ISL29021IROZ-T7 Intersil, ISL29021IROZ-T7 Datasheet

ISL29021IROZ-T7

Manufacturer Part Number

ISL29021IROZ-T7

Description

IC SENSOR LIGHT-DGTL I2C 8ODFN

Manufacturer

Intersil

Datasheet

1.ISL29021IROZ-T7.pdf (12 pages)

Specifications of ISL29021IROZ-T7

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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Digital Proximity Sensor with Interrupt

Function

The ISL29021 is an integrated proximity and infrared sensor

with a built-in IR LED driver and I

Compatible). This device provides infrared sensing to allow

proximity estimation featured with interrupt function.

For infrared and proximity sensing, an internal ADC has

been designed based on the charge-balancing A/D

conversion technique.

The ADC is used to digitize the output signal from the

photodiode array when the internal IR LED driver is turned

on and off for the programmed time periods under

user-selected modulation frequency to drive the external IR

LED. As this proximity sensor employs a noise cancellation

scheme to highly reject unwanted IR noise, the digital output

of proximity sensing decreases with distance. The driver

output current is user selectable up to 100mA to drive

different types of IR emitters LEDs.

Four different modes of operation can be selected via the I

interface: programmable IR sensing once, programmable

proximity sensing once, programmable continuous IR sensing

and programmable continuous proximity sensing. The

programmable one-time operation modes greatly reduce power

because an immediate automatic shutdown reduces overall

supply current less than 0.5µA.

The ISL29021 supports both hardware and software

interrupts that remain asserted until the host clears it through

Designed to operate on supplies from 2.5V to 3.63V, the

ISL29021 is specified for operation over the -40°C to +85°C

ambient temperature range. It is packaged in a clear, Pb-free

8 Ld ODFN package.

Ordering Information

ISL29021IROZ-T7*

ISL29021IROZ-EVALZ Evaluation Board

*Please refer to TB347 for details on reel specifications.

NOTE: These Intersil Pb-free plastic packaged products employ

special Pb-free material sets; molding compounds/die attach

materials and NiPdAu plate - e4 termination finish, which is RoHS

compliant and compatible with both SnPb and Pb-free soldering

operations. Intersil Pb-free products are MSL classified at Pb-free

peak reflow temperatures that meet or exceed the Pb-free

requirements of IPC/JEDEC J STD-020.

C interface for proximity detection.

PART NUMBER

(Note)

TEMP. RANGE

-40 to +85

(°C)

C Interface (SMBus

Data Sheet

8 Ld ODFN L8.2.1x2.0

PACKAGE

(Pb-Free)

DWG. #

PKG.

1-888-INTERSIL or 1-888-468-3774

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

Features

Proximity Sensing

• Ambient IR Cancellation During Proximity Sensing

• IR LED Driver with Programmable Source Current

• Programmable LED current Modulation Frequency

• Variable Conversion Resolution up to 16-bits

• Selectable Range (via I

• Works Under Various Light Sources, Including Sunlight

Ideal Spectral Response for Proximity Sensor

• Proximity sensor range from 850nm to 950nm

Ultra Low Power

• 90μA Max Operating Current

• Software Shutdown and Automatic Shutdown

Easy to Use

• I

• No Complex Algorithms Needed

• Temperature Compensated

• Small Form Factor

Additional Features

• I

• 1.7V to 3.63V Supply for I

• 2.25V to 3.63V Sensor Power Supply

• Pb-Free (RoHS compliant)

Applications

• Display and Keypad Proximity Sensing for:

• Industrial and Medical Proximity Sensing

- Works Under Direct Sunlight

- Adjustable Current Drive from 100mA to 12.5mA

- Can use either 850nm or 950nm LED solution

- 0.5μA Max Shutdown Current

- 8 Ld 2.0mmx2.1mmx0.7mm ODFN Package

- Mobile Devices: Smart Phone, PDA, GPS

- Computing Devices: Notebook PC, Webpad

- Consumer Devices: LCD-TV, Digital Picture Frame, Digital

C (SMBus Compatible) Output

C and SMBus Compatible

Camera

All other trademarks mentioned are the property of their respective owners.

March 3, 2009

Intersil (and design) is a registered trademark of Intersil Americas Inc.

C Interface

ISL29021

FN6732.0

Related parts for ISL29021IROZ-T7

ISL29021IROZ-T7 Summary of contents

Page 1

... Ld ODFN package. Ordering Information PART NUMBER TEMP. RANGE (Note) (°C) ISL29021IROZ-T7* -40 to +85 ISL29021IROZ-EVALZ Evaluation Board *Please refer to TB347 for details on reel specifications. NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach materials and NiPdAu plate - e4 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations ...

Page 2

Pinout Pin Descriptions PIN NUMBER PIN NAME 1 VDDD Positive digital supply: 2.5V to 3.63V. 2 VDDA Positive analog supply: 2.5V to 3.63V, VDDA and VDDD should be externally shorted. 3 GND Ground. 4 REXT External resistor pin setting the ...

Page 3

... Thermal Resistance (Typical, Note 1) DD +/- 0. ODFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DDD Maximum Die Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . +90°C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +100°C + 0.5V Operating Temperature . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85° 0.5V Pb-Free Reflow Profile .see link below DD http://www.intersil.com/pbfree/Pb-FreeReflow.asp = 3V +25° 499kΩ 1% tolerance, 16-bit ADC operation, unless otherwise VDDD VDDA A EXT ...

Page 4

Electrical Specifications V SUP ( specified. (Continued) PARAMETER DESCRIPTION I Supply Current of Proximity Sensing SUP (IRLED1) I Supply Current of Proximity Sensing SUP (IRLED2) Duty Cycle Duty Cycle of IR LED Modulation PROX-IR Differential ADC Output of IR and ...

Page 5

An unexpected camera flash, for example, can be ignored by setting the persistency to 8 integration cycles Interface There are eight 8-bit registers available inside the ISL29021. The two command registers define the operation ...

Page 6

Register Set There are eight registers that are available in the ISL29021. Table 1 summarizes their functions. ADDR REG NAME 7 00h COMMANDI OP2 01h COMMANDII 1 02h DATA D7 LSB 03h DATA D15 MSB 04h INT_LT_LSB TL7 05h INT_LT_MSB ...

Page 7

TABLE 7. CURRENT SOURCE CAPABILITY AT IRDR PIN BITS IRDR PIN SOURCE CURRENT 00 12.5mA IR LED driver 01 25mA IR LED driver 10 50mA IR LED driver 11 100mA IR LED driver 4. Resolution: Bits ...

Page 8

... 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 ISL29021 is relatively insensitive to layout. Like other devices intended to provide excellent performance even in significantly noisy environments ...

Page 9

Typical Circuit A typical application for the ISL29021 is shown in Figure 4. 2 The ISL29021’ address is internally hardwired as 1000100. The device can be tied onto a system’ together with other I C compliant ...

Page 10

Typical Performance Curves 1.2 SUN 1.0 0.8 0.6 0.4 0.2 0 300 400 500 600 700 800 WAVELENGTH (nm) FIGURE 5. SPECTRUM OF FOUR LIGHT SOURCES RADIATION PATTERN 0¬ 10¬ 10¬ 20¬ LUMINOSITY 30¬ ANGLE 40¬ 50¬ 60¬ 70¬ 80¬ ...

Page 11

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...

Page 12

Package Outline Drawing L8.2.1x2.0 8 LEAD OPTICAL DUAL FLAT NO-LEAD PLASTIC PACKAGE (ODFN) Rev 0, 10/08 2.10 6 PIN 1 INDEX AREA (2X) 0.10 TOP VIEW (6x0.50) (8x0.20) (8x0.55) (0.75) TYPICAL RECOMMENDED LAND PATTERN 12 ISL29021 A B 0.50 2.00 ...

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