ISL29102

Low Power Ambient Light-to-Voltage Nonlinear Converter

Product Status: Mass Production(*)

OVERVIEW

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 2mmx2.1mm ODFN plastic case surface mount package. Operation is rated from -40°C to +85°C.

KEY 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: 2mmx2.1mmx0.7mm
  • Pb-free (RoHS compliant)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL29102
Basic Information
Production Status
Mass Production(*)
Peak Spectral Sensitivity
550 nm
VS (min)
1.8 V
VS (max)
3.3 V
Supply Current @ EV =100Lux
3.5 µA
Lux Range (max) (lux)
10000
Output Voltage @ EV=100Lux
.185 V
Dark Voltage @ EV=0Lux
20 mV
Rise Time
68 µs
Fall Time
970 µs
Qualification Level
Standard
Delay Time, Rising Edge (μs)
145
Delay Time, Falling Edge (μs)
22
Package Dimensions (mm)
2.0x2.1x0.75
Pb Free?
Yes
Enable Pin?
No
Can Sample
YES
Temperature Range
-40 to +85

Confirm below disclaimers

Input Renesas account name and password