论文信息 - A new BiCMOS low-voltage and low-distortion OTA for continuous-time filters

A new BiCMOS low-voltage and low-distortion OTA for continuous-time filters

This paper presents a new BiCMOS OTA based on MOS transistors operating in the triode-region. The THD of the proposed OTA is smaller than -63 dB for an input voltage up to 2 Vp-p at 3 V supply voltage. The Common-Mode (CM) stabilization systems, combining both CM Feed Forward and CM Feed Back circuits are also presented. Simulated results of a second-order filter designed using the proposed OTA are given.

Christian C. Enz | D. Python | F. Yang

[1] Francois Krummenacher,et al. A 4-MHz CMOS Continuous-Time Filter with On-Chip Automatic Tuning , 1987, ESSCIRC '87: 13th European Solid-State Circuits Conference.

[2] E. Vittoz,et al. An analytical MOS transistor model valid in all regions of operation and dedicated to low-voltage and low-current applications , 1995 .

[3] Z. Czarnul,et al. MOS transconductors and integrators with high linearity , 1986 .

[4] Andrea Baschirotto,et al. Tunable BiCMOS continuous-time filter for high-frequency applications , 1992 .

[5] A. Wyszynski,et al. Low-voltage CMOS and BiCMOS triode transconductors and integrators with gain-enhanced linearity and output impedance , 1994 .

[6] E. Seevinck. Analysis and synthesis of translinear integrated circuits , 1988 .

[7] J. Hanson,et al. CMOS voltage to current transducers , 1985 .

[8] P. R. Gray,et al. A 20-MHz sixth-order BiCMOS parasitic-insensitive continuous-time filter and second-order equalizer optimized for disk-drive read channels , 1993 .