HAMAMATSU C7247-01, C7247 Datasheet

DA-TYPE SOCKET
ASSEMBLIES

DEC. 2000

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/ µA.
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

Parameter

Applicable Photomultiplier Tubes

R374, R2228, R5929, R6095, etc

MAXIMUM RATINGS

Parameter

Input Voltage for Amplifier
Supply Voltage for Divider
Operating Temperature
Storage Temperature

GENERAL

Parameter

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 Ω load resistor)
Maximum Input Signal Current

(at 10 V output, HV=-1000 V with no load resistor)
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).

DC
Pulse µA

C7247

28 mm Dia. Head-on

C7247 C7247-01

-400 to -900

219 (at HV=-900 V)

558 (at HV=-900 V)

55

C7247-01

28 mm Dia. Side-on

R928, R3788, R3896, R4220, etc

Value Unit

±18

-1500 V dc

0 to +40 ˚C

-15 to +60 ˚C

±12 to ±15

0 Hz to 5 MHz

a

12 mA Typ.

-300 to -600

166 (at HV=-600 V)

0.3 V/µA
10 V

3V
33 µA
33

50
±3

9

460 (at HV=-600 V)

50

Unit

–
–

V dc

Unit

V dc

V dc

µA Typ.

–

Ω

mV Max.

mV rms. Typ.

mW Typ.

g Typ.

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

DA-TYPE SOCKET ASSEMBLIES C7247 SERIES

Figure 1. Schematic Diagram

K

DY1 DY2 DY3 DY4 DY5 DY6 DY7 DY8 DY9 DY10 DY11

-HV

Figure 2. Frequency Response of Built-in Amplifier

C2C1

C3 C4

TRANSISTOR

CIRCUIT

P

AMP

C1, C2: 0.01
C3: 0.022 µF
C4: 0.047 µF

SIGNAL OUTPUT

50 Ω

µF

TACCC0115EB

TACCB0065EB

10

5

0

-5

-10

RELATIVE GAIN (dB)

-15

-20

0.01 1000.1

-3dB

110

FREQUENCY (MHz)