Can the on board LDO be accessed?
If so, how much current could it provide?
The thought is that it could be used to power another part of their system (low mA of current).
The ADuCRF101 integrates LDOs on the UHF transceiver die and on the Cortex die.
Low power and high power LDO share the same pin, LVDD.
The high power LDO could possibly be used to power a device, it can provide up to 50mA.
The low power LDO can only provide a few uA, and cannot be used to power external devices.
If an external device is connected to LVDD, it should be disconnected to enter mode 4 or 5.
For example in the case of ratio metric measurements, where LVDD is used to power a resistive sensor, the other side of the sensor could be connected to a GPIO, and before entering mode 5, the GPIO can be configured as open circuit, disconnecting the sensor.
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