论文信息 - A Fully Differential Charge-Sensitive Amplifier for Dust-Particle Detectors

A Fully Differential Charge-Sensitive Amplifier for Dust-Particle Detectors

This paper presents the design and measurements of a fully differential charge sensitive amplifier operating in the frequency range from 7 Hz to 300 kHz. In comparison to the typically employed single input transistor topology, the shown differential approach greatly simplifies the suppression of common mode noise. The theory of the fully differential charge sensitive amplifier and analytical rules for the correct sizing of the feedback resistor and the input transistor are derived. Finally a double-cascode-amplifier is presented, achieving an equivalent noise charge of114 elementary charges rms in the 7 Hz to 300 kHz frequency band at 5.4 pF differential detector capacitance. The amplifier is realized in a $0.35~\mu \mathrm {m}$ standard CMOS technology and consumes 26.4 mW at 3.3 V supply voltage.

Markus Grozing | Manfred Berroth | Thomas Veigel | S. Kelz

[1] E. Grün,et al. The Electrostatic Lunar Dust Analyzer (ELDA) for the detection and trajectory measurement of slow-moving dust particles from the lunar surface , 2011 .

[2] P. O'Connor,et al. Prospects for charge sensitive amplifiers in scaled CMOS , 1999, 1999 IEEE Nuclear Science Symposium. Conference Record. 1999 Nuclear Science Symposium and Medical Imaging Conference (Cat. No.99CH37019).

[3] E. Grün,et al. Instrument concept of a single channel dust trajectory detector , 2017 .

[4] Kenneth F. Hatch. Aspects of Resolution Degradation in a Nuclear Pulse Analyzer System , 1968 .

[5] S. Auer,et al. Highly Transparent and Rugged Sensor for Velocity Determinations of Cosmic Dust Particles , 1994 .

[6] Massimo Manghisoni,et al. Resolution limits achievable with CMOS front-end in X- and γ-ray analysis with semiconductor detectors , 2003 .

[7] Sascha Kempf,et al. A Trajectory Sensor for Sub-micron Sized Dust , 2006 .