ISL29002
Pin Descriptions
PIN NUMBER
1
2
3
PIN NAME
VDD
GND
R EXT
DESCRIPTION
Positive supply. Connect to a clean 2.25V to 3.3V supply
Ground. The thermal pad is connected to the GND pin
External resistor pin is for the ADC reference current, the integration time adjustment in internal timing
mode, and lux range/resolution adjustment. 100k Ω 1% tolerance resistor recommended.
4
5
6
7
8
A0
A1
A2
SCL
SDA
Bit 0 of the I 2 C address.
Bit 1 of the I 2 C address.
Bit 2 of the I 2 C address.
I 2 C serial clock line
I 2 C serial data line
The address pins have an open gate equivalent circuit. These are the
least-significant bits of the I 2 C address. The eight possible addresses are
40(hex) through 48(hex).
The I 2 C bus lines can pulled above V DD , 5.5V max.
Typical Performance Curves
R EXT = 100k Ω
T T a A = 27 o C
T T a A = 27 o C
COMMAND = 00H
0 lux
320
306
= +27°C
=
COMMAND = 00H
10
8
= +27°C
COMMAND = 00H
0 lux
25000 lux
292
278
264
1000 lux
6
4
2
250
2.0
2.3
2.6
2.9
3.2
3.5
3.8
0
2.0
2.3
2.6
2.9
3.2
3.5
3.8
SUPPLY VOLTAGE (V)
FIGURE 1. SUPPLY CURRENT vs SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
FIGURE 2. OUTPUT CODE FOR 0LUX vs SUPPLY VOLTAGE
T A = +27°C = 27 C
T a
T = +27°C
1.015
o
320.0
a
COMMAND = 00H
1.010
25000 lux
319.5
1.005
319.0
1.000
0.995
1000 lux
318.5
0.990
2.0
2.3
2.6
2.9
3.2
3.5
3.8
318.0
2.0
2.3
2.6
2.9
3.2
3.5
3.8
SUPPLY VOLTAGE (V)
FIGURE 3. OUTPUT CODE vs SUPPLY VOLTAGE
3
SUPPLY VOLTAGE (V)
FIGURE 4. OSCILLATOR FREQUENCY vs SUPPLY VOLTAGE
FN7465.2
December 1, 2006
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