Two-way broadband remote control receiving chip and application circuit thereof

Abstract

The invention discloses a two-way broadband remote control receiving chip and an application circuit thereof. The chip comprises an amplification module, a digital filtering module, a broadband decoding module, a function code error adjusting module, a motor driving module, an output relay module, an oscillation module and a direct-current voltage LDO module. Due to the fact that the digital filtering module is integrated inside the chip, the antijamming capability of the chip is improved. In addition, the stability of the chip is high. For the reason that the broadband decoding module is integrated, the requirement for frequency tolerance of the chip is low, production debugging is made simple and convenient, the production efficiency and stability of products are improved, and the percent of pass of the products is increased. Due to the integration of the function code error adjusting module, under the condition that the correctness of the signal format is guaranteed, the receiving distance of the products is prolonged. Moreover, because the motor driving module is integrated, the number of devices of a peripheral circuit is decreased, the cost is reduced and the production debugging difficulty is lowered. Meanwhile, through the integration of the LDO module, power ripples of a supply chip and a radio-frequency circuit are reduced.

Description

technical field [0001] The invention relates to the technical field of chip design, in particular to a two-way broadband remote control receiving chip and an application circuit thereof. Background technique [0002] With the development of electronic industry technology, wireless remote control products are more and more widely used in people's daily life. The existing wireless remote control signal processing forms are also various, and the application fields are very wide. Among them, the relatively large applications are in the fields of remote control toys and home appliance remote control. [0003] The existing two-function wireless remote control decoding ASIC for toys is susceptible to interference from the external environment when processing remote control signals, which brings a lot of trouble to production debugging and affects the production efficiency, pass rate and stability of the product; The drive circuit has high hardware costs, many peripheral devices, a...

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Problems solved by technology

[0003] The existing two-function wireless remote control decoding ASIC for toys is susceptible to interference from the external environment when processing remote control signals, which brings a lot of trouble to production debugging and affects the production efficiency, pass rate and stability of the product; The drive circuit has high hardware costs, many peripheral devices, and difficult production debugging; in addition, the power supply to the chip and the radio frequency circuit has large ripples, which affects the remote control distance, and it is easy to burn the chip when the forward and backward functions are frequently switched.

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