ISL29028IROZ-T7 Intersil, ISL29028IROZ-T7 Datasheet

ISL29028IROZ-T7

Manufacturer Part Number

ISL29028IROZ-T7

Description

IC SENSOR LIGHT-PROXIMITY 8ODFN

Manufacturer

Intersil

Datasheet

1.ISL29028IROZ-T7.pdf (15 pages)

Specifications of ISL29028IROZ-T7

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Available stocks

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Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

ISL29028IROZ-T7

Manufacturer:

INTERSIL

Quantity:

20 000

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Low Power Ambient Light and Proximity Sensor

with Intelligent Interrupt and Sleep Modes

ISL29028

The ISL29028 is an integrated ambient and infrared

light-to-digital converter with a built-in IR LED driver

and I

two independent ADCs for concurrently measuring

ambient light and proximity in parallel. The flexible

interrupt scheme is designed for minimal

microcontroller utilization.

For ambient light sensor (ALS) data conversions, an ADC

converts photodiode current (with a light sensitivity

range up to 2000 Lux) in 100ms per sample. The ADC

rejects 50Hz/60Hz flicker noise caused by artificial light

sources.

For proximity sensor (Prox) data conversions, the built-in

driver turns on an external infrared LED and the

proximity sensor ADC converts the reflected IR intensity

to digital. This ADC rejects ambient IR noise (such as

sunlight) and has a 540μs conversion time.

The ISL29028 provides low power operation of ALS and

proximity sensing with a typical 138μA normal operation

current (110μA for sensors and internal circuitry, ~28μA

for external LED) with 220mA current pulses for a net

100μs, repeating every 800ms (or under).

The ISL29028 uses both a hardware pin and software

bits to indicate an interrupt event has occurred. An ALS

interrupt is defined as a measurement which is outside a

set window. A proximity interrupt is defined as a

measurement over a threshold limit. The user may also

require that both ALS/prox interrupts occur at once, up

to 16 times in a row before activating the interrupt pin.

The ISL29028 is designed to operate from 2.25V to

3.63V over the -40°C to +85°C ambient temperature

range. It is packaged in a clear, lead-free 8 lead ODFN

package.

Pin Configuration

March 2, 2010

FN6780.1

C Interface (SMBus Compatible). This device uses

*THERMAL PAD CAN BE CONNECTED TO GND OR

ELECTRICALLY ISOLATED

ADDR0

REXT

GND

VDD

8 LD ODFN (2.0

TOP VIEW

THERMAL

ISL29028

PAD

2.1

0.7

IRDR

INT

SDA

SCL

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

)

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

C Bus is a registered trademark owned by NXP Semiconductors Netherlands, B.V.

Features

• Works Under All Light Sources Including Sunlight

• Dual ADCs Measure ALS/Prox Concurrently

• Intelligent Interrupt Scheme Simplifies μC Code

Ambient Light Sensing

• Simple Output Code Directly Proportional to lux

• 50Hz/60Hz Flicker Noise and IR Rejection

• Light Sensor Close to Human Eye Response

• Selectable 125/2000 Lux Range

Proximity Sensing

• Proximity Sensor with Broad IR Spectrum

• IR LED Driver with I

• Ambient IR Noise Cancellation (Including Sunlight)

Intelligent and Flexible Interrupts

• Independent ALS/Prox Interrupt Thresholds

• Adjustable Interrupt Persistency

Ultra Low Power

• 138μA DC Typical Supply Current for ALS/Prox Sensing

• <1.0μA Supply Current When Powered Down

Easy to Use

• Set Registers; Wait for Interrupt

• I

• Temperature Compensated

• Tiny ODFN8 2.0x2.1x0.7 (mm) Package

Additional Features

• 1.7V to 3.63V Supply for I

• 2.25V to 3.63V Sensor Power Supply

• Pb-Free (RoHS compliant)

• I

Applications*

• Display and Keypad Dimming Adjustment and

• Industrial and Medical Light and Proximity Sensing

- Can Use 850nm and 950nm External IR LEDs

- Net 100μs Pulse with 110mA or 220mA Amplitudes

- Periodic Sleep Time up to 800ms Between Pulses

- 1/4/8/16 Consecutive Triggers Required Before

- 110μA for Sensors and Internal Circuitry

- 28μA Typical Current for External IR LED (Assuming

Proximity Sensing for:

- Mobile Devices: Smart Phone, PDA, GPS

- Computing Devices: Laptop PC, Netbook

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

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

Interrupt

220mA for 100μs Every 800ms)

C (SMBus Compatible) Output

C Address Selection Pin

Digital Camera

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

C Programmable Sink Currents

(see page 14)

C Interface

Related parts for ISL29028IROZ-T7

ISL29028IROZ-T7 Summary of contents

Page 1

... Industrial and Medical Light and Proximity Sensing CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. | 1-888-INTERSIL or 1-888-468-3774 Intersil (and design registered trademark of Intersil Americas Inc Bus is a registered trademark owned by NXP Semiconductors Netherlands, B.V. All other trademarks mentioned are the property of their respective owners. ...

Page 2

... Ordering Information PART NUMBER (Notes 1, 2) ISL29028IROZ-T7 NOTES: 1. Please refer to TB347 for details on reel specifications. 2. 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 3

... A Thermal Resistance (Typical, Note ODFN Maximum Die Temperature . . . . . . . . . . . . . . . . . . . +90°C Storage Temperature . . . . . . . . . . . . . . . . -40°C to +100°C Operating Temperature . . . . . . . . . . . . . . . -40°C to +85°C Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp = 3.0V +25° 499kΩ 1% tolerance EXT V Rising Edge between 0.4V and 2.25V DD ALS_EN = 0 ...

Page 4

Electrical Specifications V PARAMETER DESCRIPTION V Acceptable Voltage Range on IRDR Pin IRDR t Net I On Time Per PROX Reading PULSE IRDR V Voltage of R Pin REF EXT Clock Rate Range I C ...

Page 5

I2C Electrical Specifications PARAMETER DESCRIPTION t Bus Free Time Between a STOP and START BUF Condition C Capacitive Load for Each Bus Line b R SDA and SCL system bus pull-up resistor pull-up t Data Valid Time VD;DAT t Data ...

Page 6

Register Map There are ten 8-bit registers accessible via I Registers 0x3 through 0x7 store the various ALS/IR/Prox thresholds which trigger interrupt events. Registers 0x8 through 0xA store the results of ALS/IR/Prox ADC conversions. TABLE 1. ISL29028 REGISTERS AND REGISTER ...

Page 7

TABLE 4. REGISTER 0x02 (INTERRUPT) - PROX/ALS INTERRUPT CONTROL BIT # ACCESS DEFAULT BIT NAME PROX_FLAG 7 FLAG 0x00 (Prox Flag) PROX_PRST 6:5 RW 0x00 (Prox Persist) Unused 4 RW 0x00 (Write 0) ALS_FLAG 3 FLAG 0x00 (ALS FLAG) ALS_PRST ...

Page 8

TABLE 10. REGISTER 0x08 (PROX_DATA) - PROXIMITY SENSOR DATA BIT # ACCESS DEFAULT 7:0 RO 0x00 TABLE 11. REGISTER 0x09 (ALSIR_DT1) - ALS/IR SENSOR DATA (LOWER 8 BITS) BIT # ACCESS DEFAULT 7:0 RO 0x00 TABLE 12. REGISTER 0x0A (ALSIR_DT2) ...

Page 9

ALS ACTIVE PROX SENSOR ACTIVE IRDR (CURRENT DRIVER) FIGURE 3. TIMING DIAGRAM FOR PROX/ALS EVENTS - NOT TO SCALE The proximity sensor is an 8-bit ADC which operates in a similar fashion. When proximity sensing is enabled, the IRDR pin ...

Page 10

... Upon power-up, please ensure a V 0.5V/ms or greater. After power-up the user’s power supply temporarily deviates from our specification (2.25V to 3.63V), Intersil recommends the user write 0x00 to three registers: 0x0E, 0x0F, and 0x01 (in that order), wait ~1ms or more and then rewrite all registers to the desired values ...

Page 11

... 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 SLAVE_0 1 ADDR0 IRDR 2 VDD C1 C2 1µF 0.1µF 3 GND SDA 4 REXT REXT ISL29028 499kΩ ...

Page 12

Typical Performance Curves 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 -90 -60 -30 0 ANGULAR OFFSET (°) FIGURE 8. ANGULAR SENSITIVITY 300 18% GREY CARD 250 220mA MODE 200 110mA MODE 150 100 WHITE COPY PAPER ...

Page 13

Typical Performance Curves FIGURE 14. STABILITY OF ALS COUNT OVER-TEMPERATURE (AT 0.00 LUX) 2.00 0.43 FIGURE 15 ODFN SENSOR LOCATION OUTLINE - DIMENSIONS ISL29028 V = 3.0V EXT ...

Page 14

... 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. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries ...

Page 15

Package Outline Drawing L8.2.1x2.0 8 LEAD OPTICAL DUAL FLAT NO-LEAD PLASTIC PACKAGE (ODFN) Rev 1, 12/09 2.10 6 PIN 1 INDEX AREA (2X) 0.10 TOP VIEW 2.50 2.10 (6x0.50) (8x0.20) (8x0.55) (0.75) TYPICAL RECOMMENDED LAND PATTERN 15 ISL29028 A B ...

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