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CJMCU-1972 LX1972 Microsemi Silicon Light Sensor Module Development Board for DIY Arduino
Introduction:
The CJMCU-1972 is a low cost silicon light sensor with spectral response that closely emulates the human eye.
Patented circuitry produces peak spectral response at 520nm, with IR response less than ±5%, of the peakresponse, above 900nm.
The photo sensor is a PIN diode array with a linear, accurate, and very repeatable current transfer function.
High gain current mirrors on the chip multiply the PIN diode photo-current to a sensitivity level that can be voltage scaled with a standard value
external resistor.
Output current from this simple to use two-pin device can be used directly or converted to a voltage by placing it in series with a single resistor at either of its two pins.
Dynamic range is determined by the resistors (typically in the range of 10Kto 100K) and power supply values.
Typically the cjmcu-1972 needs only 1.8V of headroom to operate at 1000 Lux illumination.
Internal temperature compensation allows dark current to be kept below 200nA over the full specification temperature range (-40 to +85°C), providing high accuracy at low light levels. Usable ambient light conditions range is from 1 to more than 5000 Lux.
The CJMCU-1972 is optimized for controlling back lighting systems in low cost consumer products such as LCD TV, portable computers, and digital cameras
Package included:
- 1* CJMCU-1972 LX1972 silicon light sensore
