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This integrated receiver channel designed for a pulsed time-of-flight (TOF) laser rangefinder consists of a fully differential transimpedance amplifier channel and a timing discriminator. The amplitude-dependent timing walk error is compensated by measuring the width and rise time of the received pulse echo and using this information for calibration. The measured bandwidth, transimpedance and minimum detectable signal (SNR ~10) of the receiver channel are 230 MHz, 100 kQ and ~1 &#x03BC;A respectively. The single-shot precision of the receiver is ~3 cm at an SNR of 13 and the measurement accuracy is &#x00B1;4 mm with compensation within a dynamic range of ~1:1. The receiver circuit was realized in a 0.35 &#x03BC;m CMOS process and has a power consumption of 150 mW. The functionality of the receiver channel was verified over a temperature range of -20 &#x00B0;C to +50 &#x00B0;C.

A Wide Dynamic Range CMOS Laser Radar Receiver With a Time-Domain Walk Error Compensation Scheme