Auto-zero receiver with integrated dfe, vga and eye monitor

An apparatus comprising:

• a first half-cell comprising a first input stage, a first auto-zero stage, a second auto-zero stage and a first feedback buffer, wherein said first input stage is configured to present a first differential input to said first auto-zero stage and said second auto-zero stage;
• a second half-cell comprising a second input stage, a third auto-zero stage, a fourth auto-zero stage and a second feedback buffer, wherein said second input stage is configured to present a second differential input to said third auto-zero stage and said fourth auto-zero stage;
• a multiplexer configured to (a) receive a first output from said first auto-zero stage, (b) receive a second output from said third auto-zero stage and (c) present a decision feedback input comprising one of said first output and said second output;
• and
• a decision feedback equalizer configured to (i) generate a feedback signal in response to said decision feedback input and (ii) present said feedback signal to said first feedback buffer and said second feedback buffer, wherein (a) said first output is generated in response to said first differential input and said feedback signal and (b) said second output is generated in response to said second differential input and said feedback signal.