ISL29012 Datasheet, PDF (10/15 Pages) Intersil Corporation – Light-to-Digital Output Sensor with High Sensitivity, Gain Selection, Interrupt Function and I2C Bus™

D_LENS
ISL29012
D₂ > 1.5mm
LIGHT PIPE
t
L
D₂
D_LENS
ISL29012
FIGURE 5. WINDOW WITH LIGHT GUIDE/PIPE
Suggested PCB Footprint
It is important that the users check the “Surface Mount
Assembly Guidelines for Optical Dual FlatPack No Lead
(ODFN) Package” before starting ODFN product board
mounting.
http://www.intersil.com/data/tb/TB477.pdf
Layout Considerations
The ISL29012 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 one 0.01µF power-supply decoupling
capacitor, placed close to the device.
Typical Circuit
A typical application for the ISL29012 is shown in Figure 6.
The ISL29012’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.
10
FN6476.1
December 10, 2008