this component when a quad-channel DAC with low power consumption and serial interface is required. The UB variant offers tighter linearity specifications than the U version. Consider the SSOP-20 package option if space constraints favor smaller footprints. Verify that the 10 μs settling time meets system timing requirements.

Digital To Analog Converters Part Context

The DAC7617 belongs to the DAC7617 family of precision digital-to-analog converters. It shares architectural similarities with the DAC7616 but differs in power supply requirements and linearity specifications. The family includes variants with different packages and accuracy grades, such as the DAC7617E and DAC7617EB.

Digital To Analog Converters Replacement Considerations

The DAC7617U serves as a lower-specification alternative within the same package. The DAC7617E provides the same functionality in an SSOP-20 package. Cross-referencing with the DAC7616 requires verification of supply voltage differences.

Digital To Analog Converters FAQ

How does the RESETSEL pin affect the asynchronous reset function?

When the RESETSEL pin is LOW, an active LOW on the RESET input sets all DAC registers to code 000H (zero-scale). When RESETSEL is HIGH, the same reset signal sets the registers to code 800H (mid-scale).

What is the purpose of the double-buffered data inputs?

The double buffering allows new data to be loaded into the input registers without affecting the current analog outputs. This enables simultaneous updating of all four DAC channels by asserting the LDAC signal after all data has been entered.

Can the DAC7617 operate with negative supply voltages?

No, the DAC7617 is designed for single-supply operation using a +3V nominal supply. The output voltage range is defined by VREFL and VREFH, typically spanning from ground to the positive reference voltage.