title: Voltage controlled oscillator for neural stimulator receiver front-end
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: ÐÐµÐ½ÐµÑÐ°ÑÐ¾Ñ, ÑÐ¿ÑÐ°Ð²Ð»ÑÐµÐ¼ÑÐ¹ Ð½Ð°Ð¿ÑÑÐ¶ÐµÐ½Ð¸ÐµÐ¼, Ð´Ð»Ñ Ð¿ÑÐ¸ÑÐ¼Ð½Ð¸ÐºÐ° Ð½ÐµÐ¹ÑÐ¾ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð²
Creators: name: ÐÐ¾ÑÐ°Ð¼Ð¼Ð°Ð´Ð¸, ÐÐ±Ð´ÑÐ»ÑÐ°Ð¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2024
Subjects: ÐÐµÐ½ÐµÑÐ°ÑÐ¾ÑÑ
neural frontend
time encoding
ring oscillator
stimulation artifacts
deep brain stimulation
Ð½ÐµÐ¹ÑÐ¾Ð½Ð½ÑÐ¹ ÑÑÐ¾Ð½ÑÐµÐ½Ð´
ÐºÐ¾Ð´Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð²ÑÐµÐ¼ÐµÐ½Ð¸
ÐºÐ¾Ð»ÑÑÐµÐ²Ð¾Ð¹ Ð¾ÑÑÐ¸Ð»Ð»ÑÑÐ¾Ñ
Ð°ÑÑÐµÑÐ°ÐºÑÑ ÑÑÐ¸Ð¼ÑÐ»ÑÑÐ¸Ð¸
Ð³Ð»ÑÐ±Ð¾ÐºÐ°Ñ ÑÑÐ¸Ð¼ÑÐ»ÑÑÐ¸Ñ Ð¼Ð¾Ð·Ð³Ð°

description: ÐÐ±ÑÐµÐºÑÐ¾Ð¼ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐ²Ð»ÑÐµÑÑÑ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ VCO Ð´Ð»Ñ Ð¿ÑÐ¸ÐµÐ¼Ð½Ð¸ÐºÐ° Ð½ÐµÐ¹ÑÐ¾ÑÑÐ¸Ð¼ÑÐ»ÑÑÐ¾ÑÐ°. Ð¦ÐµÐ»Ñ ÑÐ¾ÑÑÐ¾Ð¸Ñ Ð² ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐµ Ð²ÑÑÐ¾ÐºÐ¾Ð´Ð¸Ð½Ð°Ð¼Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð´Ð¸Ð°Ð¿Ð°Ð·Ð¾Ð½Ð° Ð¸ Ð»Ð¸Ð½ÐµÐ¹Ð½Ð¾Ð³Ð¾ VCO Ð´Ð»Ñ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ Ð² Ð½ÐµÐ¹ÑÐ¾Ð¿ÑÐ¸ÐµÐ¼Ð½Ð¸ÐºÐ°Ñ. VCO Ð´Ð¾Ð»Ð¶ÐµÐ½ Ð±ÑÑÑ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½ Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ Ð² Ð¾ÑÐ½Ð¾Ð²Ð½Ð¾Ð¼ ÑÐ¸ÑÑÐ¾Ð²ÑÑ ÑÑÐµÐ¼ Ð´Ð»Ñ Ð¾Ð±Ð»ÐµÐ³ÑÐµÐ½Ð¸Ñ Ð¸Ð½ÑÐµÐ³ÑÐ°ÑÐ¸Ð¸ Ð°Ð½Ð°Ð»Ð¾Ð³Ð¾Ð²ÑÑ Ð¸ ÑÐ¸ÑÑÐ¾Ð²ÑÑ ÑÑÐµÐ¼ Ð² Ð·Ð°Ð¼ÐºÐ½ÑÑÐ¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ðµ DBS. ÐÐµÐ¹ÑÐ¾Ð½Ð½ÑÐµ Ð¸Ð½ÑÐµÑÑÐµÐ¹ÑÑ ÑÑÐµÐ±ÑÑÑ Ð²ÑÑÐ¾ÐºÐ¾ÑÐ¾ÑÐ½Ð¾Ð¹ Ð°Ð½Ð°Ð»Ð¾Ð³Ð¾Ð²Ð¾Ð¹ ÑÑÐµÐ¼Ñ Ð´Ð»Ñ ÑÐ¾Ð¿ÑÑÐ¶ÐµÐ½Ð¸Ñ Ð¼Ð¸ÐºÑÐ¾ÑÐ»ÐµÐºÑÑÐ¾Ð´Ð¾Ð² Ð¸ ÑÐ»Ð¾Ð¶Ð½ÑÑ ÑÐ¸ÑÑÐ¾Ð²ÑÑ ÑÑÐµÐ¼, Ð¸ÑÐ¿Ð¾Ð»ÑÐ·ÑÐµÐ¼ÑÑ Ð´Ð»Ñ Ð¿Ð°ÑÐ°Ð»Ð»ÐµÐ»ÑÐ½Ð¾Ð¹ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ¸ Ð´Ð°Ð½Ð½ÑÑ. ÐÐ½ÑÐµÐ³ÑÐ°ÑÐ¸Ñ Ð²ÑÑÐ¾ÐºÐ¾Ð¿Ð»Ð¾ÑÐ½ÑÑ ÑÐ¸ÑÑÐ¾Ð²ÑÑ ÑÑÐµÐ¼ Ð¸ Ð°Ð½Ð°Ð»Ð¾Ð³Ð¾Ð²ÑÑ ÑÑÐµÐ¼ ÑÑÐµÐ±ÑÐµÑ ÑÐ½Ð¸Ð¶ÐµÐ½Ð¸Ñ Ð½Ð°Ð¿ÑÑÐ¶ÐµÐ½Ð¸Ñ Ð¿Ð¸ÑÐ°Ð½Ð¸Ñ, ÑÐµÐ¼ ÑÐ°Ð¼ÑÐ¼ Ð¾Ð³ÑÐ°Ð½Ð¸ÑÐ¸Ð²Ð°Ñ Ð´Ð¸Ð½Ð°Ð¼Ð¸ÑÐµÑÐºÐ¸Ð¹ Ð´Ð¸Ð°Ð¿Ð°Ð·Ð¾Ð½ Ð¸ Ð¿ÑÐ¸Ð²Ð¾Ð´Ñ Ðº Ð½ÐµÐ»Ð¸Ð½ÐµÐ¹Ð½Ð¾ÑÑÐ¸ Ð² Ð°Ð½Ð°Ð»Ð¾Ð³Ð¾Ð²ÑÑ ÑÑÐµÐ¼Ð°Ñ Ð¿ÑÐ¸ Ð½Ð°Ð»Ð¸ÑÐ¸Ð¸ Ð°ÑÑÐµÑÐ°ÐºÑÐ¾Ð² ÑÑÐ¸Ð¼ÑÐ»ÑÑÐ¸Ð¸ Ð²ÑÑÐ¾ÐºÐ¾Ð¹ Ð°Ð¼Ð¿Ð»Ð¸ÑÑÐ´Ñ. Ð ÑÑÐ¾Ð¹ Ð´Ð¸ÑÑÐµÑÑÐ°ÑÐ¸Ð¸ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ñ ÑÐµÐ¾ÑÐ¸Ñ Ð¸ ÑÐµÐ°Ð»Ð¸Ð·Ð°ÑÐ¸Ñ Ð³ÑÑÐ¿Ð¿Ñ Ð²ÑÑÐ¾ÐºÐ¾Ð´Ð¸Ð½Ð°Ð¼Ð¸ÑÐµÑÐºÐ¸Ñ Ð»Ð¸Ð½ÐµÐ¹Ð½ÑÑ Ð³ÐµÐ½ÐµÑÐ°ÑÐ¾ÑÐ¾Ð², ÑÐ¿ÑÐ°Ð²Ð»ÑÐµÐ¼ÑÑ Ð½Ð°Ð¿ÑÑÐ¶ÐµÐ½Ð¸ÐµÐ¼ (VCO), Ñ ÑÐµÐ»ÑÑ ÑÐ¼ÑÐ³ÑÐµÐ½Ð¸Ñ ÑÐ°ÐºÐ¸Ñ Ð½ÐµÐ´Ð¾ÑÑÐ°ÑÐºÐ¾Ð². ÐÑÐµÐ½Ð¸Ð²Ð°ÑÑÑÑ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÑ VCO Ð¸ Ð¾Ð¿ÑÐ¸Ð¼Ð¸Ð·Ð¸ÑÑÑÑÑÑ ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÐµ Ð¾Ð¿ÑÐ¸Ð¼Ð°Ð»ÑÐ½ÑÐµ ÑÑÐµÐ¼Ñ VCO Ð´Ð»Ñ Ð´Ð¾ÑÑÐ¸Ð¶ÐµÐ½Ð¸Ñ ÑÐµÐ»ÐµÐ²ÑÑ Ð¿Ð¾ÐºÐ°Ð·Ð°ÑÐµÐ»ÐµÐ¹, ÑÐ¾ÐºÑÑÐ¸ÑÑÑÑÑ Ð½Ð° ÑÐ°ÐºÐ¸Ñ Ð°ÑÐ¿ÐµÐºÑÐ°Ñ, ÐºÐ°Ðº Ð»Ð¸Ð½ÐµÐ¹Ð½Ð¾ÑÑÑ, ÑÐ°Ð·Ð¾Ð²ÑÐ¹ ÑÑÐ¼, ÑÐ½ÐµÑÐ³Ð¾Ð¿Ð¾ÑÑÐµÐ±Ð»ÐµÐ½Ð¸Ðµ Ð¸ Ð¾ÑÐ½Ð¾ÑÐµÐ½Ð¸Ðµ ÑÐ¸Ð³Ð½Ð°Ð»/ÑÑÐ¼. ÐÑÐ½Ð¾Ð²Ð½Ð¾Ðµ Ð²Ð½Ð¸Ð¼Ð°Ð½Ð¸Ðµ Ð² ÑÑÐ¾Ð¼ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ð¸ ÑÐ´ÐµÐ»ÑÐµÑÑÑ ÑÐµÑÐµÐ½Ð¸Ñ Ð¿ÑÐ¾Ð±Ð»ÐµÐ¼Ñ Ð½ÐµÐ»Ð¸Ð½ÐµÐ¹Ð½Ð¾ÑÑÐ¸ VCO Ð¿ÑÐ¸ Ð½Ð°Ð»Ð¸ÑÐ¸Ð¸ Ð°ÑÑÐµÑÐ°ÐºÑÐ¾Ð² Ð²ÑÑÐ¾ÐºÐ¾Ð¹ Ð°Ð¼Ð¿Ð»Ð¸ÑÑÐ´Ñ. VCO ÑÐ¾ ÑÐ¼ÐµÑÐ°Ð½Ð½Ð¾Ð¹ ÑÑÐµÐ¹ÐºÐ¾Ð¹ Ð·Ð°Ð´ÐµÑÐ¶ÐºÐ¸ Ð¸ ÑÐµÐ·Ð¸ÑÑÐ¸Ð²Ð½ÑÐ¼ Ð¿ÑÐµÐ¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°ÑÐµÐ»ÐµÐ¼ V/I ÑÐ´Ð¾Ð²Ð»ÐµÑÐ²Ð¾ÑÑÐµÑ Ð¿Ð¾ÑÑÐ¸ Ð²ÑÐµÐ¼ Ð½ÐµÐ¾Ð±ÑÐ¾Ð´Ð¸Ð¼ÑÐ¼ ÑÑÐµÐ±Ð¾Ð²Ð°Ð½Ð¸ÑÐ¼, Ð²ÐºÐ»ÑÑÐ°Ñ Ð½ÐµÐ±Ð¾Ð»ÑÑÑÑ Ð¿Ð¾Ð³ÑÐµÑÐ½Ð¾ÑÑÑ Ð»Ð¸Ð½ÐµÐ¹Ð½Ð¾ÑÑÐ¸ 0,1%, Ð½Ð¸Ð·ÐºÐ¸Ð¹ ÑÐ°Ð·Ð¾Ð²ÑÐ¹ ÑÑÐ¼ -116 Ð´ÐÐ½/ÐÑ Ð¸ ÐºÐ¾Ð¼Ð¿Ð°ÐºÑÐ½ÑÑ Ð¿Ð»Ð¾ÑÐ°Ð´Ñ 890 Ð¼ÐºÐ¼^2.
description: Object of study is VCO design for neural stimulator receiver front-end. The aim is to design a high dynamic range and linear VCO for application in neural receiver front ends. The VCO should be designed using mostly digital circuits to facilitate the integration of analog and digital circuits in a closed loop DBS system. Neural front ends require high-precision analog circuitry to interface microelectrodes and complex digital circuits utilized for concurrent data processing. Integration of high-density digital circuits and analog circuits requires a reduction in supply voltage, thereby constraining the dynamic range and resulting in nonlinearity in analog circuits during the presence of high-amplitude stimulation artifacts. In this thesis, the theory and implementation of a group of high dynamic range, linear voltage-controlled oscillators (VCOs) are presented with the purpose of mitigating such shortcomings. The VCO parameters are estimated and a variety of optimal VCO schematics are optimized to achieve the target objectives, focusing on aspects like linearity, phase noise, power consumption, and signal-to-noise ratio. The principal focus of this study centers on addressing the nonlinearity of VCO in the presence of high-amplitude artifacts. VCO with mixed delay cell and resistive V/I converter fulfils almost all the necessary requirements, including a small linearity error of 0.1%, low phase noise of -116 dBc/Hz, and a compact area of 890 Î¼m^2.