Resources Contact Us Home
Transimpedance amplifier with selective DC compensation

Image Number 12 for United States Patent #6784750.

A transimpedance amplifier selectively activates DC compensation to optimize a signal-to-noise ratio for an optical receiver. The optical receiver includes a photodiode that converts a light signal to an electrical current signal, and the transimpedance amplifier converts the electrical current signal to a pair of differential voltage signals for further processing. The electrical current signal is provided to the transimpedance amplifier by connecting a cathode of the photodiode to a first input amplifier via a DC blocking capacitor and by directly connecting an anode of the photodiode to a second input amplifier. The transimpedance amplifier includes a DC correction circuit that generates a correction current when an output of the first input amplifier exceeds a predefined threshold. The correction current is added to an input of the second input amplifier to adjust a DC offset at an output of the second input amplifier.

  Recently Added Patents
Atomic oscillator and manufacturing method
Method for configuring analog-to-digital converter keys and non-transitory machine readable medium storing program code executed for performing such method
Solution based precursors
Collaborative data redundancy for configuration tracking systems
Centralized behavioral information system
Feedback method and processing system for policy installation failures
  Randomly Featured Patents
Apparatus which makes it possible or not possible to start using film at position of an unused frame
Method of making a multilayer inductor
Media cache control interface
Aster plant named `BKATRWT`
Electro-optic reflective element assembly
Duck head connector
Method and system for versioned sharing, consolidating and reporting information
Multilayer ceramic electronic component
Polyester/polyamide resin compositions containing grafted polyolefin and molded products thereof
Shoe outsole