Wideband mirrored current source design based on differential difference amplifier for electrical bioimpedance spectroscopy
Wideband mirrored current source design based on differential difference amplifier for electrical bioimpedance spectroscopy
复制标题
基于差分放大器的宽带镜像电流源生物阻抗谱设计
DOI:
10.1088/2057-1976/aaa9cd
复制
发表时间:
2018-02
影响因子:
1.4
通讯作者:
Jiangyan Sang
中科院分区:
文献类型:
--
作者:
Fu Zhang;Zhaosheng Teng;Haowen Zhong;Yuxiang Yang;Jianmin Li;Jiangyan Sang
Wideband current sources that can work stable over a wide frequency range with large load variations are critical for the performance of electrical impedance spectrum (EIS) measurements. In this paper, we design a wideband mirrored current source (MCS) using two simple differential difference amplifiers (DDA) AD830. PSpice simulation and measurement were performed on load resistances from 100 Ω to 1500 Ω over the frequencies up to 1 MHz. The maximum variation of the output current is less than 0.5% over the whole bandwidth and the output impedance is 4.2 MΩ at 100 Hz and greater than 185 kΩ at 1 MHz. Moreover, less than 1% linearity error (the VIN versus the IOUT) of the output current IOUT from 1 mA to 20 mA was achieved by sweeping the input voltage signal VIN from 0.1 V to 2 V at 100 Hz, 1 kHz and 10 kHz respectively. The DDA-based wideband MCS has high accuracy, linearity and simple structure, which may improve the performance of EIS measurements and other relevant applications.
登录
查看更多内容
影响因子:
2.9
作者:
Kusche, Roman;Malhotra, Ankit;Kaufmann, Steffen
通讯作者:
Kaufmann, Steffen
影响因子:
5.6
作者:
A. Mahnam;Hassan Yazdanian;M. M. Samani-M.
通讯作者:
A. Mahnam;Hassan Yazdanian;M. M. Samani-M.
影响因子:
--
作者:
P. Bertemes-Filho;Volney C. Vincence;Marcio M. Santos;Ilson X. Zanatta
通讯作者:
P. Bertemes-Filho;Volney C. Vincence;Marcio M. Santos;Ilson X. Zanatta
DOI:
10.1016/b978-0-12-411470-8.00008-8
发表时间:
2015
期刊:
--
影响因子:
--
作者:
S. Grimnes;Ø. Martinsen
通讯作者:
S. Grimnes;Ø. Martinsen
影响因子:
3.2
作者:
S. Armstrong;D. Jennings
通讯作者:
S. Armstrong;D. Jennings