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C7246 Datasheet(PDF) 1 Page - Hamamatsu Corporation |
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C7246 Datasheet(HTML) 1 Page - Hamamatsu Corporation |
1 / 4 page DA-TYPE SOCKET ASSEMBLIES C7246 SERIES DEC. 2000 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 SPECIFICATIONS •Low power consumption •Low offset voltage •Adjustable gain function •Compact and light weight MAXIMUM RATINGS Parameter Parameter Value Unit Parameter Unit C7246 Unit Input Voltage for Amplifier ±12 to ±15a V dc Applicable Photomultiplier Tubes Input Current for Amplifier (at ±15 V) Recommended Supply Voltage for Dividerb Divider Current (at HV=-1000 V, VR=MIN)c Current to Voltage Conversion Factor 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 Adjustable Gain Range Total Power Consumption (at ±15 V, HV=-1000 V, VR=MIN) Weight 28 mm Dia. Head-on R374, R2228, R5929, R6095, etc 530 µA Typ. V dc µA Typ. -300 to -1000 211 -400 to -1000 174 0.3 V/ µA 10 V 0.9 V 33 µA 33 DC Pulse µA 0 Hz to 20 kHz – Ω mV Max. mV rms. Typ. dB Min. 30 10 mW Typ. g Typ. 227 50 190 55 50 ±0.3 0.09 C7246-01 C7246 C7246-01 28 mm Dia. Side-on R928, R3788, R3896, R4220, etc GENERAL Input Voltage for Amplifier ±18 V dc – – Supply Voltage for Divider Operating Temperature Storage Temperature -1500 V dc 0 to +40 ˚C -15 to +60 ˚C 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. 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. Maximum Output Voltage (with no load resistor) Output Voltage (with 50 Ω load resistor) PATENT |
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