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Pyroelectric Infrared Detectors
Dual Element Detector
LHi 778
TO-5 housing
Competitive cost version
Designed for motion control
The LHi 778 pyroelectric infrared-detector series are the standard dual element
design recommended for all variants of motion control. They include a dual
element pyro-electric ceramic element with Fet in source follower connection.
LHi 778 detector is available in TO-5 housing with standard infrared filter. It
provides high responsivity with excellent common mode performance (match)
and low noise at steady state and temperature changes.
LHi 778
Parameters
min
typical
2x1
max
units
mm2
condition
2 elements
100°C, 1 Hz
Element size
Responsivity
3 300
4000
V/W
Match
1
10
%
Noise
20
50
µVpp
V
25°C, 0,3...10Hz
Offset Voltage
0,2
1,55
RS =47kW, 25°C
NEP
7,5
19
x
10-10
28
x
10-10
W ÖHz 1Hz Bw, 100°C, 1 Hz
cm ÖHz/W 1Hz Bw, 100°C, 1 Hz
7
7
D*
5
x10
x10
Output Impedance
Operating Voltage
5
10
15
kW
47kW Load Res.
RS =47kW, 25°C
2
V
Operating
Temperature
-40
-40
85
85
°C
°C
non permanent
non permanent
Storage Temperature
100
10
1
Sensing elements
(optically)
0,1
Bottom view
0,01
0,1
1
10
Dimensions in mm
f [Hz]
Frequency Response
USA:
Asia:
Europe:
PerkinElmer Optoelectronics
2175 Mission Colledge Blvd
Santa Clara, CA 95054
Phone +408 565 0830
Fax
PerkinElmer Optoelectronics
47, Ayer Rajah Crescent #06-12
Singapore 139947
Phone +65 775 2022
Fax
PerkinElmer Optoelectronics GmbH
Wenzel Jaksch Str 31
Wiesbaden / Germany
Phone +49(0)611 492 0
+408 565 0703
+65 775 1008
Fax
+49(0)611 492 170
www.perkinelmer.com/opto