基于InP DHBT工艺集成高速同步功能的13 GS/s单比特ADC  

A 13-GS/s One-Bit ADC with High Speed Synchronizing Circuits Based on InP DHBT Technology

作　　者：李晓鹏[1,2,3,4] 王志功 张翼[4,5] 张有涛 张敏[2,3] LI Xiao-peng;WANG Zhi-gong;ZHANG Yi;ZHANG You-tao;ZHANG Min(Institute of RF&OE ICs,Southeast University,Nanjing 210096,China;Nanjing Guo Bo Electronics Co.,Ltd,Nanjing 211153,China;Nanjing Electronic Devices Institute,Nanjing,210016,China;National and Local Joint Engineering Laboratory of RF Integration and Micro-assembly Technology,Nanjing 210046,China;College of Microelectronics,Nanjing University of Posts and Telecommunications,Nanjing 210046,China)

机构地区：[1]东南大学射频光电集成电路研究所,南京210096 [2]南京国博电子有限公司,南京211153 [3]南京电子器件研究所,南京210016 [4]射频集成与微组装技术国家地方联合工程实验室,南京210046 [5]南京邮电大学微电子学院,南京210046

出　　处：《微波学报》2019年第3期29-33,共5页Journal of Microwaves

基　　金：国家自然科学基金(61804081)

摘　　要：实现了一款集成同步电路的超高速超宽带单比特模数转换器(ADC),芯片采用锁存型高灵敏度比较器实现单比特量化,采用数字鉴相方法实现多芯片时钟自同步,集成1∶8数据分接器以降低输出端口数据速率,极大地方便了系统应用。该芯片采用0.7μm InP DHBT工艺实现,测试结果显示,芯片最高采样率达13 GS/s,模拟输入带宽大于18 GHz,输入灵敏度小于-25 dBm,功耗为1.4 W。该芯片解决国内缺乏单比特超宽带收发系统及单比特量化大规模天线系统中核心芯片的问题,与国外同类芯片相比,采用的自同步的同步电路,具有系统应用简单,可实现超高速采样时钟同步的特点,便于实现多通道同步采样。In this paper, an ultra-high-speed wide-band one-bit analog-to-digital converter(ADC) with integrated synchronization circuit is implemented. The chip uses a latch-type high-sensitivity comparator to realize one-bit quantization. It uses digital phase detection method to realize multi-chip clock self-synchronization and integrates 1∶8 demultiplexer to reduce the data rate of the output port, which greatly facilitates the application of the system. The chip is implemented in a 0.7 μm InP DHBT process. The measurement results show that the maximum sampling rate is 13 GS/s, the analog input bandwidth is greater than 18 GHz, the input sensitivity is less than-25 dBm and the power consumption is 1.4 W. The chip solves the problem of lacking core chips in single bit UWB transceiver system and single bit quantization large-scale antenna system in China. Compared with similar chips, the self-synchronization circuit adopted in this chip has the characteristics of simple system application, realizing ultra-high speed sampling clock synchronization and facilitating multi-channel synchronization sampling.

关 键 词：单比特量化 模数转换器 磷化铟 超宽带 同步电路 

分 类 号：TN792[电子电信—电路与系统]