DAC7617UB/1KG4

Digital To Analog Converters Overview

The DAC7617UB/1KG4 is a quad, serial input, 12-bit voltage output Digital-to-Analog Converter manufactured by Texas Instruments. It features guaranteed 12-bit monotonicity over the -40°C to +85°C temperature range and operates from a single +3V supply. 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%, linearity error of ±1 LSB, and differential linearity error of ±1 LSB. Power dissipation is typically 3 mW at VDD = +3V.

Digital To Analog Converters Feature Summary

• Quad-channel architecture with independent R-2R ladder networks and output operational amplifiers sharing common reference inputs.
• Double-buffered digital interface allows new data entry without disturbing analog outputs, enabling simultaneous multi-channel updates via LDAC.
• Asynchronous reset function clears all registers to zero-scale or mid-scale based on the RESETSEL pin configuration.

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 ordering suffix /1K indicates tape and reel packaging containing 1000 devices per reel. Confirm the UB suffix corresponds to the SO-16 package with ±1 LSB linearity matching. Ensure compatibility with single-supply +3V operation requirements before procurement.

Digital To Analog Converters Selection Notes

Select this component when a quad-channel, low-power DAC is required for single-supply applications. The UB variant offers tighter linearity specifications compared to the U variant. Verify that the serial interface timing meets system clock constraints and that the SO-16 package fits the PCB layout.

Digital To Analog Converters Part Context

The DAC7617 is part of the DAC761x family of precision digital-to-analog converters. This specific model represents the industrial grade version in the SO-16 package with enhanced linearity matching. It serves as a compact solution for multi-channel signal generation in space-constrained designs.

Digital To Analog Converters Replacement Considerations

The DAC7617U is a compatible alternative with identical functionality but different linearity specifications (±2 LSB). The DAC7617E provides the same performance in an SSOP-20 package. Verify package dimensions and pinout compatibility before substitution.

Digital To Analog Converters FAQ

How does the asynchronous reset function operate?

An asynchronous reset input sets all DAC registers to either zero-scale (code 000H) or mid-scale (code 800H). The target code is determined by the logic state of the RESETSEL pin: LOW selects zero-scale, while HIGH selects 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 shifted in.

Can the DAC7617 output voltage swing below ground?

No, the device operates from a single +3V supply. The output can swing to ground (zero-scale), but it cannot go negative. Care must be taken when measuring zero-scale error due to potential offset limitations near ground.