TSL220是美国德克萨斯公司最新生产的用来把光的强度值直接转换成频率信号的新颖器件,具有电路结构简单,成本低,功耗小和电路接口方便等特点,尤其适合于做光强度计或光传感器用。本文首先分析其工作原理和参数设计,最后举例说明它的应用。 TSL220 is a new Texas Instruments company to produce the new value for the direct conversion of light intensity into a frequency signal of novel devices, with the circuit structure is simple, low cost, low power consumption and circuit interface features such as convenience, especially for light Intensity meter or light sensor. This paper first analyzes its working principle and parameter design, and finally illustrates its application.