A high linearity, 8-GSa/s track-and-hold amplifier in GaAs HBT technology

被引：2

作者：

Li, Shaojun ^{[1
]}

Lv, Hongliang ^{[1
]}

Zhang, Yimen ^{[1
]}

Zhang, Yuming ^{[1
]}

Wu, Yue ^{[1
]}

Asif, Muhammad ^{[2
]}

机构：

[1] Xidian Univ, Sch Microelect, 2 Taibai Rd, Xian 710071, Shaanxi, Peoples R China

[2] Qurtuba Univ Sci & IT, D I Kpk 29050, Pakistan

来源：

IEICE ELECTRONICS EXPRESS | 2018年 / 15卷 / 23期

关键词：

gallium arsenide; high-speed sampling; track-and-hold; non-linear distortion; Schottky diodes; MMICs;

D O I：

10.1587/eIex.15.20180946

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A high linearity full differential 8 GSa/s track-and-hold amplifier (THA) is presented in this paper. The proposed THA is designed and implemented using 2-mu m GaAs HBT technology to be targeted for faster operation in sampling systems at a clock frequency of GHz. In this THA, an alternative switch emitter follower (SEF) is used as a switching stage with a Schottky diode for hold-mode isolation enhancement and high-speed operation. In conjunction with well-designed input buffer allows us to achieve high linearity and comparable dynamic performance. Measured small signal -3 dB bandwidth, and hold-mode isolation are better than 3.6 GHz and 40 dB, respectively. The prototype achieves a spurious-free dynamic range (SFDR) of 43.9 dB at 0.5 GHz and an average total harmonic distortion (THD) below -40 dBc up to a first Nyquist frequency of 4 GHz. This work has the potential for wideband, high speed and low distortion analog to digital converter (ADC) used in the future direct sampling systems.

引用

页数：10

共 14 条

[1] [Anonymous], DESIGN ANALOG CMOS I
[2] [Anonymous], IEEE MTT S INT MICR
[3] Bishop W. L., 1987, 1987 IEEE MTT-S International Microwave Symposium Digest (Cat. No.87CH2395-2), P607, DOI 10.1109/MWSYM.1987.1132483
[4] A 1-GSample/s, 15-GHz Input Bandwidth Master-Slave Track-and-Hold Amplifier in InP DHBT Technology
Bouvier, Yves
Ouslimani, Achour
Konczykowska, Agnieszka
Godin, Jean
[J]. IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2009, 57 (12) : 3181 - 3187
[5] Perturbation analysis of nonlinear distortion in analog integrated circuits
Buonomo, A
Lo Schiavo, A
[J]. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, 2005, 52 (08) : 1620 - 1631
[6] Hsin-Liang Chen, 2012, 2012 International Symposium on Intelligent Signal Processing and Communications Systems (ISPACS 2012), P636, DOI 10.1109/ISPACS.2012.6473567
[7] A broadband 10-GHz track-and-hold in Si/SiGe HBT technology
Jensen, JC
Larson, LE
[J]. IEEE JOURNAL OF SOLID-STATE CIRCUITS, 2001, 36 (03) : 325 - 330
[8] Lin YA, 2017, IEEE MTT S INT MICR, P137, DOI 10.1109/MWSYM.2017.8058869
[9] A 1-GS/s 11-Bit SAR-Assisted Pipeline ADC With 59-dB SNDR in 65-nm CMOS
Liu, Qing
Shu, Wei
Chang, Joseph S.
[J]. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 2018, 65 (09) : 1164 - 1168
[10] Liu Y, 2014, 2014 IEEE SYMPOSIUM ON ADAPTIVE DYNAMIC PROGRAMMING AND REINFORCEMENT LEARNING (ADPRL), P212

← 1 2 →