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ams Sensors Germany GmbH
db09284e
V3.0
1 – 2017
-07-06
DATASHEET
AS89020
4-channel, current input 12 bit analog-to-digital converter (ADC)
SSOP20
Order No.: 305040004
Status: preliminary
FEATURES
▪ Conversion of 4 sensor signals of
photodiodes (e.g. RGB/XYZ color plus one
blank channel for compensation of parasitic
currents or temperature conversion) or other
sensors with current signal output
▪ 12 bit signal resolution at an achievable
sensitivity of up to 2.8 pA/LSB
▪ Programmable full-scale range from 11.7 nA
to 12 µA
▪ Sampling rate up to 100 kS/s for all
channels
▪ Measurement of positive and negative
currents
▪ Up to 16 MHz fast SPI-interface
▪ High amplification linearity, no cross talk
▪ High absolute accuracy and reliability
without additional sources
▪ Supply and temperature independent
performance
▪ Supply voltage from 2.7 V to 3.6 V
▪ Temperature range from -25 °C to 85 °C
▪ Deliverable in standard SSOP20 package
APPLICATIONS
▪ Precise conversion of photo current for
optical sensors and arrays (e.g. UV, VIS, IR)
and other sensors with current output
▪ In combination with ams Sensors Germany’s
color sensors or other multi-channel pin-
diodes: measurement of surfaces and
distances
▪ In combination with ams Sensors Germany’s
color sensors: measurement of light –
chromaticity coordinates (XYZ CIE1931,
DIN5033 and similar) or color temperatures
to control and process displays and
backlights (e.g. LED, CCFL)
▪ In combination with ams Sensors Germany’s
color and spectral sensors: measurement of
reflective and/or transmitted light –
chromaticity coordinates (XYZ CIE1931,
DIN5033 and similar) measurement of
objects and surfaces for analyses, quality
management, sorting, etc.
TYPICAL MARKETS
▪ Lighting SSL and photometry
▪ Industrial/commercial lighting
▪ Chemical and biochemical analyses
▪ Industrial process control
▪ Medical and environment instrumentation
▪ Infotainment (backlights and video walls)
and monitors
▪ High quality consumer displays and tablets