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发明授权
CN1838021B 用于生成跟踪光源的温度系数的输出信号的装置和方法 有权 转让

用于生成跟踪光源的温度系数的输出信号的装置和方法
摘要：
本发明提供了用于生成跟踪光源的温度系数的输出信号的装置和方法。提供了光源温度系数跟踪机制(例如电流源电路)，其生成跟踪光源的温度系数(例如发光二极管(LED)的温度系数)的输出信号。绝对温度比例电流源电路(PTAT电流源电路)生成第一信号。绝对温度相补电流源电路(CTAT电流源电路)生成第二信号。基于第一信号和第二信号来生成跟踪光源的温度系数的输出信号。
摘要（英）：

An apparatus and method for generating an output signal that tracks the temperature coefficient of a light source are provided. A light source temperature coefficient tracking mechanism (e.g., a current source circuit) that generates an output signal, which tracks the temperature coefficient of the light source (e.g., temperature coefficient of a light emitting diode (LED)) is provided. A proportional to absolute temperature current source circuit (PTAT current source circuit) generates a first signal. A complimentary to absolute temperature current source circuit (CTAT current source circuit) generates a second signal. The output signal that tracks the temperature coefficient of the light source is based on the first signal and the second signal.

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