A time domain multiplexer for large arrays of high impedance low temperature bolometers

被引：8

作者：

Benoit, A. ^{[1
,3
]}

Yates, S. J. C. ^{[1
,3
]}

Gremion, E. ^{[2
]}

Camus, P. ^{[1
,3
]}

Durand, T. ^{[1
,3
]}

Hoffmann, C. ^{[1
,3
]}

Leclercq, S. ^{[1
,3
]}

Monfardini, A. ^{[1
,3
]}

Cavanna, A. ^{[2
]}

Etienne, B. ^{[2
]}

Gennser, U. ^{[2
]}

Jin, Y. ^{[2
]}

机构：

[1] Univ Grenoble 1, F-38042 Grenoble 9, France

[2] CNRS, LPN, F-91460 Marcoussis, France

[3] CNRS, Inst NEEL, F-38042 Grenoble 9, France

来源：

JOURNAL OF LOW TEMPERATURE PHYSICS | 2008年 / 151卷 / 3-4期

关键词：

LTD; low temperature electronics; detector arrays; multiplexing;

D O I：

10.1007/s10909-008-9770-1

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present a time domain multiplexer for high impedance bolometer arrays. It is based on the use of quantum-point-contact high-electron-mobility-transistors (QPC-HEMTs) as low temperature switches and a cold FET amplifier with programmable auto-zero-circuit. We employ the high bolometer resistance (about 10 M Omega) in parallel with a capacitance as antialiasing filter. A new generation of QPC-HEMT reaches a noise level close to the expected one. We will use this approach to multiplex the pixels of a mm-wave bolometric camera destined for the 30 meter IRAM telescope at Pico Veleta.

引用

页码：940 / 945

页数：6

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