Application specific integrated circuit for thermopile sensor and ASIC chip

A thermopile sensor and ASIC chip technology, applied in the field of MEMS sensors, can solve the problems of not really realizing MEMS devices and few integrated circuit chip designs, and achieve the effect of reducing pin wiring and improving the integration level
CN111521272APending Publication Date: 2020-08-11NANJING UNIV OF INFORMATION SCI & TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING UNIV OF INFORMATION SCI & TECH
Publication Date
2020-08-11

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Abstract

The invention discloses an application specific integrated circuit for a thermopile sensor and an ASIC chip. The circuit comprises a multi-channel analog switch, a programmable gain amplifier, an analog-to-digital converter, a digital filter, a random access memory, an erasable programmable read-only memory, a state machine and a power management module which are connected in sequence, and the multi-channel analog switch switches multi-channel analog signals between a thermopile sensor and a reference resistor; the programmable gain amplifier conditions and amplifies the analog signal; the digital filter filters high-frequency signal noise; the random access memory stores and exchanges the filtered real-time measurement data; the power management module controls the whole integrated circuit to be in a low-power-consumption state. The multi-channel thermopile sensor signal input circuit supports multi-channel thermopile sensor signal input, and has the functions of analog signal amplification, filtering, parameter storage and self-calibration. The ASIC chip provided by the invention is made into a millimeter level, so that pin wiring is greatly reduced, and the integration level ofthe thermopile sensor is improved.
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Description

technical field

[0001] The invention belongs to MEMS sensor (Micro-Electro-Mechanical System) technology, and specifically relates to an application-specific integrated circuit and an ASIC chip for a thermopile sensor. Background technique

[0002] At present, the global sensor market is showing a trend of rapid growth, and Micro-Electro-Mechanical Systems (Micro-Electro-Mechanical Systems) are manufactured using semiconductor materials and microelectronic processing technologies. Micro-electro-mechanical systems are favored because of their optical, mechanical, and electrical integration, small size, light weight, and low power consumption. Among them, the infrared thermopile temperature sensor is a new type of sensor, which is widely used in environmental monitoring, security systems, smart home, medical and process control and other scenarios due to its non-contact temperature measurement, and realizes automatic detection of temperature with control.

[0003] MEMS senso...

Claims

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