DAC7731ECG4

Digital To Analog Converters Overview

The DAC7731ECG4 is a single-channel, 16-bit voltage-output digital-to-analog converter manufactured by Texas Instruments. It features an internal +10V reference and serial interface compatible with standard SPI protocols. The device utilizes an R-2R resistor ladder architecture to achieve a sampling rate of 172 kS/s and a settling time of 3 µs. It operates on dual analog supply voltages ranging from -15.75 V to -4.75 V and a 5 V digital supply. Key performance metrics include a differential nonlinearity (DNL) of ±1 LSB and integral nonlinearity (INL) of ±3 LSB. The component is housed in a 24-pin SSOP package and supports operation within a temperature range of -40°C to +85°C.

Digital To Analog Converters Feature Summary

• Integrates a precision internal +10V reference source to minimize external component requirements.
• Supports reset-to-mid-scale functionality for predictable output states upon initialization.
• Includes a serial data output (SDO) pin to facilitate daisy-chaining multiple converters.
• Features a buffered voltage output stage capable of driving moderate loads directly.

Digital To Analog Converters Applications

• Industrial process control systems requiring precise analog signal generation.
• Data acquisition systems interfacing with field instruments.
• Calibration equipment needing stable, high-resolution voltage references.
• Automated test and measurement platforms utilizing serial communication.

Digital To Analog Converters Procurement Notes

Verify the suffix 'CG4' indicates lead-free composition and RoHS compliance per Texas Instruments specifications. Confirm the package type matches the required 24-pin SSOP footprint for PCB layout compatibility. Ensure the operating environment remains within the specified -40°C to +85°C industrial temperature range to maintain guaranteed linearity and timing parameters.

Digital To Analog Converters Selection Notes

Select this component when a single-channel, 16-bit resolution is sufficient for the application. The internal reference simplifies design compared to external reference solutions. Consider the 172 kS/s update rate against system bandwidth requirements. Verify that the 5V digital logic levels are compatible with the host microcontroller or FPGA interface.

Digital To Analog Converters Part Context

The DAC7731ECG4 belongs to the DAC7731 family of 16-bit serial input DACs. It shares architectural similarities with the DAC7631 but offers higher speed and integrated reference capabilities. The 'C' grade denotes industrial temperature performance, while 'G4' specifies the green, lead-free packaging variant compliant with environmental standards.

Digital To Analog Converters Replacement Considerations

The DAC7731E serves as a direct functional equivalent without the specific lead-free suffix designation. For quad-channel applications, the DAC7734 provides similar performance across four outputs. Lower-speed alternatives like the DAC7631 may be used if power consumption is critical and speed requirements are relaxed.