Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Integrated Hall element and amplifier with controlled offset voltage










Image Number 4 for United States Patent #4709214.

An integrated circuit includes an epitaxial layer. In a near central region thereof is formed a symmetrical array of four equal sized Hall cells that are connected in parallel to form one Hall element. A moat surrounds the Hall element consisting of two concentric isolation walls separated by a band of opposite conductivity epitaxial material. The output of the Hall element is connected to the input of an adjacent differential amplifier that has two extraordinarily large amplifying transistors with emitter areas each equal to about a half of a Hall area, for achieving much better control over the relative dimensions of these emitters and thus over the amplifier offset voltage from chip to chip. The emitter resistors are likewise made very wide and both pairs of components are physically arranged to have balanced thermal coupling to the Hall element for further enhancing control of offset voltage.








 
 
  Recently Added Patents
Systems and methods for printing images outside a normal color gamut in image forming devices
Systems and methods for detailed error reporting in data storage systems
Developing cartridge
Method and apparatus for managing communication services for user endpoint devices
Enediyne compounds, conjugates thereof, and uses and methods therefor
Vehicle control apparatus
Method for producing a sulfonated polyarylether block copolymer
  Randomly Featured Patents
Method and device for detecting motor vehicle tilt
Method and system for estimating ionospheric delay using a single frequency or dual frequency GPS signal
Mechanical galvanizing coating resistant to chipping, flaking and, cracking
Monolithic integrated digital-to-analog converter
Loading dock management system employing daisy-chained communications modules
Contact lens package
Decorative brewer
Thin film laser emitting device and method for the manufacture thereof
Fiber optic probe
Flight control indicator displaying the aircraft's thrust information