Dual-drive coupling for output amplifier stage

An output stage for an amplifier comprising:

• a PMOS output device coupled to a first voltage source,
• a NMOS output device coupled to said PMOS output device and to a second voltage source;
• a floating resistor network;
• a first signal source coupled to said NMOS output device;
• and
• a second signal source coupled to said PMOS output device,
• wherein,
• said floating resistor network is coupled between said first signal source and said second signal source, and further wherein
• said first signal source comprises a first NMOS device coupled to the second voltage source, and said second signal source comprises a second NMOS device coupled to tie second voltage source.

An output stage for an amplifier comprising:

• a PMOS output device coupled to a first voltage source,
• an NMOS output device coupled to said PMOS output device coupled to a second voltage source;
• a floating resistor network comprising first and second transistors;
• a first NMOS signal source coupled to said NMOS output device and to lie second voltage source;
• a second NMOS signal source coupled to said PMOS output device;
• and
• a replica device comprising a third transistor configured to replicate the first transistor and coupled between said second NMOS signal source and said PMOS output device,
• wherein,
• said floating resistor network is coupled between said first NMOS signal source and said NMOS second signal source.

An output stage for an amplifier comprising:

• a PMOS output device coupled to a first voltage source;
• an NMOS output device coupled to said PMOS output device and to a second voltage source,
• a floating resistor network;
• a first NMOS signal source coupled to said NMOS output device coupled to the second voltage source;
• a second NMOS signal source coupled to said PMOS output device coupled to the second voltage source,
• a current source;
• and
• a diode coupled to said current source, wherein
• said diode is coupled to both said first NMOS signal source and said second NMOS signal source, and further wherein,
• said floating resistor network is coupled between said first NMOS signal source and said second NMOS signal source .

A method of outputting a signal, said method comprising:

• providing an NMOS output device coupled to a first voltage source;
• providing a first NMOS signal source to drive said NMOS output device aid coupled to the first voltage source;
• providing a PMOS output device coupled to a second voltage source;
• providing a second NMOS signal source to drive said PMOS output device ad coupled to the first voltage source;
• coupling said NMOS output device to said PMOS output device at a junction;
• biasing said NMOS output device with a first current source;
• biasing said PMOS output device with a second current source;
• biasing both said PMOS output device and said NMOS output device with a floating resistor network;
• inputting a signal to be outpatted through said first NMOS signal source and said second NMOS signal source;
• and
• obtaining the output signal from said junction of said PMOS output device and said NMOS output and device.

An output device for an amplifier prepared by a process comprising:

• providing an NMOS output device;
• providing a first NMOS signal source to drive said NMOS output device;
• providing a PMOS output device;
• providing a second NMOS signal source to drive said PMOS output device;
• coupling said NMOS output device to said PMOS output device at a junction;
• providing a first current source to bias said NMOS output device;
• providing a second current source to bias said PMOS output device;
• providing a first signal source for input signals;
• providing a second signal source for input signals;
• providing a floating resistor network coupled between said first signal source and said second signal source;
• coupling said first signal source to said NMOS output device;
• and
• coupling said second signal source to said PMOS output device.