Continuous time band-pass Sigma-Delta modulator and electronic equipment

The invention provides a continuous time band-pass Sigma-Delta modulator and an electronic device. The continuous time band-pass Sigma-Delta modulator comprises a transconductance operational amplifier, a passive resonator, a sampling quantizer, a current feedback module and a voltage feedback modul...

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Hauptverfasser: WAN XIANJIE, WANG YOUHUA, FU DONGBING, LUO YONGSHUANG, ZHU CAN, YANG NAN
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention provides a continuous time band-pass Sigma-Delta modulator and an electronic device. The continuous time band-pass Sigma-Delta modulator comprises a transconductance operational amplifier, a passive resonator, a sampling quantizer, a current feedback module and a voltage feedback module. According to the invention, the continuous time band-pass Sigma-Delta modulator is designed by combining the operational transconductance amplifier, the passive resonator, the sampling quantizer, the current feedback module and the voltage feedback module, voltage feedback is added on the basis of conventional current feedback, current feedback and voltage feedback can be realized at the same time, the degree of freedom of feedback is increased, and the performance of the modulator is improved. The whole modulator can realize any noise transfer function of the band-pass Sigma-Delta modulator, so that the problem that the system performance of the continuous time band-pass Sigma-Delta modulator based on the induc