ISL29028AIROZ-T7 Intersil, ISL29028AIROZ-T7 Datasheet - Page 11

• Manufacturer Part Number: ISL29028AIROZ-T7
• Description: IC SENSOR LIGHT-PROXIMITY 8ODFN
• Manufacturer: Intersil

Specifications of ISL29028AIROZ-T7

• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Typical Circuit
A typical application for the ISL29028A is shown in Figure 5. The
ISL29028A’s I
0b100010<x>, with x representing the logic state of input I
address pin ADDR0. The device can be tied onto a system’s I
bus together with other I
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.
C1
1µF
V
DD
2
C2
0.1µF
C address is internally hardwired as
2
REXT
499kΩ
C compliant devices.
1
2
3
4
11
ADDR0
VDD
GND
REXT
SLAVE_0
ISL29028A
IRDR
SDA
SCL
INT
V
IR-LED
8
7
6
5
FIGURE 5. ISL29028A TYPICAL CIRCUIT
10kΩ
R1
ISL29028A
2
C
2
R2
10kΩ
C
SLAVE_1
SDA
SCL
Suggested PCB Footprint
It is important that 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 ISL29028A is relatively insensitive to layout. Like other I
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 I
noise. A 0.1µF and 1µF power supply decoupling capacitors need to be
placed close to the device.
ALS Sensor Window Layout
Special care should be taken to ensure that the sensor, as
outlined in the sensor location outline, is uniformly illuminated.
Shadows that result from off angle window openings that affect
that uniform illumination can affect the measurement results.
R3
10kΩ
V
I2C_PULL-UP
I
2
C SLAVE_n
2
C traces as far as possible from all sources of
SDA
SCL
MICROCONTROLLER
INT
SDA
SCL
I
2
C MASTER
March 24, 2011
FN7721.2
2
C