Resources Contact Us Home
Automatic gain control device

Image Number 4 for United States Patent #6903611.

An automatic gain control device without being influenced by leakage current of a capacitor. The automatic gain control device includes a first control loop, a second control loop, and a multiplexer. The first control loop receives an input voltage and generates a first control voltage. The second control loop receives the first control voltage, digitizes the first control voltage, and outputs a second control voltage by a DAC. The multiplexer chooses the first control voltage or the second control voltage as a gain control voltage according to a hold signal. Because the second control loop digitizes and holds the first control voltage and output the second control voltage from the DAC, the gain control voltage can be held constant for a long time without being influenced by leakage current.

  Recently Added Patents
Feature management of a communication device
Device for producing a connection grid with an integrated fuse
Adaptive switch mode LED system
Electrode composition with enhanced performance characteristics
Phone messaging using audio streams
Data storage apparatus, memory control apparatus and method for controlling flash memories
  Randomly Featured Patents
Ablation instrument having a flexible distal portion
Method and apparatus for making printed elastic bands
Engine control system
Cribbage board
Photographic camera with multi-purpose exposure-parameter adjuster
Method and circuit configuration for converting a frequency signal to a DC voltage
Semiconductor storage device
Metal coated optical fiber array module
Nitride based compound semiconductor light emitting device and method for producing the same
Sigma-delta modulator having a feed-forward path and a hybrid portion