IMPEDANCE AND SWING CONTROL FOR VOLTAGE-MODE DRIVER

A driver circuit includes a plurality of output circuits (208) coupled in parallel between a differential input (Inn, Inp) and a differential output (Txn, Txp) and having a first common node (VrefP) and a second common node (Vrefn). Each of the plurality of output circuits includes a series combinat...

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Bibliographische Detailangaben
Hauptverfasser:	FRANS YOHAN, LIM SIOK-WEI, ZHAO HONGYUAN, CHAN KOK-LIM, NARANG NAKUL, KOAY CHIN-YANG, TAN KEE-HIAN, CHANG KUN-YUNG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BASIC ELECTRONIC CIRCUITRY ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY PULSE TECHNIQUE TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Beschreibung
Zusammenfassung:	A driver circuit includes a plurality of output circuits (208) coupled in parallel between a differential input (Inn, Inp) and a differential output (Txn, Txp) and having a first common node (VrefP) and a second common node (Vrefn). Each of the plurality of output circuits includes a series combination of a pair of inverters (Mp1, MP2 and Mn1, Mn2) and a pair of resistors (Rp, Rn), coupled betweenthe differential input and the differential output; first source terminals of the pair of inverters coupled to the first common node; and second source terminals of the pair of inverters coupled to the second common node. The driver circuit further includes a first voltage regulator (2101) having an output coupled to the first common node of the plurality of output circuits; a second voltage regulator (2102) having an output coupled to the second common node of the plurality of circuits; and a current compensation circuit (206) coupled between the outputs of the first voltage regulator and the second voltage regulato