ALS-PDIC17-79NB-TR8_15 Datasheet, PDF (14/19 Pages) Everlight Electronics Co., Ltd – Digital Ambient Light Sensor

DATASHEET
SMD  I²C Digital Ambient Light Sensor
ALS-PDIC17-79NB/TR8
Power Supply Decoupling and Layout
The power supply lines must be decoupled with capacitors, 4.7uF and 0.1uF, placed as close to the device
package as possible. The bypass capacitor should have low effective series resistance (ESR) and effective series
inductance (ESI), such as the common ceramic types, which provide a low impedance path to ground at high
frequencies to handle transient currents caused by internal logic switching. ALS-PDIC17-79NB is relatively insensitive to
layout. Like other I²C devices, it is intended to provide excellent performance even in significantly noisy environments.
There are only a few considerations that will ensure best performance. Route the supply and I²C traces as far as
possible from all sources of noise. Use two power-supply decoupling capacitors, 4.7µF and 0.1µF, placed close to the
device.
Rext is not required working
in " one time integration "
mode.
CB is optional for long
distance connection when
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