ISL29004 Datasheet, PDF (13/17 Pages) Intersil Corporation – Light-to-Digital Output Sensor with Address Selection, High Sensitivity, Gain Selection, Interrupt Function and I2C Interface

ISL29004
Dimensions in mm
FIGURE 6. SUGGESTED PCB FOOTPRINT
Suggested PCB Footprint
Footprint pads should be a nominal 1-to-1 correspondence
with package pads. The large exposed central die-mounting
paddle in the center of the package has no electrical
connection. It is, however, recommended to have the
thermal pad soldered to GND for package reliability.
Layout Considerations
The ISL29004 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 ISL29004 is shown in Figure 7.
Additional I²C address select pins A0 and A1 are available
for the ISL29004 so a maximum of four ISL29004 devices
can be tied on the same I²C bus line.
Soldering Considerations
Convection heating is recommended for reflow soldering;
direct-infrared heating is not recommended. The ISL29004’s
plastic ODFN package does not require a custom reflow
soldering profile, and is qualified up to +260°C. A standard
reflow soldering profile with a +260°C maximum is
recommended.
Special Handling
ODFN8 is rated as JEDEC moisture level 4. Standard
JEDEC Level 4 procedure should be followed: 72hr floor life
at less than +30°C 60% RH. When baking the device, the
temperature required is +110°C or less due to its special
molding compound.
I2C MASTER
MICROCONTROLLER
SDA
SCL
VDD
C1
0.1uF
REXT1
100K
R1
10K
R2
10K
I2C SLAVE_44
1 _VDD
SDA ⁸
2 _GND
SCL ⁷
3 _REXT
INT ⁶
4 _A0
A1 ⁵
ISL29004
C2
0.1uF
VDD I2C SLAVE_45
1 _VDD
SDA ⁸
2 _GND
SCL ⁷
REXT2
100K
3 _REXT
4 _A0
INT ⁶
A1 ⁵
ISL29004
VDD I2C SLAVE_46
C3
1 _VDD
SDA ⁸
0.1uF
2 _GND
SCL ⁷
REXT3
RES1
3 _REXT
4 _A0
INT ⁶
A1 ⁵
ISL29004
FIGURE 7. ISL29004 TYPICAL CIRCUIT
VDD I2C SLAVE_47
C4
1 _VDD
SDA ⁸
0.1uF
2 _GND
SCL ⁷
REXT4
RES1
3 _REXT
4 _A0
INT ⁶
A1 ⁵
ISL29004
13
FN6221.0
December 21, 2006