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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한전자공학회 JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE Journal of Semiconductor Technology and Science Vol.14 No.5
- 발행연도
- 2014.10
- 수록면
- 579 - 587 (9page)
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초록· 키워드
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This paper presents a variable gain amplifier (VGA) for an analog front-end (AFE) of ultrasound medical imaging. This VGA has a closedloop topology and shows a 37-dB-linear characteristic with a single-stage amplifier. It consists of an op-amp, a non-binary-weighted capacitor array, and a gaincontrol block. This non-binary-weighted capacitor array reduces the required number of capacitors and the complexity of the gain-control block. The VGA has been fabricated in a 0.35-mm CMOS process. This work gives the largest gain range of 37 dB per stage, the largest P1 dB of 9.5 dBm at the 3.3-V among the recent VGA circuits available in the literature. The voltage gain is controlled in the range of [-10, 27] dB in a linear-in-dB scale with 16 steps by a 4-bit digital code. The VGA has a bandpass characteristic with a passband of [20 kHz, 8 MHz].
목차
Abstract
I. INTRODUCTION
II. CLOSED-LOOP VGA WITH NON-BINARYWEIGHTED CAPACITORS
III. CIRCUIT IMPLEMENTATION
IV. MEASUREMENT RESULTS
V. CONCLUSIONS
REFERENCES
참고문헌 (6)
참고문헌 신청
1. [학술지(정기간행물)] - Yikai Wang / 2011 / Low-Noise CMOS TGC Amplifier With Adaptive Gain Control for Ultrasound Imaging Receivers / Circuits and Systems II: Express Briefs, IEEE Transactions on 58 (1) : 26 ~ 30
2. [학술대회논문] - H. H. Nguyen / 2010 / A High-Linearity Low-Noise Reconfiguration Based Programmable Gain Amplifier / European Solid State Circuits Conference : 166 ~ 169
3. [학술지(정기간행물)] - H. H. Nguyen / 2008 / 84 dB 5.2mA digitally-controlled variable gain amplifier / Electron. Lett. 44 (5) : 344 ~ 345
4. [학술지(정기간행물)] - Zhiming Chen / 2012 / A Low-Power Variable-Gain Amplifier With Improved Linearity: Analysis and Design / Circuits and Systems I: Regular Papers, IEEE Transactions on 59 (10) : 2176 ~ 2185
5. [학술지(정기간행물)] - Hassan Elwan / 2009 / A Differential-Ramp Based 65 dB-Linear VGA Technique in 65 nm CMOS / IEEE J. Solid-State Circuits. 44 (9) : 2503 ~ 2514
2. [학술대회논문] - H. H. Nguyen / 2010 / A High-Linearity Low-Noise Reconfiguration Based Programmable Gain Amplifier / European Solid State Circuits Conference : 166 ~ 169
3. [학술지(정기간행물)] - H. H. Nguyen / 2008 / 84 dB 5.2mA digitally-controlled variable gain amplifier / Electron. Lett. 44 (5) : 344 ~ 345
4. [학술지(정기간행물)] - Zhiming Chen / 2012 / A Low-Power Variable-Gain Amplifier With Improved Linearity: Analysis and Design / Circuits and Systems I: Regular Papers, IEEE Transactions on 59 (10) : 2176 ~ 2185
5. [학술지(정기간행물)] - Hassan Elwan / 2009 / A Differential-Ramp Based 65 dB-Linear VGA Technique in 65 nm CMOS / IEEE J. Solid-State Circuits. 44 (9) : 2503 ~ 2514
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