412101 Datasheet, PDF (1/11 Pages) Seme LAB – Visible Light Detector

412101
Visible Light Detector
DESCRIPTION
The 412101 is a low cost visible light
sensor, with a current output which is
directly proportional to the light level. It
has a built in optical filter to provide a
response which is close to the human
eye, or “photopic”.
The output current can be converted
to a voltage by connecting it in series
with a resistor. The dynamic range is
determined by the external resistor and
power supply (10K and 5V gives a
range of 0 to over 250 Lux, but can be
up to 1000 Lux with a 1K resistor). The
internal dark current cancellation
enables high accuracy over the full
temperature range, even at low light
levels.
FEATURES
• Near human eye photopic response
• High IR rejection – integrated optical filter
• Current output highly linear vs light level
• Temperature stable
• Integrated high gain photo-current amplifier
• Dark-current cancellation
APPLICATIONS
• Dawn/dusk sensing
• Security lighting
• Display backlighting in laptops, mobile phones,
LCD TVs
• Night-lights
1.0 Basic application & test circuit
Figure 1
Vdd
412101
Vss
Rss
The 412101 is supplied as probed
wafers. Failing die are marked with
a black ink-dot.
Pin Description
Vdd – Positive terminal
Vss – Negative terminal
Preliminary Datasheet
REVISION A
This document is the property of Semefab (Scotland) Ltd and is furnished in confidence
and upon the condition that it is neither copied nor released to a third party without prior
consent.
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