Optical systems have many unique attributes that make them useful for range detection and communications, but often the optical signal needs to be converted to an electrical signal as part of the ...

A conventional 1-MΩ transimpedance amplifier has at least 130 of output-noise density at room temperature (Figure 1). You can consider the 130 nV as the theoretical noise floor limit of the amplifier ...

Circuit simulations are great because you can experiment with circuits and make changes with almost no effort. In Circuit VR, we look at circuits using a simulator to do experiments without having to ...

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 ...

In order to help his friend prepare for a talk at DEFCON this weekend, [Craig] built an IR photodiode amplifier circuit. The circuit extended the detection range of the hack from a few inches to a few ...

The EL7900 light-to-current optical sensor integrates a photodiode and a current amplifier within a compact, 5-lead, lead-free ODFN package. Operating in a wide range of lighting conditions from 1 lux ...