A fully balanced pseudo-differential OTA with common-mode feedforward and inherent common-mode feedback detector Academic Article

abstract

• A pseudo-differential fully balanced fully symmetric CMOS operational transconductance amplifier (OTA) architecture with inherent common-mode detection is proposed. Through judicious arrangement, the common-mode feedback circuit can be economically implemented. The OTA achieves a third harmonic distortion of -43 dB for 900 mVppat 30 MHz. The OTA, fabricated in 0.5-m CMOS process, is used to design a 100-MHz fourth-order linear phase filter. The measured filter's group delay ripple is 3% for frequencies up to 100 MHz, and the measured dynamic range is 45 dB for a total harmonic distortion of -46 dB. The filter consumes 42.9 mW per complex pole pair while operating from a 1.65-V power supply.

authors

• Silva-Martinez, Jose

published proceedings

• IEEE JOURNAL OF SOLID-STATE CIRCUITS

altmetric score

• 3

author list (cited authors)

• Mohieldin, A. N., Sanchez-Sinencio, E., & Silva-Martinez, J.

citation count

• 105

complete list of authors

• Mohieldin, AN||Sanchez-Sinencio, E||Silva-Martinez, J

publication date

• April 2003

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

keywords

• Common-mode Feedback (cmfb)
• Common-mode Feedforward (cmff)
• Fully Balanced High Frequency
• Operational Transconductance Amplifier (ota)
• Ota-c Filters
• Pseudo-differential

Digital Object Identifier (DOI)

• 10.1109/JSSC.2003.809520

start page

• 663

end page

• 668

volume

• 38

issue

• 4

URL

• http%3A%2F%2Fdx.doi.org%2F10.1109%2Fjssc.2003.809520