ISL29020 pdf datasheet (Digita

The ISL29020 is a low power, high sensitivity, integrated light
sensor with I2C (SMBus Compatible) interface. Its
state-of-the-art photodiode array provides close-to human
eye response and good IR rejection. This ADC is capable of
rejecting 50Hz and 60Hz flicker caused by artificial light
sources. The lux range select feature allows the user to
program the lux range for optimized counts/lux.
In normal operation, typical power consumption 55μA. In
order to further minimize power consumption, two
power-down modes have been provided. If polling is chosen
over continuous measurement of light, the auto-power-down
function shuts down the whole chip after each ADC
conversion for the measurement. The other power-down
mode is controlled by software via the I2C interface. The
power consumption can be reduced to less than 1μA when
powered down.
Designed to operate on supplies from 2.25V to 3.3V with I2C
supply from 1.7V to 3.6V, the ISL29020 is specified for
operation over the -40°C to +85°C ambient temperature range.