Apparatus and methods for radio frequency amplifiers

A mobile device comprising:

• one or more antennas;
• a plurality of switches electrically connected to the one or more antennas;
• and
• a transceiver electrically connected to the plurality of switches and including a packaged integrated circuit configured to provide amplification to a radio frequency signal received from the plurality of switches, the packaged integrated circuit including a die attach paddle configured to receive a ground voltage, a die attached to the die attach paddle, and a bond wire connected between the die attach paddle and the die, the die including an amplifier that includes a first bipolar transistor, a second bipolar transistor, and a first bias circuit, the first bipolar transistor including an emitter electrically connected to a base of the second bipolar transistor and configured to receive the ground voltage via the first bias circuit and the bond wire.

A packaged integrated circuit comprising:

• a die attach paddle configured to receive a ground voltage;
• a die attached to the die attach paddle and including an amplifier that includes a first field effect transistor, a second field effect transistor, and a first bias circuit, the first field effect transistor including a source electrically connected to a gate of the second field effect transistor;
• and
• a bond wire connected between the die attach paddle and the die, the source of the first field effect transistor configured to receive the ground voltage via the first bias circuit and the bond wire.