1 Features

• High accuracy, low noise, low power, small size resistive sensing signal conditioner
• User-programmable temperature and nonlinearity compensation
• On-chip ARM®Cortex® M0 microprocessor allows users to develop and implement calibration software
• One-wire interface enables the communication through power supply pin without using additional lines
• On-chip power management accepts wide power supply voltage from 3.3 V to 30 V
• Operating temperature range: –40°C to +150°C
• Memory:
  • 8-kB software memory
  • 128 bytes EEPROM
  • 1-kB data SRAM
• Accommodates sensor sensitivities from 1 mV/V to 135 mV/V
• Two individual analog-front end (AFE) chains, each including:
  • Low-noise programmable gain amplifier
  • 24-bit sigma-delta analog-to-digital converter
• Built-in internal temperature sensor with option to use external temperature sensor
• 14-bit DAC with programmable gain amplifier
• Output options:
  • Ratiometric and absolute voltage output
  • 4- to 20-mA current loop interface
  • One-wire interface (OWI) over power line
  • PWM output
  • Serial peripheral interface (SPI)
  • Inter-integrated circuit (I²C)
• Depletion MOSFET gate driver
• Diagnostic functions