In Electronic Infomation Category: H | on May 07,2011
Maxims MAX9635, MAX44007 and LT1791ACS datasheet and MAX44009 high ambient light sensor, integrated in a single chip, photodiode, analog front end (AFE), two high-resolution analog / digital converter (ADC), comparison and LT1791ACS price and data formatting processing circuit and LT1791ACS suppliers and I? C interface functions. The light sensor has the industry-leading low operating current (0.65? A), ICC low operating voltage (1.8V), low light sensitivity, the use of 2mm x 2mm x 0.6mm small form factor package.
Light integration time of 100ms when a multiple (such as: 100/200/400/800ms), these ambient light sensor can well 50Hz/60Hz noise suppression. However, in most cases, many applications require a conversion completion signal, the ambient light sensor to reliably read the information to avoid unnecessary delays. This application note describes how to use the devices interrupt pin to provide conversion instructions, detailing the I 2 C register setting method.
Register Light sensor I 2 C registers shown in Table 1. Register Bit Register address Power-on reset state < / o: p> R / W 7 6 5 4 3 2 1 0 Status Interrupt status - < / SPAN> - < / SPAN> - < / SPAN> - < / SPAN> - < / SPAN> - < / SPAN> - < / SPAN> INTS < / SPAN> 0x00 < / SPAN> 0x00 < / SPAN> R < / SPAN> Interrupt enable - < / SPAN> - < / SPAN> - < / SPAN> - < / SPAN> - < / SPAN> - < / SPAN> - < / SPAN> INTE < / SPAN> 0x01 < / SPAN> 0x00 < / SPAN> R / W Configuration Configuration < / SPAN> CONT < / SPAN> MANUAL < / SPAN> - < / SPAN> - < / SPAN> CDR < / SPAN> TIM [2:0] 0x02 < / SPAN> 0x03 < / SPAN> R / W LUX reading LUX high byte E3 < / SPAN> E2 < / SPAN> E1 < / SPAN> E0 < / SPAN> M7 < / SPAN> M6 < / SPAN> M5 < / SPAN> M4 < / SPAN>
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