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Digital ST120 Dual Thermopile (Preliminary)

Features

A two channel silicon- based thermopile in a TO-5 package that includes integrated electronics which incorporate an industry standard digital SMBus interface. Each small active area size is 1.2mm x 1.2mm.

Applications

Excellent for gas analysis, environmental monitoring, HVAC and smart home/building control

Benefit

The digital platform supports easy integration and provides rapid development due to the integrated amplifier, A/D, DSP, MUX and communication protocol.

Options

  • See Standard Windows and Filters (PDF) for list of optical filter options.
  • Available in 3V or 5V configurations.
  • Detector Circuit Overlay

    Detector Circuit Overlay

Datasheet

For more detailed information see the datasheet:

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Digital ST120 Dual 205.06 KB
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Parameter Min Typical Max Symbol Units Comments
Active Area size 1.2 x 1.2 AA mm Hot junction size, per element.
Element Area 1.44 A mm2
Number of Junctions 80 Per element.
Number of Channels 2 Per detector package.
Digital Output 811 970 1247 Counts With KBr window. DC, H=330µW/cm2 (3)
Temperature Coefficient of -.04 %/°C Best linear fit, 0° to 85°C (1)
Time Constant 25 Τ ms Detector without electronics, Chopped, -3dB point (1)
Field of View 8°/60° FOV Degrees See Assembly Drawings for FOV Description.
Package Type TO-5 Standard package hole size: (2) .060” sq. holes
Operating Temperature -40 85 °C
Temperature Sensor 6638 6670 6707 Counts
Temperature Coefficient of  R 22.9 Counts/°C

General Specifications:

Flat spectral response from 100nm to > 100µm. Linear signal output from 10⁻⁶ to 0.1W/cm². Maximum incident Radiance 0.1W/cm², damage threshold ≥ .5W/cm²

Notes:

(1) Parameter is not 100% tested. 90% of all unites meet these specifications.
(2) A is detector area in cm².
(3) Test Conditions: 500K Blackbody source; Detector active surface 10cm from 0.6513cm Diameter Blackbody Aperture.

Technical Library

  • Icon
    Introduction to Thermopile Detectors 157.34 KB
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  • Icon
    Infrared Radiation and Radiometry Introduction 131.12 KB
    Download
  • Icon
    Emissivity Correction for a Radiometer 120.07 KB
    Download
  • Icon
    Thermopile Time Constant Determination 102.89 KB
    Download

Browse our comprehensive Technical Library

Watch more in our Thermopile video series

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Phone: +1 (734) 426-3921 | Fax: +1 (734) 426-5090 | info@dexterresearch.com

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