Linear transimpedance amplifier dual regulator architecture and tuning

A device comprising:

• a transimpedance amplifier disposed on a chip, the transimpedance amplifier having a front-end section and a back-end section;
• an on-chip linear regulator, on the chip, arranged to power the front-end section;
• and
• a process and temperature monitor circuit configured to independently monitor an output of the on-chip linear regulator and an off-chip switching regulator that powers the back-end section.

A method comprising:

• receiving power at a front-end section of a transimpedance amplifier, disposed on a chip, from an on-chip linear regulator disposed on the chip;
• receiving power at a back-end section of the transimpedance amplifier, from an off-chip switching regulator;
• monitoring an output voltage of the on-chip linear regulator and an output voltage of the off-chip switching regulator;
• and
• causing the output voltage of the off-chip switching regulator to be identical to the output voltage of the on-chip linear regulator.