CMOS small signal terminated receiver

摘要

A terminator circuit for connection to a network can be fabricated and used within CMOS-SOI (complementary metal oxide semiconductor-silicon on insulator) for carrying small logic level signals for connecting data from a network's first circuit to a network's second circuit in which a network's input terminal connects a terminator circuit to the network's second circuit to act as a terminator on the data line passing data from the first circuit to the second circuit. The terminator circuit has a reference circuit coupled to a terminal circuit and to a differential hysteresis receiver. The reference circuit has devices back to back source coupled devices to each other for a tuned center reference voltage node. An upper level power source is connected to one side of the reference voltage node and a lower reference voltage power source is connected to the other side of the reference voltage node. The voltage level above the common tuned reference voltage and a lower level voltage is supplied to the terminator's corresponding input terminal circuit control nfet and pfet mirror devices also connected respectively to lower and upper level supply power to control each of their turn on voltages. Resistors of the reference path establish the swing voltage of the terminator as being that approximating an ideal 50 ohm split resistor terminator. The tuned voltage levels supplied to the terminator input circuit for the termination to the network as a terminator on the data line passing data from said first circuit to said second circuit supplying, and also, supplied to the hysteresis differential receiver which is integrated into the terminator circuit to set up a threshold tuned reference voltage between the logic levels of said terminator input circuit for the network.