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
Low powered activation arrangement and method thereof
Lubricant composition and antioxident composition
Transmitter having a programmable amplifier operating class
Image stabilization
Preventative traffic congestion social networking improvement system within a community
Pharmaceutical combination of pazopanib and topotecan to treat neuroblastoma, osteosarcoma, and rhabdomyosarcoma in a human
  Randomly Featured Patents
Vibration dampening compositions and methods thereof
Ion source and mass spectrometric apparatus
Method and machine for grinding rotationally symmetrical workpieces
Method and apparatus for processing markup language information
Electric power control apparatus, power generation system and power grid system
System and method for aiding commercial property assessment
Hood hinge and body structure
Fungicidal active ingredients combinations
Method of controlling the lifting of bottom sections in lying furniture such as a bed
Amplifier arrangement for acoustic signals, provided with means for suppressing (undersired) spurious signals