412101 Detector Datasheet

412101 Datasheet, PDF, Equivalent


Part Number

412101

Description

Visible Light Detector

Manufacture

Seme LAB

Total Page 11 Pages
Datasheet
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412101
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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
Rss
Vss
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.
Page 1 of 11

412101
412101
Visible Light Detector
2.0 ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply input voltage
Supply current
Operating Temperature, TO
Storage Temperature, TS
RATING
-0.3 to 10
Internally limited
-40C to +85C
-40C to +100C
UNITS
V
mA
°C
°C
3.0 ELECTRICAL SPECIFICATION
The following parameters apply over the operating temperature range –40oC to +85 oC, and
with Rss=10 K-Ohms and Vdd= 5V, as per figure 1.
Parameter
Symbol Test conditions
Min
Infra red response
900nm
Minimum operational voltage Vdd-Vss 250 Lux, Iss= 250uA
100 Lux, Iss= 100uA
Light current
Dark Current
Iss
Idd(dark)
200 Lux
100 Lux
10 Lux
0 Lux, Ta=25oC
0 Lux, Ta=85oC
150
75
7.5
Gain Linearity
-10
Peak spectral response
Sensitive area
Useable light range
Rss & Vdd dependant
1
Typ
1
2.4
1.7
200
100
10
<1
150
520
0.054
Max Units
5 % of peak
V
2V
250 uA
125 uA
12.5 uA
10 nA
200 nA
10 %
nm
mm2
1000
Lux
Note that with a lower Rss resistance, the linear light response range can be greatly
increased – up to 1000 Lux. See graph on page 4.
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 or released to a third
party without prior consent.
Page 2 of
11


Features www.DataSheet4U.com 412101 Visible Ligh t Detector DESCRIPTION The 412101 is a low cost visible light sensor, with a current output which is directly propor tional to the light level. It has a bui lt in optical filter to provide a respo nse which is close to the human eye, or “photopic”. The output current can be converted to a voltage by connectin g it in series with a resistor. The dyn amic range is determined by the externa l resistor and power supply (10K and 5V gives a range of 0 to over 250 Lux, bu t can be up to 1000 Lux with a 1K resis tor). The internal dark current cancell ation enables high accuracy over the fu ll temperature range, even at low light levels. FEATURES • • • • • • Near human eye photopic response Hi gh IR rejection – integrated optical filter Current output highly linear vs light level Temperature stable Integrat ed high gain photo-current amplifier Da rk-current cancellation APPLICATIONS • • • Dawn/dusk sensing Security lighting Display backlighting in laptops, mobil.
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