Home / Products / Sensor Interfaces / PS09 Resistance-to-Digital Converter

Features

  • RMS noise 11nV SINC5, 5Hz
  • Up to 80000 peak-peak divisions (2mV/V strain)
  • Scalable udapte rate from <1Hz to 10000Hz
  • Resolution: 28-bit ENOB (RMS)
  • 24-bit internal microprocessor with 8kB OTP
  • 4-wire serial SPI interface
  • Current consumption ~7µA PS09 itself at low current configuration
  • Power supply voltage: 2.1V to 3.6V

 

Benefits

  • Small and compact solution for weighing applications
  • Converter and microcontroller in one chip
  • Perfectly suited for building digital load cells and consumer scales
  • Extreme low total system current (down to 15μA including strain gages)
  • Very low self heating of the sensor
  • Gain and offset correction of the load cell

 

Product parameters

Half Bridges
4
Noise [nV@5V]
19
Max. Rate
10000
Operating Supply Range [V]
2.1 to 3.6
Interface
SPI, I²C, UART
CPU
24-bit
Memory
8k OTP
GPIO
24
Ambient Temperature Range [°C]
-40 to +125
Package
QFN40

Applications

  • Force sensors
  • Pressure sensors
  • Scales
  • Digital load cells
  • Torque wrenches
  • Precision temperature measurement
  • Legal for trade scales
  • Counting scales