With a nonideal CDBA device, these design equations would alter. Semiconductor Datashedt DatabookIntersil Corp. We propose here a new electronically tunable differential integrator using a CDBA; the control voltage of a multiplier element, incorporated suitably in the circuit, tunes electronically. The realisability conditions for a true differential integrator now ddatasheet to Here we neglect the error products since ; thus. It may be mentioned here that one can select any of the two default values of the multiplier constant and for the ICL multiplier device [ 7 — ] in order to enhance the tuning range concomitantly while keeping and as the limit.

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With a nonideal CDBA device, these design equations would alter. Semiconductor Datashedt DatabookIntersil Corp. We propose here a new electronically tunable differential integrator using a CDBA; the control voltage of a multiplier element, incorporated suitably in the circuit, tunes electronically.

The realisability conditions for a true differential integrator now ddatasheet to Here we neglect the error products since ; thus. It may be mentioned here that one can select any of the two default values of the multiplier constant and for the ICL multiplier device [ 7 — ] in order to enhance the tuning range concomitantly while keeping and as the limit.

Effect of the multiplier device nonideality may be derived by expressing so that we can effectively write for sensitivity calculation, which yields. The responses had been measured for a range of? In this analysis, we neglected the parasitic series resistance?

We obtained three such graphs corresponding to oscillation generation at the nominal frequencies of? We tested the frequency response of the integrator with antiphase input sinusoid signals and observed the phase error of about 5.

Active and Passive Electronic Components By Reanalysis assuming finite quantities, we get a modified transfer dataeheet. The CMRR had been measured to be 96?

The proposed circuit is shown in Figure 1. The tuning error is then derived as shown in Figure 2 e and Table 2. The ICL device is a four-quadrant analog multiplier whose output is proportional to the electronic product of two input voltage signals with a transmission constant [ 7dataasheet ].

MHz with a typical set of values? Voltage tunable differential integrator using CDBA-multiplier composite block. Active and Passive Electronic Components. With identical integrator, the oscillation frequency would be. Subsequently, a double integrator type VCQO had been designed and tested in a frequency range of? The deviation is then computed from the intersection of the function with the real axis of the plot following the Barkhaussen criterion.

It may be seen that the select-frequency was reported in the range of a maximum of? The design of a voltage controlled quadrature oscillator VCQO based on the proposed integrator had been satisfactorily implemented. The device imperfections may be expressed in terms of some port mismatch ratios [ 2 — 4 ] given by the relations The and terminals of the CDBA however are internally grounded; hence In the literature, the mismatch ratios are postulated in terms of some low-magnitude error [ 2 — 6 ] quantities given byand for an ideal device the errors vanish.

We design a VCQO using the proposed integrator in a two integrator loop, each being used single ended, one inverting and the other in noninverting mode, that is, from 3 we designed andthereafter cascading the two integrators in a loop. The ick stability factor is evaluated by at where is loop phase shift.

For example, if we assume for a desired at? To receive news and publication updates for Active and Passive Electronic Components, enter your email address in the box below. This is an open access article distributed under the Creative Commons Attribution Licensewhich permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Embedding the HA multiplier device [ 78 ] with BW? Abstract A new dual-input differential input active integrator using a current differencing buffered amplifier CDBA is proposed. View at Google Scholar A. We therefore get the realisability conditions for a true differential integrator, putting ; to 4, as here we assumed.

Subscribe to Table of Contents Alerts. Intersil Datasheet, file number Albeit other electronically tuned active realisations were reported recently in relatively lower frequency-range using CFA [ 14 ], current conveyors [ ], or OTA-based allpass filter [ 17 ], such a function circuit using the CDBA had not yet been presented. The quadrature oscillator finds various applications in SSB modulators and spectral phase measurements: In order to examine the tuning error in we had carried out a new type of measurement using the Nyquist plot of the loop transfer function of the double-integrator loop in the vicinity of as shown in Figure 2 d.

MHzand improved versatility make it quite suitable for analog signal conditioning and active filter design applications. Tuning error and THD measured at three different tuning frequencies. Related Articles

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Meztijinn The proposed circuit is shown in Figure 1. The nodal equations characterizing an ideal CDBA element are [ 1 ]. A multiplier element is appropriately used in the circuit whose control voltage tunes the integrator time constant electronically. Intersil Datasheet, file number After putting we obtained since we selected. We tested the frequency response of the integrator with antiphase input sinusoid signals and observed the phase error of about 5. The design of a voltage controlled quadrature oscillator VCQO based on the proposed integrator had been satisfactorily implemented. MHz with suitable design.

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