A current-mode based field programmable analog array architecture for signal processing applications

Quan, Xiangchun; Embabi, S.H.K.; Sánchez-Sinencio, E.

doi:10.1109/cicc.1998.694980

Cited by 29 publications

(29 citation statements)

References 5 publications

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“…This technique has been used also in realizing a programmable current amplifier [3]. The parallelism technique has already been exploited for the design of band-pass filters [4,6,7], in this work we use this technique without switches in the signal path; this will let our band-pass filter operates at a wider frequency range. Moreover, integrated grounded programmable capacitors allow for finer tuning of the filter parameters.…”

Section: Introductionmentioning

confidence: 99%

“…For signals with frequencies higher than few tens of megahertz, continuous-time circuits are the best choice for designers to achieve such frequencies. On the other hand, transconductor-based circuits are currently an active research area [3][4][5][6][7][8][9][10][11]. The linearity and relatively wide bandwidth of transconductors make these circuits appropriate for continuous-time filters.…”

Section: Introductionmentioning

confidence: 99%

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Programmable monolithic Gm-C band-pass filter: design and experimental results

Lebel

Assi

2007

Analog Integr Circ Sig Process

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We propose in this paper a programmable bandpass filter based on an array of fully differential transconductance circuits that controls the filter parameters. The signal path does not contain any switch, and fine-tuning of the filter parameters is implemented using programmable capacitors. A digital building block is implemented in the proposed band-pass filter to tune its central frequency as well as its bandwidth. The filter circuit is based on a biquad topology, which is designed and implemented with CMOS 0.18 lm technology. Experimental results show a programming ability of the center frequency between 5.9 and 58 MHz, and the quality factor can be tuned from 0.36 to 10. These features are obtained for a total power consumption of less than 10.5 mW from a single 1.8 V power supply.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Programmable monolithic Gm-C band-pass filter: design and experimental results

Lebel

Assi

2007

Analog Integr Circ Sig Process

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“…Continuoustime devices can be implemented by means of translinear elements [1,2], transconductors [3], current integrators [4] or current conveyors [5], while discrete-time implementations may use switched capacitor topologies [6,7] or switched current circuits. The FPAAs can be configured for applications such as filtering [8], neural networks [9], industrial control [10], signal processing [11], V-F converters and aerospace communications [12], among others.…”

Section: Introductionmentioning

confidence: 99%

Translinear signal processing circuits in standard CMOS FPAA

Martínez-Alvarado

Madrenas

Fernandez

2009

2009 16th IEEE International Conference on Electronics, Circuits and Systems - (ICECS 2009)

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Abstract-In this paper, the implementation of signal processing circuits on a novel translinear Field-Programmable Analog Array (FPAA) testchip is reported. The FPAA testchip is based on a 0.35-micron, fully CMOS translinear element, which is the core block of a reconfigurable analog cell. The FPAA embeds a 5 × × × 5 cell array. As implementation examples, a four-quadrant multiplier with five decade dynamic range and a programmable fourth-order low-pass filter with up to 7 M Hz bandwidth have been mapped on the translinear FPAA. 14 cells have been used for the four-quadrant multiplier while 18 cells were needed for the fourth-order low-pass filter.

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“…Comparison of integrator's phase delay with its desired value gives a signal which can be used in the manual or automatic correction of . Because the comparison of signals shifted by 180 exactly is convenient, four integrators have been used, which give phase shift exactly equal to 180 for frequency (10) Assuming that time constant must be tuned to the frequency , the frequency of the reference signal to be applied to the input of the reference path is: (11) Having applied the reference signal, control voltage should be adjusted so that the phase shift of 180 appears on the output of the reference path. Tuning accuracy depends on the precision of the phase detector (assuming equal delays on both paths).…”

Section: A Tuning Using Four Lossy Integratorsmentioning

confidence: 99%

“…There have been some programmable analog circuits in the literature [1]- [8], [10]- [13] as well as commercial chips (MPAA020 from Motorola [9], AN10E40 from Anadigm [31], or ispPAC family from Lattice Semiconductor Corporation [30]). However, general-purpose FPAAs suitable for high-frequency signal processing applications have not yet appeared.…”

Section: Introductionmentioning

confidence: 99%

A field programmable analog array for CMOS continuous-time OTA-C filter applications

Pankiewicz

Wójcikowski

Szczepański

et al. 2002

IEEE J. Solid-State Circuits

124

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Abstract-A programmable high-frequency operational transconductance amplifier (OTA) is proposed and analyzed. A general configurable analog block (CAB) is presented, which consists of the proposed programmable OTA, programmable capacitor and MOSFET switches. Using the CABs, the universal tunable and field programmable analog array (FPAA) can be constructed, which can realize many signal-processing functions, including filters. A tuning circuit is also discussed. The proposed OTA has been simulated and fabricated in CMOS technology. The results show that the OTA has the transconductance tunable/programmable in a wide range of 700 times and the 3-dB bandwidth larger than 20 MHz. A universal 5 8 CAB array has been fabricated. The chip has also been configured to realize OTA-C 60-kHz and 500-kHz bandpass filters based on ladder simulation and biquad cascade.Index Terms-CMOS analog integrated circuits, continuous time filters, field programmable analog circuits, programmable circuits, programmable filters.

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A current-mode based field programmable analog array architecture for signal processing applications

Cited by 29 publications

References 5 publications

Programmable monolithic Gm-C band-pass filter: design and experimental results

Programmable monolithic Gm-C band-pass filter: design and experimental results

Translinear signal processing circuits in standard CMOS FPAA

A field programmable analog array for CMOS continuous-time OTA-C filter applications

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