Block diagram
Resistive bridge sensor signal conditioner
(Prototype chips are available for demonstration. Final product version will be ready by Q1/2021.)
The SROIC2100 device provides an interface for resistive bridge sensor elements, such as RTD, thermocouple, piezoresistive, and strain-gauge pressure-sense elements. The device is a full system-on-chip (SoC) solution that incorporates programmable gain amplifier, ADC, and digital signal processing. Further, the SROIC2100 device includes integrated voltage regulators, an on-chip temperature sensor, and an oscillator, thus minimizing the number of external components.
Main Features
- Analog front-end with programmable gain for resistive bridge sensors
- Ultra-low input noise
- On-chip temperature sensor
- On-chip oscillator
- On-chip excitation signal generation
- 16-bit delta-sigma Analog-to-Digital converter
- On-chip digital decimation filter
Key Technical Specifications
- NO. of input channels: 4
- Gain settings: 1 ~ 256
- ADC Resolution: 16 bits
- SNDR: 98 dB
- Sample rate: 5 kHz
- Supply: 1.2 V
- Power consumption: 4 mW
- Temperature range: -50 ~ 125 °C
Radiation Hardness
- TID tolerance: >100 Mrad
- SEL: >100 MeV·cm2/mg
- SET/SEU: >60 MeV·cm2/mg
Applications
- Condition monitoring
- Health monitoring and Housekeeping
- Sensor networks
- Temperature sensor readout
- Strain-gauge readout
- Pressure sensor readout
- Post-nuclear-accident monitoring
This ASIC is part of a front-end rad-hard BiSS I/O module designed by MAGICS Instruments within Fusion for Energy remote handling activities (F4E-OMF-0633-01-03).
