Description
MAG-SEI is a generic signal conditioning circuit for reading out sensors such as RTD, thermocouples, strain gauges, etc. The MAG-SEI device provides an interface for resistive bridge sensor elements, such as RTD, thermocouple, piezo resistive, and strain-gauge pressure-sense elements. The device is a full system-on-chip (SoC) solution that incorporates a programmable gain amplifier, ADC, and digital signal processing. MAG-SEI also includes integrated voltage regulators, an on-chip temperature sensor, digital signal processing, an SPI interface, and an oscillator, thus minimizing the number of external components.
Radiation hardness
- TID tolerance: >1 MGy
- SET/SEU: >60 MeV∙cm²/mg
Key technical specifications
- Differential input channels: 2
- Gain settings: 1 ~ 256
- ADC resolution: 16 bits
- 98 dB
- Sample rate: 5 kHz
- Supply: 1.2 V
- Power consumption: 10 mW
- Temperature range: -50 ~ 125 °C
- Bandwidth: 2kHz
- gain offset = 2 %
- gain error = +/-0.5
- gain drift: 10 ppm/°C
- Offset drift: 10 nV/°C
Applications
- Condition monitoring
- Health monitoring and housekeeping
- Sensor networks
- Temperature sensor readout
- Strain-gauge readout
- Pressure sensor readout
- Post-nuclear accident monitoring
- Remote terminal units
