Title :
A continuous-time adaptive FIR equalizer with LNV-AIL delay line for 2.5Gb/s data communication
Author :
Lin, Xiaofeng ; Lee, Hoi ; Liu, Jin
Author_Institution :
Texas Instrum., Inc., Dallas, TX
Abstract :
This paper presents a continuous-time adaptive FIR filter as a fractionally spaced receiver equalizer. Inverter-based delay units with active-inductor load (INV-AIL) are proposed to implement the tap delay line for the bandwidth enhancement. A pulse extraction technique is employed for the equalizer adaptation to different channel characteristics. Implemented in a standard CMOS 0.25-mum process, the proposed adaptive equalizer has achieved over 75% horizontal eye opening when the PCB trace varies from 20 to 120 inches for 2.5Gb/s transmission in the adaptation mode
Keywords :
CMOS analogue integrated circuits; FIR filters; adaptive equalisers; adaptive filters; continuous time filters; data communication; delay lines; high-speed techniques; 0.25 micron; 2.5 Gbit/s; CMOS process; FIR filters; LNV-AIL delay line; PCB trace; active-inductor load; bandwidth enhancement; continuous-time adaptive FIR equalizer; data communication; inverter-based delay unit; pulse extraction technique; tap delay line; Bandwidth; Circuit synthesis; Data communication; Delay lines; Equalizers; Finite impulse response filter; Intersymbol interference; Mirrors; Resistors; Voltage;
Conference_Titel :
Custom Integrated Circuits Conference, 2005. Proceedings of the IEEE 2005
Conference_Location :
San Jose, CA
Print_ISBN :
0-7803-9023-7
DOI :
10.1109/CICC.2005.1568693
