Title :
High-precision, programmable 1-10 MHz bandwidth, 0-20 dB gain communication channel for digital video applications
Author :
Siniscalchi, Patrick ; Wyszynski, Adam ; Choi, Davy
Author_Institution :
Texas Instrum. Inc., Dallas, TX, USA
Abstract :
The analog signal processing portion of a digital video demodulation scheme is built in a 5 V BiCMOS process. The channel is both cutoff frequency and gain programmable from 1→10 MHz and 0→20 dB, respectively. The filter is realized as a 4th order Gm/C Butterworth lowpass and includes in-package trim for accurate control. A programmable gain amplifier is placed in front of the filter for better S/N performance (>40 dB) and lower intermodulation distortion (>-52 dB). The PSRR of this single-ended channel is better than 40 dB. The channel dissipates 250 mW
Keywords :
BiCMOS analogue integrated circuits; analogue processing circuits; circuit tuning; demodulation; gain control; video amplifiers; video signal processing; 0 to 20 dB; 1 to 10 MHz; 250 mW; 40 dB; 5 V; BiCMOS process; Butterworth lowpass filter; IMD reduction; analog signal processing; cutoff frequency programmable type; digital video demodulation scheme; high-precision communication channel; in-package trim; intermodulation distortion; programmable bandwidth; programmable gain; programmable gain amplifier; Bandwidth; BiCMOS integrated circuits; Communication channels; Cutoff frequency; Demodulation; Differential amplifiers; Electronics packaging; Filters; Performance gain; Transconductance;
Conference_Titel :
Custom Integrated Circuits Conference, 1996., Proceedings of the IEEE 1996
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-3117-6
DOI :
10.1109/CICC.1996.510517
