Apparatus and method for an integrated photodiode in an infrared receiver
US6356375B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 10, 1998 |
| Grant date | Mar 12, 2002 |
| Priority date | — |
| Expiry date | Mar 10, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/3084
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and apparatus are shown for integrating a photodiode and a receiver circuit on a single substrate. An input signal is received with the photodiode. The receiver circuit is configured to suppress feedback from an output terminal of the receiver circuit to the photodiode by amplifying the input signal to produce an amplified input signal, controlling the gain of the input signal amplification responsive to the magnitude of the amplified input signal, comparing the amplified input signal to a detection threshold voltage to produce a digital data signal, and holding the gain at a substantially constant level in response to a fast signal transition in the digital output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.