Noise performances of OTA-C filters

Espinosa, G.; Montecchi, F.; Sánchez-Sinencio, E.; Maloberti, Franco

doi:10.1109/iscas.1988.15374

Cited by 16 publications

(8 citation statements)

References 6 publications

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“…7, the low frequency noise (Flicker noise) is about 25 √ ⁄ at DC and drops with frequency, the corner frequency of Flicker noise is about 100 Hz. Output noise of OTA-C filter is a contribution of its all OTAs [14,15]. Notice, however, that noise magnitude is small with respect to the input voltage signal considered in the present design (200 mVpp).…”

Section: /5mentioning

confidence: 95%

A 3<sup>rd</sup> order OTA-C low pass filter for W-CDMA standard applications in zero-IF receiver

Ochoa

Guerrero

Hernandez

2013

CONIELECOMP 2013, 23rd International Conference on Electronics, Communications and Computing

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This work presents the design of a 3 rd -order low-pass OTA-C filter for W-CDMA protocol wireless communications applications. The filter is designed for Butterworth response with corner frequency of 2.68 MHz, stop-band frequency of 10 MHz, pass-band ripple of 3 dB and stop-band attenuation of 34 dB. Filter design is performed in OnSemi 0.5µm CMOS process. The involved transconductor consists of a single-stage fully-differential OTA with dynamic source degeneration and common mode feedback. 978-1-4673-6155-2/13/$31.00

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Section: /5mentioning

confidence: 95%

A 3<sup>rd</sup> order OTA-C low pass filter for W-CDMA standard applications in zero-IF receiver

Ochoa

Guerrero

Hernandez

2013

CONIELECOMP 2013, 23rd International Conference on Electronics, Communications and Computing

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“…All The transconductances in all the transformed G m -C filters are simulated using the CMOS transconductance realization given in [17]. Also, all of the op-amps and the buffers used in the op-amp-RC structures are simulated using the high speed op-amp AD817 [18].…”

Section: Pspice Simulationsmentioning

confidence: 99%

New op-amp-RC to G m -C transformation method

Ahmed

Awad

Soliman

2006

Analog Integr Circ Sig Process

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A new transformation method is proposed and used to transform op-amp-RC circuits to G m -C ones with only grounded capacitors. The proposed method enables the generation of high-performance G m -C filters that benefit from the advantages of good and well-known op-amp-RC structures and at the same time feature electronic tunability, high frequency capability and monolithic integration ability. An attractive feature of the proposed method is that it results in G m -C structures with only grounded capacitors in spite of the presence of floating capacitors in the original op-amp-RC circuits.

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“…The transconductance values ofĜ 1 throughĜ 5 are set to 112.4 µA/V. The transconductance amplifiers are simulated using the CMOS realization given in [9]. Figure 11 shows the BP magnitude response of the circuit of Figure 7d.…”

Section: Pspice Simulationsmentioning

confidence: 99%

“…This technique has hence received much attention [1]- [4], [6], [8], [9], [11]- [14], [17]- [24], [26]- [33]. Also, current-mode techniques have been recognized to offer potential advantages for applications both in continuous-time and in sampled-data signal processing [19].…”

Section: Introductionmentioning

confidence: 99%

“…The transconductance amplifiers inFigures 3 and 4eare simulated using the CMOS realization given in[9].Figures 10a, 10b, 10c, and 10d show the LP, BP, HP, and Notch magnitude responses of the two structures of Figures 3 and 4e. As shown in Figure 10, the proposed transformed Gm-C structure of Figure 4e and the voltage-mode Gm-C structure of Figure 3 feature magnitude responses that nearly match the The LP magnitude response of structures of Figures 3 and 4e at f o = 100 kHz and Q = 30.…”

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confidence: 99%

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A Transformation Method from Voltage-Mode OP-Amp-RC Circuits to Current-Mode Gm-C Circuits

Ahmed

Awad

Soliman

2006

Circuits Syst Signal Process

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A new transformation method is presented and used to transform voltage-mode op-amp-RC circuits to current-mode Gm-C ones. The proposed method enables the generation of high-performance Gm-C filters that benefit from the advantages of good and well-known op-amp-RC structures and the advantages of the current-mode circuits, and at the same time feature electronic tunability, high frequency capability, and monolithic integration ability. An attractive feature of the proposed method is that it results in Gm-C structures with only grounded capacitors in spite of the presence of floating capacitors in the original op-amp-RC circuits and it utilizes a small number of transconductors. Moreover, simultaneous multiple outputs are easily available in the transformed currentmode Gm-C circuits.

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Noise performances of OTA-C filters

Cited by 16 publications

References 6 publications

A 3<sup>rd</sup> order OTA-C low pass filter for W-CDMA standard applications in zero-IF receiver

A 3<sup>rd</sup> order OTA-C low pass filter for W-CDMA standard applications in zero-IF receiver

New op-amp-RC to G m -C transformation method

A Transformation Method from Voltage-Mode OP-Amp-RC Circuits to Current-Mode Gm-C Circuits

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