Title :
A CMOS line driver with 80-dB linearity for ISDN applications
Author :
Khorramabadi, Haideh
Author_Institution :
AT&T Bell Lab., Holmdel, NJ, USA
fDate :
4/1/1992 12:00:00 AM
Abstract :
A high-performance CMOS line driver for ISDN U-interface transceiver applications has been designed and fabricated. Careful study of requirements and trade-offs affecting linearity, power efficiency, and quiescent current presented in this work has resulted in a circuit structure featuring a highly linear input/output characteristic and well-controlled quiescent current. The prototype line driver is capable of delivering a 5-Vpp signal of up tp 80 kHz to a 60-Ω load while exhibiting linearity on the order of 77 ± 5 dB and operating from a single 5-V power supply. Linearity better than 70 dB is maintained for load resistances as low as 20 Ω
Keywords :
CMOS integrated circuits; ISDN; driver circuits; linear integrated circuits; 5 V; 60 to 20 ohm; 80 kHz; CMOS line driver; ISDN; U-interface transceiver applications; highly linear input/output characteristic; linearity; load resistances; power efficiency; prototype; quiescent current; requirements; single 5-V power supply; trade-offs; Driver circuits; ISDN; Impedance; Linearity; Nonlinear distortion; Power supplies; Pulse transformers; Resistors; Transceivers; Transmitters;
Journal_Title :
Solid-State Circuits, IEEE Journal of
