ISL29002 is a light sensor produced by Intersil, which integrates ADC converter circuit and I2C interface, and can convert light intensity into digital signal
The ISL29002 integrates a photodiode pair and a charge‑balancing integrating ADC to convert ambient light from 1 lux to 100 000 lux into a digital output via a standard I2C interface. It includes a metal‑covered diode for dark‑output cancellation and can be used for backlight control, display dimming and portable illumination management.
Key specifications include a supply voltage of 2.25 V–3.63 V, normal supply current under 300 µA (88 µA in software‑down mode), operation from –40 °C to +85 °C, and a 8‑lead ODFN package. The device offers selectable I2C addresses (0x40‑0x47), up to 15‑bit effective ADC resolution, and adjustable integration times from 50 ms to 550 ms.
| Normal Supply Current | < 300 µA |
|---|---|
| Software‑Disabled Supply Current | < 110 µA (typical 88 µA) |
| Operating Temperature Range | -40 °C to +85 °C |
| ADC Effective Resolution | up to 15‑bit |
| I2C Clock Rate (fast mode) | 400 kHz |
| Package | 8‑lead ODFN (3 mm × 3 mm) |
| Internal Integration Time | 110 ms per photodiode |
| Adjustable Lux Range | 10 000 lux to 100 000 lux |
| Recommended REXT | 100 kΩ (1 % tolerance) |
The three address pins (A0‑A2) set the low three bits, giving eight possible addresses from 0x40 to 0x47.
It consumes less than 300 µA of supply current during normal operation.
A 100 kΩ resistor (1 % tolerance) is recommended for the internal timing mode.
The internal timing mode provides a fixed integration time of 110 ms per photodiode.