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https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1303281/ina740b-i2c-pull-up-resistor-range
大家好、
Hideki 您好、
该器件在接受3mA 灌电流时的最大(最坏情况)逻辑电平为0.4V。 因此、选择一个将产生小于此值的下拉电流以实现裕度的上拉电阻器。
通常、 EVM 上3.3V 电源的4.7kΩ 上拉已显示在 I2C 高速模式下运行。
