Design of Wideband Linear Voltage-to-Current Converters

Retdian NICODIMUS  Shigetaka TAKAGI  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E93-A   No.2   pp.382-389
Publication Date: 2010/02/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E93.A.382
Print ISSN: 0916-8508
Type of Manuscript: Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
current-mode,  voltage-to-current converter,  

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This paper proposes a voltage-to-current converter with nested feedback loop configuration to achieve high loop gain without reducing the bandwidth. Simulation results using 0.18-µm CMOS process parameters show that the proposed circuit has a good linearity performance. The simulated bandwidth is 350 MHz. The THD improvement of the proposed circuit is more than 60 dB compared to the one of a common gate circuit under a same total current consumption of 10.4 mA.