ISL29028 Ver la hoja de datos (PDF) - Renesas Electronics

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Fabricante

ISL29028

Low Power Ambient Light and Proximity Sensor with Intelligent Interrupt and Sleep Modes

Renesas Electronics 

ISL29028

Typical Circuit

A typical application for the ISL29028 is shown in

Figure 5. The ISL29028’s I2C address is internally

hardwired as 0b100010<x>, with x representing the

logic state of input I2C address pin ADDR0. 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.

(http://www.intersil.com/data/tb/TB477.pdf)

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 ISL29028 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. A 0.1µF and 1µF power supply decoupling

capacitors need to be placed close to the device.

VDD

R1

10k

R2

R3

10k 10k

VIR-LED

VI2C_PULL-UP

I2C MASTER

MICROCONTROLLER

INT

SDA

SCL

C1

1µF

C2

0.1µF

SLAVE_0

1 ADDR0 IRDR 8

2 VDD

3 GND

4 REXT

7

INT

SDA 6

SCL 5

REXT ISL29028

499k

SLAVE_1

SDA

SCL

I2C SLAVE_n

SDA

SCL

FIGURE 5. ISL29028 TYPICAL CIRCUIT

FN6780 Rev 2.00

November 4, 2011

Page 11 of 16

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