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PICOSTRAIN PS09 Features

PicoStrain PS09

Compact System-on-Chip for Resistive Bridge Sensors

General Circuit Features

  • PICOSTRAIN Front-End with up to 150,000 peak-peak divisions (@2mV/V)
  • Capability to measure half-bridges, full-bridges, quattro-bridges
  • Integrated analogue switch for direct driving of Wheatstone-bridges
  • Microprocessor with 24-Bit data structure and 8 k ROM (OTP)
  • Embedded very low current 10 kHz oscillator (300 nA)
  • Standby current with timer active < 2 µA
  • Driver for external 4 MHz ceramic oscillator
  • 8 GPIOs, up to 24 programmable I/O-ports
  • 4 capacitive switch inputs
  • external LCD driver support
  • Embedded temperature measurement and temperature compensation
  • Embedded bandgap voltage reference for low battery detection
  • Watchdog timer
  • Serial SPI and IIC interfaces
  • UART interface (for RS232, RS485)
  • Supply voltage 2.1 to 3.6 V
  • As dice or packaged (QFN40)

Functional Block Diagram

(Click to enlarge)