ISL76671 Low Power, <100 Lux Optimized, Analog Output Ambient Light Sensor
The ISL76671 is a low-cost, light-to-voltage silicon optical sensor that integrates a photodiode array, a non-linear current amplifier, and a micro-power op amp on a single monolithic IC. It features peak sensitivity at 550nm, spanning 400nm to 600nm, effectively rejecting UV and IR light. The device is designed for measuring incident daylight, even behind heavily smoked bezels or mirrors, with an input luminance range from 0.01 lux to 100 lux. Its integrated non-linear current amplifier converts the photodiode signal into a square root output format, enhancing dynamic range and sensitivity in low-light conditions. A dark current compensation circuit minimizes temperature-dependent leakage currents, improving sensitivity at low lux levels. The built-in 1A op amp provides output voltage driving capability for ADCs. The ISL76671 is housed in a compact 2mmx2.1mm ODFN plastic surface mount package and operates from -40C to +105C, meeting AEC-Q100 Grade 2 specifications.
Product Attributes
- Brand: Intersil (implied)
- Package: 6 Ld ODFN (2mmx2.1mmx0.7mm)
- Certifications: AEC-Q100 Qualified, RoHS Compliant
- Material: Pb-free plastic
Technical Specifications
| Parameter | Description | Min | Typ | Max | Units |
| Input Light Intensity Range | For Square Root Relationship | 0.01 | - | 100 | Lux |
| Supply Voltage | VDD | 1.8 | 3 | - | V |
| Supply Current | At 0 lux, -40C to +60C | - | 0.7 | 2 | A |
| Supply Current | At 0 lux, -40C to +105C | - | - | 5 | A |
| Supply Current | At 100 lux | - | 23 | 35 | A |
| Light-to-Voltage Accuracy | At 10 lux | - | 0.65 | - | V |
| Light-to-Voltage Accuracy | At 50 lux | - | 1.35 | - | V |
| Light-to-Voltage Accuracy | At 100 lux | - | 1.4 | 2.3 | V |
| Voltage Output in Absence of Light | At 0 lux, -40C to +60C | - | 0.95 | 20 | mV |
| Voltage Output in Absence of Light | At 0 lux, -40C to +105C | - | - | 120 | mV |
| Output Voltage Variation | Over Fluorescent, Incandescent, Halogen | - | - | 10 | % |
| Power Supply Rejection Ratio | At 100 lux | - | 0.12 | - | mV/V |
| Maximum Output Compliance Voltage | At 95% of Nominal Output | - | VDD - 0.7 | - | V |
| Maximum Output Voltage Swing | - | - | VDD | - | V |
| Rise Time | 0 lux to 100 lux | - | 95 | - | s |
| Fall Time | 100 lux to 0 lux | - | 155 | - | s |
| Delay Time (Rising Edge) | 0 lux to 100 lux | - | 350 | - | s |
| Delay Time (Falling Edge) | 100 lux to 0 lux | - | 250 | - | s |
| Short Circuit Current (Op Amp) | - | -12 | - | 12 | mA |
| Slew Rate (Op Amp) | - | - | 13 | - | V/ms |
| Offset Voltage (Op Amp) | - | -0.9 | - | 0.9 | mV |
| Operating Temperature Range | - | -40 | - | 105 | C |
| Storage Temperature Range | - | -40 | - | 105 | C |
| Maximum Die Temperature | - | - | - | 105 | C |
| REXT Resistor Value | Recommended | - | 100 | - | k |
2106080034_RENESAS-ISL76671AROZ-T7A_C2655128.pdf
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