Abstract: Various implementations include circuits, devices and/or methods that provide closed-loop feedback crowbar current limiting for logic level-shifting between circuits with different voltage supplies. Some implementations include a level-shift circuit assembly including an input buffer and a current limiter. The input buffer is configured to receive an incoming logic signal that is set relative to a first electrical level, and in response, provide a level-shifted logic signal that is set relative to a second electrical level and is logically consistent with the incoming logic signal. The current limiter is configured to suppress the generation of current associated with the input buffer by providing a bias modification condition to the input buffer, in order to adjust the operation of the input buffer, in response to sensing a voltage difference between the first electrical level and the second electrical level.

Abstract: Various implementations include circuits, devices and/or methods that provide closed-loop feedback crowbar current limiting for logic level-shifting between circuits with different voltage supplies. Some implementations include a level-shift circuit assembly including an input buffer and a current limiter. The input buffer is configured to receive an incoming logic signal that is set relative to a first electrical level, and in response, provide a level-shifted logic signal that is set relative to a second electrical level and is logically consistent with the incoming logic signal. The current limiter is configured to suppress the generation of current associated with the input buffer by providing a bias modification condition to the input buffer, in order to adjust the operation of the input buffer, in response to sensing a voltage difference between the first electrical level and the second electrical level.

Abstract: According to an exemplary embodiment, an output driver circuit includes a pre-conditioning circuit. The output driver circuit further includes a timing control circuit coupled to an output of the pre-conditioning circuit, where the timing control circuit has a first state and a second state. The output driver circuit further includes a first transistor having a first terminal coupled to the timing control circuit and a second transistor having a first terminal coupled to the timing control circuit. When the timing control circuit is in the first state the pre-conditioning circuit output is coupled to the first terminal of the first transistor and not coupled to the first terminal of the second transistor, and when the timing control circuit is in the second state the pre-conditioning circuit output is coupled to the first terminal of the second transistor and not coupled to the first terminal of the second transistor.

Abstract: The present invention is directed to a method of determining an orientation of an object wherein a directional antenna of a global positioning system receiver acquires a position of a global positioning system transmitter. An orientation of the directional antenna of the global positioning system receiver is determined with respect to the global positioning system transmitter, the determined orientation of the direction antenna corresponding to the object so as to enable the orientation of the object to be determined.

Abstract: A switchable biasing device for an analog CMOS differential amplifier provides a supply bias current and a corresponding input bias voltage to achieve reliable performance with various power supply voltages. The bias device may include a control element having states corresponding to power supply voltages. The control element controls a supply bias circuit for supplying bias current to a differential amplifier at a level corresponding to the power supply voltage represented by a control signal from the control element. The bias current is made lower for a low power supply voltage to ensure that current source stage elements of the differential amplifier operate within their saturation region, and higher for a high power supply voltage to ensure sufficient current to maintain slew rates. The control element further controls an input bias circuit for providing a dc bias voltage at inputs of the differential amplifier at levels corresponding to the power supply voltage represented by the control signal.