EDN

Signal Chain Basics #158: Overcoming design challenges of photodiode front ends for LIDAR applications

Although advances in photonics and electronics are making it easier and cheaper to implement a light detection and ranging (LIDAR) system, the analog front-end receiver interface still presents many ...
Electronic Design

Comparing Photodiodes: GaN PIN Avalanche vs. PIN

What is a PIN avalanche photodiode (APD)? What is a PIN photodiode? How to characterize avalanche breakdown in GaN. Major differences exist between a PIN photodiode and an avalanche photodiode (APD), ...
EDN

How to build a universal photodetector that just works every time

Building a photodetector that works across a range of applications does not have to be complicated. In this post, we will break down a universal design concept that is flexible, practical, and ready ...
Electronic Design

Matched JFETs Improve Photodiode Amplifier

1. This circuit uses a JFET to bootstrap the cathode of the photodiode. It eliminates the effect of diode resistance and capacitance. This improves bandwidth and reduces noise, but puts a dc voltage ...