2M Quad

Features

A four-channel thin-film thermopile in a TO-8 package. Each active area is 2mm x 2mm. Offers the world’s highest 4-channel sensitivity with exceptional signal-to-noise performance in a TO-8 package. Internal aperture minimizes channel-to-channel crosstalk while increasing sensitivity.

Applications

Gas analysis for automotive, environmental air quality, industrial sensors and medical monitoring.

Benefit

Extremely high output with the best signal-to-noise performance with a time constant of 85ms when encapsulated in Argon gas.

Options

See Standard Windows and Filters (PDF) for list of optical filter options.
Order this unit encapsulated with Xenon and this becomes a super-high output detector with very low noise.
See Thermopile Configuration Table for more options.
Internal 30kΩ 5% NTC chip thermistor provides ambient package temperature measurement. See DC-4005 section of Thermistor Options (PDF).

2M Quad Thermopile Detector
2M Quad Detector circuit overlay

Datasheet

For more detailed information see the datasheet:

2M Quad 283.77 KB

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Parameter	Min	Typical	Max	Symbol	Units	Comments
Active Area size	2 x 2			AA	mm	Hot junction size, per element.
Element Area		4		A	mm²
Number of Junctions		48				Per element.
Number of Channels		4				Per detector package.
Output Voltage	200	250	300	V_s	μV	DC, H=330μW/cm² (3)
Signal-to-Noise Ratio	12,739	19,531	33,333	SNR	√Hz	DC, SNR=V_s/V_n
Responsivity	15.2	18.9	22.7		V/W	DC, =V_s/HA (2)
Resistance	5	10	15	R	kΩ	Detector element
Temperature Coefficient of		-.36			%/°C	Best linear fit, 0° to 85°C (1)
Temperature Coefficient of R		-.2			%/°C	Best fit, 0° to 85°C (1)
Noise Voltage	9.0	12.8	15.7	V_n	nV/√Hz	V_n²=4kTR
Noise Equivalent Power	.40	.68	1.03	NEP	nW/√Hz	DC, NEP= V_nHA/V_s (2)
Detectivity	1.9	3.0	5.0	D*	10⁸√Hz/W	DC, D*=V_s/ V_nH√A (2)
Time Constant		85		Τ	ms	Chopped, -3dB point (1)
Field of View		N/A		FOV	Degrees	See Assembly Drawings for FOV Description.
Package Type		TO-8 w/12 Pins				Standard package hole size:Ø.437
Element Matching		5	10	M	%	M=\|V_A-V_B\|/V_B (2)
Element Separation		4.57			mm	Center to Center
Operating Temperature	-50		100	T_a	°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 units 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.