DAC121S101WGRLV

Digital To Analog Converters Overview

The DAC121S101WGRLV is a radiation-hardened, 12-bit voltage-output digital-to-analog converter manufactured by Texas Instruments. It operates from a single 2.7 V to 5.5 V supply and consumes 177 µA at 3.6 V. The device features a rail-to-rail output amplifier and a three-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards, supporting clock rates up to 20 MHz. Key specifications include a typical settling time of 12.5 µs, DNL of +0.21/-0.10 LSB, and INL of ±8 LSB. It provides power-on reset to zero volts, four power-down modes reducing consumption below 1 µW, and ensures monotonicity over the -55°C to +125°C temperature range.

Digital To Analog Converters Feature Summary

• Radiation hardened design with 100 krad(Si) total ionizing dose tolerance and ELDRS-free operation.
• Rail-to-rail voltage output capability utilizing the supply voltage as the reference.
• Four selectable power-down modes for optimized energy efficiency in battery-operated systems.
• Guaranteed monotonicity ensured by internal resistor string architecture.

Digital To Analog Converters Applications

• Satellite altitude and orbit control systems
• Precision sensor signal conditioning
• Motor control applications in high-temperature environments

Digital To Analog Converters Procurement Notes

Verify the specific ordering suffix WGRLV against the manufacturer's current datasheet to confirm package type and radiation qualification status. Ensure compatibility with system requirements for total ionizing dose and single-event effects before procurement.

Digital To Analog Converters Selection Notes

Select this component for designs requiring radiation tolerance and low power consumption in harsh environments. Confirm that the 12-bit resolution and 20 MHz serial interface speed meet the system's data throughput needs. Verify that the supply voltage range aligns with the available power rails.

Digital To Analog Converters Part Context

This part belongs to the DAC121S101 family of micro-power digital-to-analog converters. It shares architectural similarities with commercial variants but includes specific radiation hardening enhancements suitable for space and defense applications. The device replaces older radiation-hardened DAC models in satellite and aerospace designs.

Digital To Analog Converters Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material. Consult the manufacturer's documentation for direct replacements or pin-compatible alternatives within the same product family.