【摘要】 为了解决负跨导振荡器的共模瞬态抗干扰度(Common-Mode Transient Immunity, CMTI)与功耗之间的矛盾,对负跨导振荡器进行了深入的研究和仿真分析。负跨导振荡器发生快速的负CMT事件时,若流出振荡器的位移电流过大,会使得N对管漏端电压被钳位在一个负的二极管压降,导致振荡器停止工作。为了提升负跨导振荡器的CMTI并降低振荡器功耗,提出了一种尾电流可以动态调节的负跨导振荡器的设计方案。仿真结果表明,采用该方案的负跨导振荡器在快速的共模瞬态噪声的影响下,依旧能够维持振荡,保证信号或能量的有效传输。当CMTI为300 V/ns时,功耗为原来的1/7,大大降低了电路的功耗。更多还原

【Abstract】 In order to solve the contradiction between common-mode transient immunity(CMTI) and power consumption of negative-g_m oscillators, this paper conducts in-depth research and simulation analysis of negative-g_m oscillators. When a rapid negative CMT event occurs to a negative-g_m oscillator, if the displacement current flowing out of the oscillator is too large, the N-pair tube drain voltage will be clamped at a negative diode voltage drop, causing the oscillator to stop working. In order to improve the CMTI of the negative-gm oscillator and reduce the power consumption of the oscillator, a design scheme of the negative-g_m oscillator with dynamic tail current regulation is proposed. The simulation results show that the negative-g_m oscillator using this scheme can maintain oscillation under the influence of fast CMT noise, and ensure the effective transmission of signal or energy. When CMTI is 300 V/ns, the power consumption is 1/7 of the original, which greatly reduces the power consumption of the circuit.更多还原