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发明授权
CN107239092B 用于校准的温度无关参考电流生成 有权

用于校准的温度无关参考电流生成
摘要：
本文公开了可以在校准期间使用的用于生成温度无关参考电流的技术。可以基于通过片上校准电阻器的电流来生成温度无关参考电流。这减轻了对片外校准电阻器的需要，所述片外校准电阻器可能是昂贵的并且造成较慢的校准。片上校准电阻器的一个端子处的电压可以被调制为基本上消除片上校准电阻器的温度系数。这可以导致经过片上校准电阻器的电流与温度无关。温度无关参考电流可以基于参考电压和目标校准电阻。
摘要（英）：

This article discloses a technique for generating a temperature independent reference current that can be used during calibration. The temperature independent reference current can be generated based on the current through the on-chip calibration resistor. This reduces the need for off-chip calibration resistors, which may be costly and cause slower calibration. The voltage at one terminal of the on-chip calibration resistor can be modulated to substantially eliminate the temperature coefficient of the on-chip calibration resistor. This can cause the current through the on-chip calibration resistor to be independent of the temperature. The temperature independent reference current can be based on the reference voltage and the target calibration resistor.

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