STMicroelectronics RHFAD128

RHFAD128 is specifically designed to sustain ionizing dose and heavy-ions for space applications by using a high-end proven CMOS technology. This device is a low-power, multiplexed eight-channel 12-bit analog-to-digital converter for conversion from 50 ksps to 1 Msps. The architecture is based on the successive-approximation register with internal track-and-hold. The RHFAD128 features 8 analog inputs which can be programmed to be either 8-single ended or 4 differential inputs using the control register bits. The output serial data are straight binary and are compatible with SPI™. RHFAD128 works from  -55 °C to + 125 °C  ambient temperature.

Key features

• Effective number of bits: 11.5 (typ.), 11.1 (min.)
• ± 2LSB Offset Error
• 4.5 mW consumption (max.)
• 2.7V to 3.6V I/Os

Additional features

• 50 ksps to 1 Msps conversion rate
• 8-to-1-channel single input MUX
• 4-to-1-channel differential input MUX
• 2.7 to 3.6 V operating supply
• Independent analog and digital supplies
• Pure CMOS
• Very low consumption: 1.65 mA typ.@ 3.6 V
• SPI, serial digital output
• Power-down function
• 300 krad TID
• 125 MeV.cm²/mg SEL free

Applications

• Analog multiplexing and conversion in space and harsh environments
• Housekeeping
• Telemetry