5th-Order Continuous-Time Low-Pass Filter Achieving 56 MHz Bandwidth 30.5 dBm IIP3 With a Novel Low-Distortion Amplifier

被引：5

作者：

Park, Changjoo ^{[1
]}

Tavares, Yang Azevedo ^{[1
]}

Lee, Junyong ^{[1
]}

Wo, Jiwon ^{[1
]}

Lee, Minjae ^{[1
]}

机构：

[1] Gwangju Inst Sci & Technol, Sch Elect Engn & Comp Sci, Gwangju 123, South Korea

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2021年 / 68卷 / 06期

关键词：

Low-pass filters; Active filters; Distortion; Operational amplifiers; Batteries; Bandwidth; Stability criteria; Analog filter; low distortion; low-pass filter; operational amplifier; wide-bandwidth; wide output swing;

D O I：

10.1109/TCSII.2020.3039247

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：

This brief presents a highly linear and high-speed operational amplifier that consists of a double-recycling folded cascode input stage and an adaptive biasing with a flipped voltage follower to boost slew-rate and unity-gain frequency. In addition, frequency compensation is performed by an input cross-coupled phase-lead passive compensation scheme and hybrid Miller-cascode compensation. A 56 MHz -3 dB bandwidth fifth-order programmable gain continuous-time active low pass filter is fabricated in 180 nm CMOS to validate the proposed scheme. The filter achieves 30.5 dBm of third-order interception point at 38 MHz and occupies 0.215 mm(2). The filter consumes 14.7 mW with 1.8 V supply and has 0.2 dB in-band ripple.

引用

页码：1768 / 1772

页数：5

共 18 条

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