Sensor Evaluation Kit User Manual Rev1.0
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3.2. Ambient Light Sensor Breakout Boards
3.2.1. BH1620FVC Breakout Board
The BH1620FVC Breakout Board provides a simple environment to quickly evaluate the performance of the BH1620FVC
sensor. The BH1620FVC is an analog current output ambient light sensor ideal for obtaining ambient light data for adjusting
the LCD and keypad backlight in mobile phones to save power and improve visibility.
Figure 18: BH1620FVC Breakout Board (Top View and Bottom Views)
Figure 19: BH1620FVC Breakout Board Block Diagram
The block diagram and schematic of the BU1620FVC Breakout Board are shown in Figures 19 and 20, respectively.
Resistors R167 to R172 are used to set the Sensor Control value for the board. The Gain Mode can be set by Pin 3 (ADC0)
of Sensor resistors R128 and R131 as listed in Table 3. Pin 5 (IOUT) of the BH1620FVC is connected to the Base Board
via Pin 3 (ADC0) of Sensor Interface Header 2. The Base Board detects the Gain Mode configuration by reading the GPIO0
and GPIO1 pins of Sensor Interface Header 1.
