A 0.052 mm2, <0.4% THD, Sinusoidal Current Generator for Bio-Impedance Measurement Using a Recursive Digital Oscillator and Current-Domain FIR Filter
A 0.052 mm2, <0.4% THD, Sinusoidal Current Generator for Bio-Impedance Measurement Using a Recursive Digital Oscillator and Current-Domain FIR Filter
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A%200.052%20mm2,%20<0.4%%20THD,%20正弦%20电流%20发生器%20for%20生物阻抗%20测量%20使用%20a%20递归%20数字%20振荡器%20和%20电流域%20FIR%20滤波器
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
Dong
中科院分区：
文献类型：
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作者：
Seokki Hong;Dong
This brief presents a low-power, low-area and low total harmonic distortion (THD) sinusoidal current stimulator circuit for bio-impedance measurement. Proposed current generator includes recursive digital oscillator for sine wave generation and delta-sigma modulated 1 bit current source with embedded finite impulse response filter for high resolution digital-to-current conversion. The proposed circuit implemented in 0.18-<inline-formula> <tex-math notation="LaTeX">$ {mu } ext{m}$ </tex-math></inline-formula> CMOS process occupies 0.052 mm<sup>2</sup>, and consumes 55.6 <inline-formula> <tex-math notation="LaTeX">$ {mu } ext{W}$ </tex-math></inline-formula> for 20 kHz, 40 <inline-formula> <tex-math notation="LaTeX">$ {mu } ext{A}_{{{ ext{p}- ext{p}}}}$ </tex-math></inline-formula>, 0.17% THD sine current generation.
This brief presents a low-power, low-area and low total harmonic distortion (THD) sinusoidal current stimulator circuit for bio-impedance measurement. Proposed current generator includes recursive digital oscillator for sine wave generation and delta-sigma modulated 1 bit current source with embedded finite impulse response filter for high resolution digital-to-current conversion. The proposed circuit implemented in 0.18-<inline-formula> <tex-math notation="LaTeX">$ {mu } ext{m}$ </tex-math></inline-formula> CMOS process occupies 0.052 mm<sup>2</sup>, and consumes 55.6 <inline-formula> <tex-math notation="LaTeX">$ {mu } ext{W}$ </tex-math></inline-formula> for 20 kHz, 40 <inline-formula> <tex-math notation="LaTeX">$ {mu } ext{A}_{{{ ext{p}- ext{p}}}}$ </tex-math></inline-formula>, 0.17% THD sine current generation.