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Measuring device, level shifter circuit, charge pump stage and charge pump and method thereof

A technology of level converter and charge pump, applied in the direction of measurement device, measurement of electrical variables, measurement of current/voltage, etc., can solve the problems of time control inaccuracy, improve chip waste heat, inaccuracy, etc., achieve less noise, The effect of large signal-to-noise ratio and reduced power consumption

Active Publication Date: 2021-02-09
INFINEON TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in order to generate the electrical DC voltage on the chip itself (also referred to as on-chip generation), it is conventionally necessary to tolerate very low efficiencies, which increase the waste heat of the chip and thus increase the eliminates the need for active chip cooling
In addition, inaccuracies in the timing control, for example in controlling the switches to chop the DC voltage of the electricity, must be tolerated, and the increased power consumption due to the required timing control must be tolerated

Method used

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  • Measuring device, level shifter circuit, charge pump stage and charge pump and method thereof
  • Measuring device, level shifter circuit, charge pump stage and charge pump and method thereof
  • Measuring device, level shifter circuit, charge pump stage and charge pump and method thereof

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Embodiment Construction

[0203]According to various embodiments, a readout circuit is provided for a micromechanical capacitive sensor, for example for a silicon microphone, for example for a capacitor microphone from microsystems technology (also called micromechanical capacitor microphone or micromechanical capacitive microphone). The readout circuit may be based on a bridge circuit, for example a full bridge circuit or a half bridge circuit. Furthermore, the readout circuit can have an amplifier, for example a differential amplifier (also referred to as a subtractor or “fully differential amplifier”) which has cross-wired switches at the two output terminals. Alternatively or additionally, the readout circuit can have an electrical DC voltage supply for supplying a bridge circuit (for example a capacitive bridge circuit).

[0204] The readout circuit may have a chopper (or use a chopper method) for reducing low frequency noise components such that a larger SNR is achieved, e.g. in the audio band (i...

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Abstract

In various embodiments, a level shifter circuit is provided. The level shifter circuit may include a signal source and a level shifter. The signal source, on the output side, is capacitively coupled to an input of the level shifter. The signal source and the level shifter are galvanically isolated from one another.

Description

technical field [0001] The invention relates to a circuit architecture for a measuring device, a level shifter circuit, a charge pump stage (Ladungspumpstufe) and a charge pump as well as a method for operating the circuit architecture. Background technique [0002] In general, for processing digital or analog signals, integrated circuits (also called chips or microchips) can be used. An integrated circuit may have multiple circuit blocks, each of which provides one or more functions of the integrated circuit. The more circuit blocks an integrated circuit or chip has, the more complex the integrated circuit or chip and its circuit blocks may be. For example, complex chips may require voltage supply devices, voltage rectification devices (Spannungsgleichrichtung), level shifters, DC voltage converters, clock generators, power amplifiers, sense amplifiers (Ausleseverstärkung), etc. The circuit module is provided. [0003] In general, the aim is for a signal-processing chip ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K5/02H03K5/003
CPCH03K5/003H03K5/02H02M3/07H03K19/018521G01R19/16585
Inventor U.赖希奥尔德M.赖因霍尔德
Owner INFINEON TECH AG