IC-LO datasheet(2/25 Pages) ICHAUS

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iC-LO

TRIANGULATION SENSOR

Rev B3, Page 2/25

DESCRIPTION

iC-LO is suitable for the assembly of diffuse reflec-

tive photoelectric sensors based on the principle of

triangulation. Besides iC-LO, all that is required to

create such a setup is a transmitting LED, a low-cost

microcontroller, and a driver device for the switching

output.

The iC contains a photodiode array, consisting of one

near diode, 127 middle diodes, and one far diode.

The diode photocurrents are segmented on two AC

amplifiers (near and far channel). The AC amplifiers

ensures a very good suppression of low-frequency

interference. The sum and difference are calculated

from the output voltages of the amplifiers; these are

evaluated by comparators. From the comparator sig-

nals a programmable filter for the evaluation of multi-

ple measurements generates the switching signal for

the light sensor and also a warning on weak received

light. The gain characteristic is dynamically adjusted

to the intensity of the received light and becomes a

logarithmic characteristic with very powerful input sig-

nals (reflective objects). This results in a very high

dynamic range. The integrated low side driver can

drive an LED directly or control an external driver by

CMOS output.

iC-LO is configured using an SPI interface. The inter-

nal registers can be protected against overwriting.

IC-LO 데이터시트(PDF) 2 Page - IC-Haus GmbH