Gated PMT Modules
H7680/-01
The H7680/-01 PMT modules are capable of high-speed, high-repetition ga-
ted operation. An optimum design in the combination of circuit and photomul-
tiplier tube delivers excellent gating characteristics including a minimum gate
width of 30 ns (H7680-01), 100 kHz repetition rate, and a gate extinction ratio
of 10
7
. The H7680/-01 can operate on a low +15 V supply because of incor-
porating high-voltage power suppy circuit. And, the incorporated PMT gain
can be controled by adjusting the control voltage between +2 V to +5 V.
Product Variations
Type No.
H7680
H7680-01
Spectral Response
300 nm to 650 nm
Normally ON type
Normally OFF type
Features
Specifications
Parameter
Supply Voltage
Max. Input Voltage
Max. Input Current
Max. Surge Current
Effective Area
Peak Sensitivity Wavelength
Pulse Linearity *
1
Max. Output Signal Current
Operating Ambient Temperature
Storage Temperature
Weight
H7680 / H7680-01
+14 to +16
+17
400
4.0
24
420
100
100
+5 to +40
-20 to +50
850
Unit
V
V
mA
A
mm
nm
mA
碌A(chǔ)
擄C
擄C
g
Parameter
Photocathode Material
Window Material
Dynode Structure
Number of Dynodes
Cathode Luminous Sensitivity
Character- Radiant Sensitivity *
2
istics
Blue Sensitivity Index (CS 5-58)
Luminous Sensitivity
Anode
Radiant Sensitivity *
2
Character-
Typ.
istics *
1
Dark Current
*3
Max.
Gain *
1
Rise Time
Time *
1
Transit Time
Response
TTS
H7680 / H7680-01
Bialkali
Borosilicate glass
Linear focused type
10
95
88
11.0
475
4.4
脳
10
5
10
200
5
脳
10
6
1.7
16
500
Unit
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
碌A(chǔ)/lm
mA/W
鈥?/div>
A/lm
A/W
nA
鈥?/div>
ns
ns
ps
*1: Control voltage = +4.5 V
*2: Measured at the peak sensitivity wavelength
*3: Measured when photomultiplier tube operation is ON. After 30 minute storage in darkness
52
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