A receiver channel with a leading edge timing discriminator for a pulsed time-of-flight laser radar

An integrated receiver channel with a wide dynamic range for a pulsed time-of-flight (TOF) laser rangefinder has been designed and tested. The circuit uses leading edge timing discrimination. The bandwidth of the receiver channel is 250 MHz and the maximum transimpedance 40 kΩ. The single-shot distance measurement accuracy is 65 mm, taking into account walk error (input signal amplitude varies in the range from 1 to 4000) and jitter (+/-3σ).