Charge SensitivePre-Amplifier [ TYPE : PA 320 ]
Technical Data
Charge sensitive Pre-amplifier PA320 is designed for use with gas filled proportional detectors, X-ray proportional detectors, BF-3 & He3 neutron detectors etc. Users will have the choice to change the load resistors & charge sensitive feedback capacitor according to the gain & sensitivity requirement for a specific application. Charge sensitive pre amplifier consists of an operational amplifier with capacitive feedback & uses an N-FET in the input stage. Output driver transistor is capable of driving a 100 ohms impedance coaxial cable
Detector output is also brought out from the second stage, for using it for data acquisition purpose. This unit is provided with built in comparator with threshold adjustment to give TTL output for counting applications.
Features
Specifications
| Detector Load Resistor | 10 M Ohms. |
|---|---|
| Output impedance | 100 Ohms. |
| Charge Sensitivity | 1000mv / pico coulombs for first stage. Followed by additional voltage gain stage. |
| Rise Time | Better than 100 nano seconds. |
| Decay Time Constant | 20 msec. (approx). |
| Charge Sensitive Device | Operational amplifier with FET in the front end. |
| Power Supply | +12V@ 20mA , -12V@ 10mA |
| Dimensions : | 155mm L X 95mmW X 50mmH. |
