资料介绍
The ISL76671 is a low cost, light-to-voltage silicon optical sensor combining a photodiode array, a non-linear current amplifier and a micro-power op amp on a single monolithic IC. Similar to the human eye, the photodiode array has peak sensitivity at 550nm and spans the wavelength range 400nm to 600nm, rejecting UV and IR light. The input luminance range is from 0.01 lux to 100 lux.
The integrated non-linear current amplifier boosts and converts the photodiode signal into a square root output format, extending dynamic range while maintaining excellent sensitivity in dimly lit conditions. As such, the part is ideal for measuring incident daylight when mounted behind heavily smoked bezels used around displays or behind mirrors.
The device consumes minimum power. A dark current compensation circuit minimizes the effect of temperature dependent leakage currents in the absence of light, improving the light sensitivity at low lux levels. The output gain has been optimized to require a relatively low value external bias resistor that falls within recommended automotive EMI limits. The built-in 1μA op amp gives the ISL76671 an output voltage driving advantage for heavier loads that can drive an ADC directly.
The ISL76671 is housed in an ultra compact 2mmx2.1mm ODFN plastic surface mount package. Operation is rated from -40°C to +105°C, Grade 2 per AECQ100. Application Note 1741
Author: Xiaoying Shi
ISL76671 Low Power, <100 Lux Optimized, Analog Output
Ambient Light Sensor Evaluation Hardware User Guide
Description Hardware Setup
The ISL76671 is a low light optimized analog output sensor. In The small ISL76671 evaluation board comprises the sensor
normal operation, the device is intended to be mounted behind device itself and a 100k resistor which sets the output
a smoked glass/plastic bezel which normally sign
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