Abstract: In one aspect, a system includes electrical components arranged in a daisy chain that include a first electrical component disposed at a first end of the daisy chain and a second electrical component disposed at an opposite end of the daisy chain than the first end. Each of the first and second electrical components includes an input port, an output port and a common port. The input port of the first electrical component is coupled to one of a supply voltage port or ground and the common ports of the first and second electrical components are coupled to the other one of the supply voltage or the ground. An address of the second electrical component is determined before addresses of the other of the electrical components are determined, and the addresses determine a position of an electrical component with respect to the other of the electrical components.

Abstract: An integrated circuit includes circuitry to sense the occurrence of a break in a ground connection and/or supply connection and to indicate same to an exterior environment. In at least one implementation, the break may be indicated by providing a signal on an output terminal of the device that is not associated with a normal output of the device.

Abstract: A magnetic field sensor includes a reference-field-sensing circuit channel that allows a calibration or a self-test of the circuitry of the magnetic field sensor. The magnetic field sensor can generate a reference magnetic field to which the magnetic field sensor is responsive.

Abstract: A magnetic field sensor has internal power supply generating circuits to generate a higher operating voltage for a magnetic field sensing element, resulting in a magnetic field sensor with improved sensitivity to magnetic fields.

Abstract: A magnetic field sensor includes a Hall element configured to generate a Hall element output signal in response to a magnetic field, the Hall element output signal comprising a magnetic field signal component and an offset signal component. The magnetic field sensor also includes a Hall element modulation circuit coupled to receive the Hall element output signal and configured to generate a modulation circuit output signal. The Hall element modulation circuit is modulated with a modulation signal having a changing modulation frequency that changes between a minimum frequency and a maximum frequency.

Abstract: A magnetic field sensor includes a diagnostic circuit that allows a self-test of most of or all of, the circuitry of the magnetic field sensor, including a self-test of a magnetic field sensing element used within the magnetic field sensor. The magnetic field sensor can generate a diagnostic magnetic field to which the magnetic field sensor is responsive.

Abstract: An integrated circuit includes circuitry to sense the occurrence of a break in a ground connection and/or supply connection and to indicate same to an exterior environment. In at least one implementation, the break may be indicated by providing a signal on an output terminal of the device that is not associated with a normal output of the device.

Abstract: A magnetic field sensor includes a reference-field-sensing circuit channel that allows a calibration or a self-test of the circuitry of the magnetic field sensor. The magnetic field sensor can generate a reference magnetic field to which the magnetic field sensor is responsive.

Abstract: In one aspect, a system includes electrical components arranged in a daisy chain that include a first electrical component disposed at a first end of the daisy chain and a second electrical component disposed at an opposite end of the daisy chain than the first end. Each of the first and second electrical components includes an input port, an output port and a common port. The input port of the first electrical component is coupled to one of a supply voltage port or ground and the common ports of the first and second electrical components are coupled to the other one of the supply voltage or the ground. An address of the second electrical component is determined before addresses of the other of the electrical components are determined, and the addresses determine a position of an electrical component with respect to the other of the electrical components.

Abstract: In one aspect, a system includes electrical components arranged in a daisy chain that include a first electrical component disposed at a first end of the daisy chain and a second electrical component disposed at an opposite end of the daisy chain than the first end. Each of the first and second electrical components includes an input port, an output port and a common port. The input port of the first electrical component is coupled to one of a supply voltage port or ground and the common ports of the first and second electrical components are coupled to the other one of the supply voltage or the ground. An address of the second electrical component is determined before addresses of the other of the electrical components are determined, and the addresses of the electrical components determine a position of an electrical component with respect to the other of the electrical components in the daisy chain.

Abstract: A magnetic field sensor includes a Hall element configured to generate a Hall element output signal in response to a magnetic field, the Hall element output signal comprising a magnetic field signal component and an offset signal component. The magnetic field sensor also includes a Hall element modulation circuit coupled to receive the Hall element output signal and configured to generate a modulation circuit output signal. The Hall element modulation circuit is modulated with a modulation signal having a changing modulation frequency that changes between a minimum frequency and a maximum frequency.

Abstract: Magnetic field sensors have a magnetic field sensing element and also a feedback circuit to provide a gain-adjustment signal to affect a sensitivity associated with the magnetic field sensing element. In some arrangements, the feedback circuit can include piezoresistors to sense a strain of a substrate over which the magnetic field sensor is disposed. With these arrangements, the feedback circuit can generate the gain-adjustment signal in accordance with the sensed strain. In other arrangements, the feedback circuit can generate pulsed magnetic fields proximate to the magnetic field sensing element in order to directly measure the sensitivity of the magnetic field sensing element. With these arrangements, the feedback circuit can generate the gain-adjustment signal in accordance with the sensed sensitivity.

Abstract: Magnetic field sensors have a magnetic field sensing element and also a feedback circuit to provide a gain-adjustment signal to affect a sensitivity associated with the magnetic field sensing element. In some arrangements, the feedback circuit can include piezoresistors to sense a strain of a substrate over which the magnetic field sensor is disposed. With these arrangements, the feedback circuit can generate the gain-adjustment signal in accordance with the sensed strain. In other arrangements, the feedback circuit can generate pulsed magnetic fields proximate to the magnetic field sensing element in order to directly measure the sensitivity of the magnetic field sensing element. With these arrangements, the feedback circuit can generate the gain-adjustment signal in accordance with the sensed sensitivity.

Abstract: Magnetic field sensors have a magnetic field sensing element and also a feedback circuit to provide a gain-adjustment signal to affect a sensitivity associated with the magnetic field sensing element. In some arrangements, the feedback circuit can include piezoresistors to sense a strain of a substrate over which the magnetic field sensor is disposed. With these arrangements, the feedback circuit can generate the gain-adjustment signal in accordance with the sensed strain. In other arrangements, the feedback circuit can generate pulsed magnetic fields proximate to the magnetic field sensing element in order to directly measure the sensitivity of the magnetic field sensing element. With these arrangements, the feedback circuit can generate the gain-adjustment signal in accordance with the sensed sensitivity.

Abstract: A magnetic field sensor includes a diagnostic circuit that allows a self-test of most of or all of, the circuitry of the magnetic field sensor, including a self-test of a magnetic field sensing element used within the magnetic field sensor. The magnetic field sensor can generate a diagnostic magnetic field to which the magnetic field sensor is responsive.

Abstract: In one aspect, a system includes electrical components arranged in a daisy chain that include a first electrical component disposed at a first end of the daisy chain and a second electrical component disposed at an opposite end of the daisy chain than the first end. Each of the first and second electrical components includes an input port, an output port and a common port. The input port of the first electrical component is coupled to one of a supply voltage port or ground and the common ports of the first and second electrical components are coupled to the other one of the supply voltage or the ground. An address of the second electrical component is determined before addresses of the other of the electrical components are determined, and the addresses of the electrical components determine a position of an electrical component with respect to the other of the electrical components in the daisy chain.

Abstract: A non-volatile one time programmable memory cell couples in series a two terminal fuse and a three terminal antifuse. The non-volatile one time programmable memory cell includes a memory cell write enable node and a memory cell output node. The non-volatile one time programmable memory cell includes fuse having a first node and a second node, and an antifuse having a trigger node, a first node, and a second node. The trigger node is coupled to the memory cell write enable node. The first node of the antifuse and the second node of the fuse are coupled to the memory cell output node. First and second voltages appearing at the memory cell output node are indicative of first and second binary states of the memory cell. A plurality of such memory cells can be included in a non-volatile programmable memory array. A non-volatile programmable memory cell capable of re-programming is also included.

Abstract: A non-volatile one time programmable memory cell couples in series a two terminal fuse and a three terminal antifuse. The non-volatile one time programmable memory cell includes a memory cell write enable node and a memory cell output node. The non-volatile one time programmable memory cell includes fuse having a first node and a second node, and an antifuse having a trigger node, a first node, and a second node. The trigger node is coupled to the memory cell write enable node. The first node of the antifuse and the second node of the fuse are coupled to the memory cell output node. First and second voltages appearing at the memory cell output node are indicative of first and second binary states of the memory cell. A plurality of such memory cells can be included in a non-volatile programmable memory array. A non-volatile programmable memory cell capable of re-programming is also described.

Abstract: A chopper-stabilized amplifier has switching networks arranged to support a high frequency clocking signal and to provide a high common mode rejection and a high rejection of an offset component of an input signal. A magnetic field sensor includes a Hall effect element coupled to a modulation circuit. The modulation circuit provides a signal to the chopper-stabilized amplifier. The chopper-stabilized amplifier provides an output signal to a low pass filter, which provides an output signal from the magnetic field sensor.

Abstract: A chopper-stabilized amplifier has switching networks arranged to support a high frequency clocking signal and to provide a high common mode rejection and a high rejection of an offset component of an input signal. A magnetic field sensor includes a Hall effect element coupled to a modulation circuit. The modulation circuit provides a signal to the chopper-stabilized amplifier. The chopper-stabilized amplifier provides an output signal to a low pass filter, which provides an output signal from the magnetic field sensor.