McPherson - Model 671MX - Vacuum-Safe Amplifier
From Detectors and Visualization Systems for Spectroscopy - VUV Si Detector
The new Model 671MX preamplifier is a stable low noise tool for converting Silicon photodiode current to an output voltage. Features an integral socket to mount a McPherson VUV photodiode. Ideal for detection of UV, EUV and x-ray (wavelength range 1100 nm to .124 nm, energy range 1.13 eV to 1 keV) photons.
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Product Details
The new Model 671MX preamplifier is a very stable and low noise tool for converting current from Silicon photodiode detectors to a programmed output voltage. It has an integral socket to mount a McPherson VUV photodiode. They are used for the detection of UV, EUV and x-ray (wavelength range 1100 nm to .124 nm, energy range 1.13 eV to 1 keV) photons. Unlike common p-n junction diodes, the photodiodes do not have a dead region and have zero surface recombination. These devices detect the complete photon spectral rage (0.0124 nm to 1100 nm) because of their extremely thin oxide window and 100% internal quantum efficiency.
The 671MX is especially for use in a high vacuum environment. The circuit board is high grade ceramic and uses all vacuum compatible components.
The 671MX comes with three resistors to adjust the gain. The use sets the gain by removing the previous resistor and replacing it with one of the other resistors. Other resistors are available upon request. It is important to note, some resistors are special order and have significant lead times.
Programmable Gain | Lower Noise | Vacuum Safe | Connection Pins Included
Technical Specifications
- Power Input: +15 / -15 VDC
- Maximum Current Input: 10 μamps
- Min / Max Operating Temperature: 0° / 70° C
- Vacuum Operation: 5 X 10e-6 Torr
- Offset Drift: 20 μvolts / °C
- Dimensions (inches): 1.25 inch Diameter
- Weight without power supply (pounds): < 0.25
Power Supply Specifications
- AC Power Input 100 – 240 VAC, 25 Watts
- +15 VDC Current Out, Max. 0.50 Amps
- -15 VDC Current Out, Max. 0.30 Amps
- Universal input +/- 15 VDC Power Supply available, please inquire
Ordering
- Model 671MX
- Part Number 135-113253-0
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