Title :
A 70dB MTPR integrated programmable gain/bandwidth 4th-order Chebyshev highpass filter for ADSL/VDSL receivers in 65nm CMOS
Author :
Lin, Fang ; Yu, Xinyu ; Ranganathan, Sumant ; Kwan, Tom
Author_Institution :
Broadcom Corp., San Jose, CA
Abstract :
This paper presents a 4th-order Chebyshev HPF in 65 nm CMOS process with programmable gain and corner frequency to support ADSL and 5/6 band VDSL applications. The HPF improves noise performance by applying capacitive feedback and feedforward in the filter. It achieves a 70 dB MTPR and -161 dBm/Hz (2.8 nV/radicHz) input referred noise for ADSL mode. An IM3 of -80 dBc at 10 MHz is measured for VDSL mode.
Keywords :
CMOS integrated circuits; Chebyshev filters; digital subscriber lines; high-pass filters; radio receivers; 4th-order Chebyshev highpass filter; ADSL receivers; CMOS process; VDSL receivers; capacitive feedback; gain 70 dB; programmable gain; size 65 nm; Bandwidth; Capacitors; Chebyshev approximation; Feedback; Filters; Frequency; Low-frequency noise; Noise reduction; Peak to average power ratio; Resistors;
Conference_Titel :
VLSI Circuits, 2008 IEEE Symposium on
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-1804-6
Electronic_ISBN :
978-1-4244-1805-3
DOI :
10.1109/VLSIC.2008.4585948
