Universal detection chip system for weak signals of sensor

A chip system, general detection technology, applied in the direction of using digital measurement technology for measurement, can solve the problems of reducing the reliability of the detection system, occupying a large silicon wafer area, and high cost, achieving miniaturization and portability, and improving integration. accuracy and reliability, and the effect that is conducive to high-precision measurement
CN103399201AActive Publication Date: 2013-11-20INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF MICROELECTRONICS CHINESE ACAD OF SCI
Publication Date
2013-11-20

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Abstract

The invention discloses a universal detection chip system for weak signals of a sensor. The chip system comprises a detection subsystem and an auxiliary subsystem which are both connected with the sensor, wherein the detection subsystem comprises two current detection channels and a voltage detection channel; the current detection channels realize detection to weak current signals input by the sensor through current and voltage conversion, voltage amplification and analog-digital conversion; the voltage detection channel first converts weak voltage signals input by the sensor into current signals and then outputs the current signals to the current detection channels, thereby indirectly realizing the detection of weak voltage signals; the auxiliary subsystem is used for providing required bias current, voltage, a clock and control signals for the sensor and the detection subsystem. The chip system has the characteristics of low noise, low power consumption, high precision, high integration level and the like, can be integrated on a substrate together with the sensor to form a lab-on-chip.
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Description

technical field

[0001] The invention relates to the technical field of sensor weak signal detection, and is a general-purpose chip system for sensor weak signals with a relatively large detection range, which can be used to detect weak current signals and weak voltage signals output by various types of sensors. Background technique

[0002] Miniature sensors are widely used in environmental monitoring, biomedical engineering, life science research, food manufacturing and processing and other fields. Most of the miniature sensors are ampere sensors or volt sensors, which directly convert chemical or physical quantities into weak current signals or voltage signals. The traditional weak signal detection methods of sensors usually use large instruments such as electrochemical analyzers and lock-in amplifiers. With the development of semiconductor manufacturing technology and the innovation of integrated circuit technology, the design and application of high-performance circuit ...

Claims

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