LiDAR is a method that uses lasers reflected out to a target and back to gauge distance. The signal can then be used in applications such as autonomous driving, mapping, surveillance, industrial sensing, and more to build an image of the environment. In this application, a number of components are required to build out the system. The first one is a photodetector, usually an avalanche photodiode that is followed by a TIA (Trans-Impedance Amplifier), which converts the diode current into a voltage. This is typically followed by a limiting amplifier which acts like a level translator or comparator for the ADC. Finally, there is a digital block which can be an FPGA or microprocessor that processes the signal. Key specifications for the TIA are a wide bandwidth to resolve small pulses and enough gain to be able to detect low level signals. Finally, newer designs for LiDAR are requiring high maximum currents to support cases where the laser is close to an object. In those cases, the sensor gets flooded by the return signal and outputs a high current. Layout is also important in these designs since high performance systems require a precision layout to ensure performance. ESD protection is often not included on TIAs, as the leakage current and capacitance from the ESD protection diodes creates an error source and limits the precision of the system.