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
Moving structure and micro-mirror device using the same
Vacuum cleaner
Multi-room user interface
Droplet generation and detection device, and droplet control device
Waterproof wound protector
Changing sound alerts during a messaging session
Light emitted diode
  Randomly Featured Patents
Slit lamp table
Forced air control valve for exhaust system of internal combustion engine
Animal cage
Electrostatic zipper actuator optical beam switching system and method of operation
Portable manual sharpener for knives and the like
Hydril-type connector
Training system for music performance, keyboard musical instrument equipped therewith and training keyboard
Metrology for monitoring a rapid thermal annealing process
Ring architecture for quad port bypass circuits