Resources Contact Us Home
Photodiode digitizer with fast gain switching

Image Number 4 for United States Patent #7365665.

An optical receiver and method of operating therfor. A photodiode converts a received optical signal to an electrical signal, which is provided to both high gain and low gain signal paths. First analog-to-digital converter ADC) circuitry is coupled to convert a high gain output signal into a first plurality of digital signals, while second ADC circuitry converts a low gain output signal into a second plurality of digital signals. A control unit is configured to monitor the amplitude of at least one of the low gain and high gain output signals. If the amplitude of the monitored signal falls below a predetermined threshold, the control unit is configured to select data provided by the first ADC circuitry. Otherwise, data provided by the second ADC circuitry is selected.

  Recently Added Patents
Press nut
Method of estimating remaining constant current/constant voltage charging time
Decentralized processing network
Using storage cells to perform computation
Aggregating completion messages in a sideband interface
DC/DC converter, power supply circuit, and semiconductor device
Method and apparatus for soft information transfer between constituent processor circuits in a soft-value processing apparatus
  Randomly Featured Patents
System and method for provisioning virtual circuits in broadband access multiplexing elements
Marine riser assembly
Exposure method, exposure apparatus, and method for producing device
Apparatus for detecting foreign matters in liquids
Non-planar interface construction
Handle for vessel
Method and apparatus for testing a conductivity sensing circuit
Tube aligning assembly for tube printer
Hydrolyzed silane emulsions and their use as surface coatings