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TSL2772 Datasheet Preview

TSL2772 Datasheet

Light-to-Digital Converter

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TSL2772
Light-to-Digital Converter with
Proximity Sensing
General Description
The TSL2772 device family provides both ambient light sensing
(ALS) and, when coupled with an external IR LED, proximity
detection. The device family is based on the ams patented
dual-diode technology that enables accurate ALS results and
approximates human eye response to light intensity under a
variety of lighting conditions.
The TSL2772 ALS includes a reduced-gain mode that extends
the operating range to 60k lux in sunlight. The device package
incorporates a UV-rejection filter that enables accurate ALS. The
TSL2772 proximity detection includes improved
signal-to-noise performance and selectable gain modes. A
proximity offset register allows compensation for optical
system crosstalk between the IR LED and the sensor. To prevent
false proximity data measurement readings, a proximity
saturation indicator bit signals that the internal analog circuitry
has reached saturation.
Ordering Information and Content Guide appear at end of
datasheet.
Figure 1:
Added Value Of Using TSL2772
Key Benefits & Features
The benefits and features of TSL2772, Light-to-Digital
Converter with Proximity Sensing are listed below:
Benefits
Features
Enables Operation in IR Light Environments
Patented Dual-Diode Architecture
Enables Operation in 60K Lux Sunlight and Accurate
Sensing Behind Spectrally Distorting Materials
Improves Lux Accuracy Across Varying Light Sources
Compensates for Internal System Offset or IR LED
Crosstalk
8M:1 Dynamic Range
UV-Rejection Package
Proximity Offset Adjustment
Prevents False Proximity Detection in Bright Light
Proximity Saturation Indicator Bit
ams Datasheet
[v1-00] 2016-Aug-26
Page 1
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ams

TSL2772 Datasheet Preview

TSL2772 Datasheet

Light-to-Digital Converter

No Preview Available !

TSL2772 − General Description
Ambient Light Sensing and Proximity Detection in a Single
Device
Ambient Light Sensing (ALS)
• Approximates Human Eye Response
• Programmable Analog Gain and Integration Time
• 8000000:1 Dynamic Range
• Operation to 60000 lux in Sunlight
• Very High Sensitivity — Ideally Suited for Operation
Behind Dark Glass
• Package UV Rejection Filter
Proximity Detection
• Programmable Analog Gain, Integration Time, and
Offset
• Current Sink Driver for External IR LED
• Saturation Indicator
• 16000:1 Dynamic Range
Maskable ALS and Proximity Interrupt
• Programmable Upper and Lower Thresholds with
Persistence Filter
Power Management
• Low Power 2.2μA Sleep State with User-Selectable
Sleep-After-Interrupt Mode
• 90 μA Wait State with Programmable Wait Time from
2.7 ms to > 8 seconds
I²C Fast Mode Compatible Interface
• Data Rates up to 400 kbit/s
• Input Voltage Levels Compatible with VDD or 1.8-V Bus
Register Set- and Pin-Compatible with the TSL2x71 Series
Small 2 mm × 2 mm Dual Flat No-Lead (FN) Package
Applications
TSL2772, Light-to-Digital Converter with Proximity Sensing is
ideal for:
Display Backlight Control
Cell Phone Touch Screen Disable
Mechanical Switch Replacement
Industrial Process Control
Medical Diagnostics
Printer Paper Alignment
Page 2
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ams Datasheet
[v1-00] 2016-Aug-26


Part Number TSL2772
Description Light-to-Digital Converter
Maker ams
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TSL2772 Datasheet PDF






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