R928 데이터 시트보기 (PDF) - Hamamatsu Photonics
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R928 Datasheet PDF : 4 Pages
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L: Hysteresis is temporary instability in anode current after light and voltage
are applied.
li
l max.
l min.
TIME
0
5
6
7 (minutes)
TPMSB0002EA
Hysteresis =
lmax. lmin. × 100 (%)
li
(1)Light Hysteresis
The tube is operated at 750 V with an anode current of 1 µA for 5 minutes.
The light is then removed from the tube for a minute. The tube is then
re-illuminated by the previous light level for a minute to measure the variation.
(2)Voltage Hysteresis
The tube is operated at 300 V with an anode current of 0.1 µA for 5 minutes.
The light is then removed from the tube and the supply voltage is quickly
increased to 800 V. After a minute, the supply voltage is then reduced to the
previous value and the tube is re-illuminated for a minute to measure the
variation.
Figure 2: Anode Luminous Sensitivity and Gain
Characteristics
TPMSB0003ED
105
108
TYPICAL GAIN
104
107
103
106
102
TYPICAL ANODE
105
SENSITIVITY
101
MINIMUM ANODE
104
SENSITIVITY
100
103
10-1
500
700
1000
SUPPLY VOLTAGE (V)
102
1500
Figure 4: Typical Temperature Coefficient of Anode
Sensitivity
TPMSB0005EB
160
800 nm
140
600 nm
120
100
400 nm
80
60
40
20
0
-30 -20 -10 0 +10 +20 +30 +40 +50
TEMPERATURE (°C)
Figure 3: Typical Time Response
TPMSB0004EC
100
80
60
40
20
TRANSIT TIME
10
8
6
4
RISE TIME
2
1
500
700
1000
1500
SUPPLY VOLTAGE (V)
Figure 5: Typical Temperature Characteristic of Dark Current
(at 1000 V, after 30 min storage in darkness)
TPMSB0006EB
100
10
1
0.1
0.01
-30 -20 -10 0 +10 +20 +30 +40 +50
TEMPERATURE (°C)
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