In this study, a 4 bit, 16 giga samples per second analog-to-digital converter (ADC) printed circuit board assembly (PCBA) was designed, manufactured, and characterized for digitizing signals from radio telescopes. For this purpose, an Adsantec ANST7123-KMA flash ADC chip was used. Because this design of chip is not followed the serial ADC JESD204 standard completely, we used a novel channel bonding scheme developed in our previous project for the high-speed serial data input alignment. The PCBA was equipped with a field-programmable gate array (FPGA) mezzanine card (FMC) connector. FMC allowed us to use the FPGA evaluation board by Xilinx as the testing platform. The PCBA enables data acquisition with a wide bandwidth and simplifies the intermediate frequency section. In the current version, the PCBA and the chip exhibit an analog bandwidth of 16 GHz, which facilitates a second Nyquist sampling. The following minimum to maximum performance parameters were obtained from the firs...

中文翻译：

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一种用于射电天文的低成本4位每秒16兆采样的模数转换器

在这项研究中，设计，制造了一个4位，每秒16 giga采样的模数转换器（ADC）印刷电路板组件（PCBA），并对其进行了特性化，以数字化射电望远镜的信号。为此，使用了Adsantec ANST7123-KMA闪存ADC芯片。由于该芯片的设计未完全遵循串行ADC JESD204标准，因此我们使用了在先前项目中开发的新颖通道绑定方案来实现高速串行数据输入对齐。PCBA配备了现场可编程门阵列（FPGA）夹层卡（FMC）连接器。FMC允许我们使用Xilinx的FPGA评估板作为测试平台。PCBA使数据采集具有较宽的带宽，并简化了中频部分。在当前版本中，PCBA和芯片的模拟带宽为16 GHz，这有助于第二次Nyquist采样。从第一轮获得了以下最低到最高性能参数：