GENEVA – STMicroelectronics in Geneva is introducing the RHRDAC121 radiation-hardened D/A converter for use in modern low-power systems designs that older 3.3-volt parts cannot support.
The RHRDAC121 operates down to 2.5 volts and consumes 0.6 milliwatts at its maximum speed and supply voltage. The 12-bit 1-megasample-per-second successive-approximation register (SAR) D/A converter helps reduce size, weight, and power consumption (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.
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Maintaining stable performance parameters in harsh conditions to 100 kilorads total ionizing dose, the RHRDAC121 is free of single-event latch-up to 125MeV.cm²/mg. It is characterized for single-event transient and single-event upset and ready for immediate deployment with no further up-screening required.
The RHRDAC121 D/A converter is QML-V qualified and comes in a hermetic ceramic package with gold or solder-dipped leads. It also is available as bare die.
Designed and manufactured in Europe, it is built ST’s 130-nanometer pure CMOS technology and processes. For more information contact STMicroelectronics online at www.st.com/en/space-products/rad-hard-data-converters.html.
