Name
Abstract | ||
|---|---|---|
This paper presents a low noise CMOS preamplifier for femtoampere detection. Based on a classical charge amplifier, a ping-pong technique is proposed to reset the charge amplifier, keeping the preamplifier stable even in a strong parasitic DC current. With a low reset frequency, the undesired folding noise is greatly reduced and the signal-to-noise ratio (SNR) at the output can be kept almost constant. The simulation results show that using the proposed preamplifier, the output SNR can still be 72 for an input current of 200fA among a parasitic DC current of 100pA. The dynamic range is observed over 120dB. |
Year | DOI | Venue |
|---|---|---|
2008 | 10.1109/ISCAS.2008.4541862 | ISCAS |
Keywords | Field | DocType |
dynamic range,noise reduction,charge amplifier,low frequency noise,cmos integrated circuits,feedback,resonant frequency,signal to noise ratio,preamplifiers | Preamplifier,Dynamic range,Computer science,Control theory,Signal-to-noise ratio,Electronic engineering,Low noise,CMOS,Charge amplifier,Dc current,Electrical engineering | Conference |
ISSN | ISBN | Citations |
0271-4302 | 978-1-4244-1684-4 | 1 |
PageRank | References | Authors |
0.44 | 2 | 3 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Ming Zhang | 1 | 15 | 7.12 |
| Nicolas Llaser | 2 | 16 | 8.11 |
| Hervé Mathias | 3 | 12 | 5.30 |