Method and system for transimpedance amplifiers with high current input while maintaining high transimpedance gain and bandwidth

A current shunting configuration, comprising:

• an input signal;
• a shunt circuit for receiving said input signal;
• a first amplifier having a first input coupled to a first end of said shunt circuit, wherein said shunt circuit adaptively shunts excessive current from saturating said amplifier;
• a second amplifier having a first input coupled to a first output of said first amplifier;
• and
• a resistive divider coupled to a second end of said shunt circuit;
• said second amplifier comprising a first output and a second output.

A current shunting configuration, comprising:

• an input signal;
• a shunt circuit DC-coupled to said input signal;
• a first amplifier having a first input coupled to a first end of said shunt circuit, wherein said shunt circuit adaptively shunts excessive DC input current from saturating said amplifier;
• and
• a second amplifier having a first output connected to a second end of said shunt circuit.

A current shunting configuration, comprising:

• an input signal;
• a shunt circuit DC-coupled to said input signal;
• a first amplifier having a first input coupled to a first end of said shunt circuit, wherein said shunt circuit adaptively shunts excessive input current from saturating said amplifier;
• and
• a second amplifier having a first output coupled to a second end of said shunt circuit;
• and
• a third amplifier having a first input coupled to a first output of said first amplifier;
• said third amplifier comprising a first and a second output.

A diode shunting configuration, comprising:

• an input signal;
• a circuitry for receiving said input signal;
• a first amplifier having a first input coupled to a first end of said circuitry, wherein said circuitry adaptively shunts excessive current from saturating said amplifier;
• a second amplifier coupled to a first output of said first amplifier;
• a third amplifier coupled to a first and a second output of said second amplifier;
• and
• a fourth amplifier comprising a buffer, coupled to a first output of said third amplifier, and having a first output coupled to a second input of said second amplifier.

A current shunting configuration, comprising:

• an input signal;
• a shunt circuit DC-coupled to said input signal;
• a first amplifier having a first input coupled to a first end of said shunt circuit;
• a second amplifier having a first output coupled to a second end of said shunt circuit;
• a third amplifier having a first input coupled to a first output of said first amplifier and having first and second outputs;
• and
• a fourth amplifier having a first input and a second input coupled to said first and second outputs of said third amplifier, respectively, said fourth amplifier having an output which is coupled to a second input of said third amplifier and to a first input of said second amplifier;
• wherein said shunt circuit adaptively shunts excessive DC input current from saturating said amplifier.

A current shunting configuration, comprising:

• an input signal;
• a shunt circuit DC-coupled to said input signal;
• a first amplifier having a first input coupled to a first end of said shunt circuit;
• a second amplifier having a first output coupled to a second end of said shunt circuit;
• a third amplifier having a first input coupled to a first output of said first amplifier and having first and second outputs;
• and
• a fourth amplifier having a first input and a second input coupled to said first and second-outputs of said third amplifier, respectively, said fourth amplifier having an output which is coupled to a second input of said third amplifier;
• a first input of said second amplifier coupled to said first output of said first amplifier;
• wherein said shunt circuit adaptively shunts excessive DC input current from saturating said amplifier.