A sensor device is provided including: an electric wire; a semiconductor device including an inductor and an amplifier, the inductor being configured to detect a magnetic field generated around the electric wire, the amplifier including a bipolar element configured to amplify a voltage generated at the inductor; and a substrate on which the first semiconductor device and the electric wire are arranged such that the first semiconductor device is apart from the electric wire by at least a given distance. In a plan view of the substrate, the electric wire does not overlap the first semiconductor device.

The present disclosure relates to a device comprising two error amplifier stages having their first inputs interconnected, their second inputs interconnected and their outputs coupled to an output of the device, each stage comprising an operational amplifier; a circuit for calibrating the amplifier; a switch coupling an input of the amplifier to the first input; a switch coupling another input of the amplifier to the second input; a switch coupling an output of the amplifier to the stage output; a switch having on state which short-circuits the inputs of the amplifier; and a switch coupling the output of the amplifier to the calibration circuit.

Disclosed herein is a method including sinking current from a pair of input transistors of a differential amplifier while sourcing more current to the pair of input transistors than is sunk. The method further includes generating a pair of input differential signals using a pair of input voltage regulators, and amplifying a difference between the pair of input differential signals to produce a pair of differential output voltages, using the differential amplifier. The method also includes amplifying the pair of differential output voltages using at least one voltage gain amplifier, and generating control signals for current sources that source the current to the pair of input transistors of the differential amplifier, from the pair of differential output voltages after at least amplification.

An integrated circuit (IC) includes first, second, third, and fourth transistors, first and second current source devices, and a trim circuit. The first transistor has a first control input and a first current terminal. The second transistor has a second control input and a second current terminal. The third transistor had a third control input and third and fourth current terminals. The fourth transistor has a fourth control input and fifth and sixth current terminals. The first current source is coupled between a first power supply node and the third current terminal. The second current source is coupled between the first supply node and the fifth current terminal. The trim circuit is coupled between the fourth current terminal and a second power supply node, and is coupled between the sixth current terminal and the second power supply node. The trim circuit includes a resistive digital-to-analog converter (RDAC) circuit.

Disclosed herein is an operational amplifier including a non-inverting input terminal, an inverting input terminal, a P-type metal oxide semiconductor input differential pair, a first input tail current source, an N-type metal oxide semiconductor input differential pair, a second input tail current source, an output stage, a first correction circuit, and a second correction circuit. The first correction circuit and the second correction circuit operate over an operation region of the P-type metal oxide semiconductor input differential pair, an operation region of the N-type metal oxide semiconductor input differential pair, and a transition region in which both the P-type metal oxide semiconductor input differential pair and the N-type metal oxide semiconductor input differential pair operate.

A first correction voltage generation circuit provides a first positive or negative correction voltage for correcting an input voltage. A second correction voltage generation circuit provides a second correction voltage identical in polarity to the first correction voltage in accordance with the first correction voltage. The second correction voltage is generated to have a temperature coefficient reverse in polarity to a temperature coefficient of the first correction voltage.

Various embodiments of the present technology may comprise methods and apparatus for driver calibration. The methods and apparatus may comprise various circuits and/or systems to minimize an offset output current (e.g., a drive current) due to an offset voltage in an operational amplifier. The methods and apparatus may comprise a current comparator circuit and a replica circuit that operate in conjunction with each other to monitor the drive current and provide a feedback signal, which is then used to adjust the drive current and improve the accuracy of the drive current.

The disclosure provides a Sense Amplifier (SA), a memory and a method for controlling the SA, and relates to the technical field of semiconductor memories. The SA includes: an amplifier module; an offset voltage storage unit electrically connected to the amplifier module and configured to store an offset voltage of the amplifier module in an offset elimination stage of the SA; and a load compensation unit electrically connected to the amplifier module and configured to compensate a difference between loads of the amplifier module in an amplification stage of the SA. The disclosure may improve an accuracy of reading data of the SA.

Chopper amplifiers with multiple sensing points for correcting input offset are disclosed herein. In certain embodiments, a chopper amplifier includes chopper amplifier circuitry including an input chopping circuit, an amplification circuit, and an output chopping circuit electrically connected in a cascade along a signal path. The chopper amplifier further incudes a multi-point sensed offset correction circuit that generates an input offset compensation signal based on sensing a signal level of the signal path at multiple signal points. Furthermore, the multi-point sensed offset correction circuit injects the input offset compensation signal into the signal path to thereby compensate for input offset voltage of the amplification circuit while suppressing output chopping ripple from arising.

Chopper amplifiers with multiple sensing points for correcting input offset are disclosed herein. In certain embodiments, a chopper amplifier includes chopper amplifier circuitry including an input chopping circuit, an amplification circuit, and an output chopping circuit electrically connected in a cascade along a signal path. The chopper amplifier further incudes a multi-point sensed offset correction circuit that generates an input offset compensation signal based on sensing a signal level of the signal path at multiple signal points. Furthermore, the multi-point sensed offset correction circuit injects the input offset compensation signal into the signal path to thereby compensate for input offset voltage of the amplification circuit while suppressing output chopping ripple from arising.