C7246 Просмотр технического описания (PDF) - Hamamatsu Photonics
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C7246 Datasheet PDF : 4 Pages
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DEC. 2000
DA-TYPE SOCKET
ASSEMBLIES
C7246 SERIES
PATENT
The C7246 series is a DA type socket assembly designed for 28 mm (1-1/8 inch) diameter side-on and head-on
photomultiplier tubes. The C7246 series socket assembly incorporates a voltage-divider circuit and a current-to-voltage
conversion circuit along with an amplifier that has a narrow but practical bandwidth (0 kHz to 20 kHz) to improve the
effective S/N ratio.
The C7246 series converts the low-level, high-impedance current of a photomultiplier tube into a low-impedance
voltage output by a factor of 0.3 V/ µA.
Since the C7246 series employs an active voltage-divider circuit, it ensures an excellent DC linearity at low power
consumption and a gain adjustment function that does not affect the frequency bandwidth of the amplifier.
FEATURES
•Low power consumption
•Low offset voltage
•Adjustable gain function
•Compact and light weight
SPECIFICATIONS
Parameter
Applicable Photomultiplier Tubes
C7246
C7246-01
28 mm Dia. Head-on 28 mm Dia. Side-on
R374, R2228, R5929, R6095, etc R928, R3788, R3896, R4220, etc
Unit
–
–
MAXIMUM RATINGS
Parameter
Input Voltage for Amplifier
Supply Voltage for Divider
Operating Temperature
Storage Temperature
Value
±18
-1500
0 to +40
-15 to +60
Unit
V dc
V dc
˚C
˚C
GENERAL
Parameter
C7246
C7246-01
Unit
Input Voltage for Amplifier
±12 to ±15a
V dc
Input Current for Amplifier (at ±15 V)
Recommended Supply Voltage for Dividerb
Divider Current (at HV=-1000 V, VR=MIN)c
530
-400 to -1000
-300 to -1000
174
211
µA Typ.
V dc
µA Typ.
Current to Voltage Conversion Factor
0.3
V/µA
Maximum Output Voltage (with no load resistor)
10
V
Output Voltage (with 50 Ω load resistor)
0.9
V
Maximum Input Signal Current
DC
33
µA
(at 10 V output, HV=-1000 V with no load resistor) Pulse
33
µA
Frequency Bandwidth (-3 dB)
0 Hz to 20 kHz
–
Output Impedance
50
Ω
Offset Voltage
Output Noise Voltage
±0.3
mV Max.
0.09
mV rms. Typ.
Adjustable Gain Range
10
30
dB Min.
Total Power Consumption (at ±15 V, HV=-1000 V, VR=MIN)
190
227
mW Typ.
Weight
55
50
g Typ.
a To be also practicable even with ±5 V of input supply voltage except for narrow output range (2 V max).
b Use more than 600 V at negative high voltage input from view-points of output linearity, when giving more than 10 µA at signal input (anode out).
c "VR = MIN." means that the PMT gain is set to minimum gain.
Subject to local technical requirements and regulations, availability of products included in this promotional material may vary. Please consult with our sales office.
Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions. Specifications are
subject to change without notice. No patent rights are granted to any of the circuits described herein. ©2000 Hamamatsu Photonics K.K
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