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CC2640 7x7和CC2640 4x4运行相同的 simpleBLEPeripheral例程功耗不一样

Other Parts Discussed in Thread: CC2640

CC2640 7x7和CC2640 4x4运行相同的 simpleBLEPeripheral例程广播电流峰值不一样,我RF_N 和RF_P参考differential operation 的INT_BIAS ;修改4x4片子的RF_FE_MODE_AND_BIAS宏改成

RF_FE_DIFFERENTIAL | RF_FE_INT_BIAS

发现广播峰值电流12mA,7X7的芯片则在7个毫安左右;

即使把4X4改回默认的

#define RF_FE_MODE_AND_BIAS ( RF_FE_SINGLE_ENDED_RFP | \
RF_FE_EXT_BIAS ) 广播电流峰值也有9.5mA左右;

请问TI的工程师,这个4X4的广播电流峰值要比7x7的高,是芯片本身的问题还是在协议栈里面可以修改?

  • JChong,

    这里有个问题。

    4x4的EVM板,硬件上用的是external bias 和 single ended output。

    所以你改成differential + internal bias 会有问题。

    再改回来,我就不能确定啥出问题了,芯片应该是没问题的,周边电路。。。。。。母鸡呀