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db12348e_V3.11_preliminary_2017-07-06

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AS89010

V3.11

Figure 20 shows the schematic of an application specific board with a 4 channel sensor (e.g. Color Sensor

MTCSiCF of ams Sensors Germany but all statements are also valid for other similar sensors with current

output), AS89010 and environment of electronics e.g. power supply. Please make sure that all specified

components are operated in the application circuit according to their working range. For example, color

sensor (input current) and voltage regulators (workspace load current, separated analog and digital OR

decoupled power supplies base on a common regulator) are selected and to be operated according to the

parameters in the data sheet. Otherwise problems, noise or deviations can occur during operation.

Figure 20: Schematic of reference design

Note, X Y Z pins are the True Color Sensor signals, cathode is the common connector and TrD is an added-

isolation diode to split up the potential of the 3 functional PIN diodes XYZ. It has to be connected to the

same potential as the functional diodes - at IN3 of AS89010.

It is important to shield the single pin diodes for XYZ detection to minimize cross-talk among the 3 filtered

areas/diodes.

The next figures show principle steps of programming the command and continuous measurement mode

for SYNS and SYND Mode. Please note in configuration state the modifications for RAM must be adapted

specific to your application by parameters described in this data sheet.