C7950 Datasheet, PDF (1/2 Pages) Hamamatsu Corporation – HIGH VOLTAGE POWER SUPPLY SOCKET ASSEMBLY WITH WIDE BANDWIDTH AMPLIFIER

PRELIMINARY DATA
HIGH VOLTAGE POWER SUPPLY
SOCKET ASSEMBLY WITH WIDE
BANDWIDTH AMPLIFIER (DAP-TYPE)
C7950 SERIES
The C7950 series is a DAP type socket assembly designed for 28 mm (1-1/8") diameter, head-on and side-on photomultiplier tubes (PMT). The C7950
series socket assembly incorporates a regulated high voltage power supply, an active voltage divider and a current-to-voltage conversion circuit, along
with an amplifier having a wide bandwidth (0 Hz to 5 MHz).
The C7950 series converts the small-current high-impedance output of the PMT into a low-impedance voltage output with a conversion factor of 0.3 V/µA.
The C7950 series enables simple yet stable PMT operations by supplying ±15 V and connecting to control voltage (0 V to +3.6 V) for high voltage adjustments.
FEATURES
GWide Frequency Bandwidth
GFast High Voltage Programming Response
GWide High Voltage Output Range
GCompact and Lightweight
SPECIFICATIONS
GENERAL
Parameter
C7950
C7950-01
Applicable Photomultiplier Tube
28 mm dia. Side-On Type
28 mm dia. Head-On Type
(R5929, R6094 etc.)
Type of Voltage Divider
Active
Input Voltage Range
+14 to +16 / -14 to -16
Max. Input Voltage
+18 / -18
Input Current
+15 V
-15 V
Typ.
60
65
Typ.
20
Output Voltage
0 to -900
Maximum Input Signal Current (at 13 V output)
43
Line Regulation Against Input Change
Typ.
±0.03
HV Ripple Noise (peak to peak)
Typ.
0.03
Control Voltage / Output Voltage Ratio
1: -250
Output Voltage Control (External Controlling Voltage) Typ.
0 to +3.6
Settling Time ^A
Vcont: 3.6 V to 1.6 V
Typ.
Vcont: 1.6 V to 3.6 V
Typ.
300
80
Frequency Bandwidth (-3 dB)
0 Hz to 5 MHz
Current to Voltage Conversion Factor
0.3
Maximum Output Voltage (with no load resistor at 5 MHz)
13
Output Impedance
50
Offset Voltage
Typ.
±10
Output Noise Voltage (with no load resistor)
Typ.
Operating Ambient Temperature ^B
Storage Temperature ^B
8
0 to +40
-15 to +60
Weight
60
NOTE: A To be shown with the time period of setting to stable high voltage from changing control voltage (V cont).
B No condensation
Unit
—
—
V
V
mA
mA
V
µA
%
%
—
V
ms
ms
—
V/µA
Vp
Ω
mV
mV rms
°C
°C
g
Figure 1: Schmatic Diagram
PMT
SOCKET
WIDE BANDWIDTH
AMPLIFIER
50 Ω
ACTIVE
VOLTAGE
DIVIDER
HIGH VOLTAGE
POWER SUPPLY
* Cannot control HV output by a potentiometer.
SIGNAL OUTPUT (COAX)
-15 V INPUT (BLUE)
+15 V INPUT (RED)
Vcont INPUT (WHITE)
GND (SHIELD)
TACCC0125EA
Figure 2: Wire Connection
SIG OUT
(BLACK)
CONTROL
(GRAY)
V REF
HV ADJ
±15 V IN
(LIGHT-BLUE)
+15 V
-15 V
SHIELD
ORANGE
WHITE
SHIELD
RED
BLUE
SHIELD
SIG OUT
GND
NC
HV CONTROL
(0 V to +3.6 V)
GND
+15 V
-15 V
GND
TACCC0126EA
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. ©2005 Hamamatsu Photonics K.K.