A software programmable CMOS telephone circuit

Dielacher, Franz; Hauptmann, J.; Reisinger, J.; Steiner, Reto; Zojer, H.

doi:10.1109/4.92022

Cited by 21 publications

(2 citation statements)

References 5 publications

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“…Quasi-floating gate requires a high value resistor, R Large , typically implemented by a single transistor connected to a DC biasing voltage and a capacitor, C i , connected to the AC input voltage in order to work properly. Low voltage analog circuits have been widely improved by using these Bulk Driven [4,5,6,7,8,9,10,11,12,13,14,15,16] and Floating Gate [17,18,19,20,21,22,23,24,25,26,27,28,29,30] techniques, and from them we derive the new technique presented in following section.…”

Section: Introductionmentioning

confidence: 99%

Floating-bulk transistors: An alternative design technique for CMOS low-voltage analog circuits

Molina-R

Gurrola

Padilla

et al. 2020

IEICE Electron. Express

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This letter details a novel floating-bulk transistor technique for low-voltage design. The approach is derived from two previous wellknown techniques: bulk-driven and quasi floating-gate. The floating-bulk technique uses an input capacitive coupling through a floating bulk of a PMOS allowing modulation of the drain current. A fabricated commonsource amplifier was tested on CMOS 0.5 µm technology and the feasibility of the proposal was demonstrated.

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Section: Introductionmentioning

confidence: 99%

Floating-bulk transistors: An alternative design technique for CMOS low-voltage analog circuits

Molina-R

Gurrola

Padilla

et al. 2020

IEICE Electron. Express

View full text Add to dashboard Cite

show abstract

“…Later, in 1991, the concept was used in the practical realization of a software-programmable CMOS telephone circuit [2]. However, not until 1998 [3] did the method draw significant attention as a viable low-voltage analog design technique.…”

Section: Introductionmentioning

confidence: 99%

A bulk-driven CMOS OTA with 68 dB DC gain

Rosenfeld

Kozak

Friedman

Proceedings of the 2004 11th IEEE International Conference on Electronics, Circuits and Systems, 2004. ICECS 2004.

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An ultra-low voltage rail-to-rail operational transconductance amplifier (OTA) based on a standard digital 0.18 mm CMOS process is described in this paper. Techniques for designing a 0.8 volt fully differential OTA are discussed including bias and reference current generator circuits. To achieve rail-to-rail operation, complementary input differential pairs are used, where the bulk-driven technique is applied to reduce the threshold limitation of the MOSFET transistors. The OTA gain is increased by using auxiliary gain boosting amplifiers. This additional circuitry enables the OTA to operate at 0.8 volts, achieving an open loop gain of 68 dB while consuming 94 mW. The DC gain of the amplifier is the highest gain achieved to date in bulk-driven amplifiers. *

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Models for transmission lines with connecting transistors based on wave digital filters

Erbar

Horneber

1995

Circuit Theory & Apps

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SUMMARYBased on the theory of wave digital filters (WDFs), models are derived to simulate interconnection circuits. They contain lumped transmission line models and transmission line models derived from their partial differential equations (distributed models). Both kinds of models are implemented in the transmission line simulator ALWX in order to calculate the signal wave-forms on transmission lines and the cross-talk behaviour between them. Additional MOS transistor models extend the possible applications. Compared with other simulators, ALWX shows significant advantages in CPU time while producing results with high accuracy.

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A software programmable CMOS telephone circuit

Cited by 21 publications

References 5 publications

Floating-bulk transistors: An alternative design technique for CMOS low-voltage analog circuits

Floating-bulk transistors: An alternative design technique for CMOS low-voltage analog circuits

A bulk-driven CMOS OTA with 68 dB DC gain

Models for transmission lines with connecting transistors based on wave digital filters

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