A High-Transconductance Voltage-to-Current Converter Design

被引：0
作者：
M. Mathew
K. Hayatleh
B. L. Hart
机构：
[1] Oxford Brookes University,School of Technology
来源：
Circuits, Systems and Signal Processing | 2010年 / 29卷
关键词：
Transconductance; Voltage-to-current converter; Total harmonic distortion; Global feedback; Emitter degeneration;
D O I：
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中图分类号：
学科分类号：
摘要：
This paper describes the design of a high-transconductance, wide-band, temperature-insensitive bipolar differential voltage-to-current converter, the transconductance of which is determined by a chosen degeneration resistor. Detailed illustrations of current and voltage traces are included to clarify circuit operation. Comparison with previously published designs shows that this converter provides better linearity, with very low temperature sensitivity and excellent transconductance predictability. Simulation results show that the proposed circuit, with a nominal transconductance of 5 mS, has a Total Harmonic Distortion (THD) better than −70 dB at 10 MHz, with a degeneration resistor of 400 Ω over an input voltage range of 350 mV for supply voltages of ±2.5 V. The analysis and simulation comparisons are in good agreement.
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页码：1123 / 1140
页数：17
相关论文
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