Capacitive coupling and quantized feedback applied to conventional CMOS technology
Capacitive coupling and quantized feedback applied to conventional CMOS technology
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电容耦合和量化反馈应用于传统 CMOS 技术
DOI：
10.1109/cicc.1996.510559
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
W. Fischer
中科院分区：
文献类型：
--
作者：
T. Gabara;W. Fischer
在焊盘下方形成的片上电容器用于阻断外部输入信号的直流电平。使用自触发判决电路的量化反馈用于在接收器中建立局部直流电压电平，并消除“零漂”效应。对0.5/SPL MU/m芯片的测试表明：2/SUP 31/-1序列的误码率测试在600 Mb/S下没有错误；电路检测到1 kb/S的低频信号，表明不需要编码；输入信号可以在Vdd和Vss之间的任何地方直流偏置，仅受ESD二极管限制，而不会影响最终恢复的cmos波形。
An on-chip capacitor which is formed under a bonding pad is used to block the DC level of an external input signal. Quantized feedback using a self-triggered decision circuit is used to establish local DC voltage levels in the receiver and eliminate the "zero wander" effect. Measurement of a 0.5 /spl mu/m CMOS chip has demonstrated that: a BER (Bit Error Rate) test for a 2/sup 31/-1 sequence showed no errors at 600 Mb/s; the circuit detected a low frequency signal of 1 Kb/s indicating that coding is not required; and the input signal can be DC biased anywhere, limited only by the ESD diodes, between VDD and VSS without affecting the final recovered CMOS waveform.