DAC1221E/2K5

Digital To Analog Converters Overview

The DAC1221E/2K5 is a 16-bit low-power digital-to-analog converter from Texas Instruments. It features a delta-sigma architecture with a sampling rate of 3.84 kS/s and one channel. The device provides voltage unbuffered output via 2-wire, 3-wire, or SPI interfaces. It operates on a single 4.75 V to 5.25 V supply, consumes 2.5 mW, and settles in 1.8 ms. Packaged in an SSOP-16, it supports an operating temperature range of -40°C to +85°C.

Digital To Analog Converters Feature Summary

• Integrates on-chip offset and gain calibration for enhanced accuracy.
• Utilizes delta-sigma modulation for high-resolution conversion.
• Supports flexible serial communication protocols including SPI.

Digital To Analog Converters Applications

• Battery-powered instrumentation systems
• Industrial process control loops
• Portable medical devices

Digital To Analog Converters Procurement Notes

Verify the specific suffix 'G4' against the datasheet to confirm RoHS compliance status and lead-free manufacturing details. Ensure the SSOP-16 package matches the PCB footprint requirements. Confirm that the 3.84 kS/s sampling rate meets the system bandwidth needs. Validate the 4.75 V to 5.25 V supply voltage compatibility with the power design.

Digital To Analog Converters Selection Notes

Select this component when 16-bit resolution and low power consumption are critical. The delta-sigma architecture suits applications requiring high precision at moderate speeds. Compare settling time and interface options against other DAC families. Consider the single-supply operation for simplified power management in portable designs.

Digital To Analog Converters Part Context

This part belongs to the DAC1220 series, which includes various resolutions. The DAC1221 specifically offers 16-bit performance. It shares the low-power delta-sigma design philosophy with the 20-bit DAC1220 but targets different precision requirements. The E variant denotes the commercial temperature grade.

Digital To Analog Converters Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify cross-reference data through official Texas Instruments channels before substitution.

Digital To Analog Converters FAQ

What is the settling time of the DAC1221?

The settling time is 1.8 ms.

Does the DAC1221 include internal calibration?

Yes, it features on-chip offset and gain calibration.