MAX44007EDT+T Maxim Integrated Products, MAX44007EDT+T Datasheet

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MAX44007EDT+T

Manufacturer Part Number
MAX44007EDT+T
Description
Optical Sensors - Industrial Industry's Lowest-Po wer Ambient Light Se
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX44007EDT+T

Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
19-5492; Rev 0; 11/10
The MAX44007 ambient light sensor features an I
digital output that is ideal for a number of portable appli-
cations such as smartphones, notebooks, and industrial
sensors. At less than 1µA operating current, it is the
lowest power ambient light sensor in the industry and
features an ultra-wide 22-bit dynamic range from 0.025
lux to 104,444 lux.
Low-light operation allows easy operation in dark glass
applications.
The on-chip photodiode’s spectral response is optimized
to mimic the human eye’s perception of ambient light
and incorporates IR and UV blocking capability. The
adaptive gain block automatically selects the correct lux
range to optimize the counts/lux.
The IC includes two I
010x and 1011 011x.
The IC is designed to operate from a 1.7V to 3.6V sup-
ply voltage range and consumes only 0.65µA in full
operation. It is available in a small, 2mm x 2mm x 0.6mm
UTDFN-Opto package.
Tablet PCs/Notebook Computers
TVs/Projectors/Displays
Digital Lighting Management
Portable Devices
Cellular Phones/Smartphones
Security Systems
Low-Power Digital Ambient Light Sensor
_ _ ______________________________________________________________ _Maxim Integrated Products_ _ 1
2
C slave address options: 1011
General Description
Applications
with Enhanced Sensitivity
2
C
S
S
S
S
S
S
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
MAX44007EDT+
Wide_0.025_Lux_to_104,444_Lux_Range
Small,_2mm_x_2mm_x_0.6mm_UTDFN-Opto
V
I
-40 N C_to_+85NC_Temperature_Range
Improved_Sensitivity_Behind_Dark_Glass
CC
CC
MAX44007
_=_0.65µA_Operating_Current
PHOTODIODE
PHOTODIODE
PART
VISIBLE +IR
_=_1.7V_to_3.6V
IR
16-BIT
16-BIT
ADC
ADC
6 UTDFN-Opto-EP*
6-BIT RANGE
PIN-PACKAGE
CONTROL
CDR, TIM
Ordering Information
PROCESSING
Block Diagram
DIGITAL
SIGNAL
-40NC to +85NC
TEMP_RANGE
Features
GND
I
2
C
V
CC
N
SDA
SCL
AO
INT

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MAX44007EDT+T Summary of contents

Page 1

... UTDFN-Opto package. Tablet PCs/Notebook Computers TVs/Projectors/Displays Digital Lighting Management Portable Devices Cellular Phones/Smartphones Security Systems _ _ ______________________________________________________________ _Maxim Integrated Products_ _ 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. with Enhanced Sensitivity 2 C Wide_0.025_Lux_to_104,444_Lux_Range ...

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Low-Power Digital Ambient Light Sensor with Enhanced Sensitivity ABSOLUTE_MAxIMUM_RATINGS INT to GND ............................................... -0. All Other Pins to GND .............................................-0.3V to +4V INT Short-Circuit Current Duration ........................................ 10s All Other Pins Short-Circuit Current Duration ............Continuous Continuous Input Current ...

Page 3

Low-Power Digital Ambient Light Sensor ELECTRICAL_CHARACTERISTICS_(continued 1.8V -40NC to +85NC, unless otherwise noted.) (Note 1) CC MIN MAX PARAMETER SYMBOL I 2 C_TIMING Serial-Clock Frequency Bus Free Time Between a STOP and a START ...

Page 4

Low-Power Digital Ambient Light Sensor with Enhanced Sensitivity (V = 1.8V, default power-up setting; unless otherwise noted.) CC SPECTRUM RESPONSE 120 100 MAX44007 RESPONSE 300 400 500 600 WAVELENGTH (nm) SPECTRUM OF LIGHT SOURCES FOR ...

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Low-Power Digital Ambient Light Sensor (V = 1.8V, default power-up setting; unless otherwise noted.) CC SUPPLY CURRENT vs. LUX READING 3.5 3.0 2.5 2.0 1.5 1.0 0.5 SUNLIGHT 0 100 1k 10k LUX READING (LUX) PIN NAME 1 V Power ...

Page 6

Low-Power Digital Ambient Light Sensor with Enhanced Sensitivity Detailed Description The MAX44007 is an ambient light sensor with integrated 2 photodiode and ADC with digital interface. To measure ambient light, the die is placed inside an opti- ...

Page 7

Low-Power Digital Ambient Light Sensor Table_1._Register_Map REGISTER 7 6 STATUS Interrupt Status — — Interrupt Enable — — CONFIGURATION Configuration CONT MANUAL LUx_READING Lux High Byte E3 E2 Lux Low Byte — — THRESHOLD_SET Upper Threshold UE3 UE2 High Byte ...

Page 8

Low-Power Digital Ambient Light Sensor with Enhanced Sensitivity BIT_7 BIT_6 BIT_5 — — — If the INTE bit is set to 1, then the INTS status bit is asserted if the light intensity exceeds either upper or lower threshold limits ...

Page 9

Low-Power Digital Ambient Light Sensor Table_4._Continuous_Mode_Register BIT_7 Default mode. The IC measures lux intensity only once every 800ms regardless of integration time. This mode 0 allows the part to operate at its lowest possible supply current. Continuous mode. The IC ...

Page 10

Low-Power Digital Ambient Light Sensor with Enhanced Sensitivity The TIM[2:0] bits can be used to program the signal integration time. In automatic mode (MANUAL = 0), integration time is automatically selected by the on-chip algorithm to be either 100ms/200ms/400ms/800ms. In ...

Page 11

Low-Power Digital Ambient Light Sensor BIT_7 BIT_6 BIT_5 — — — Bits in Lux Low-Byte register 0x04 give the 4 least significant bits of the mantissa byte representing the lux reading of ambient light. Combined with the Lux High-Byte register ...

Page 12

Low-Power Digital Ambient Light Sensor with Enhanced Sensitivity BIT_7 BIT_6 BIT_5 LE3 LE2 LE1 The Lower Threshold register exponent with the four most significant bits of the mantissa sets the lower trip level for interrupt functionality. This lower limit is ...

Page 13

Low-Power Digital Ambient Light Sensor The count is multiplied by 0.045, which is the LSB. Because of the logarithmic nature of autoranging cir- cuitry implemented on the IC, resolution of ambient lux readings scale with the absolute measurement. Table 8 ...

Page 14

Low-Power Digital Ambient Light Sensor with Enhanced Sensitivity Table_9._Recommended_Manual_Mode_Settings_for_Configuration_Register_(0x02)_and_ Threshold_Registers_(0x05,_0x06) APPLICATION_CONDITIONS LUx_LSB_ LUx_ LUx_LSB_ (MIN) (MAx) (MAx) 0.025 1632 6.4 0.05 3264 12.8 0.1 6528 25.6 0.2 13,056 51.2 0.4 26,112 102.4 0.8 52,224 204.8 1.6 104,448 409.6 3.2 104,448 ...

Page 15

Low-Power Digital Ambient Light Sensor READ MAX44007 AMBIENT LUX, SET APPROPRIATE BACKLIGHT STRENGTH WRITE TO UPPER LUX THRESHOLD, LOWER LUX THRESHOLD AND LUX THRESHOLD TIMER REGISTERS WORK ON TASKS/SLEEP UNTIL WOKEN BY HARDWARE INTERRUPT READ INTS BIT TO CONFIRM Y ...

Page 16

Low-Power Digital Ambient Light Sensor with Enhanced Sensitivity Serial Interface The IC features C/SMBus™-compatible, 2-wire serial interface consisting of a serial-data line (SDA) and a serial-clock line (SCL). SDA and SCL facilitate com- munication ...

Page 17

Low-Power Digital Ambient Light Sensor S SR SCL SDA Figure 4. START, STOP, and REPEATED START Conditions The slave address is controlled by the A0 pin. Connect A0 to either ground set the address. Table 10 CC ...

Page 18

Low-Power Digital Ambient Light Sensor with Enhanced Sensitivity ACKNOWLEDGE FROM MAX44007 S SLAVE ADDRESS R/W Figure 6. Writing 1 Byte of Data to the IC ACKNOWLEDGE FROM MAX44007 ACKNOWLEDGE FROM MAX44007 S SLAVE ADDRESS 0 A R/W Figure 7. Reading ...

Page 19

Low-Power Digital Ambient Light Sensor V TO 3.6V 1.7V TO 3.6V CC 1µF 10kI 10kI V SDA CC SCL GND A0* INT MAX44007 *DEVICE ADDRESS IS 1011 010x. CONNECT FOR SLAVE ADDRESS 1011 011x. CC SEE THE ...

Page 20

Low-Power Digital Ambient Light Sensor with Enhanced Sensitivity For the latest package outline information and land patterns www.maxim-ic.com/packages._Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different ...

Page 21

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 2010 Maxim Integrated Products © ...

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