Figure 1: Block diagram of EL7900 ambient light sensor with integrated current amplifier. This combination allows for lead-length reduction and minimum parasitic capacitance on the amplifier inputs.

1. This block diagram represents a typical ALS/Prox sensor. 2. Different light types affect the performance of an ALS. An ambient light sensor provides consistent light reading irrespective of the ...

However, the ambient light sensor is of low sensitivity (at 1 lux level), and the contribution of screen fluctuation is heavily quantized to ≤5 bits per measurement.