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PDF ISL29023 Data sheet ( Hoja de datos )
| Número de pieza | ISL29023 | |
| Descripción | Ntegrated Digital Ambient Light Sensor | |
| Fabricantes | Intersil Corporation | |
| Logotipo |  |
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®
Data Sheet
March 3, 2009
ISL29023
FN6691.0
Integrated Digital Ambient Light Sensor
with Interrupt Function
www.TdahteasISheLe2t940u2.c3omis an integrated ambient and infrared light to
digital converter with I2C (SMBus Compatible) Interface. Its
advanced self-calibrated photodiode array emulates human
eye response with excellent IR rejection. The on-chip ADC is
capable of rejecting 50Hz and 60Hz flicker caused by artificial
light sources. The lux range select feature allows users to
program the lux range for optimized counts/lux.
For ambient light sensing, an internal 16-bit ADC has been
designed based upon the charge-balancing technique. The
ADC conversion time is nominally 90ms and is user
adjustable from 11µs to 90ms, depending on oscillator
frequency and ADC resolution. In normal operation, typical
current consumption is 70µA. In order to further minimize
power consumption, two power-down modes have been
provided. If polling is chosen over continuous measurement
of light, the auto-power-down function shuts down the whole
chip after each ADC conversion for the measurement. The
other power-down mode is controlled by software via the I2C
interface. The power consumption can be reduced to less
than 0.3µA when powered down.
The ISL29023 supports a software and hardware interrupt
that remains asserted until the host clears it through I2C
interface. Function of ADC conversion continues without
stopping after interrupt is asserted.
Designed to operate on supplies from 2.25V to 3.63V with an
I2C supply from 1.7V to 3.63V, the ISL29023 is specified for
operation over the -40°C to +85°C ambient temperature range.
Pinout
ISL29023
(6 LD ODFN)
TOP VIEW
VDD 1
GND 2
REXT 3
6 SDA
5 SCL
4 INT
*EXPOSED PAD CAN BE CONNECTED TO GND OR
ELECTRICALLY ISOLATED
Features
Ambient Light Sensing
• Simple Output Code Directly Proportional to lux
• Variable Conversion Resolution up to 16-bits
• Adjustable Sensitivity up to 65 Counts per lux
• Selectable Range (via I2C)
- Range 1 = 0.015 lux to 1,000 lux
- Range 2 = 0.06 lux to 4,000 lux
- Range 3 = 0.24 lux to 16,000 lux
- Range 4 = 0.96 lux to 64,000 lux
• Integrated 50/60Hz Noise Rejection
• Temperature Compensated
• Works Under Various Light Sources, Including Sunlight
Excellent Spectral Response
• Light Sensor Close to Human Eye Response
- Excellent Light Sensor IR and UV Rejection
Ultra Low Power
• 85μA Max Operating Current
• Software Shutdown and Automatic Shutdown
- 0.3μA Max Shutdown Current
Additional Features
• I2C and SMBus Compatible
• 1.7V to 3.63V Supply for I2C Interface
• 2.25V to 3.63V Sensor Power Supply
• Small Form Factor
- 6 Ld 2.0x2.1x0.7mm ODFN Package
• Pb-Free (RoHS compliant)
Applications
• Display and Keypad Dimming Adjustment for:
- Mobile Devices: Smart Phone, PDA, GPS
- Computing Devices: Notebook PC, Webpad
- Consumer devices: LCD-TV, Digital Picture Frame,
Digital Camera
• Industrial and Medical Light Sensing
1
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.
Copyright © Intersil Americas Inc. 2009. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL29023
I2C DATA START
DEVICE ADDRESS W A REGISTER ADDRESS
STOP START DEVICE ADDRESS
A
DATA BYTE0
I2C SDA
IN
A6 A5 A4 A3 A2 A1 A0 W A R7 R6 R5 R4 R3 R2 R1 R0 A
A6 A5 A4 A3 A2 A1 A0 W A
SDA DRIVEN BY ISL29023
I2C SDA
OUT
SDA DRIVEN BY MASTER
A SDA DRIVEN BY MASTER A
SDA DRIVEN BY MASTER
A D7 D6 D5 D4 D3 D2 D1 D0
www.dIa2CtaCsLhKeet4u.com
12 3456 789123456 789
123 45 67 89123456789
FIGURE 1. I2C READ TIMING DIAGRAM SAMPLE
I2C DATA
I2C SDA IN
I2C SDA OUT
I2C CLK IN
START
DEVICE ADDRESS
W A REGISTER ADDRESS
A FUNCTIONS
A STOP
A6 A5 A4 A3 A2 A1 A0 W A R7 R6 R5 R4 R3 R2 R1 R0 A B7 B6 B5 B4 B3 B2 B1 B0 A
SDA DRIVEN BY MASTER
A SDA DRIVEN BY MASTER A SDA DRIVEN BY MASTER
A
1 234 5 67 8 9 1234 56 7 8 9 12 345 67 89
FIGURE 2. I2C WRITE TIMING DIAGRAM SAMPLE
Register Set
There are eight registers that are available in the ISL29023. Table 1 summarizes their functions.
ADDR
00h
01h
02h
03h
04h
05h
06h
07h
REG NAME
COMMANDI
COMMANDII
DATALSB
DATAMSB
INT_LT_LSB
INT_LT_MSB
INT_HT_LSB
INT_HT_MSB
7
OP2
0
D7
D15
TL7
TL15
TH7
TH15
6
OP1
0
D6
D14
TL6
TL14
TH6
TH14
TABLE 1. REGISTER SET
BIT
5
OP0
4
0
3
0
0 0 RES1
D5 D4
D3
D13 D12
D11
TL5
TL13
TL4
TL12
TL3
TL11
TH5 TH4
TH3
TH13
TH12
TH11
2
FLAG
RES0
D2
D10
TL2
TL10
TH2
TH10
1
PRST1
RANGE1
D1
D9
TL1
TL9
TH1
TH9
0
PRST0
RANGE0
D0
D8
TL0
TL8
TH0
TH8
DEFAULT
00h
00h
00h
00h
00h
00h
FFh
FFh
Command Register I 00(hex)
The first command register has the following functions:
1. Operation Mode: Bits 7, 6, and 5. These three bits
determine the operation mode of the device.
TABLE 2. OPERATION MODE
BITS 7 TO 5
OPERATION
000 Power-down the device
001 ALS once
010 IR once
100 Reserved (Do not use)
101 ALS continuous
110 IR continuous
111 Reserved (Do not use)
5 FN6691.0
March 3, 2009
5 Page 
ISL29023
Package Outline Drawing
L6.2x2.1
6 LEAD OPTICAL DUAL FLAT NO-LEAD PLASTIC PACKAGE (ODFN)
Rev 0, 9/06
www.datasheet4u.com
2.10
A
B
6
PIN 1
INDEX AREA
0.65
6
PIN 1
INDEX AREA
1
1 . 35 1 . 30 REF
(4X) 0.10
(0 . 65)
TOP VIEW
(0 . 65)
(1 . 35)
6X 0 . 30 ± 0 . 05
0 . 65
6X 0 . 35 ± 0 . 05
BOTTOM VIEW
0.10 M C A B
( 6X 0 . 30 )
MAX 0.75
SIDE VIEW
SEE DETAIL "X"
0.10 C
BASE PLANE
C
SEATING PLANE
0.08 C
(1 . 95)
( 6X 0 . 55 )
TYPICAL RECOMMENDED LAND PATTERN
C 0 . 2 REF
5
0 . 00 MIN.
0 . 05 MAX.
DETAIL "X"
NOTES:
1. Dimensions are in millimeters.
Dimensions in ( ) for Reference Only.
2. Dimensioning and tolerancing conform to AMSE Y14.5m-1994.
3. Unless otherwise specified, tolerance : Decimal ± 0.05
4. Dimension b applies to the metallized terminal and is measured
between 0.15mm and 0.30mm from the terminal tip.
5. Tiebar shown (if present) is a non-functional feature.
6. The configuration of the pin #1 identifier is optional, but must be
located within the zone indicated. The pin #1 identifier may be
either a mold or mark feature.
11 FN6691.0
March 3, 2009
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet ISL29023.PDF ] | |
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