Wideband (500 MHz) 16 bit dynamic range current mode PreAmplifier for the CTA cameras (PACTA)
Wideband (500 MHz) 16 bit dynamic range current mode PreAmplifier for the CTA cameras (PACTA)
复制标题
适用于 CTA 相机 (PACTA) 的宽带 (500 MHz) 16 位动态范围电流模式前置放大器
DOI：
10.1088/1748-0221/7/01/c01100
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发表时间：
2012
影响因子：
1.3
通讯作者：
J. Sieiro
中科院分区：
文献类型：
--
作者：
A. Sanuy;D. Gascón;J. Paredes;L. Garrido;M. Ribó;J. Sieiro
介绍了一种动态范围为16位的宽带电流模放大器。它是为切伦科夫望远镜阵列（CTA）的相机设计的。一种新颖的电流分配方案在电路的前端部分将输入电流分成两个缩放的电流，这两个缩放的电流连接到独立的电流镜。高增益路径的反射镜包括用于精确电流分配的饱和控制电路。本文给出了一个采用0.35 μ mSiGe工艺设计的专用集成电路的测试结果：带宽500 MHz，动态范围16位，输入参考噪声电流10 pA/sqrt（Hz），线性度误差小于3%。
A wideband current mode preamplifier with 16 bits dynamic range (DR) is presented. It has been designed for the cameras of the Cherenkov Telescope Array (CTA). A novel current division scheme at the very front end part of the circuit splits the input current into two scaled currents which are connected to independent current mirrors. The mirror of the high gain path comprises a saturation control circuit for accurate current division. Measurement results of an ASIC designed in Austriamicrosystems 0.35 μm SiGe technology are presented: 500 MHz BW, 16 bits DR, 10 pA/sqrt(Hz) input referred noise current and relative linearity error below 3%.