Product Introduction
WH11867UF is a light-to-digital converter that combines a photodiode, current amplifier, analog circuits, and a digital signal processor.
The Ambient Light Sensor (ALS) has a built-in filter that suppresses the infrared spectrum and provides a spectral response close to that of the human eye. The ALS can detect from darkness to direct sunlight with a selectable detection range of approximately 40 dB. Dual-channel output (human eye) ensures a good light ratio under different lighting conditions. The ALS has a good light ratio under different lighting conditions.
WH11867UF features programmable interrupt with high/low thresholds.
I. Ambient Light Sensor Chip -Features of WH11867UF:
Compact surface-mount package 1.6x1.6x0.7mm
I2C interface (fast mode up to 400kHz/s)
Dedicated interrupt pin
Power supply voltage range from 1.7V to 3.6V
Operating temperature range from -40°C to +85°C
Light sensor
- Response close to human eye
- Supports up to 16-bit digital output
- Programmable dynamic range ratio = x1: x4: x16: x64: x256
- Linear output code for dynamic range selection
- Eliminates 50/60 Hz flicker through programmable integration time
- Fluorescent flicker immunity
II. Ambient LightSensor Chip -Applications of WH11867UF:
Backlight control for mobile phones and LCD displays
Laptop/monitor security
Automatic menu pop-up
Digital camera photometer
