Integrated photodetector with moving destination circuit
US5382786A · kind A · utility
3Cited by
4References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 6, 1993 |
| Grant date | Jan 17, 1995 |
| Priority date | — |
| Expiry date | Apr 6, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/3084
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A photodetector circuit provides a highly accurate digital signal output in response to incoming optical pulses from an LED having an inherent optical output fall time. The LED is optically coupled to a photodiode which produces an input current in response to the optical output. The input current is amplified by an amplifier having two stages to produce an output voltage signal for switching an output transistor. An RC circuit is coupled between the first and second stage amplifiers for introducing a transient into the output voltage signal for reducing propagation delay and increasing the noise margin of the circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.