A 1.2V 0.2mW 27MHz CMOS limiting amplifier using cross-coupled active load structure. Issue 3 (2nd July 2020)

• Record Type: Journal Article
• Authors: Khan, M. Saddam Hossain; Barman, Surajit Das; Reza, Ahmed Wasif
• Is Part Of: Australian journal of electrical & electronics engineering. Volume 17:Issue 3(2020)
• Page Start: 239
• Page End: 246
• Publication Date: 2020-07-02
• Subjects: Limiting amplifier -- cross-coupled active load structure -- modulation index -- differential gain; Electrical engineering -- Periodicals; Electronics -- Periodicals; Periodicals; 621.305
• DOI: 10.1080/1448837X.2020.1818957
• Languages: English
• ISSNs: 1448-837X

Abstract

ABSTRACT: This paper presents a 1.2 V 0.2 mW CMOS limiting amplifier (LiA) designed in both schematic and layout levels using 130 nm CMOS technology. A cross-coupled active load structure is used to provide high differential gain and low common mode gain for the design. A common mode logic (CML) to CMOS level conversion topology is used to convert the differential input signal into a single-ended output signal for the proposed design. The designed circuit generates clock signal and behaves effectively up to modulation index variation ≤0.3 for input signal variation up to 40mVp-p. A bandwidth of 27 MHz is chosen for the amplifier design and the measurement shows a differential gain of 60 dB with a power consumption of about 0.2 mW excluding power consumption in buffer stage.