A 5-V AC-powered CMOS filter-selectivity booster for POTS/ADSL splitter size reduction

Eduard Säckinger; Aner Tennen; Dima Shulman; Barkat Wani; Marta Rambaud; Drahoslav Lím; Fred Larsen; George S. Moschytz

doi:10.1109/jssc.2006.884399

A 5-V AC-powered CMOS filter-selectivity booster for POTS/ADSL splitter size reduction

Eduard Säckinger, Aner Tennen, Dima Shulman, Barkat Wani, Marta Rambaud, Drahoslav Lím, Fred Larsen, George S. Moschytz

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

An active POTS filter consisting of a small external L-C low-pass filter and a selectivity booster chip is presented. The filter achieves an ADSL attenuation of more than 70 dB at 30 kHz while maintaining a passband flatness of 0.2 dB. This active filter requires fewer transformers and is smaller than a passive filter with the same performance. The 0.5-μm CMOS booster chip contains a fifth-order continuous-time filter, a low output-impedance driver, and an active rectifier and consumes 50 mW from a 5-V AC supply.

Original language	English
Pages (from-to)	2877-2883
Number of pages	7
Journal	IEEE Journal of Solid-State Circuits
Volume	41
Issue number	12
DOIs	https://doi.org/10.1109/jssc.2006.884399
State	Published - Dec 2006

Keywords

Active filters
CMOS analog integrated circuits
Continuous time filters
Current limiters
Driver circuits
Feedback circuits
Miller effect
POTS filters
POTS/ADSL splitters
Power supplies
Rectifiers
Transformers

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10.1109/jssc.2006.884399

Cite this

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title = "A 5-V AC-powered CMOS filter-selectivity booster for POTS/ADSL splitter size reduction",

abstract = "An active POTS filter consisting of a small external L-C low-pass filter and a selectivity booster chip is presented. The filter achieves an ADSL attenuation of more than 70 dB at 30 kHz while maintaining a passband flatness of 0.2 dB. This active filter requires fewer transformers and is smaller than a passive filter with the same performance. The 0.5-μm CMOS booster chip contains a fifth-order continuous-time filter, a low output-impedance driver, and an active rectifier and consumes 50 mW from a 5-V AC supply.",

keywords = "Active filters, CMOS analog integrated circuits, Continuous time filters, Current limiters, Driver circuits, Feedback circuits, Miller effect, POTS filters, POTS/ADSL splitters, Power supplies, Rectifiers, Transformers",

author = "Eduard S{\"a}ckinger and Aner Tennen and Dima Shulman and Barkat Wani and Marta Rambaud and Drahoslav L{\'i}m and Fred Larsen and Moschytz, {George S.}",

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AU - Wani, Barkat

AU - Rambaud, Marta

AU - Lím, Drahoslav

AU - Larsen, Fred

AU - Moschytz, George S.

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KW - Active filters

KW - CMOS analog integrated circuits

KW - Continuous time filters

KW - Current limiters

KW - Driver circuits

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KW - Miller effect

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A 5-V AC-powered CMOS filter-selectivity booster for POTS/ADSL splitter size reduction

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Keywords

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