Radio-frequency module and communication device

A radio-frequency module, comprising:

• a first power amplifier;
• a first bias circuit connected to the first power amplifier;
• and
• a second bias circuit connected to the first power amplifier,
• wherein the first bias circuit includes
• a first register configured to receive a first digital control signal corresponding to a power mode of the first power amplifier, and
• a first current generation circuit configured to generate, based on information in the first register, a first bias current, and
• the second bias circuit includes
• a second register configured to receive a second digital control signal corresponding to the power mode, the second digital control signal being different from the first digital control signal, and
• a second current generation circuit configured to generate, based on information in the second register, a second bias current,
• wherein
• the radio-frequency module further includes a control circuit configured to supply the first digital control signal to the first register and supply the second digital control signal to the second register,
• a first control signal path is connected between the control circuit and the first register, and a second control signal path, which is different from the first control path, is connected between the control circuit and the second register, and
• the control circuit is further configured to:
• output the second digital control signal to the second register at first timing at which the power mode is switched to cause the second bias current to be outputted from the second bias circuit, and
• output the first digital control signal to the first register at second timing after elapse of a predetermined time from the first timing to cause the first bias current to be outputted from the first bias circuit.