Home / Products / Sensor Interfaces / PICOSTRAIN Resistive Sensing / PS081 Resistance-to-Digital Converter

Features

  • RMS noise 8.9nV SINC5, 5Hz
  • Up to 250000 peak-peak divisions (2mV/V strain)
  • Scalable udapte rate from <1Hz to 1000Hz
  • Resolution: 28-bit ENOB (RMS)
  • 24-bit internal microprocessor with 2 kB EEPROM
  • Internal LCD controller for 4×14, 3×15 and 2×16 segments
  • 4-wire serial SPI interface
  • Current consumption ~5µA PS081 itself at low current configuration
  • Power supply voltage: 2.1V to 3.6V

 

Benefits

  • Single-chip solution for weighing applications
  • Converter, microcontroller and LCD controller in one chip
  • 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]
11.5
Max. Rate
1000
Operating Supply Range [V]
2.1 to 3.6
Interface
SPI
CPU
24-bit
Memory
2k EEPROM
GPIO
21
Ambient Temperature Range [°C]
-40 to +125
Package
QFN56

Applications

  • Torque wrenches
  • Pressure indicators
  • Legal for trade scales
  • Counting scales