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nRF51822 - transceiver's current consumption in standby mode

Johnson CHEN

Hello Nordic experts, I can find current consumption in standby mode data from nRF24L01plus datasheet. But it seems standby mode current consumption is not mentioned in nRF51822 datasheet. Btw, I think RXRU(or TXRU) state of nRF51822 equal to standby I mode of nRF24L01plus. And RXIDLE(or TXIDLE) state of nRF51822 equal to standby II mode of nRF24L01plus. Would you please help me to check it? Thanks a lot for your support.

Best regards, Johnson CHEN

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    Hi Johnson,

    The radio is somewhat different compared to the nRF24L-series, as the shockburst and Enhanched shockburst is now removed from hardware and implemented in firmware instead.

    Given this change, there is no standby-1 and 2 anymore. when the radio is enabled, but no active (no TX or RX), it will not consume anything. The RXRU and TXRU is the ramp-up current right before the radio goes into either TX or RX mode, meaning its the current consumed in the 130 us before the PLL is stabilized. These currents are specified in the nRF51822 PS v1.2, chapter 8.5.2 (7 and 8.7 mA)

    Best regards Håkon

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