1248 Phone: 1-800-222-6440 • Fax: 1-949-253-1680 S p e c t r o s c o p y I n s t r u m e n t s MONOCHROMATORS AND SPECTROGRAPHS BENCHTOP SPECTROMETERS MINISPECTROMETERS SINGLE CHANNEL DETECTION SYSTEMS AND CCD CAMERAS ACCESSORIES FOR FT-IR SPECTROMETERS SPECTROSCOPY INSTRUMENTS Oriel Current Preamplifier 70710 Current Preamplifier The 70710 is a low noise current-to-voltage amplifier, designed for photomultiplier tubes or photodiodes operating in the photovoltaic mode. It converts the low current output from many of our detectors, to a voltage signal for the Merlin™ Digital Lock-in (page 1222). Usable with These Oriel Detectors This preamplifier converts the current from the following Oriel Detectors to a voltage signal, for readout. Table 1 Compatible Oriel Detectors for 70710 Amplifier Oriel Detector Reference Page Number Any PMT page 1233 InGaAs page 1238 Silicon page 1236 Requires +/-15 V The 70710 must be powered by an external ±15 V supply such as our 70703 (page 1247). We provide a power cable with banana jack terminals for connection to the 70703 or other ±15 V source. • Converts current to voltage - ideal for PMTs and photodiodes • Low noise and wide dynamic range • Wide bandwidth - DC to 100 kHz Specifications Transimpedance 109, 108, 107, 106, 105, 104 V/A Maximum Input Impedance (DC) 8000 at 109 V/A Amplifier Bandwidth DC to 100kHz Accuracy ± 1 Linearity ± 1 % (for AC signals) Maximum Output ±10 V Noise (@1kHz, 106 V/A) <2.3 x 10-12 A Hz-1/2 Power Requirements ± 13 to ±18 V, 2 mA Weight 0.25 lb (0.1 kg) Ordering Information Model Description 70710 Current Preamplifier 70144 3 ft (1m) Long Cable (Connects 70710 to MerlinTM Digital Lock-in) 70703 Laboratory Power Supply, 115 V 70709 Laboratory Power Supply, 230 V See our website WEBfor more info 1.18 (30) 1.5 3.44 (38) (87) INPUT OUTPUT V/A MODEL 70710 TIME CONSTANT G A I N +15V 0 -15V MAX MED MIN 10 9 107 10 6 10 5 104 108 Fig. 1 Dimensional diagram of 70710 Current Preamplifier
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