摘要:

AbstractA reconfigurable MOS/BiMOS cascode current source/transresistance stage with very high output impedance is presented in this paper. A cascode active feedback circuit has been employed to achieve such a high output impedance, which approaches the leakage resistance of a reverse‐biased junction, assuming that the MOS devices have a large channel length and do not exhibit the short‐channel effect. Through small‐signal analysis and SPICE simulation it is shown that the proposed current source/transresistance stage provides an output open‐circuit Thevinin voltage greater than 108V. This is an increase of about four orders of magnitude as compared with the conventional cascode current source with the same output voltage range. For scaled technologies this current source/transresistance stage is shown to be ideal for practical high‐performance analogue circuit design. We have incorporated the current sources with active feedback in the output stage of a folded cascode op amp and obtained a large DC gain improvement without significantly affecting its high‐frequency/transien

ISSN:0098-9886    

DOI:10.1002/cta.4490200602

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1992

数据来源: WILEY

摘要:

AbstractA dynamic tolerance problem for linear circuits is considered. More specifically, the worst‐case analysis of the scalar step response under interval variations of the circuit parameters is treated. Approximate solutions to the dynamic tolerance analysis problem considered are suggested, two of them having the property of enclosing the exact solution of the problem.A method for determining the approximate solutions introduced is proposed. It is based on the known integral relationship between the time response and the real part of the frequency response for linear circuits on one hand and certain basic ideas and techniques from interval analysis on the other.The method reduces to evaluating some interval extension or the range of certain sums or integrals of the real part of the circuit frequency response with respect to the parameter variation

ISSN:0098-9886    

DOI:10.1002/cta.4490200603

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1992

数据来源: WILEY

摘要:

AbstractIn this paper an efficient technique is developed for the design of two‐dimensional recursive digital filters in the frequency domain. the formulation of the design problem is based upon a rational approximation method in parallel with a suitable interior penalty technique. the structure of the proposed approach permits one to include in the design optimization problem additional constraints related to the stability, linear phase and symmetries properties of the resultant filter. In contrast with previous design methods, the coefficients of the filters are determined directly and it is not required to apply any ‘inverse’ or stabilization technique. Analytical examples illustrate the features and effectiveness of the proposed app

ISSN:0098-9886    

DOI:10.1002/cta.4490200604

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1992

数据来源: WILEY

ISSN:0098-9886    

DOI:10.1002/cta.4490200605

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1992

数据来源: WILEY

ISSN:0098-9886    

DOI:10.1002/cta.4490200606

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1992

数据来源: WILEY

ISSN:0098-9886    

DOI:10.1002/cta.4490200607

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1992

数据来源: WILEY

ISSN:0098-9886    

DOI:10.1002/cta.4490200608

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1992

数据来源: WILEY

ISSN:0098-9886    

DOI:10.1002/cta.4490200601

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1992

数据来源: WILEY