Baseband signal processing chip
A baseband signal processing and chip technology, which is applied to emergency protection circuit devices, electrical components, and circuit devices for limiting overcurrent/overvoltage, etc. problem, to achieve the effect of simple structure, low cost, and ESD protection function
Active Publication Date: 2015-04-22
北京华电知企能源技术服务有限公司
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Problems solved by technology
[0004] However, both of the above methods have certain defects: due to product appearance and structural limitations, the method of adding a rubber stopper to the structure cannot be practically applied to every product
In addition, considering the relatively high cost of TVS, the method of using TVS to protect signal lines is not suitable for large-scale application in low-end mobile phone products
[0005] Therefore, need to provide a kind of baseband signal processing chip, to solve the defect that the structure requirement of product is higher or cost is higher when carrying out the ESD protection of mobile phone in the prior art
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[0018] See figure 1 The structure 100 of the baseband signal processing chip in the embodiment of the present invention includes: a basic input and output interface 101, an electrostatic protection resistor 102, and a processing unit 103.
[0019] Among them, the basic input and output interface 101 includes an output interface and an input interface, and is an important channel for data transmission between the processing chip and other devices, and is most vulnerable to the impact of ESD (Electro-Static Discharge, electrostatic discharge).
[0020] Such as figure 1 It can be seen that the electrostatic protection resistor 102 is connected in series between the input / output interface 101 and the processing unit 103, that is, one end of the electrostatic protection resistor 102 is connected to the basic input / output interface 101, and the other end is connected to the processing unit 103.
[0021] The electrostatic protection resistor 102 can reduce the impact of the ESD energy transm...
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The invention discloses a baseband signal processing chip, which is provided with a basic input and output interface and a processing unit connected with the basic input and output interface. The baseband signal processing chip also comprises an electrostatic protection resistor, wherein one end of the electrostatic protection resistor is connected with the basic input and output interface and the other end of the electrostatic protection resistor is connected with the processing unit. Due to adoption of the mode, the baseband signal processing chip is provided with the electrostatic protection resistor, one end of the electrostatic protection resistor is connected with the basic input and output interface, and the other end of the electrostatic protection resistor is connected with the processing unit, thus the electrostatic protection resistor can be used for attenuating energy released from electrostatic and realizes the protection on the processing unit. Therefore the baseband signal processing chip can realize an electrostatic protection function with a simple structure and lower cost.
Description
Technical field [0001] The invention relates to the field of electrostatic protection, and in particular to a baseband signal processing chip for electrostatic protection. Background technique [0002] Currently, mobile phones have been widely used in areas such as life and work. The safety of mobile phones has also been paid more and more attention. For example, the protection of ESD (Electro-Static Discharge) of mobile phones has been paid more and more attention. When high-level ESD strikes, the internal circuits or chips of mobile phones are often damaged. [0003] The prior art mainly adds a rubber plug protection interface to the basic input / output interface of the baseband signal processing chip, so that the processing unit in the baseband signal processing chip is protected from direct ESD impact. Or a TVS tube (Transient Voltage Suppresser) is connected in parallel in the circuit of the basic input and output interface to protect the processing unit in the baseband signal...
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IPC IPC(8): H02H9/04
Inventor 王亚辉
Owner 北京华电知企能源技术服务有限公司