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AS89020

Features

  • 4 channel, current input analog-to-digital converter (ADC)
  • 12-bit digital output
  • Each channel is addressable and programmable in 17 levels
  • Measurement of positive and negative currents
  • Temperature compensation on chip
  • Fast SPI serial digital output

Benefits

  • Conversion of 4 sensor signals of photodiodes or other sensors with current signal output
  • Each channel separately programmable in 17 stages
  • Parallel sampling + MUX + SPI output
  • High amplification linearity, no cross talk
  • High absolute accuracy without additional sources
  • Supply and temperature independet performance
  • Low power consumption

Product parameters

InterfaceFast SPI up to 16MHz
ProgrammableTransimpedance in 17 stages 20kOhm - 102MOhm
Sensitivityup to 2.8 pA/LSB
Input Current12nA - 12µA
Signal Frequencies3 to 340
Supply Voltage2.7 to 3.6
PackageSSOP20
Size8.56 x 5.84 x 1.62
Temperature Range-25 to 85