The HDMI open drain transmitter is designed to harvest power from the receiver, through the termination impedances during signaling. There is no local power supply needed at the transmitter side, neither any power is taken from the receiver apart from whatever power comes out of it during standard signaling. The zero power HDMI Transmitter capable of datarate 4.95Gbps, i.e. 1.65Gbps per Channel is designed in 65nm technology.
The output driver of the HDMI transmitter is designed in 32nM using MOS of 28 Å gate oxide thickness. These MOS transistors are capable of handling 1.8v only. The circuit protects the MOS transistors exposed to 3.3v at the receiver termination, when the transmitter is power on, as well as, when it is power off. The area of the implemented HDMI Transmitter physical layer is 0.283mm 2 and power consumption is 12mW @ 2.22Gbps (740Mbps/Channel) as seen on silicon.
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