高级检索

NICA MPD ITS前端数据汇总与传输原型芯片中LVDS收发器的设计

Design of LVDS Transceiver in NICA MPD ITS Front-end Data Collection and Transfer Chip

  • 摘要: NICA(Nuclotron-based Ion Collider fAсility)是中俄联合研究建造的重离子超导同步加速器装置,针对NICA MPD(Multipurpose Detector)中内径迹系统(Inner Tracker System, ITS)前端数据汇总与传输原型芯片NICA ROC(NICA Readout and Control)数据收发的需求,定制化设计了一款LVDS(Low Voltage Differential Signaling)高速串行接口电路,作为NICA ROC与前端读出专用集成电路(Application Specific Integrated Circuit, ASIC)之间的数据交互接口,其中发送器采用预加重技术以减小码间干扰(Inter Symbol Interference, ISI)。基于130 nm CMOS工艺,完成了LVDS接收器和发送器的电路设计、性能仿真以及版图设计,并进行了流片。经测试,该LVDS高速串行接口电路可实现800 Mbps的接收和发送数据率、输出差模电压约为260 mV、误码率小于1 \times 10^-13,一对LVDS收发器的总功耗约为9.5 mW,满足NICA ROC芯片的设计要求。

     

    Abstract: NICA(Nuclotron-based Ion Collider fAcility) is a heavy ion collider based on superconducting particle accelerator developed by China and Russia. According to the requirements of data receiving and sending in NICA ROC(NICA Readout and Control) ASIC, designed for ITS front-end data collection and transmission in NICA MPD, a Low Voltage Differential Signaling(LVDS) high-speed serial interface circuit is designed as the data interface between NICA ROC and front-end readout ASICs, and the pre-emphasis technique is employed to reduce the inter-symbol interference. Based on 130 nm CMOS technology, the circuit design, simulation, layout design, and tape-out of LVDS receiver and driver have been completed. A test system is designed for this high-speed serial interface chip. The test results show that the LVDS transceiver can achieve 800 Mbps receiving and transmitting data rate, and the differential output voltage is about 260 mV, with the Bit Error Ratio(BER) less than 1 \times 10^-13. The power consumption of a pair of LVDS transceiver is approximately 9.5 mW. This design meets the design requirements of NICA ROC ASIC.

     

/

返回文章
返回