Low Power Ambient Light-to-Voltage Non-Linear Converter
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Overview
Description
The ISL29102 is a low cost, light-to-voltage silicon optical sensor combining a photodiode array, a nonlinear current amplifier, and a micro-power op amp on a single monolithic IC. Similar to human eyes, the photodiode array has peak sensitivity at 550nm and spans from 400nm to 600nm, rejecting UV light and IR light. The input luminance range is from 0.3 lux to 10,000 lux. The integrated nonlinear current amplifier boosts and converts the photodiode signal in a square root fashion, extending the light input dynamic range, while maintaining excellent sensitivity at dim conditions with low lux levels. The device consumes minimal power over a wide range of ambient lux levels because the current consumption ramps at a square root fashion. A dark-current compensation circuit minimizes the effect of temperature-dependent leakage currents in the absence of light, improving the light sensitivity at low lux levels while maintaining excellent sensitivity at low lux levels. The built-in 1μA op amp gives the ISL29102 an output voltage driving advantage for heavier loads. The ISL29102 is housed in an ultra-compact 2mm x 2.1mm ODFN plastic case surface mount package. Operation is rated from -40 °C to +85 °C.
Features
- Square root voltage output
- 0.3 lux to 10,000 lux range
- 1.8V to 3.3V supply range
- Close to human eye spectral response
- Fast response time
- Internal temperature compensation
- Good IR rejection
- Low supply current
- Operating temperature range -40 °C to +85 °C
- 6 Ld ODFN: 2mm x 2.1mm x 0.7mm
- Pb-free (RoHS compliant)
Applications
Applications
- Display and keypad dimming for:
- Mobile devices: Smartphones, wearables, PDAs, GPS
- Computing devices: Notebooks PCs, MacBooks, tablets
- Consumer devices: LCD-TVs, digital cameras
- Industrial, home automation and medical light sensing
Design & Development
Software & Tools
Boards & Kits
Boards & Kits
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Low-Light Optimized Analog Output Sensors Evaluation Board
The ISL29102IROZ-EVALZ evaluation board is used to evaluate the performance of the ISL29102 low power ambient light-to-voltage non-linear converter. The board is...
Featured Documents:
Snowflake Ornament Reference Design Featuring Power and Analog Components
Renesas is ready for the cold with a full lineup of power and analog components spec'd to operate down to -40 °C. The snowflake ornament reference design has a series...
Featured Documents:
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Product Options
Processing table
| HODFN | Reel | 3000 | ||
| DODFN | Reel | 250 |
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