
DEC. 2000
DA-TYPE SOCKET
ASSEMBLIES
C7247 SERIES
The C7247 series is a DA type socket assembly designed for 28 mm (1-1/8 inch) diameter side-on and head-on
photomultiplier tubes. The C7247 series socket assembly incorporates a voltage-divider circuit and a current-to-voltage
conversion circuit along with an amplifier having a wide bandwidth (0 Hz to 5 MHz).
The C7247 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/
μ
A.
Since the C7247 series employs an active voltage-divider circuit, it ensures an excellent DC linearity at low power
consumption.
FEATURES
Low power consumption
Low offset voltage
Wide frequency band
Compact and light weight
SPECIFICATIONS
MAXIMUM RATINGS
Parameter
Parameter
Value
±
18
-1500
0 to +40
-15 to +60
Unit
V dc
V dc
C
C
Parameter
Unit
V dc
mA Typ.
V dc
μ
A Typ.
V/
μ
A
V
V
μ
A
μ
A
–
C7247
Unit
–
–
Input Voltage for Amplifier
Input Current for Amplifier (at
±
15 V)
Recommended Supply Voltage for Divider
Divider Current
Current to Voltage Conversion Factor
Maximum Output Voltage (with no load resistor)
Output Voltage (with 50
load resistor)
Maximum Input Signal Current
(at 10 V output, HV=-1000 V with no load resistor)
±
12 to
±
15
a
12
Applicable Photomultiplier Tubes
Frequency Bandwidth (-3 dB)
Output Impedance
Offset Voltage
Output Noise Voltage
Total Power Consumption (at
±
15 V)
Weight
a
To be also practicable even with
±
5 V of input supply voltage except for narrow output range (2 V max).
28 mm Dia. Head-on
R374, R2228, R5929, R6095, etc
-300 to -600
166 (at HV=-600 V)
-400 to -900
219 (at HV=-900 V)
0.3
10
3
33
33
DC
Pulse
0 Hz to 5 MHz
50
±
3
9
mV Max.
mV rms. Typ.
mW Typ.
g Typ.
460 (at HV=-600 V)
50
558 (at HV=-900 V)
55
C7247-01
28 mm Dia. Side-on
R928, R3788, R3896, R4220, etc
C7247
C7247-01
GENERAL
Input Voltage for Amplifier
Supply Voltage for Divider
Operating Temperature
Storage Temperature
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
Subject to local technical requirements and regulations, availability of products included in this promotional material may vary. Please consult with our sales office.