发明名称 Differential line receiver
摘要 <p>In a differential line receiver circuit having differential amplifier circuit where output rise and fall times are influenced by the ability of internal current sources to charge parasitic capacitances, a feedback circuit is provided to tune those current sources so as to deliver equal rise and fall time on both outputs. According to one embodiment a detector signal is derived from timing errors resulting from such rise and fall time discrepancies by means of a nested CMOS inverter arrangement coupled to an integrating element, and then used to control one or both of said current sources. It is further disclosed how deviations in the centre voltage of the internal power supplies caused by the current source tuning can be allowed for by pre-processing of the signal at the input of the differential line receiver circuit by means of a differential signal transfer circuit which is able to impose a common mode signal on the input signal so as to match the centre voltage of the differential amplifiers internal power supply. &lt;IMAGE&gt;</p>
申请公布号 EP1274171(A1) 申请公布日期 2003.01.08
申请号 EP20010115699 申请日期 2001.07.05
申请人 TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) 发明人 HAULIN, TORD;HEDBERG, MATS OLOF JOAKIM
分类号 H03K19/003;H04L25/02;(IPC1-7):H03K19/003 主分类号 H03K19/003
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