Characterization of SBRC-190: a multi-gain, cryogenic readout multiplexer for IR detector arrays

Characterization of SBRC-190: a multi-gain, cryogenic readout multiplexer for IR detector arrays
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SBRC-190 的特性:用于红外探测器阵列的多增益低温读出多路复用器

DOI:
10.1117/12.458589
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发表时间:
2003
期刊:
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影响因子:
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通讯作者:
Dzung T. Hoang
Dzung T. Hoang
中科院分区:
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文献类型:
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作者:
J. Farhoomand;D. L. Sisson;L. Yuen;Dzung T. Hoang

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SBRC-190读出多路复用器是一款1×32、多增益、容性跨导放大器(CTIA),特别适用于需要低偏置电平的红外探测器阵列,如Ge:Ga远红外探测器阵列。单元设计采用反馈回路,使探测器两端的偏置保持恒定,因此可以防止去偏置-这是远红外探测器的关键要求。我们已经测试了一些这些多路复用器在不同的低温温度下,下降到1.7K。在本演示中,我们将报告我们的测试结果,并将讨论增益,均匀性和裸复用器在相关双采样在4.2K的读噪声。
SBRC-190 readout multiplexer is a 1×32, multi-gain, capacitive transimpedance amplifier (CTIA) especially suitable for use with infrared detector arrays requiring low-bias levels--such as Ge:Ga far infrared detector arrays. The unit-cell design employs a feedback loop which keeps the bias across the detector constant and, therefore, prevents debiasing--a critical requirement for far infrared detectors. We have tested a number of these multiplexers at various cryogenic temperatures, down to 1.7K. In this presentation we will report the results of our tests and will discuss gain, uniformity, and read noise of the bare mux under correlated-double sampling at 4.2K.