A digitally programmable active resistor in CMOS technology

Lopez-Delgadillo, E.; Diaz-Mendez, Jose Alejandro; Gurrola-Navarro, Marco A.; Garcia-Andrade, M.A.; Vázquez-Medina, Rubén

doi:10.1587/elex.12.20150247

Cited by 4 publications

(2 citation statements)

References 15 publications

(14 reference statements)

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“…Many configurations have been proposed to implement programmable resistors using different techniques. Several resistors have been realized [3][4][5][6][7][8][9][10][11][12] using complementary metal oxide semiconductor (CMOS) technology and can be programmed externally. Few resistors are implemented using current conveyors, operational transconductance amplifier (OTA) arrays and the floating-gate metal oxide semiconductor transistor (FGMOS) technique.…”

Section: Introductionmentioning

confidence: 99%

High-performance programmable grounded resistor and its applications

2018

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Programmable resistor and analog computational circuits are essential for many applications such as analog signal processing units, automatic gain control, neural, fuzzy and instrumentation systems. A high-performance programmable grounded resistor (PGR) using complementary metal oxide semiconductor (CMOS) technology is proposed in this paper. A highly linear CMOS resistor with equivalent resistance ranging from 9.4 to 1.5 k is obtained by cancelling the nonlinear term present in the current equation of an MOSFET working in the linear region. The proposed resistor operates on both positive as well as negative input voltage. The inherited features of PGR are simplicity, extensive control voltage range, wider bandwidth and low-power dissipation. Additionally, analog computational units such as multiplier, squarer and divider are also discussed as applications of the PGR. All circuits are implemented and simulated using TSMC 0.13 µm CMOS technology in SPICE. ARTICLE HISTORY

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Section: Introductionmentioning

confidence: 99%

High-performance programmable grounded resistor and its applications

2018

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“…In general, little work has been done on the low complexity, highly integrated and variation insensitive solution for spectrum shaping. Floating current is a versatile circuit technique which can realize floating resistors and control resistance for further analog signal processing [5,6]. Floating current in this work is used to help spectrum shaping.…”

Section: Introductionmentioning

confidence: 99%

An IM2-free floating current buffer using average power based automatic calibration for IEEE 802.15.6 transmitter

Liu

Yang

et al. 2016

IEICE Electron. Express

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To meet the stringent spectral mask requirement of IEEE 802.15.6, a novel spectral shaping buffer and a new automatic calibration are proposed in this paper. By introducing a floating current into buffer, second order intermodulation product (IM2) is cancelled at output. To calibrate buffer, analog signal processing methods for average power extraction of residual IM2 and accurate quantization are presented, along with error-tolerant decision making logic. A sample human body communication (HBC) transmitter is designed in 0.13 µm CMOS process. Simulation results show spectral mask is suppressed below −120 dBr, satisfying the IEEE 802.15.6 standard specification.

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