Resources Contact Us Home
Highly linear high-speed transconductance amplifier for Gm-C filters

Image Number 2 for United States Patent #6566949.

A transconductance amplifier and method for improving the phase response and linearity. A differential amplifier circuit receives differential signals for amplification on respective bases of input bipolar transistors. The transistors amplify a small signal received on the based connections to produce an amplified output current. The differential amplifier circuit is connected to load impedances which form a cascode transconductance amplifier output stage. Feedback transistors provide a feedback voltage from the emitters of each of the different bipolar transistors to the base, improving the linearity of the differential amplifier. Phase compensation is provided by cross coupling through first and second capacitors a portion of each individual differential signal component to the base connections of the differential amplifier input transistor.

  Recently Added Patents
Methods of synthesizing heteromultimeric polypeptides in yeast using a haploid mating strategy
Heat stable variants of plant adenosine diphosphate glucose pyrophosphorylase small subunit
Lighting control device and lighting control method
Gate timing for short servo wedge in disk memory systems
System for determining movement properties of a guided vehicle
(-)-epigallocatechin gallate derivatives for inhibiting proteasome
Event handling in an integrated execution environment
  Randomly Featured Patents
Power management for integrated circuits such as programmable logic devices
Well casing perforated zone washing apparatus
Vending apparatus and system for automated dispensing of disks
Logic design development tool and method
Creating 3D images of objects by illuminating with infrared patterns
Binder compositions comprising low molecular weight poly(orthomethylolated) phenolic compound and novolac resin
Sealing device for a flanged bearing
Manufacturing apparatus
LCD having particular spacing between spacers
Method of determining the rotational speed of a machine, and device for performing the method