Wideband Variable-Gain Amplifiers Based on a Pseudo-Current-Steering Gain-Tuning Technique

Kong, Lingshan1; Chen, Yong2; Yu, Haohong1; Pan, Quan3; Boon, Chirn Chye1; Mak, Pui-In2; Martins, Rui P.2,4

10.1109/APCCAS47518.2019.8953084

2019

978-1-7281-2941-9

15th Annual IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2019

153-156

11-14 Nov. 2019

Bangkok, Thailand

345 E 47TH ST, NEW YORK, NY 10017 USA

Institute of Electrical and Electronics Engineers Inc.

This paper reports two variable-gain amplifiers (VGAs) featuring a new pseudo-current-steering gain-tuning technique. In the first VGA (VGA-I), a single-voltage-controlled dual-branch current mirror is exploited as a standalone gain control block. In the second VGA (VGA-II), two NMOS transistors, which are biased by a tunable voltage, are integrated into a conventional common-source amplifier to steer away partial of the total current. Fabricated in 40-nm CMOS technology, the VGA-I (VGA-II) occupies a tiny area of 0.03 mm²(0.024 mm²) and consumes 22 mW (20 mW). Measured over a gain range of > 64 dB, the -3-dB bandwidth of the VGA-I (VGA-II) is 9 GHz (6.6 GHz). For the time-domain tests, VGA-I (VGA-II) exhibits a jitter of 40 ps (30 ps), under a 2⁷-1 PRBS input at 12 Gb/s. Their power efficiencies (1.83 and 1.67 pJ/bit) compare favorably with state-of-the-art wideband VGAs.
© 2019 IEEE.

variable-gain amplifier (VGA) CMOS wide-tuning gain control pseudo-current steering bandwidth (BW) high-speed transceiver negative capacitance peak-to-peak jitter

其他

英语

EI ; CPCI-S

[DELTA-NTU CORP-SLE-RP3]

Engineering

Engineering, Electrical & Electronic

WOS:000530745700039

20200508115154

Bandwidth ; Broadband amplifiers ; Capacitance ; CMOS integrated circuits ; Gain control ; Jitter ; Time domain analysis ; Tuning ; Voltage regulators

Electricity: Basic Concepts and Phenomena:701.1 ; Amplifiers:713.1 ; Semiconductor Devices and Integrated Circuits:714.2 ; Information Theory and Signal Processing:716.1 ; Specific Variables Control:731.3 ; Control Equipment:732.1 ; Mathematics:921

EV Compendex

1.Nanyang Technological University, Singapore, Singapore
2.State Key Laboratory of Analog and Mixed-Signal VLSI and FST-ECE, University of Macau, China
3.School of Microelectronics, Southern University of Science and Technology, Shenzhen, China
4.Instituto Superior Técnico, Universidade de Lisboa, Portugal

Kong, Lingshan,Chen, Yong,Yu, Haohong,et al. Wideband Variable-Gain Amplifiers Based on a Pseudo-Current-Steering Gain-Tuning Technique[C]. 345 E 47TH ST, NEW YORK, NY 10017 USA:Institute of Electrical and Electronics Engineers Inc.,2019:153-156.