A Low Noise High Gain Bandwidth Charge Sensitive Preamplifier
The concept of the charge-sensitive amplifier is discussed, and a method for obtaining a high-gain amplifier stage through the use of a positive-current- feedback dynamic plate load is described. It is shown that under certain conditions this type of feedback can provide increased bandwidth as well as increased low-frequency gain. The schematic of a preamplifier embodying these principles is given and its performance is described. The measured noise, with no external capacitance, is 510 rms electrons for equal integration and differentiation time constants of 1 mu sec. The measured risetimes for closed- loop gains of 100 and 1000 are 25 and 96 nanoseconds respectively. Linearity and gain sensitivity data are also included.
- Research Organization:
- Columbia Univ., New York
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-16-029139
- OSTI ID:
- 4805721
- Journal Information:
- IRE Transactions on Nuclear Science, Vol. 9, Issue 4; Other Information: Orig. Receipt Date: 31-DEC-62; ISSN 0096-2015
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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