ISL29033IROZ-EVALZ [RENESAS]
Ultra-Low Lux, Low Power, Integrated Digital Ambient Light Sensor with Interrupt Function;
| 型号： | ISL29033IROZ-EVALZ |
| 厂家： | 
RENESAS TECHNOLOGY CORP |
| 描述： | Ultra-Low Lux, Low Power, Integrated Digital Ambient Light Sensor with Interrupt Function |
| 文件： | 总15页 (文件大小：771K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
DATASHEET
ISL29033
FN7656
Rev 5.00
September 28, 2016
Ultra-Low Lux, Low Power, Integrated Digital Ambient Light Sensor with Interrupt
Function
The ISL29033 is an integrated ambient and infrared
light-to-digital converter with I C (SMBus Compatible)
Features
2
• Ambient light sensing
interface. Its advanced, self-calibrated photodiode array
emulates human eye response with excellent IR rejection. The
on-chip 16-bit 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. Power consumption can be reduced to less than
0.3µA when powered down.
• Simple output code directly proportional to lux
• Variable conversion resolution up to 16 bits
• Adjustable sensitivity up to 520 counts per lux
• Measurement range: 0.0019 to 8,000lux with four
selectable ranges
The ISL29033 supports a software and hardware interrupt that
remains asserted until the host clears it through the I C
interface. The function of ADC conversion continues without
stopping after interrupt is asserted.
• Program interrupt feature
2
• Light sensor close to human eye response
- Excellent light sensor IR and UV rejection
• 75μA maximum operating current
- 0.3μA maximum shutdown current
Designed to operate on supplies from 2.25V to 3.63V with an
I C supply from 1.7V to 3.63V, the ISL29033 is specified for
2
operation across the -40°C to +85°C ambient temperature
range.
• 6 Ld 2.0mmx2.1mmx0.7mm ODFN package
Applications
• Display and keypad dimming adjustment for:
- Mobile devices: smart phone, PDA, GPS
- Computing devices: notebook PC, webpad
Related Literature
• For a full list of related documents, visit our web page
- ISL29033 product page
- Consumer devices: LCD-TV, digital picture frame, digital
camera
• Industrial and medical light sensing
V
DD
1
COMMAND
REGISTER
PHOTODIODE
ARRAY
INTEGRATION
LIGHT
DATA
ADC
REGISTER
DATA
PROCESS
5
6
SCL
SDA
2
I C/SMBus
IREF
INTERRUPT
REGISTER
f
OSC
3
2
4
REXT
GND
INT
FIGURE 1. BLOCK DIAGRAM
FN7656 Rev 5.00
Page 1 of 15
September 28, 2016
ISL29033
Pin Configuration
Pin Descriptions
ISL29033
PIN
(6 LD ODFN)
TOP VIEW
NUMBER PIN NAME
DESCRIPTION
PD
1
PD
Thermal Pad (connect to GND, or float)
Positive supply: 2.25V to 3.63V
Ground
VDD
GND
REXT
VDD
SDA
SCL
INT
1
2
3
6
5
4
2
GND
3
External resistor pin for ADC reference; connect
this pin to ground through a (nominal) 499kΩ
resistor.
PD*
REXT
4
INT
Interrupt pin: low for interrupt alarming. INT pin
is open-drain. INT remains asserted until the
interrupt flag status bit is reset.
*EXPOSED PAD CAN BE CONNECTED TO GND OR
ELECTRICALLY ISOLATED
2
5
6
SCL
SDA
I C serial clock
2
I C serial data
Ordering Information
PART NUMBER
(Notes 1, 2, 3, 4)
TEMP. RANGE
(°C)
TAPE AND REEL
(UNITS)
PACKAGE
(RoHS COMPLIANT)
PKG.
DWG. #
ISL29033IROZ-T7
-40 to +85
3k
6 Ld ODFN
L6.2x2.1
ISL29033IROZ-EVALZ
NOTES:
Evaluation Board
1. 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. 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.
3. For Moisture Sensitivity Level (MSL), see device information page for ISL29033. For more information on MSL, see Tech Brief TB477.
4. The part marking is located on the bottom of the part.
FN7656 Rev 5.00
Page 2 of 15
September 28, 2016
ISL29033
Absolute Maximum Ratings (T = +25°C)
Thermal Information
A
VDD Supply Voltage between VDD and GND. . . . . . . . . . . . . . . . . . . . . .4.0V
Thermal Resistance (Typical)
(°C/W)
88
JA
2
I C Bus Pin Voltage (SCL, SDA). . . . . . . . . . . . . . . . . . . . . . . . . -0.2V to 4.0V
6 Ld ODFN (Note 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
I C Bus Pin Current (SCL, SDA). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <10mA
Maximum Die Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+90°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +100°C
Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C
Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see TB477
R
Pin Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.2V to VDD + 0.5V
EXT
INT Pin Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to VDD + 0.5V
INT Pin Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <10mA
ESD Rating
Human Body Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3kV
Recommended Operating Conditions
Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.25V to 3.63V
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product
reliability and result in failures not covered by warranty.
NOTE:
5. is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
JA
Brief TB477.
Electrical Specifications
V
= 3.0V, T = +25°C, R
= 499kΩ 1% tolerance, 16-bit ADC operation, unless otherwise specified.
EXT
DD
A
MIN
MAX
PARAMETER
DESCRIPTION
Power Supply Range
TEST CONDITIONS
(Note 6)
TYP
(Note 6)
UNIT
V
V
2.25
3.63
75
DD
I
Supply Current
65
µA
µA
V
DD
I
Supply Current when Powered Down
Software disabled or auto power-down
16-bit ADC data
0.01
0.3
DD1
2
V
Supply Voltage Range for I C Interface
1.70
600
3.63
740
I2C
f
Internal Oscillator Frequency
670
100
kHz
ms
kHz
OSC
t
ADC Integration/Conversion Time
INT
2
F
I C Clock Rate Range
1 to
400
I2C
DATA_0
DATA_F
Count Output when Dark
Full Scale ADC Code
E = 0 lux, Range 1 (125 lux)
Ambient light sensing
1
5
Counts
65535 Counts
%
ΔDATA
DATA
Count Output Variation Over Three Light
Sources: Fluorescent, Incandescent and
Sunlight
±10
DATA_1
DATA_2
Light Count Output with LSB of
0.0019 lux/Count
E = 37.5 lux, fluorescent light (Note 7),
ambient light sensing, Range 1 (125 lux)
16000
20000
5000
1250
312
24000 Counts
Counts
Light Count Output with LSB of
0.0075 lux/Count
E = 37.5 lux, fluorescent light (Note 7),
ambient light sensing, Range 2 (500 lux)
DATA_3
Light Count Output with LSB of 0.03 lux/Count E = 37.5 lux, fluorescent light (Note 7),
ambient light sensing, Range 3 (2k lux)
Counts
DATA_4
Light Count Output with LSB of 0.12 lux/Count E = 37.5 lux, fluorescent light (Note 7),
ambient light sensing, Range 4 (8k lux)
Counts
DATA_IR1
DATA_IR2
DATA_IR3
DATA_IR4
Infrared Count Output
Infrared Count Output
Infrared Count Output
Infrared Count Output
E = 20 lux solar light (Note 8),
ambient light sensing, Range 1 (125 lux)
16000
20000
5000
1250
312
24000 Counts
Counts
E = 20 lux solar light (Note 8),
ambient light sensing, Range 2 (500 lux)
E = 20 lux solar light (Note 8),
ambient light sensing, Range 3 (2000 lux)
Counts
E = 20 lux solar light (Note 8),
Counts
ambient light sensing, Range 4 (8000 lux)
FN7656 Rev 5.00
Page 3 of 15
September 28, 2016
ISL29033
Electrical Specifications
V
= 3.0V, T = +25°C, R
= 499kΩ 1% tolerance, 16-bit ADC operation, unless otherwise specified.
EXT
DD
A
(Continued)
MIN
MAX
PARAMETER
DESCRIPTION
Pin
EXT
TEST CONDITIONS
(Note 6)
TYP
(Note 6)
UNIT
V
V
Voltage of R
0.52
REF
V
SCL and SDA Input Low Voltage
SCL and SDA Input High Voltage
SDA Current Sinking Capability
INT Current Sinking Capability
0.55
V
IL
V
1.25
4
V
IH
I
V
= 0.4V
5
5
mA
mA
SDA
OL
I
V
= 0.4V
4
INT
OL
Electrical Specifications VDD = 3.0V, TA = +25°C, R = 1MΩ1% tolerance, 16-bit ADC operation, unless otherwise specified.
EXT
MIN
MAX
PARAMETER
DESCRIPTION
Power Supply Range
TEST CONDITIONS
Software disabled or auto power-down
16-bit ADC data
(Note 6)
TYP
(Note 6)
UNIT
V
V
2.25
3.63
50
DD
I
Supply Current
42
µA
µA
V
DD
I
Supply Current when Powered Down
0.01
0.3
DD1
2
V
Supply Voltage Range for I C Interface
1.70
305
3.63
385
I2C
f
Internal Oscillator Frequency
340
200
kHz
ms
kHz
OSC
t
ADC Integration/Conversion Time
INT
2
F
I C Clock Rate Range
1 to
400
I2C
DATA_0
DATA_F
Count Output when Dark
Full Scale ADC Code
E = 0 lux, Range 1 (125 lux)
Ambient Light Sensing
1
10
Counts
Counts
%
65535
ΔDATA
DATA
Count Output Variation Over Three Light
Sources: Fluorescent, Incandescent and
Sunlight
±10
DATA_1
DATA_2
Light Count Output with LSB
of 0.00095 lux/Count
E = 18.75 lux, fluorescent light (Note 7),
ambient light sensing, Range 1 (62.5 lux)
15000 20000
25000
Counts
Counts
Counts
Counts
Counts
Counts
Counts
Counts
Light Count Output with LSB
of 0.000375 lux/Count
E = 18.75 lux, fluorescent light (Note 7),
ambient light sensing, Range 2 (250 lux)
5000
DATA_3
Light Count Output with LSB
of 0.015 lux/Count
E = 18.75 lux, fluorescent light (Note 7),
ambient light sensing, Range 3 (1k lux)
1250
DATA_4
Light Count Output with LSB
of 0.6 lux/Count
E = 18.75 lux, fluorescent light (Note 7),
ambient light sensing, Range 4 (4k lux)
312
15000 20000
5000
DATA_IR1
DATA_IR2
DATA_IR3
DATA_IR4
Infrared Count Output
Infrared Count Output
Infrared Count Output
Infrared Count Output
E = 10 lux solar light (Note 8),
ambient light sensing, Range 1 (62.5 lux)
25000
E = 10 lux solar light (Note 8),
ambient light sensing, Range 2 (250 lux)
E = 10 lux solar light (Note 8),
ambient light sensing, Range 3 (1000 lux)
1250
E = 10 lux solar light (Note 8),
312
ambient light sensing, Range 4 (4000 lux)
V
Voltage of R
Pin
EXT
0.52
V
V
REF
V
SCL and SDA Input Low Voltage
SCL and SDA Input High Voltage
SDA Current Sinking Capability
INT Current Sinking Capability
0.55
IL
V
1.25
V
IH
I
V
= 0.4V
= 0.4V
4
4
5
5
mA
mA
SDA
OL
I
V
OL
INT
FN7656 Rev 5.00
Page 4 of 15
September 28, 2016
ISL29033
2
I C Electrical Specifications For SCL and SDA (Figure 2), unless otherwise noted, V = 3V, T = +25°C, R
= 499kΩ 1% and 1MΩ
EXT
DD
A
1% tolerance.
MIN
MAX
PARAMETER
DESCRIPTION
TEST CONDITIONS
(Note 6)
TYP
(Note 6) UNIT
2
V
Supply Voltage Range for I C Interface
1.7
3.63
400
0.55
V
kHz
V
I2C
f
SCL Clock Frequency
SCL
V
SCL and SDA Input Low Voltage
SCL and SDA Input High Voltage
Hysteresis of Schmitt Trigger Input
IL
V
1.25
V
IH
V
0.05V
V
hys
DD
V
Low-Level Output Voltage (Open-Drain) at 4mA
Sink Current
0.4
V
OL
I
Input Leakage for each SDA, SCL Pin
-10
10
50
µA
ns
i
t
t
Pulse Width of Spikes that must be Suppressed by
the Input Filter
SP
SCL Falling Edge to SDA Output Data Valid
Capacitance for each SDA and SCL Pin
Hold Time (Repeated) START Condition
900
10
ns
pF
ns
AA
C
i
t
t
After this period, the first clock pulse
is generated.
600
HD:STA
t
LOW Period of the SCL Clock
HIGH Period of the SCL Clock
Set-up Time for a Repeated START Condition
Data Hold Time
Measured at the 30% of V crossing
DD
1300
600
ns
ns
ns
ns
ns
ns
ns
ns
ns
LOW
t
HIGH
600
SU:STA
HD:DAT
t
30
t
Data Set-Up Time
100
SU:DAT
t
Rise Time of Both SDA and SCL Signals
Fall Time of Both SDA and SCL Signals
Set-Up Time for STOP Condition
(Note 9)
(Note 9)
20 + 0.1xC
20 + 0.1xC
600
R
b
b
t
F
t
SU:STO
t
Bus Free Time Between a STOP and START
Condition
1300
BUF
C
Capacitive Load for Each Bus Line
SDA and SCL System Bus Pull-Up Resistor
Data Valid Time
400
pF
kΩ
µs
µs
V
b
R
Maximum is determined by t and t
F
1
pull-up
VD;DAT
VD:ACK
R
t
0.9
0.9
t
Data Valid Acknowledge Time
Noise Margin at the LOW Level
Noise Margin at the HIGH Level
V
0.1V
0.2V
nL
DD
V
V
nH
DD
NOTE:
6. Compliance to datasheet limits is assured by one or more methods: production test, characterization, and/or design.
7. A 550nm green LED is used in production test. The 550nm LED irradiance is calibrated to produce the same DATA count as a fluorescent light with
illuminance at the stated lux.
8. An 850nm IR LED is used in production test. The 850nm LED irradiance is calibrated to produce the same DATA_IR count as solar light with
illuminance at the stated lux.
9. C is the capacitance of the bus in pF.
b
FN7656 Rev 5.00
Page 5 of 15
September 28, 2016
ISL29033
curve in Figure 8 is converted into current. With ADC, the current
is converted to an unsigned n-bit (up to 16 bits) digital output.
Principles of Operation
Photodiodes and ADC
Interrupt Function
The ISL29033 contains two photodiode arrays that convert light
into current. The spectral response for ambient light sensing and
infrared (IR) sensing is shown in Figure 8 on page 12. After light
is converted to current during the light signal process, the current
output is converted to digital by a built-in 16-bit Analog-to-Digital
The active low-interrupt pin is an open-drain pull-down
configuration. The interrupt pin serves as an alarm or monitoring
function to determine whether the ambient light level exceeds
the upper threshold or goes below the lower threshold. Note that
the function of ADC conversion continues without stopping after
interrupt is asserted. If the user needs to read the ADC count that
triggers the interrupt, reading should be done before the data
registers are refreshed by subsequent conversions. The user can
also configure the persistency of the interrupt pin. This reduces
the possibility of false triggers, such as noise or sudden spikes in
ambient light conditions. An unexpected camera flash, for
example, can be ignored by setting the persistency to eight
integration cycles.
2
Converter (ADC). An I C command reads the ambient light or IR
intensity in counts.
The converter is a charge-balancing integrating type 16-bit ADC.
The chosen method for conversion is best for converting small
current signals in the presence of an AC periodic noise. A 100ms
integration time, for instance, highly rejects a 50Hz and 60Hz
power line noise simultaneously. See “Integration and
Conversion Time” on page 9.
The built-in ADC offers user flexibility in integration time or
conversion time. There are two timing modes: Internal timing
mode and external timing mode. In internal timing mode,
ALS Ranges Considerations
When measuring ALS counts higher than 30000 counts on
Range 1 of the 16-bit ADC, switch to Range 2 (change [1 to 0]
bits of Register 1 from 00 to 01) and remeasure the ALS counts
and other data to change to Range 3 and Range 4. This
recommendation pertains only to applications in which light
incident on the sensor is IR-heavy and is distorted by tinted glass
that increases the ratio of infrared to visible light.
integration time is determined by an internal oscillator (f
) and
OSC
the n-bit (n = 4, 8, 12, 16) counter inside the ADC. In external
timing mode, integration time is determined by the time between
2
two consecutive I C External Timing Mode commands. A good
balance of integration time and resolution (depending on
application) is required for optimal results.
2
The ADC has an I C programmable range select to dynamically
V
Power-Up and Power Supply
DD
accommodate various lighting conditions. For very dim conditions,
the ADC can be configured at its lowest range (Range 1) in the
ambient light sensing.
Considerations
Upon power-up, ensure a V slew rate of 0.5V/ms or greater.
After power-up, or if the power supply temporarily deviates from
specification (2.25V to 3.63V), the following step is
recommended: write 0x00 to register 0x00. Wait a few seconds
and then rewrite all registers to the desired values. A hardware
reset method can be used, if preferred, instead of writing to the
test registers. For this method, set V = 0V for 1 second or more,
power back up at the required slew rate and write the registers to
the desired values.
DD
Low-Power Operation
The ISL29033 initial operation is at the power-down mode after a
supply voltage is provided. The data registers contain the default
value of 0. When the ISL29033 receives an I C command to do a
one-time measurement from an I C master, it starts an ADC
conversion with light sensing. It goes to power-down mode
automatically after one conversion is finished and keeps the
conversion data available for the master to fetch anytime
afterwards. The ISL29033 continuously does the ADC conversion
with light sensing if it receives an I C command of continuous
measurement. It continuously updates the data registers with
the latest conversion data. The ISL29033 goes to power-down
2
DD
2
Power-Down
To put the ISL29033 into a power-down state, the user can set
[7 to 5] bits to 0 in Register 0. Or more simply, set all of
Register 0 to 0x00.
2
2
mode after it receives the I C command of power-down.
2
I C Interface
Ambient Light
There are eight 8-bit registers available inside the ISL29033. The
two command registers define the operation of the device. The
command registers do not change until the registers are
overwritten. The two 8-bit data read-only registers are for the ADC
output. The data registers contain the ADC's latest digital output,
or the number of clock cycles in the previous integration period
(Figure 2 on page 7).
There are two operational modes in ISL29033: programmable
continuous ALS sensing and programmable continuous IR
sensing. These two modes can be programmed in series to fulfill
the application needs. The detailed program configuration is
shown in the Figure 1 on page 1.
When the part is programmed for ambient light sensing, the
ambient light with wavelength within the “Ambient Light
Sensing” spectral response curve in Figure 8 is converted into
current. With ADC, the current is converted to an unsigned n-bit
(up to 16 bits) digital output.
2
The ISL29033 I C interface slave address is internally hard-wired as
1000100. When 1000100x, with x as R or W, is sent after the start
condition, the device compares the first seven bits of this byte to its
address and matches. Figure 3 on page 7 shows a sample one-
byte read and Figure 4 on page 8 shows a sample one-byte write.
The I C bus master always drives the SCL (clock) line, while either
the master or the slave can drive the SDA (data) line. Every I C
2
When the part is programmed for infrared (IR) sensing, the IR
light with wavelength within the “IR Sensing” spectral response
2
FN7656 Rev 5.00
Page 6 of 15
September 28, 2016
ISL29033
transaction begins with the master asserting a start condition
(SDA falling while SCL remains high). The following byte is driven
by the master and includes the slave address and the read/write
bit. The receiving device is responsible for pulling SDA low during
2
the acknowledgment period. Every I C transaction ends with the
master asserting a stop condition (SDA rising while SCL remains
high).
2
For more information about the I C standard, consult the
™ 2
Philips I C specification documents.
2
FIGURE 2. I C TIMING DIAGRAM
2
2
I
C DATA
START
DEVICE ADDRESS
W
A
A
A
9
REGISTER ADDRESS
STOP START
DEVICE ADDRESS
A
A
DATA BYTE0
I
C SDA
IN
A6 A5 A4 A3 A2 A1 A0 W
SDA DRIVEN BY MASTER
R7 R6 R5 R4 R3 R2 R1 R0
SDA DRIVEN BY MASTER
A
A
9
A6 A5 A4 A3 A2 A1 A0
W
SDA DRIVEN BY ISL29033
2
I
C SDA
OUT
SDA DRIVEN BY MASTER
A D7 D6 D5 D4 D3 D2 D1 D0
2
I
C CLK
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
2
FIGURE 3. I C READ TIMING DIAGRAM SAMPLE
FN7656 Rev 5.00
September 28, 2016
Page 7 of 15
ISL29033
2
I C DATA
START
DEVICE ADDRESS
W
W
A
A
A
REGISTER ADDRESS
A
FUNCTIONS
A
A
STOP
2
I C SDA IN
A6 A5 A4 A3 A2 A1 A0
SDA DRIVEN BY MASTER
R7 R6 R5 R4 R3 R2 R1 R0
SDA DRIVEN BY MASTER
A
B7 B6 B5 B4 B3 B2 B1 B0
SDA DRIVEN BY MASTER
2
I C SDA OUT
A
9
A
2
I C CLK IN
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
9
2
FIGURE 4. I C WRITE TIMING DIAGRAM SAMPLE
TABLE 1. REGISTER SET
BIT
ADDR
00h
01h
02h
03h
04h
05h
06h
07h
REG NAME
COMMANDI
COMMANDII
7
6
5
4
0
3
2
1
0
DEFAULT
00h
OP2
0
OP1
0
OP0
0
0
FLAG
RES0
D2
PRST1
RANGE 1
D1
PRST0
0
RES1
D3
RANGE 0
D0
00h
DATA
D7
D6
D5
D4
00h
LSB
DATA
D15
TL7
D14
TL6
TL14
TH6
TH14
D13
TL5
TL13
TH5
TH13
D12
TL4
TL12
TH4
TH12
D11
TL3
TL11
TH3
TH11
D10
TL2
D9
D8
00h
MSB
INT_LT_LSB
INT_LT_MSB
INT_HT_LSB
INT_HT_MSB
TL1
TL0
00h
TL15
TH7
TL10
TH2
TH10
TL9
TL8
00h
TH1
TH0
TH8
FFh
TH15
TH9
FFh
Register Set
There are eight registers available in the ISL29033. Table 1
summarizes their functions.
TABLE 2. OPERATION MODE
OPERATION
BITS 7 TO 5
000
Power-down the device
Reserved (do not use)
Reserved (do not use)
Reserved (do not use)
ALS continuous
Command Register I 00 (Hex)
The first command register has the following functions:
001
010
1. Operation Mode: Bits 7, 6 and 5. These three bits determine
the operation mode of the device (Table 2).
100
2. Interrupt flag: Bit 2. This is the status bit of the interrupt
(Table 3). The bit is set to logic high when the interrupt
thresholds have been triggered (out of threshold window) and
to logic low when not yet triggered. When activated and the
interrupt is triggered, the INT pin goes low and the interrupt
status bit goes high until the status bit is polled through the
101
110
IR continuous
111
Reserved (do not use)
2
TABLE 3. INTERRUPT FLAG
OPERATION
I C read command. Both the INT output and the interrupt
status bit are automatically cleared at the end of the 8-bit
(00h) command register transfer.
BIT 2
0
1
Interrupt is cleared or not triggered yet
Interrupt is triggered
3. Interrupt Persist: Bits 1 and 0. The interrupt pin and the
interrupt flag are triggered or set when the data sensor
reading is out of the interrupt threshold window after m
consecutive number of integration cycles (Table 4 on page 9).
The interrupt persist bits determine m.
FN7656 Rev 5.00
Page 8 of 15
September 28, 2016
ISL29033
TABLE 4. INTERRUPT PERSIST
NUMBER OF INTEGRATION CYCLES
Interrupt Registers (04, 05, 06, and 07 Hex)
Registers 04 and 05 hex set the Low (LO) threshold for the
interrupt pin and the interrupt flag. Register 04 hex is the LSB
and Register 05 hex is the MSB. By default, the interrupt
threshold LO is 00 hex for both LSB and MSB.
BIT 1:0
00
1
4
01
10
8
Registers 06 and 07 hex set the High (HI) threshold for the
interrupt pin and the interrupt flag. Register 06 hex is the LSB
and Register 07 hex is the MSB. By default, the interrupt
threshold HI is FF hex for both LSB and MSB.
11
16
Command Register II 01 (Hex)
The second command register has the following functions:
Calculating Lux
The ISL29033 ADC output codes, DATA, are directly proportional
to lux in ambient light sensing, as shown in Equation 1.
1. Resolution: Bits 3 and 2. Bits 3 and 2 determine the ADC
resolution and the number of clock cycles per conversion
(Table 5). Changing the number of clock cycles does more than
just change the resolution of the device; it also changes the
integration time, which is the period during which the
Analog-to-Digital (A/D) converter samples the photodiode
current signal for a measurement.
E
= DATA
(EQ. 1)
cal
In this equation, E is the calculated lux reading. The constant,
cal
α, is determined by the full scale range and the ADC maximum
output counts. The constant is independent of the light sources
(fluorescent, incandescent, and sunlight) because the light
source IR component is removed during the light signal process.
The constant can also be viewed as the sensitivity (the smallest
lux measurement the device can measure), as shown in
Equation 2.
2. Range: Bits 1 and 0. The Full Scale Range (FSR) can be
2
adjusted through the I C by using Bits 1 and 0. Table 6 lists
the possible values of FSR for the 499kΩ R
resistor.
EXT
TABLE 5. ADC RESOLUTION DATA WIDTH
BITS 3:2
00
NUMBER OF CLOCK CYCLES
16
n-BIT ADC
Rangek
----------------------------
=
(EQ. 2)
Count
2
= 65,536
16
12
8
max
12
01
2
= 4,096
2 = 256
In this equation, Range(k) is as defined in Table 6. Count
the maximum output counts from the ADC.
is
max
8
10
4
11
2
= 16
4
The transfer function used for n-bits ADC is as shown in
Equation 3:
TABLE 6. RANGE/FSR LUX
Rangek
---------------------------
E
=
DATA
(EQ. 3)
cal
n
BITS 1:0
k
1
2
3
4
RANGE(k)
Range1
Range2
Range3
Range4
FSR (lux) AT ALS SENSING
2
00
01
10
11
125
500
In this equation, n = 4, 8, 12 or 16 and is the number of ADC bits
programmed in the command register. The number 2
represents the maximum number of counts possible from the
ADC output. Data is the ADC output stored in data
Registers 02 hex and 03 hex.
n
2,000
8,000
Integration and Conversion Time
Data Registers (02 Hex and 03 Hex)
ADC resolution and f
determine the integration time, t , as
int
OSC
shown in Equation 4.
The device has two 8-bit read-only registers to hold the data from
LSB to MSB for the ADC (Table 7). The Most Significant Bit (MSB)
is accessed at 03 hex and the Least Significant Bit (LSB) is
accessed at 02 hex. For 16-bit resolution, the data is from D0 to
D15; for 12-bit resolution, the data is from D0 to D11; for 8-bit
resolution, the data is from D0 to D7. The registers are refreshed
after every conversion cycle.
R
n
n
1
EXT
(EQ. 4)
-------------
---------------------------------------------
t
= 2
= 2
int
f
655kHz 499k
OSC
In this equation, n is the number of bits of resolution and n = 4, 8,
n
12 or 16. Therefore, 2 is the number of clock cycles. The value
of n can be programmed at the command register, Register 01
hex, Bits 3 and 2 see (Table 8).
TABLE 7. DATA REGISTERS
ADDRESS
TABLE 8. INTEGRATION TIME OF n-BIT ADC
(HEX)
02
CONTENTS
R
(kΩ)
n = 16-BIT
(ms)
n = 12-BIT
(ms)
n = 8-BIT
(µs)
n = 4-BIT
(µs)
EXT
D0 is LSB for 4-, 8-, 12- or 16-bit resolution; D3 is MSB for
4-bit resolution; D7 is MSB for 8-bit resolution
499
100
200
6.25
12.5
391
782
24
48
03
D15 is MSB for 16-bit resolution; D11 is MSB for 12-bit
resolution
1000
FN7656 Rev 5.00
Page 9 of 15
September 28, 2016
ISL29033
External Scaling Resistor R
Range
for f
and
Suggested PCB Footprint
It is important that users check TB477, “Surface Mount Assembly
Guidelines for Optical Dual FlatPack No Lead (ODFN) Package”
before starting ODFN product board mounting.
EXT
OSC
The ISL29033 uses an external resistor, R , to fix its internal
EXT
oscillator frequency, f
and the light sensing range, Range.
OSC,
The f
and Range are inversely proportional to R . For ease
OSC
EXT
of use, the proportionality constant is referenced to 499kΩ.
Layout Considerations
The ISL29033 is relatively insensitive to layout. Like other I C
devices, it is intended to provide excellent performance even in
significantly noisy environments. Attention to a few
considerations will ensure best performance.
Calculation for Range is shown in Equation 5 and for f
Equation 6.
in
2
OSC
(EQ. 5)
(EQ. 6)
499k
-----------------
Range =
Rangek
R
EXT
2
Route the supply and I C traces as far as possible from all
499k
-----------------
f
=
655kHz
OSC
sources of noise. Use two power-supply decoupling capacitors,
1µF and 0.1µF, placed close to the device.
R
EXT
Noise Rejection
In general, integrating-type ADCs have excellent noise rejection
characteristics for periodic noise sources for which, frequency is
an integer multiple of the conversion rate. For example, a 60Hz
Typical Circuit
A typical application for the ISL29033 is shown in Figure 5. The
2
ISL29033 I C address is internally hardwired as 1000100. The
2
device can be tied onto a system’s I C bus together with other
AC unwanted signal’s sum from 0ms to k*16.66ms (k = 1, 2...k )
2
i
I C-compliant devices.
is zero. Similarly, setting the device’s integration time to be an
integer multiple of the periodic noise signal greatly improves the
light sensor output signal in the presence of noise.
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; it is
qualified to +260°C. A standard reflow soldering profile with a
+260°C maximum is recommended.
ADC Output in IR Sensing
The ISL29033 ADC output codes, DATA, are directly proportional
to the IR intensity received in IR sensing, as shown in Equation 7.
DATA = E
(EQ. 7)
IR
IR
ALS Sensor Window Layout
In this equation, E is the received IR intensity. The constant, ß,
IR
Special care should be taken to ensure that the sensor, as shown
in the sensor location outline (Figure 6 on page 11), is uniformly
illuminated. Shadows from off-angle window openings can affect
uniform illumination, which in turn can affect measurement
changes with the spectrum of background IR noise, such as
sunlight and incandescent light. The constant, ß, also changes
with ADC range and resolution selections.
1.7V TO 3.63V
2
I C MASTER
R
10k
R
10k
R
3
RES1
1
2
MICROCONTROLLER
SDA
SCL
INT
2.25V TO 3.63V
2
2
2
I C SLAVE_0
I C SLAVE_1
SDA
I C SLAVE_n
SDA
1
2
6
5
4
VDD
SDA
SCL
INT
SCL
SCL
GND
C
1µF
C
2
0.1µF
1
3
REXT
ISL29033
R
EXT
499kΩ
FIGURE 5. ISL29033 TYPICAL CIRCUIT
FN7656 Rev 5.00
Page 10 of 15
September 28, 2016
ISL29033
6
1
5
2
0.40
0.54
4
3
0.37
FIGURE 6. 6 LD ODFN SENSOR LOCATION OUTLINE
FN7656 Rev 5.00
Page 11 of 15
September 28, 2016
ISL29033
Typical Performance Curves
V
= 3.0V, R
= 499kΩ.
EXT
DD
1.0
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
HUMAN EYE
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
FLUORESCENT
IR SENSING
ALS
HALOGEN
INCANDESCENT
SUN
300
400
500
600
700
800
900 1000 1100
350
550
750
950
WAVELENGTH (nm)
WAVELENGTH (nm)
FIGURE 7. SPECTRUM OF FOUR LIGHT SOURCES NORMALIZED BY
LUMINOUS INTENSITY (lux)
FIGURE 8. NORMALIZED SPECTRAL RESPONSE FOR AMBIENT
LIGHT SENSING
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
5
4
3
2
MAX
1
0
-1
MIN
-2
-3
-4
-5
-90 -75 -60 -45 -30 -15
0
15 30 45 60 75 90
0
20
40
60
80
100
120
ANGULAR OFFSET (°)
LUX METER (lux)
FIGURE 10. LINEARITY OVER RANGE 1
FIGURE 9. ANGULAR SENSITIVITY
20
18
16
14
12
10
8
70000
60000
50000
40000
30000
20000
10000
0
FLUORESCENT LIGHT
500kΩ
HALOGEN
INCANDESCENT LIGHT
6
4
2
0
0
10
20
30
40
50
60
70
80
90 100
0
0.005
0.01
0.015
0.02
LUX READING (lux)
LUX METER (lux)
FIGURE 11. LOW LUX AT GREEN LED (500kΩ)
FIGURE 12. LIGHT SOURCES AT RANGE 1, 500kΩ R
EXT
FN7656 Rev 5.00
Page 12 of 15
September 28, 2016
ISL29033
Typical Performance Curves
V
= 3.0V, R
= 499kΩ. (Continued)
EXT
DD
10
8
45
40
35
30
25
20
15
10
5
6
4
2
500k, 30LUX NORMALIZED
0
-2
1MΩ
-4
-6
-8
-10
-60
0
0
-40
-20
0
20
40
60
80
100
0.005
0.010
0.015
0.020
TEMPERATURE (°C)
LUX METER (lux)
FIGURE 13. 500kΩ ALS COUNT, 30 LUX NORMALIZED
FIGURE 14. LOW LUX AT GREEN LED (1MΩ)
70000
10
8
FLUORESCENT LIGHT
60000
50000
40000
30000
20000
10000
0
6
4
2
1M, 20 LUX NORMALIZED
0
HALOGEN
-2
-4
-6
-8
-10
INCANDESCENT LIGHT
0
10
20
30
40
50
-60
-40
-20
0
20
40
60
80
100
LUX READING (lux)
TEMPERATURE (°C)
FIGURE 15. LIGHT SOURCES AT RANGE 1, 1MΩ R
FIGURE 16. 1MΩ ALS COUNTS, 30 LUX NORMALIZED
EXT
90
80
70
60
50
40
30
20
10
500kΩ
1MΩ
0
2.25
2.75
3.25
3.75
V
(V)
DD
FIGURE 17. SUPPLY CURRENT vs V ALS SENSING
DD
FN7656 Rev 5.00
Page 13 of 15
September 28, 2016
ISL29033
Revision History The revision history provided is for informational purposes only and is believed to be accurate, but not warranted.
Visit our website to make sure you have the latest revision.
DATE
REVISION
FN7656.5
CHANGE
September 28, 2016
Updated Related Literature section.
Updated Pin Configuration title changed “Bottom View” to “Top View”.
April 21, 2016
FN7656.4
FN7656.3
Removed AN1422 reference on page 1.
December 16, 2015
Ambient Light on page 6: Removed mention of “once mode” in Principles of Operation/Ambient Light.
Command Register I 00 (Hex) on page 8: Split section 1 under Register Set/Command Register I into 2 sections.
Updated POD L6.2x2.1 to most current version changes are as follows:
Change Note 5 From: Tiebar shown (if present) is a non-functional feature.
To: Tiebar shown (if present) is a non-functional feature and may be located on any of the 4 sides (or ends).
Updated Arrows to correct arrow type.
September 26, 2012
September 21, 2011
FN7656.2
FN7656.1
Corrected horizontal axis in Figure 9 on page 12 from 0 to 40 to -90 to 90.
Changed Title on page 1 from “Integrated Digital Ambient Light Sensor with Interrupt Function” to “Ultra-Low Lux,
Low Power, Integrated Digital Ambient Light Sensor with Interrupt Function”
August 25, 2011
FN7656.0
Initial Release
About Intersil
Intersil Corporation is a leading provider of innovative power management and precision analog solutions. The company's products
address some of the largest markets within the industrial and infrastructure, mobile computing and high-end consumer markets.
For the most updated datasheet, application notes, related documentation and related parts, see the respective product information
page found at www.intersil.com.
You may report errors or suggestions for improving this datasheet by visiting www.intersil.com/ask.
Reliability reports are also available from our website at www.intersil.com/support.
© Copyright Intersil Americas LLC 2011-2016. All Rights Reserved.
All trademarks and registered trademarks are the property of their respective owners.
For additional products, see www.intersil.com/en/products.html
Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted
in the quality certifications found at www.intersil.com/en/support/qualandreliability.html
Intersil products are sold by description only. Intersil may modify the circuit design and/or specifications of products at any time without notice, provided that such
modification does not, in Intersil's sole judgment, affect the form, fit or function of the product. Accordingly, the reader is cautioned to verify that datasheets 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.
For information regarding Intersil Corporation and its products, see www.intersil.com
FN7656 Rev 5.00
Page 14 of 15
September 28, 2016
ISL29033
For the most recent package outline drawing, see L6.2x2.1
Package Outline Drawing
L6.2x2.1
6 LEAD OPTICAL DUAL FLAT NO-LEAD PLASTIC PACKAGE (ODFN)
Rev 4, 2/15
2.10
A
6
B
PIN #1
INDEX AREA
6
1
PIN 1
INDEX AREA
0.65
1.35 1.30 REF
2.00
4
6x0.30 ±0.05
(4X)
0.10
0.10 M C A B
0.65
6x0.35 ±0.05
TOP VIEW
BOTTOM VIEW
2.50
2.10
PACKAGE
OUTLINE
SEE DETAIL "X"
0.65
0.10 C
C
(4x0.65)
MAX 0.75
BASE PLANE
SEATING PLANE
0.08 C
SIDE VIEW
(1.35)
0.2 REF
5
C
(6x0.30)
(6x0.20)
(6x0.55)
TYPICAL RECOMMENDED LAND PATTERN
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 ASME Y14.5m-1994.
3.
Unless otherwise specified, tolerance: Decimal ± 0.05
4. Dimension applies to the metallized terminal and is measured
between 0.15mm and 0.30mm from the terminal tip.
Tiebar shown (if present) is a non-functional feature and
maybe located on any of the 4 sides (or ends).
5.
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.
FN7656 Rev 5.00
Page 15 of 15
September 28, 2016
相关型号：
ISL29033IROZ-T7
Ultra-Low Lux, Low Power, Integrated Digital Ambient Light Sensor with Interrupt Function
RENESAS
ISL29033IROZ-T7
Ultra-Low Lux, Low Power, Integrated Digital Ambient Light Sensor with Interrupt Function
INTERSIL
©2020 ICPDF网 联系我们和版权申明