Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Optical communication device










Image Number 12 for United States Patent #8445832.

An optical communication device which can be operated at high speed is provided. For example, the optical communication device includes: a pre-amplifier circuit PREAMP1 amplifying a current signal Iin from a photodiode PD, and converting an amplified signal into a voltage signal; and an operating-point controller circuit VTCTL1 controlling an operation of the PREAMP1. The PREAMP1 includes a negative feedback path formed by a feedback resistance Rf1, and includes: a level-shift circuit LS1 level-shifting in accordance with an operating-point control signal Vcon; and an amplifier circuit AMP1 connected to a subsequent stage of the LS1 and performing an amplifying operation with a high gain. The VTCTL1 includes a replica circuit configured by the same circuit and circuit parameter as those of the AMP1 and electrically connected between the input and the output, and generates the Vcon so that an output DC level of this replica circuit is matched with an input DC level of the AMP1.








 
 
  Recently Added Patents
Sample analysis and/or sample processing system
Method and system for modeling a common-language speech recognition, by a computer, under the influence of a plurality of dialects
Systems and methods for universal enhanced log-in, identity document verification and dedicated survey participation
Optical imaging device and imaging method for microscopy
Sensor packages and method of packaging dies of differing sizes
Method and device for processing broadcast packets/multicast control messages
Light emitting device and light emitting device package
  Randomly Featured Patents
Reconfigurable optical add/drop multiplexer
Optical interconnect structures incorporating sets of diffractive elements
Ball louver with liner assembly
DNA sequences encoding phytases of ruminal microorganisms
Light emitting element driving apparatus, method of driving a light emitting element and computer readable recording medium
Lithography exposure mask derived from nanocrystal precursors and a method of manufacturing the same
Liquid telechelic polymers having high 1,4-diene structure
Inter-vertebral disc prosthesis with variable rotational stop and methods of use
Transparent electrically conductive film and method for production thereof
Method for making cargo vessel sidewall having a seamless interior liner