Details

Autor(en) / Beteiligte

• Vieru, R. G.
• Ghinea, R.

Titel

An ultra low voltage Sigma Delta modulator with inverter based scalable amplifier

Ist Teil von

• 2012 10th International Symposium on Electronics and Telecommunications, 2012, p.3-6

Ort / Verlag

IEEE

Erscheinungsjahr

2012

Quelle

IEEE Electronic Library Online

Beschreibungen/Notizen

• In this paper, a low voltage, second order, switched capacitor Sigma Delta modulator with a novel fully differential amplifier is presented. The immunity to variations with process corners and temperature can easily be achieved, thus maintaining the effective number of bits throughout the entire input signal band. In order to validate the principle, in the ultra low voltage environment, the modulator was designed and tested for the voice band input signals. The circuit was designed using a triple well standard CMOS process, with typical threshold values, without any internal voltage boosting circuits and it is intended for speech applications.