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STMicroelectronics Unveils DAC for Satellite Applications

The RHRDAC121 is QML-V qualified and comes in a hermetic ceramic package with gold or solder-dipped leads.

STMicroelectronics has introduced 2.5V rad-hard Digital to Analog converter (DAC), RHRDAC121 for next-generation satellite applications.

STMicroelectronics DACThe STMicroelectronics RHRDAC121 radiation-hardened digital-to-analog converter (DAC) operates down to 2.5V for use in modern, low-power system designs that older 3.3V parts cannot support.

Consuming just 0.6mW at its maximum speed and supply voltage, the 12-bit 1Msps successive-approximation register (SAR) DAC helps reduce the size, weight, and power (SWaP) in next-generation satellites.

Typically used in circuits for telemetry, housekeeping, and precision sensor-gain adjustment, its features include an SPI-compatible serial output, internal voltage reference, and automatic power-on-reset to zero-volt output.

These ensure high precision with minimal external components, saving circuit complexity and board area.

Maintaining stable performance parameters in harsh conditions up to 100krad (Si) total ionizing dose (TID), the RHRDAC121 is single-event latch-up (SEL) -free up to 125MeV.cm²/mg.

It is characterized by single-event transient (SET) and single-event upset (SEU) and is ready for immediate deployment with no further up-screening required.

The RHRDAC121 is QML-V qualified and comes in a hermetic ceramic package with gold or solder-dipped leads.

It is also available as a bare die. Designed and manufactured in Europe, it leverages ST’s 130nm pure CMOS technology and processes proven over 45 years of serving the space industry.

The DAC development has been funded by CNES (Centre National d’Etudes Spatiales), the French Space Agency.


Aishwarya Saxena

A book geek, with creative mind, an electronics degree, and zealous for writing.Creativity is the one thing in her opinion which drove her to enter into editing field. Allured towards south Indian cuisine and culture, love to discover new cultures and their customs. Relishes in discovering new music genres.

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