Amplifier circuit for a ranging transceiver

A differential amplifier circuit comprising:

• a first driver stage comprising:
• a first inverter,
• a second inverter, and
• a resistive feedback;
• a second driver stage connected to the first driver stage, the second driver stage comprising:
• a first differential amplifier;
• an output stage connected to the second driver stage, the second driver stage comprising:
• a second differential amplifier;
• a first switch connected to the output stage;
• a second switch connected to the second driver stage;
• and
• a resistive divider connected to the first switch.

A transceiver comprising:

• a transmitter comprising an amplifier circuit, the amplifier circuit comprising:
• an input configured to receive an input signal;
• an amplifier connected to the input and configured to receive the input signal and generate a modulated input signal based on the input signal and one of a first amplification level and a second amplification level, wherein the amplifier comprises:
• a first transistor configured to receive the input signal, wherein the first transistor comprises a first gate, and
• a second transistor connected in cascode with the first transistor, wherein the second transistor comprises a second gate;
• and
• a switching component configured to switch the amplifier between the first amplification level and the second amplification level, wherein the switching component is switchably connected between (i) the second gate and (ii) a first port configured to receive a first reference voltage and a second port configured to receive a second reference voltage different than the first reference voltage;
• and
• an output connected to the amplifier and configured to output the modulated input signal.