Provided is a potential measurement device including: a first substrate having read electrodes arranged in a two-dimensional array; and a second substrate on which the first substrate is stacked, in which each of the read electrodes includes at least one or more AD conversion circuits each having independent correspondence to the read electrode, and at least a part of the AD conversion circuits is arranged in a two-dimensional array on the second substrate.

An AD converter is provided with a control unit including a calibration control unit that controls an operation for calibrating the control unit and a conversion control unit that controls an operation for converting a target input voltage into a digital signal; a reference voltage unit that outputs a reference voltage; and an integrating converter unit including an integrating unit that generates an integrated voltage by integrating a predetermined unit voltage, a comparator that has two inputs and compares the integrated voltage and an input voltage or a reference voltage Vref, and a crossbar switch that switches connections between the case where the integrated voltage is inputted to one of the inputs of the comparator and the input voltage or the reference voltage Vref is inputted to the other input and the case where the input voltage or the reference voltage Vref is inputted to one of the inputs of the comparator and the integrated voltage is inputted to the other input.

Methods and systems for emulating high side current of a power switch including low and high side switches. The method includes generating, with a low side current sensor, a low side current signal for the low side switch when the power switch is in a low state. The method also includes generating, with a first transconductance amplifier, an emulated current signal based on an input voltage of the power switch. The method further includes generating, with a buffer, a fixed reference voltage by sampling the low side current signal when the power switch changes from the low state to a high state. The method also includes generating, with a capacitor, an emulated voltage based on the emulated current signal and the fixed reference voltage. The method further includes, generating, with a second transconductance amplifier, a high side current signal for the high side switch based on the emulated voltage.

Methods and systems for emulating high side current of a power switch including low and high side switches. The method includes generating, with a low side current sensor, a low side current signal for the low side switch when the power switch is in a low state. The method also includes generating, with a first transconductance amplifier, an emulated current signal based on an input voltage of the power switch. The method further includes generating, with a buffer, a fixed reference voltage by sampling the low side current signal when the power switch changes from the low state to a high state. The method also includes generating, with a capacitor, an emulated voltage based on the emulated current signal and the fixed reference voltage. The method further includes, generating, with a second transconductance amplifier, a high side current signal for the high side switch based on the emulated voltage.

A leakage current sensor and a leakage current monitoring device; the leakage current center comprising an input end, an output end and an ASIC chip; the ASIC chip is electrically connected with the input end for reading analog quantity signals of the input end; the ASIC chip is further electrically connected to a digital signal processing module; the digital signal processing module can output digital quantity signals to the output end; the digital signal processing module can simultaneously feedback the output digital quantity signals to the ASIC chip, thereby forming a closed-loop feedback circuit; the input end of the leakage current sensor comprises a current sampling unit; a reference unit is arranged between the current sampling unit and the ASIC chip.

Disclosed in the present invention are a chip port state detection circuit, a chip, and a communication terminal. The chip port state detection circuit, by means of a port detection conversion circuit, converts the state of a port to be detected into a corresponding voltage and respectively outputs same to a first comparator and a second comparator, which, after comparing same with a corresponding input reference voltage, output a logic signal to a chip ID determination circuit to obtain a chip ID corresponding to the state of the chip port to be detected, in order to distinguish multiple identical chips.

Disclosed in the present invention are a chip port state detection circuit, a chip, and a communication terminal. The chip port state detection circuit, by means of a port detection conversion circuit, converts the state of a port to be detected into a corresponding voltage and respectively outputs same to a first comparator and a second comparator, which, after comparing same with a corresponding input reference voltage, output a logic signal to a chip ID determination circuit to obtain a chip ID corresponding to the state of the chip port to be detected, in order to distinguish multiple identical chips.

An apparatus including a first comparator device. The first comparator device includes a first reference current providing device for providing a first reference current and a first comparison current providing device for providing a first comparison current. The first comparator device is configured to compare the first reference current with the first comparison current to obtain a first comparison result and output a first output signal characterizing the first comparison result based on the first comparison result.

An apparatus including a first comparator device. The first comparator device includes a first reference current providing device for providing a first reference current and a first comparison current providing device for providing a first comparison current. The first comparator device is configured to compare the first reference current with the first comparison current to obtain a first comparison result and output a first output signal characterizing the first comparison result based on the first comparison result.

An electronic device having an overcurrent protection function is provided. The electronic device includes at least one power converter, the at least one power converter including a power conversion unit to convert input voltage or input current to supply output current, a control unit to adjust the output current, and an overcurrent protection unit to detect the output current and transmit a detection result to the control unit, and wherein the overcurrent protection unit includes an overcurrent extraction module to output a difference between the output current exceeding designated first reference current and the first reference current; a calculation module to calculate an accumulative value obtained by integrating the difference with respect to time, and a first comparison module to compare the accumulative value with a designated critical value and to transmit a first detection result in which the accumulative value exceeds the critical value to the control unit.