Resources Contact Us Home
Amplifier having output range that exceeds supply voltage

Image Number 4 for United States Patent #6011440.

Amplifier circuitry is provided having an output voltage range that exceeds its supply rail voltage. Such an amplifier may be useful in battery powered applications calling for driving a high impedance load with a low current, moderate bandwidth signal The amplifier circuitry includes a transconductance amplifier, for providing a high output impedance, and a charge pump DC/DC converter, for providing a high supply voltage to the transconductance amplifier. In one embodiment of the invention, the gain of the amplifier is a function of the input voltage so as to linearize a transfer function between the amplifier input and a response of a load at the amplifier's output.

  Recently Added Patents
Air driven alternators for battery powered vehicles
Externally gapped line arrester
Method and apparatus for encoding and decoding video based on first sub-pixel unit and second sub-pixel unit
Packaging sleeve
Agents for preventing and treating disorders involving modulation of the ryanodine receptors
Memory component and memory device
Rotating sunlight/light beam for fractional/beneficial use
  Randomly Featured Patents
Fitter glove
Debug registers for halting processor cores after reset or power off
Return payment card process
Ball screw integrated type linear movement guiding unit
Structure of complementary bipolar transistors
Sorbent for heavy metals
Fluid pressure reduction device
Process for preparing azetidinone thiazolidine derivatives
Method for bypassing a power cell of a power supply
Power station