DAC71408RHAT

Digital To Analog Converters Overview

The DAC71408RHAT is an 8-channel, 14-bit buffered high-voltage output digital-to-analog converter (DAC) from Texas Instruments. It features a 4-wire SPI interface and operates within a supply voltage range of 4.5V to 5.5V. The device includes an integrated low-drift 2.5V internal reference source with a typical drift of 5 ppm/°C. Key electrical parameters include a settling time of 12 µs, INL of ±1 LSB, and DNL of 1 LSB. It supports flexible output configurations ranging from ±2.5 V to ±20 V or 0 V to 40 V, with a drive capability of ±25 mA. Operating temperatures span from -40°C to +125°C in a 40-pin VQFN package.

Digital To Analog Converters Feature Summary

• Integrated low-drift 2.5V precision internal reference voltage source
• Flexible user-selectable bipolar and unipolar output voltage ranges
• High drive capability with integrated output buffers absorbing or sourcing up to 25 mA
• Dedicated A-B toggle pins for generating jitter signals

Digital To Analog Converters Applications

• Optical network equipment requiring high-voltage control
• Industrial automation systems needing multi-channel precision outputs
• Test and measurement instruments utilizing differential output modes

Digital To Analog Converters Procurement Notes

Verify the specific suffix RHAT indicates reel packaging when ordering. Confirm that the 14-bit resolution matches system requirements, as the pin-compatible family includes 12-bit and 16-bit variants. Ensure the 40-VQFN footprint aligns with the PCB layout. Check RoHS compliance status for environmental regulations. Validate the 4.5V to 5.5V supply voltage constraints against the power design.

Digital To Analog Converters Selection Notes

Select this component when eight independent channels are required with high-voltage swing capabilities up to 40 V. The 14-bit resolution offers a balance between precision and cost compared to the 16-bit DAC81408. Consider the integrated buffer if external op-amps are undesirable due to space or current needs. Verify that the 12 µs settling time meets the application's speed requirements. Ensure the operating temperature range covers the intended environment.

Digital To Analog Converters Part Context

This part belongs to the DACx1408 series, which includes the DAC81408 (16-bit) and DAC61408 (12-bit). All three models share pin compatibility and core architecture, differing primarily in resolution. The series is designed for applications demanding high linearity and flexible output configurations. The DAC71408 specifically targets mid-range precision needs within this high-voltage DAC family.

Digital To Analog Converters Replacement Considerations

Pin-compatible substitutes include the DAC81408 for higher resolution and the DAC61408 for lower resolution. Verify register compatibility and software configuration when swapping between these family members. Ensure the replacement part meets the same thermal and electrical specifications.