A CMOS subscriber line audio processing circuit including adaptive balance

作者: S.J. Poole , G. Surace , B. Singh , N.P. Dyer

DOI: 10.1109/ISCAS.1988.15316

关键词: Electronic engineeringElectronic circuitLine cardDigital filterAudio signalEngineeringLocal loopAudio signal processingCMOSInterface (computing)

摘要: The design of a CMOS subscriber-line audio processing circuit including self-adaptive trans-hybrid balance has been described. Its transmission performance shown to exceed CCITT specifications with up 12 dB transmit gain and receive loss. This achieved using single 5-V power supply while maintaining simple analog interfaces subscriber line interface circuit. will enable the programmable flexible cards, superior over those realized more conventional components. >

参考文章(4)
A. Constantinides, R. Valenzuela, An Efficient and Modular Transmultiplexer Design IEEE Transactions on Communications. ,vol. 30, pp. 1629- 1641 ,(1982) , 10.1109/TCOM.1982.1095629
K.K.K. Lam, M.A. Copeland, Reply: Noise-cancelling switched-capacitor (SC) filtering technique Electronics Letters. ,vol. 19, pp. 810- 811 ,(1983) , 10.1049/EL:19830553
J. Candy, A Use of Double Integration in Sigma Delta Modulation IEEE Transactions on Communications. ,vol. 33, pp. 249- 258 ,(1985) , 10.1109/TCOM.1985.1096276
S. Tewksbury, R. Hallock, Oversampled, linear predictive and noise-shaping coders of order N g 1 IEEE Transactions on Circuits and Systems. ,vol. 25, pp. 436- 447 ,(1978) , 10.1109/TCS.1978.1084499