| 摘要 |
A pseudo-differential input receiver is disclosed which is configured to support a wide-range of reference voltage Vref and a wide-range frequency interface with no parallel termination are described herein. The pseudo-differential receiver implementations described herein are very efficient in terms of area, power, and performance. A wide-frequency-range Vref-adjustable input receiver is described herein. The receiver can be configured with a Vref-monitoring PMOS helper FET or an enabled stacked PMOS helper FET to enable the receiver to work at Vref=0V like a conventional CMOS receiver. The receiver can also be configured with a Vref-monitoring NMOS helper FET to enable a Vref-based input receiver to work with programmability on bias currents & trip-point at Vref=(0.5~0.7)Vdd, depending on the ratio of output driver's impedance and parallel on/off-die termination impedance.
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