[7] RF: Current leakage via MODE pin affecting RF performance

This anomaly applies to IC Rev. Revision 2, build codes QDAA-G00.

It was inherited from the previous IC revision Engineering C.

Symptoms

Current leakage via MODE pin. Both TX and RX gain, as well as LNA noise figure (NF), are affected.

Conditions

Using pin control with MODE pin pulled to VDD.

Consequences

Increased current leakage into MODE pin when pulled to VDD. TX and RX gain will be affected, as well as the device current consumption. Higher noise figure will impact the RX sensitivity.

Workaround

Use one of the following:
  1. 33 kΩ resistor in series on MODE pin.
  2. SPI control and keep MODE pin pulled to GND.
Parent topic: New and inherited anomalies