ALS-PT19 Analog Light Sensor
ALS-PT19 Analog Light Sensor
ALS-PT19 Analog Light Sensor
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ALS-PT19 Analog Light Sensor

SKU: ELC1050

ā‚¹ 329.99 ā‚¹ 399.99

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ALS-PT19 Analog Light SensorWithout Soldered Pinā‚¹ 329.99
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The LX1972 is a low cost silicon light sensor with spectral response that closely emulates the human eye.Ā The patented circuit produces a maximum spectral response of 5% nm, less than IR with a response, maximum response, above nm.

The photographic sensor is an array of PIN diodes with a linear, precise and highly repeatable current transfer function.
High-gain current mirrors on the chip multiply the photographic current of the PIN diode at a sensitivity level that can be scaled with an external resistor of standard value.Ā The output current of this simple two-pin device can be used directly or converted to a voltage by placing it in series with a single resistor on either of its two pins.
The dynamic range is determined by the resistors (normally in the range of 10 K to 100 K) and the values ā€‹ā€‹of the power supply.Ā Normally, the LX1972 only needs 1.8 V of space to operate at 1000 Lux illumination.
The internal temperature compensation allows the dark current to remain below zero over the full specification.
Temperature range (-40 to + 85 Ā° C), providing high precision at low light levels.Ā The range of usable ambient light conditions is from 1 to more than 5000 Lux.
The LX1972 is optimized to control back lighting systems in low-cost consumer products such as LCD TVs, laptops and digital cameras.
  • Spectral response of the nearby human eye.
  • Very low IR sensitivity.
  • Highly precise and repeatable output current compared to light.
  • Scalable output voltage!
  • Stable temperature
  • High gain photographic amplifiers integrated.
  • No optical filters are needed.
Specifications

Resources

Datasheet

Sample Code

Tutorial

Ā 

How can I connect and read the output from this sensor?
The device is a two pin element. The output current can be used directly or converted to voltage by placing a resistor in series with one pin, typically in the 10K to 100K range. The dynamic range is set by the resistor value and the power supply, with typical operation around 1.8 V at 1000 Lux.
What is the spectral response and IR sensitivity of the sensor?
The spectral response closely emulates the human eye and has very low IR sensitivity, making it suitable for backlighting control.
What is the operating temperature range and how is dark current handled?
Temperature range is -40 to +85 C. Internal temperature compensation keeps the dark current below zero over the full specification.
What ambient light range can it handle and what are common use cases?
Usable ambient light ranges from 1 to more than 5000 Lux. It is optimized for back lighting control in LCD TVs, laptops and digital cameras and requires no optical filters.
What documentation and support are available for integration?
Documentation is available including the datasheet, sample code and tutorials. These resources guide integration and setup.
A
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Description
Ask AI about this product
Open in ChatGPT Open in Claude Open in Gemini

The LX1972 is a low cost silicon light sensor with spectral response that closely emulates the human eye.Ā The patented circuit produces a maximum spectral response of 5% nm, less than IR with a response, maximum response, above nm.

The photographic sensor is an array of PIN diodes with a linear, precise and highly repeatable current transfer function.
High-gain current mirrors on the chip multiply the photographic current of the PIN diode at a sensitivity level that can be scaled with an external resistor of standard value.Ā The output current of this simple two-pin device can be used directly or converted to a voltage by placing it in series with a single resistor on either of its two pins.
The dynamic range is determined by the resistors (normally in the range of 10 K to 100 K) and the values ā€‹ā€‹of the power supply.Ā Normally, the LX1972 only needs 1.8 V of space to operate at 1000 Lux illumination.
The internal temperature compensation allows the dark current to remain below zero over the full specification.
Temperature range (-40 to + 85 Ā° C), providing high precision at low light levels.Ā The range of usable ambient light conditions is from 1 to more than 5000 Lux.
The LX1972 is optimized to control back lighting systems in low-cost consumer products such as LCD TVs, laptops and digital cameras.
  • Spectral response of the nearby human eye.
  • Very low IR sensitivity.
  • Highly precise and repeatable output current compared to light.
  • Scalable output voltage!
  • Stable temperature
  • High gain photographic amplifiers integrated.
  • No optical filters are needed.
Specifications

Resources

Datasheet

Sample Code

Tutorial

Ā 

FAQ
How can I connect and read the output from this sensor?
The device is a two pin element. The output current can be used directly or converted to voltage by placing a resistor in series with one pin, typically in the 10K to 100K range. The dynamic range is set by the resistor value and the power supply, with typical operation around 1.8 V at 1000 Lux.
What is the spectral response and IR sensitivity of the sensor?
The spectral response closely emulates the human eye and has very low IR sensitivity, making it suitable for backlighting control.
What is the operating temperature range and how is dark current handled?
Temperature range is -40 to +85 C. Internal temperature compensation keeps the dark current below zero over the full specification.
What ambient light range can it handle and what are common use cases?
Usable ambient light ranges from 1 to more than 5000 Lux. It is optimized for back lighting control in LCD TVs, laptops and digital cameras and requires no optical filters.
What documentation and support are available for integration?
Documentation is available including the datasheet, sample code and tutorials. These resources guide integration and setup.
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A
Admin
Welcome to the discussion thread for ALS-PT19 Analog Light Sensor
Feel free to ask questions, share tips or report issues.
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Discover More In:

IR, UV, Laser, Light and Color ā†’ Sensors ā†’

Category: View all Sensor

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