Abstract: A mobile wireless communications device may include a portable housing including at least one electrically conductive housing portion configured to function as an antenna. The mobile wireless communications device may also include a printed circuit board (PCB) carried by the portable housing, and wireless transceiver circuitry carried by the PCB and including at least one circuit element carried by the PCB. The mobile wireless communications device may also include at least one current shunt component coupled between the at least one electrically conductive housing portion and the at least one circuit element.

Abstract: A mobile wireless communications device may include a portable housing that may include an electrically conductive continuous ring defining a perimeter of the portable housing. The electrically conductive continuous ring may be configured to function as an antenna. The mobile wireless communications device may further include a printed circuit board (PCB) carried by the portable housing and may include an electrically conductive layer defining a ground plane. The mobile wireless communications device may further include wireless transceiver circuitry carried by the PCB and coupled to the antenna. The mobile wireless communications device may also include an electrically conductive shorting member coupled between the electrically conductive continuous ring and the ground plane.

Abstract: A circuit for reading and programming a fuse. The electronic circuit includes a data fuse coupled to a data node and a reference fuse coupled to a reference node. A programming circuit is coupled to the data node, wherein the programming circuit is configured to, when activated, cause the data fuse to be programmed. A sensing circuit is configured to draw current from the data node and the reference node in order to develop a voltage differential between the data node and the reference node during a read operation. A read circuit is configured to, when activated, enable the sensing circuit to develop the voltage differential during the read operation. A protection circuit is configured to form a voltage divider within the sensing circuit during programming of the fuse.

Abstract: An electronic circuit. The electronic circuit includes a first circuit leg coupled to a first supply voltage node and a second supply voltage node. The first circuit leg includes a first reference current circuit configured to produce a first reference current and a second reference current circuit configured to produce a second reference current. The electronic circuit further includes a second circuit leg coupled in parallel with the first circuit leg. The second circuit leg includes a first transistor coupled to form a current mirror with the first reference current circuit and a second transistor coupled to form a current mirror with the second reference current circuit. The source terminals of each of the first and second transistors are coupled together to form a third supply voltage node.

Abstract: An electronic circuit. The electronic circuit includes a first circuit leg coupled to a first supply voltage node and a second supply voltage node. The first circuit leg includes a first reference current circuit configured to produce a first reference current and a second reference current circuit configured to produce a second reference current. The electronic circuit further includes a second circuit leg coupled in parallel with the first circuit leg. The second circuit leg includes a first transistor coupled to form a current mirror with the first reference current circuit and a second transistor coupled to form a current mirror with the second reference current circuit.

Abstract: A circuit for reading and programming a fuse. The electronic circuit includes a data fuse coupled to a data node and a reference fuse coupled to a reference node. A programming circuit is coupled to the data node, wherein the programming circuit is configured to, when activated, cause the data fuse to be programmed. A sensing circuit is configured to draw current from the data node and the reference node in order to develop a voltage differential between the data node and the reference node during a read operation. A read circuit is configured to, when activated, enable the sensing circuit to develop the voltage differential during the read operation. A protection circuit is configured to form a voltage divider within the sensing circuit during programming of the fuse.