2002 IEEE International Solid-State Circuits Conference. Digest of Technical Papers (Cat. No.02CH37315)
DOI: 10.1109/isscc.2002.993064
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A 1.8V 450mW VDSL 4-band analog front end IC in 0.18μm CMOS

Abstract: VDSL transceivers exploit an extremely high analog bandwidth. Therefore VDSL modems can achieve bit-rates to 52Mb/s. The required analog input dynamic range is approximately 90dB. For standard 4-band VDSL, 12MHz bandwidth is required, comprising two up-stream and two down-stream signals as depicted in Figure 19.4.1. A robust digital modulation technique (single carrier QAM) keeps linearity requirements moderate compared to other DSL modems. Harmonic distortion components up to -55dBc can be tolerated.A chipset… Show more

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Cited by 5 publications
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“…The open-loop configuration is also characterized by a poor linearity in the voltage to current conversion, whereas the closed-loop one can have a highly linear voltage-to-voltage transfer function. Since the new OFDM-based communication standards require high linearity for any circuit in the signal path, in order to minimize the intermodulation among the multiple carriers, new highly linear OTAs are required in order to meet the linearity and bandwidth requirements [3][4][5]. The use of open-loop OTAs also avoid the excessive power consumption required by typical high-bandwidth amplifiers with global feedback.…”
Section: Introductionmentioning
confidence: 99%
“…The open-loop configuration is also characterized by a poor linearity in the voltage to current conversion, whereas the closed-loop one can have a highly linear voltage-to-voltage transfer function. Since the new OFDM-based communication standards require high linearity for any circuit in the signal path, in order to minimize the intermodulation among the multiple carriers, new highly linear OTAs are required in order to meet the linearity and bandwidth requirements [3][4][5]. The use of open-loop OTAs also avoid the excessive power consumption required by typical high-bandwidth amplifiers with global feedback.…”
Section: Introductionmentioning
confidence: 99%