Abstract modelling and estimation of a high performance Tobey´s PGA

Author

Adhikari, Sumit ; Grimm, Christoph ; Haase, Jan

Author_Institution

Inst. of Comput. Technol., Vienna Univ. of Technol., Vienna, Austria

fYear

2011

fDate

13-15 Sept. 2011

Firstpage

1

Lastpage

6

Abstract

Programmable Gain Amplifiers (PGA) are the most important component in a signal chain as it poses a Signal-to-Noise performance and Total Harmonic Distortion (THD) bottleneck for any signal path. Due to it´s massive size in silicon and respective performance, parametric optimization of a PGA is of utmost importance beforehand. In this article we design a high gain (80 dB), high bandwidth (32 kHz) and a high worst case SFDR (70 dB) PGA using SystemC-AMS with all it´s real life non-idealities involved. We optimize the PGA and extract the specification for circuit level implementation. The novelty brought is manifestation of possibility of analog design optimization at highest level of abstraction.

Keywords

amplifiers; analogue circuits; SFDR; Tobey PGA; abstract modelling; analog design optimization; bandwidth 32 kHz; gain 80 dB; parametric optimization; programmable gain amplifiers; signal-to-noise performance; total harmonic distortion; Bandwidth; Electronics packaging; Equations; Gain; Mathematical model; Noise; Resistance; Abstract Modelling; Accurate and Sufficient Designing; Analog Modelling; Design Optimization; Multi-stage PGA; Non-ideal Modelling; Programmable Gain Amplifier; Selective Estimation; Specification Extraction; SystemC; SystemC AMS;

fLanguage

English

Publisher

ieee

Conference_Titel

Specification and Design Languages (FDL), 2011 Forum on

Conference_Location

Oldenburg

ISSN

1636-9874

Print_ISBN

978-1-4577-0763-6

Electronic_ISBN

1636-9874

Type

conf

Filename

6069467