Slew rate enhancement circuit

A slew rate boosted amplifier, comprising;

• a transconductance amplifier stage having at least one input and at least one output;
• a second amplifier stage having an output and at least one input, wherein the at least one output of the transconductance stage is coupled to the at least one input of the second stage;
• and
• a capacitance path electrically coupled from the output of the second stage to the input of the second stage, wherein the capacitance path includes:
• a common node;
• a first capacitor coupled between the output of the second stage and the common node;
• and
• a second capacitor coupled between the common node and the input of the second stage;
• and
• a clamping circuit electrically coupled between the common node and an AC ground.

An amplifier having an input for receiving input signals, an output for outputting output signals and a feedback path from the input to the output, the feedback path comprising:

• a common node;
• a first capacitor coupled between the amplifier input and the common node;
• a second capacitor coupled between the common node and the amplifier output;
• and
• a clamping circuit for clamping a voltage at the common node in response to a voltage at the amplifier output, the impedance of the clamping circuit being high for small amplitude input signals and the impedance of the clamping circuit being small for large amplitude input signals.