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ISL29003IROZ-T7 数据表(PDF) 11 Page - Intersil Corporation

部件名 ISL29003IROZ-T7
功能描述  Light-to-Digital Output Sensor with High Sensitivity, Gain Selection, Interrupt Function and I2C Interface
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制造商  INTERSIL [Intersil Corporation]
网页  http://www.intersil.com/cda/home
标志 INTERSIL - Intersil Corporation

ISL29003IROZ-T7 数据表(HTML) 11 Page - Intersil Corporation

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11
FN7464.6
November 17, 2011
Suggested PCB Footprint
Footprint pads should be a nominal 1-to-1 correspondence
with package pads. Since ambient light sensor devices do
not dissipate high power, heat dissipation through the
exposed pad is not important; instead, similar to DFN or
QFN, the exposed pad provides robustness in board mount
process. Intersil recommends mounting the exposed pad to
the PCB, but this is not mandatory.
Layout Considerations
The ISL29003 is relatively insensitive to layout. Like other
I2C devices, it is intended to provide excellent performance
even in significantly noisy environments. There are only a
few considerations that will ensure best performance.
Route the supply and I2C traces as far as possible from all
sources of noise. Use two power-supply decoupling
capacitors, 4.7µF and 0.1µF, placed close to the device.
Typical Circuit
A typical application for the ISL29003 is shown in Figure 6.
The ISL29003’s I2C address is internally hardwired as
1000100. The device can be tied onto a system’s I2C bus
together with other I2C compliant devices.
Soldering Considerations
Convection heating is recommended for reflow soldering;
direct-infrared heating is not recommended. The plastic
ODFN package does not require a custom reflow soldering
profile, and is qualified to +260°C. A standard reflow
soldering profile with a +260°C maximum is recommended.
TABLE 16. RECOMMENDED DIMENSIONS FOR A FLAT
WINDOW DESIGN
DTOTAL
D1
DLENS @ 35°
VIEWING ANGLE
DLENS @ 45°
VIEWING ANGLE
1.5
0.50
2.25
3.75
2.0
1.00
3.00
4.75
2.5
1.50
3.75
5.75
3.0
2.00
4.30
6.75
3.5
2.50
5.00
7.75
t = 1
Thickness of lens
D1
Distance between ISL29001 and inner edge of lens
DLENS
Diameter of lens
DTOTAL
Distance constraint between the ISL29001 and lens
outer edge
*All dimensions are in mm.
6
5
4
0.56mm
0.46mm
2.00mm
1
2
3
0.29mm
2.10mm
FIGURE 5. SENSOR LOCATION DRAWING
FIGURE 6. ISL29003 TYPICAL CIRCUIT
VDD
1
GND
2
REXT
3
INT
4
SCL
5
SDA
6
ISL29003
R1
10k
R2
10k
R3
RES1
REXT
100k
C2
0.1µF
C1
4.7µF
2.5V TO 3.3V
1.8V TO 5.5V
MICROCONTROLLER
SDA
SCL
I2C SLAVE_0
I2C SLAVE_1
I2C SLAVE_n
I2C MASTER
SCL
SDA
SCL
SDA
ISL29003


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