针对51单片机系统中常用的A/D转换器价格高、精度低的缺点，介绍TI公司的16 位的带有I2C串行接口的A/D转换器ADS1110的工作原理，给出ADS1110与AT89C51单片机系统的接口电路和软件设计。实践证明，ADS1110具有高性价比和实用性。 Abstract: According to the disadvantages of high expense and low accuracy of the general A/D converter used in MCS51 microchip system,the principle and working process of a high accuracy 16-bit A/D conversion ADS1110 which has I2C bus and belongs to TI Company are proposed here as well as the interface of ADS1110 to AT89C51 and software list.It is proved to be high performance index and practicability.
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