A universal quad AFE with integrated filters for VDSL, ADSL, and G.SHDSL

This paper presents a highly optimized quad analog front end (AFE) with integrated filters. With only firmware programming, this device supports VDSL, ADSL, HS-ADSL, and G.SHDSL as well as GlobeSpanVirata's proprietary DSL. This device is integrated in a 0.35/0.5 /spl mu/m CMOS process and its power dissipation scales as a function of the application requirements. With filter blocks activated and data converters clocked at 17.664 Mhz, the power dissipation is /spl les/ 350 mW per channel. This device has been used in systems.

[1]  A. Bellaouar,et al.  Codec for echo-canceling, full-rate ADSL modems , 1999, 1999 IEEE International Solid-State Circuits Conference. Digest of Technical Papers. ISSCC. First Edition (Cat. No.99CH36278).

[2]  J. Jacob Wikner,et al.  CMOS Data Converters for Communications , 2000 .

[3]  John P. Guido,et al.  A 4 channel analog front end for central office ADSL modems , 2000, Proceedings of the IEEE 2000 Custom Integrated Circuits Conference (Cat. No.00CH37044).

[4]  Nianxiong Nick Tan,et al.  ANALOG FRONT-END DESIGN CONSIDERATIONS FOR DSL , 2002 .

[5]  R. Halbach,et al.  A CMOS ADSL codec for central office applications , 2000, Proceedings of the IEEE 2000 Custom Integrated Circuits Conference (Cat. No.00CH37044).

[6]  R. Savage.  What about 4-H? , 1988 .

[7]  A. Wiesbauer,et al.  A 1.8V 450mW VDSL 4-band analog front end IC in 0.18μm CMOS , 2002 .

[8]  E. Moons,et al.  Analog front end for DMT-based VDSL , 2002, 2002 IEEE International Solid-State Circuits Conference. Digest of Technical Papers (Cat. No.02CH37315).

[9]  Xiaomin Si,et al.  A CMOS analog front-end IC for DMT ADSL , 1999, 1999 IEEE International Solid-State Circuits Conference. Digest of Technical Papers. ISSCC. First Edition (Cat. No.99CH36278).