DAC7654YT

Digital To Analog Converters Overview

The DAC7654YT is a quad, 16-bit digital-to-analog converter manufactured by Texas Instruments. It features four independent voltage outputs with R-2R architecture and an internal bandgap reference. The device accepts 24-bit serial input data and supports double-buffered inputs for simultaneous updates. It operates from a single +5V supply or dual ±5V supplies, with a logic interface ranging from 3V to 5V. Key electrical parameters include a settling time of 12µs to 0.003%, a glitch impulse of 1nV-s (typical), and power consumption of 18mW at +5V. It is housed in an LQFP-64 package and specified for operation between -40°C and +85°C.

Digital To Analog Converters Feature Summary

• Provides four independent 16-bit voltage output channels with low glitch energy.
• Features double-buffered data inputs allowing simultaneous update of all DAC registers.
• Includes programmable asynchronous reset to mid-scale or zero-scale codes.
• Integrates an internal bandgap voltage reference for simplified system design.

Digital To Analog Converters Applications

• Process control systems
• Closed-loop servo-control applications
• Motor control circuits
• Data acquisition systems

Digital To Analog Converters Procurement Notes

Verify the specific ordering suffix 'YT' corresponds to the tape and reel packaging format containing 250 units as defined in the manufacturer's ordering information. Confirm that the component meets RoHS compliance requirements for the intended manufacturing process. Ensure proper ESD handling precautions are observed during assembly due to CDM sensitivity.

Digital To Analog Converters Selection Notes

Select this component when a quad-channel, high-resolution DAC with low power consumption is required. Verify compatibility with the system's supply voltage configuration, as it supports both single +5V and dual ±5V operation. Ensure the serial interface timing aligns with the host controller's clock and data setup requirements.

Digital To Analog Converters Part Context

The DAC7654 belongs to the DAC7654 series of precision digital-to-analog converters. It is designed for applications requiring multiple synchronized analog outputs with high linearity. The device is available in various packages including LQFP-64, catering to different board space and thermal management needs within industrial and instrumentation equipment.

Digital To Analog Converters Replacement Considerations

Direct pin-compatible replacements within the same family include DAC7654Y, DAC7654YB, and DAC7654YC variants. These share identical electrical specifications and functionality but may differ in packaging quantity or specific grade tolerances. Verify the exact suffix requirements against the current bill of materials.

Digital To Analog Converters FAQ

How does the DAC7654 handle simultaneous updates of its four channels?

The device utilizes double-buffered data inputs. Data is first loaded into the input registers via the serial interface, and then transferred simultaneously to the DAC registers using the LOAD and LDAC control signals.

What is the function of the RSTSEL pin?

The RSTSEL pin determines the state of the DAC registers upon a reset command. If RSTSEL is high, the registers reset to mid-scale (code 8000h); if low, they reset to zero-scale (code 0000h).

Can the DAC7654 operate with a bipolar supply?

Yes, the DAC7654 can be powered by a dual ±5V supply (VCC = +5V, VSS = -5V) to support bipolar output voltage ranges, in addition to single-supply operation.