Metrum Information Storage Ltd

Data Acquisition, Thermography and Magnetic Media

 

Pyroelectric Infrared Detectors

 
Pyroelectic Single and Multi Element Infrared Detectors

Our range of Dias Pyroelectric single and multi-element infrared detectors, are designed for use in gas analysis, pyrometry, spectroscopy and security engineering applications.
By the use of modern Ion beam etching technology, these Lithium Tantalate detectors achieve a high specific detectivity, whilst being extremely low noise/microphony and having a low temperature dependency.
With Dias being able to offer custom IR filters and intergrated optics, a sensor is available to suit your specific application.
Click here to see example circuits for the voltage and current based sensors.
Linear Arrays with 128 or 256 Elements

Linear array packages are available with either 128 or 256 elements. These packages feature an integrated CMOS multiplexer, enabling simple operation. Again Dias can offer customised arrays and modules in varying sizes to suit your specific application needs.
 

Be sure to scroll all the way to the bottom of this page for further PDF details on the basics of Infrared detectors, example circuits and a copy of the infrared detector catalogue.

Individual specification sheets can be downloaded by clicking on the appropriate type link in the tables below.
 
Pyroelectric Single / Multi-Element Comparison Chart
Type Element Size Additional Absorber Thermal Compensation Sv (V/W)1.2 urn (nV/√Hz)1 D* (cm√Hz/W)1.2

Single-Element Detectors
LT - Standard Types
LT Q2 2mm x 2mm     300 150 4 - 108
LT Q1.2 1.2mm x 1.2mm     800 370 2.5 - 108
LT Q1 1mm x 1mm     1100 500 2 - 108
LT Q0.5 0.5mm x 0.5mm     3200 1500 1 - 108
LT G2 2mm x 2mm     300 170 3.5 - 108
LT G2PC 2mm x 2mm   x 150 100 3 - 108
LT D2.5 Ø 2.5mm     220 140 4 - 108
LT D2 Ø 2mm     360 190 3.5 - 108
LT D1 Ø 1mm     1200 700 2 - 108
LTI Q23 2mm x 2mm     250 80 8 - 108
LTI Q1.23 1.2mm x 1.2mm     700 120 6.5 - 108
LTI Q13 1mm x 1mm     900 160 6 - 108
LTI Q0.53 0.5mm x 0.5mm     3500 500 3 - 108
LTI D23 Ø 2mm     300 80 8 - 108
LTI D13 Ø 1mm     1200 200 5 - 108
LTI Q2/1003.5 2mm x 2mm     300000 100000 8 - 108

LTA - Types with increased Absorption
LTA G2 2mm x 2mm x   400 170 4.5 - 108
LTA G2PC 2mm x 2mm x x 200 100 3.7 - 108
LTAI G23 2mm x 2mm x   300 100 6 - 108
LTA G2I105 2mm x 2mm x   15000 20000 1.5 - 108
LTA G2I10PC5 2mm x 2mm x x 14000 20000 1.4 - 108
LTA G2I1005 2mm x 2mm x   70000 20000 2.5 - 108
LTA G2I100PC5 2mm x 2mm x x 65000 20000 2.3 - 108

LTS - Types with Silver Black
LTS Q2 2mm x 2mm x   420 150 5 - 108
LTS Q1.2 1.2mm x 1.2mm x   1200 370 3.5 - 108
LTS Q1 1mm x 1mm x   1600 500 3 - 108
LTS D2.5 Ø 2.5mm x   340 140 6 - 108
LTS D2 Ø 2mm x   520 190 5 - 108
LTS D1 Ø 1mm x   1800 700 2.5 - 108
LTSI Q23 2mm x 2mm x   350 80 9 - 108
LTSI Q1.23 1.2mm x 1.2mm x   900 120 9 - 108
LTSI Q13 1mm x 1mm x   1300 150 8 - 108
LTSI D23 Ø 2mm x   450 80 9 - 108
LTSI D13 Ø 1mm x   1600 200 7.5 - 108
LTSI Q2I1005 2mm x 2mm x   450000 100000 1 - 108

Multi-Channel Detectors
2LTA G2 2x 2mm x 2mm x   300 170 3.4 - 108
2LTA G2PC 2x 2mm x 2mm x x 150 100 3 - 108
3LTA G2 3x 2mm x 2mm x   300 170 3.4 - 108
3LTA G2PC 3x 2mm x 2mm x x 150 100 3 - 108
4LTA G2 4x 2mm x 2mm x   300 170 3.4 - 108
 
Pyroelectric Linear Arrays 128LTx and 256LTx
Type Pixel No Pixel width µm Pixel Length µm Pitch Responsivity  Sv in V/W Noise Voltage Un in mv NEP (nW) MTF (R=eIp/mm) Uniformity2 of Sv in %
128LT 128 90 100 100 230000 0.7 3.0 0.6 5
128 LTI 128 90 100 100 540000 0.8 1.5 0.6 5
128 LT SP0.5 128 90 500 100 230000 0.9 3.9 0.6 5
128 LTI SP0.5 128 90 500 100 540000 1.2 2.2 0.6 5
128 LT SP1.0 128 90 1000 100 230000 1.1 4.9 0.6 5
128 LTI SP1.0 128 90 1000 100 540000 1.9 3.5 0.6 5
256LTI 256 42 100 50 620000 0.7 1.1 0.6 5
256 LTI SP0.5 256 42 500 50 620000 0.9 1.4 0.6 5
256LTI SP1.0 256 42 1000 50 620000 1.1 1.8 0.6 5

View main catalogue at bottom of page for details.
128 AND 256 LTx Specification
Operating Voltage VDD 5 V
Operating Voltage VD2 2.5 V
Digital Inputs, low voltage <0.3 VDD
Digital Inputs, high voltage >0.7 VDD
Digital Inputs, switching threshold 0.5 VDD
Chopping Frequency 10 Hz to 512 Hz
Current Consumption 8 mA
Maximum Irradiance 50 mW/mm2
Operating Temperature -15 to +70°C
Storage Temperature -20 to +80°C
Soldering Temperature 300°C
 

Downloads:

General Overview and catalogue of the Dias Pyroelectric Range

The basics of infrared detectors

Example Circuits for single and multi-element detectors