Switched-current biquad using differential, double-sampling, forward/backward difference integrators

Markus Helfenstein; Jari Pascal Curty; George S. Moschytz

doi:10.1109/iscas.2000.856411

Switched-current biquad using differential, double-sampling, forward/backward difference integrators

Markus Helfenstein
, Jari Pascal Curty
, George S. Moschytz

Swiss Federal Institute of Technology Zurich

Research output: Contribution to journal › Conference article › peer-review

Abstract

A new switched-current integrator which accomplishes forward and backward difference integration and achieves double-sampling capabilities is described. The signal-flow graphs (SFGs) of several double-sampling integrators are derived and mapped into transistor circuits. Furthermore, as an example, a biquad based on an exact design and operating in differential and double-sampling mode is described and simulated. It is shown that the pole sensitivity of this biquad is reduced by a factor of 2 and the coefficient spread by a factor of 3 when compared with a bilinearly transformed reference filter.

Original language	English
Pages (from-to)	II-645-II-648
Journal	Proceedings - IEEE International Symposium on Circuits and Systems
Volume	2
DOIs	https://doi.org/10.1109/iscas.2000.856411
State	Published - 2000
Externally published	Yes
Event	Proceedings of the IEEE 2000 International Symposium on Circuits and Systems, ISCAS 2000 - Geneva, Switz, Switzerland Duration: 28 May 2000 → 31 May 2000

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10.1109/iscas.2000.856411

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title = "Switched-current biquad using differential, double-sampling, forward/backward difference integrators",

abstract = "A new switched-current integrator which accomplishes forward and backward difference integration and achieves double-sampling capabilities is described. The signal-flow graphs (SFGs) of several double-sampling integrators are derived and mapped into transistor circuits. Furthermore, as an example, a biquad based on an exact design and operating in differential and double-sampling mode is described and simulated. It is shown that the pole sensitivity of this biquad is reduced by a factor of 2 and the coefficient spread by a factor of 3 when compared with a bilinearly transformed reference filter.",

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year = "2000",

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AU - Curty, Jari Pascal

AU - Moschytz, George S.

PY - 2000

Y1 - 2000

N2 - A new switched-current integrator which accomplishes forward and backward difference integration and achieves double-sampling capabilities is described. The signal-flow graphs (SFGs) of several double-sampling integrators are derived and mapped into transistor circuits. Furthermore, as an example, a biquad based on an exact design and operating in differential and double-sampling mode is described and simulated. It is shown that the pole sensitivity of this biquad is reduced by a factor of 2 and the coefficient spread by a factor of 3 when compared with a bilinearly transformed reference filter.

AB - A new switched-current integrator which accomplishes forward and backward difference integration and achieves double-sampling capabilities is described. The signal-flow graphs (SFGs) of several double-sampling integrators are derived and mapped into transistor circuits. Furthermore, as an example, a biquad based on an exact design and operating in differential and double-sampling mode is described and simulated. It is shown that the pole sensitivity of this biquad is reduced by a factor of 2 and the coefficient spread by a factor of 3 when compared with a bilinearly transformed reference filter.

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JO - Proceedings - IEEE International Symposium on Circuits and Systems

JF - Proceedings - IEEE International Symposium on Circuits and Systems

T2 - Proceedings of the IEEE 2000 International Symposium on Circuits and Systems, ISCAS 2000

Y2 - 28 May 2000 through 31 May 2000

ER -

Switched-current biquad using differential, double-sampling, forward/backward difference integrators

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