標題: A 40-MHz double differential-pair CMOS OTA with-60-dB IM3
作者: Lo, Tien-Yu
Hung, Chung-Chih
電信工程研究所
Institute of Communications Engineering
關鍵字: operational transconductance amplifier (OTA);pseudodifferential structure;short channel effect;source degeneration
公開日期: 1-Feb-2008
摘要: A configuration of a linearized operational transconductance amplifier (OTA) for low-voltage and high-frequency applications is proposed. By using double pseudodifferential pairs and the source-degeneration structure under nano-scale CMOS technology, the norlinearity caused by short channel effect from a small feature size can be minimized. A robust common-mode control system is designed for input and output common-mode stability and thus reduces distortion caused by common-mode voltage variation. Mining ability can be achieved by using MOS transistors in the linear region. The linearity of the OTA is about -60-dB third-order inter-modulation (IM3) distortion for up to 0.9 V-pp at 40 MHz. This OTA was fabricated by the TSMC 180-nm deep n-well CMOS process. It occupies a small area of 15.1 X 10(-3) mm(2) and the power consumption is 9.5 mW under a 1.5-V supply voltage.
URI: http://dx.doi.org/10.1109/TCSI.2007.910747
http://hdl.handle.net/11536/9693
ISSN: 1549-8328
DOI: 10.1109/TCSI.2007.910747
期刊: IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
Volume: 55
Issue: 1
起始頁: 246
結束頁: 253
Appears in Collections:Articles


Files in This Item:

  1. 000254022300002.pdf