max9635 Maxim Integrated Products, Inc., max9635 Datasheet
max9635
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max9635 Summary of contents
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... Rev 1; 2/11 General Description The MAX9635 ambient light sensor features an I tal output that is ideal for a number of portable applica- tions such as smartphones, notebooks, and industrial sensors. At less than 1µA operating current the lowest power ambient light sensor in the industry and features an ultra-wide 22-bit dynamic range from 0 ...
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Industry’s Lowest-Power Ambient Light Sensor with ADC 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 Stresses beyond ...
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ELECTRICAL CHARACTERISTICS (continued 1.8V -40NC to +85NC, unless otherwise noted.) (Note 1) CC MIN MAX PARAMETER SYMBOL TIMING Serial-Clock Frequency Bus Free Time Between a STOP and a START Condition Hold ...
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... Industry’s Lowest-Power Ambient Light Sensor with ADC (V = 1.8V, default power upsetting; unless otherwise noted.) CC SPECTRUM RESPONSE 120 100 MAX9635 RESPONSE 300 400 500 600 WAVELENGTH (nm) SPECTRUM OF LIGHT SOURCES FOR MEASUREMENT 160 140 INCANDESCENT 120 100 300 400 ...
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... INCANDESCENT 150 LAMP 100 50 0 100k 0 50 100 150 200 REFERENCE METER READING (LUX) TOP VIEW SDA SCL 6 5 MAX9635 + GND CC OTDFN (2mm x 2mm) C Clock Bus C Data Bus SDA, INT OUTPUT LOW VOLTAGE vs. SINK CURRENT 120 110 100 90 SDA 80 ...
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... The IC can be customized to operate at enhanced sen- sitivity in applications where it needs to operate behind a dark glass. Figure 1. Spectral Sensitivity of the MAX9635 and Human Eye 6 The default integration time of the ADC is 100ms, giving it inherent rejection of 50Hz and 60Hz ripple common in certain line-powered light sources ...
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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 ...
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Industry’s Lowest-Power Ambient Light Sensor with ADC Interrupt events set the INTS bit (register 0x00, bit 0) and the INT pin only if the INTE bit is set the INTE bit is set (interrupt is enabled) and ...
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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 manual mode (MANUAL = 1), integration time can ...
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Industry’s Lowest-Power Ambient Light Sensor with ADC 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 ...
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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 relevant only if the INTE ...
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Industry’s Lowest-Power Ambient Light Sensor with ADC 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. ...
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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) 0.045 2938 11.52 0.09 5875 23.04 0.18 11,750 46.08 0.36 23,501 92.16 0.72 47,002 184.32 ...
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... Industry’s Lowest-Power Ambient Light Sensor with ADC READ MAX9635 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 Figure 2. Typical Operating Sequence ...
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I C 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 between the IC and the master at clock ...
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Industry’s Lowest-Power Ambient Light Sensor with ADC 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 ...
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... Figure 7. Reading One Indexed Byte of Data from the GND A0 Figure 8. Sensor Position Industry’s Lowest-Power Ambient Light Sensor with ADC ACKNOWLEDGE FROM MAX9635 0 A REGISTER ADDRESS ACKNOWLEDGE FROM MAX9635 REGISTER ADDRESS A Sr SLAVE ADDRESS REPEATED START 2mm 1 MAX9635 TOP VIEW 0.75mm 0.24mm ...
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... Industry’s Lowest-Power Ambient Light Sensor with ADC 1.7V TO 3.6V 1µF V SDA CC SCL GND A0* INT MAX9635 *DEVICE ADDRESS IS 0x94. CONNECT FOR SLAVE ADDRESS 0x96. CC SEE THE PIN DESCRIPTION. 18 Typical Application Circuit 10kI 10kI 10kI SDA SDA SCL SCL ...
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For the latest package outline information and land patterns (footprints www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains ...
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... 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 20 2011 Maxim Integrated Products © Revision History DESCRIPTION Maxim is a registered trademark of Maxim Integrated Products, Inc. PAGES CHANGED — 2 ...