isl29102 Intersil Corporation, isl29102 Datasheet - Page 6

• Manufacturer Part Number: isl29102
• Description: Low Power Ambient Light-to-voltage Non-linear Converter
• Manufacturer: Intersil Corporation

Application Information
Light-to-Voltage Conversion
The ISL29102 has responsiveness that is a square-root
function of the light intensity intercepted by the photodiode in
lux. Because the photodiode has a responsivity that
resembles the human eye, conversion rate is independent of
the light source (fluorescent light, incandescent light or direct
sunlight).
In Equation 1, V
intensity and R
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notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
V
OUT
=
---------------------- - E
2.00mm
1.8μA
100lux
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
EXT
OUT
is the value of the external resistor. The
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
×
is the output voltage, E is the light
R
For information regarding Intersil Corporation and its products, see www.intersil.com
EXT
0.19mm
6
FIGURE 18. 6 LD ODFN SENSOR LOCATION OUTLINE
(EQ. 1)
ISL29102
2.10mm
R
compliance of the ISL29102's output circuit may result in
premature saturation when an excessively large R
used. The output compliance voltage is 700mV below the
supply voltage as listed in V
Specifications” table on page 2.
Optical Sensor Location Outline
The green area in Figure 18 shows the optical sensor
location outline of ISL29102. Along the pin-out direction, the
center line (CL) of the sensor coincides with that of the
packaging. The sensor width in this direction is 0.39mm.
Perpendicular to the pin-out direction, the CL of the sensor
has an 0.19mm offset from the CL of packaging away from
pin-1. The sensor width in this direction is 0.46mm.
EXT
is used to set the light-to-voltage scaling constant. The
0.39mm
O-MAX
of the “Electrical
0.46mm
EXT
July 1, 2008
FN6483.0
is