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首页> 外文期刊>IEEE Journal of Solid-State Circuits >An 11-bit high-resolution and adjustable-range CMOS time-to-digital converter for space science instruments
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An 11-bit high-resolution and adjustable-range CMOS time-to-digital converter for space science instruments

机译:用于太空科学仪器的11位高分辨率和可调范围CMOS时数字转换器

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摘要

An 11-bit time-to-digital converter (TDC) with high time resolution implemented in CMOS VLSI is presented. The TDC operates with a wide and clock-adjustable resolution of LSB = 50 ps to 1 ns, and with good power supply, temperature, and environmental effects compensation. The dead time of the measurement is as low as 0.5 Μs and the event rate can be as high as 1 MEvents/s. The power dissipation is a function of event rate and clock frequency; the TDC dissipates <10 mW at an event rate of 100 kEvents/s and LSB=100 ps. The TDC was incorporated in a complete time-of-flight (TOF) system on a chip that in addition included front-end analog signal processing. The TOF chip is already flying onboard the HENA (High Energy Neutral Atoms) instrument of the IMAGE NASA mission, launched in 2000, and is part of many other instruments such as particles, X-ray, and the laser altimeter of the Messenger spacecraft.
机译:提出了在CMOS VLSI中实现的具有高分辨率的11位时间数字转换器(TDC)。 TDC具有LSB = 50 ps至1 ns的宽且可时钟调节的分辨率,并具有良好的电源,温度和环境影响补偿。测量的停滞时间低至0.5毫秒,事件发生率可高达1兆事件/秒。功耗是事件速率和时钟频率的函数; TDC在100 kEvents / s的事件速率和LSB = 100 ps的事件速率下耗散<10 mW。 TDC集成在完整的飞行时间(TOF)系统的芯片上,此外还包括前端模拟信号处理。 TOF芯片已经在2000年发射的IMAGE NASA任务的HENA(高能中性原子)仪器上飞行,并且是许多其他仪器(如粒子,X射线和Messenger航天器的激光高度计)的一部分。

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