intersil ISL29001 DATA SHEET

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ISL29001

Data Sheet December 21, 2005

Ambient Light Sensor

The ISL29001 is an integrated ambient light sensor with
ADC and I2C interface. With a spectral sensitivity curve
matched to that of the human eye, the ISL29001 provides
15-bit effective resolution while rejecting 50Hz and 60Hz
flicker caused by artificial light sources.

In normal operation, the ISL29001 consumes less than
300µA of supply current. A software power-down mode
controlled via the I

2

C interface disables all but the I2C
interface. A power-down pin is also provided which reduces
power consumption to less than 1µA.

The ISL29001 includes an internal oscillator which provides
100ms automatic integration periods, or can be externally
timed by I

2

C commands. Both the internal timing and the
illuminance resolution can be adjusted with an external
resistor.

Designed to operate on supplies from 2.5V to 3.3V, the
ISL29001 is specified for operation over the -40°C to +85°C
ambient temperature range. It is packaged in a clear 6-pin
ODFN package.

Ordering Information

PAR T

NUMBER PACKAGE TAPE & REEL PKG. DWG. #

ISL29001IROZ
(See Note)

NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100%
matte tin plate termination finish, which are 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.

6-Pin ODFN

(Pb-Free)

- MDP0052

FN6166.0

Features

• Human eye response

• Temperature compensated

• 15-bit effective resolution

• Adjustable resolution: 3 to 15 counts per lux

• Simple output code, directly proportional to lux

• 0.3 lux to 10,000 lux range

• IR rejection

• 50Hz/60Hz rejection

2

C interface

•I

• 2.5V to 3.3V supply

• 6-pin ODFN (2.1mm x 2mm)

• Pb-Free plus anneal available (RoHS compliant)

Applications

• Ambient light sensing

• Ambient backlight control

• Temperature control systems

• Contrast control

• Camera light meters

• Lighting controls

•HVAC

Block Diagram

V

DD

PD

Pinout

VDD

GND

REXT

ISL29001

(6-PIN ODFN)

TOP VIEW

1

THERMAL

2

PAD

3

1

TEMPERATURE
COMPENSATED
LIGHT SENSOR

6

SDA

SCL

5

PD

4

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

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

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

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

Copyright © Intersil Americas Inc. 2005. All Rights Reserved.

50Hz/60Hz

REJECTION

GND

16-bit

ADC

R

EXT

C INTERFACE

2

I

SDA

SCL

ISL29001

Absolute Maximum Ratings (T

Maximum Supply Voltage between V

2

I

C Bus Pin Voltage (SCL, SDA) . . . . . . . . . . . . . . . . . -0.2V to 5.5V

2

I

C Bus Pin Current (SCL, SDA) . . . . . . . . . . . . . . . . . . . . . . <10mA

R

Pin Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.2V to 3.6V

ext

Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . -45°C to +85°C

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests
are at the specified temperature and are pulsed tests, therefore: T

Electrical Specifications V

= 25°C)

A

and GND . . . . . . . . . . 3.6V

DD

= 3V, TA = 25°C, R

DD

specified.

Maximum Die Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . +125°C

Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . -45°C to +100°C

ESD Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2kV

= TC = T

J

A

= 100kΩ, internally controlled integration timing (Note 1), unless otherwise

EXT

PARAMETER DESCRIPTION CONDITION MIN TYP MAX UNIT

V

I

DD

I

DD1

I

DD2

DD

Power Supply Range 2.25 3.63 V

Supply Current 0.28 0.33 mA

Supply Current Software disabled 0.09 0.10 mA

Supply Current PD = 3V 0.5 µA

FUPD Internal Update Time Mode 1 & Mode 2 (Note 2) 85 105 126 ms

Fosc Internal Oscillator Frequency 312 kHz

2

FI

CI

2

C Clock Rate 1 400 kHz

DATA0 ADC Code Ev = 0 lux 1 Counts

DATA1 ADC Code Full scale ADC count value 32768 Counts

DATA2 ADC Code Ev = 300 lux, fluorescent light, Mode 1 738 983 1247 Counts

DATA3 ADC Code Ev = 300 lux, fluorescent light, Mode 2 98 Counts

V

REF

Voltage of R

Pin 0.487 0.51 0.532 V

EXT

NOTES:

1. See Principle of Operation

2. There are three modes of the ADC’s operations. In Mode 1, the ADC integrates the current of the photodiode which is sensitive to visible and
infrared light. In Mode 2, the ADC integrates the current of the photodiode which is sensitive only to infrared light.

Pin Descriptions

PIN NUMBER PIN NAME DESCRIPTION

1 VDD Positive supply. Connect this pin to a clean 2.5V to 3.3V supply.

2 GND Ground pin

3 PD Power-down pin. This pin is active-high. Applying a logic “high” to this pin will put the

4 REXT External resistor pin for ADC reference. Connect this pin to ground through a

5SCLI

6SDAI

2

device into power down mode.

(nominal) 100kΩ resistor.

2

C serial clock

2

C serial data

FN6166.0

December 21, 2005

ISL29001

Typical Performance Curves (Rext = 100kΩ)

320

Ta = 27oC
COMMAND = 00H

306

5000 lux

292

278

200 lux

264

SUPPLY CURRENT (µA)

250

2.0 2.3 2.6 2.9 3.2 3.5 3.8
SUPPLY VOLTAGE (V)

10

Ta = 27oC
COMMAND = 00H

8

0 lux

6

4

2

OUTPUT CODE (COUNTS)

0

2.0 2.3 2.6 2.9 3.2 3.5 3.8
SUPPLY VOLTAGE (V)

FIGURE 1. SUPPLY CURRENT vs SUPPLY VOLTAGE FIGURE 2. OUTPUT CODE FOR 0 LUX vs SUPPLY VOLTAGE

1.015

1.010

1.005

1.000

(% FROM 3V)

0.995

OUTPUT CODE RATIO

0.990

2.0 2.3 2.6 2.9 3.2 3.5 3.8

200 lux

SUPPLY VOLTAGE (V)

COMMAND = 00H

5000 lux

Ta = 27oC

320.0

319.5

319.0

318.5

318.0

OSCILLATOR FREQUENCY (kHz)

2.0 2.3 2.6 2.9 3.2 3.5 3.8
SUPPLY VOLTAGE (V)

Ta = 27oC

FIGURE 3. OUTPUT CODE vs SUPPLY VOLTAGE FIGURE 4. OSCILLATOR FREQUENCY vs SUPPLY VOLTAGE

315

Vdd = 3V
COMMAND = 00H

305

295

285

275

SUPPLY CURRENT (µA)

265

-60 -20 20 60 100

5000 lux

200 lux

TEMPERATURE (oC)

10

Vdd = 3V
COMMAND = 00H

8

0 lux

6

4

2

OUTPUT CODE (COUNTS)

0

-60 -20 20 60 100
TEMPERATURE (oC)

FIGURE 5. SUPPLY CURRENT vs TEMPERATURE FIGURE 6. OUTPUT CODE FOR 0 LUX vs TEMPERATURE

3

December 21, 2005

FN6166.0

ISL29001

Typical Performance Curves (Rext = 100kΩ) (Continued)

C)

o

1.080

1.048

1.016

Vdd = 3V
COMMAND = 00H

5000 lux

330

Vdd = 3V

329

328

200 lux

0.984

(% FROM 25

0.952

327

326

OUTPUT CODE RATIO

0.920

-60 -20 20 60 100
TEMPERATURE (oC)

325

OSCILLATOR FREQUENCY (kHz)

-60 -20 20 60 100
TEMPERATURE (oC)

FIGURE 7. OUTPUT CODE vs TEMPERATURE FIGURE 8. OSCILLATOR FREQUENCY vs TEMPERATURE

100

75

Diode 1

RADIATION PATTER N

LUMINOSITY

ANG LE

50

25

RELATIVE SENSITIVITY (%)

0

428

444

460

476

492

508

524

540

556

572

588

604

620

636

652

668

SPECTRAL WAVELENGTH (nm)

RELATIVE SENSITIVITY

FIGURE 9. RELATIVE SENSITIVITY FIGURE 10. RADIATION PATTERN

4

FN6166.0

December 21, 2005