| 2. | The temperature sensing circuit adopts current - output mode taking pnp substrate transistor as temperature sensing device . according to the theory of the bgr , ptat and ctat can be generated from the circuit , and the former one is regarded as the initial signal which correlating to the temperature 温度传感电路以衬底pnp型bjt作为感温元件,采用电流输出模式,按照带隙基准原理获得与绝对温度成正比( ptat )电流以及与绝对温度成反比( ctat )电流,并以前者作为与温度相关的原始电信号。 |