Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Semiconductor integrated circuit using standardized analog cells










Image Number 7 for United States Patent #5801407.

An analog-circuit block, which is fabricated on a chip of a semiconductor integrated circuit, is configured by a plurality of analog cells each having a desired function such as the function of an operational amplifier. The analog cells are standardized with respect to the height thereof. Two power-source wires are provided respectively in an upper-end section and a lower-end section of the analog-circuit block, so that they are commonly used by the analog cells. In the analog cell, input/output wires are placed in a direction perpendicular to the power-source wires. For example, two input wires are provided to input signals for two inputs of an operational amplifier while one output wire is provided to provide an output signal, wherein one of the two input wires is partially connected to the output wire. Further, it is possible to provide a dummy wire which is placed in parallel with the output wire, wherein a midpoint of the output wire is connected to a midpoint of the dummy wire. Because of the provision of the dummy wire, it is possible to suppress interference between circuits. Moreover, the analog cell is surrounded by a guard-ring diffusion layer; and there are provided guard-ring wires to contact with the guard-ring diffusion layer, so that propagation of noise is avoided.








 
 
  Recently Added Patents
Dynamic bar oriented user interface
Anti-slip strip for vehicle running boards
Preserving privacy of digital communication information
Storage device, data processing device, registration method, and recording medium
Use of natural query events to improve online advertising campaigns
Engineered nucleic acids encoding a modified erythropoietin and their expression
Nickel-cobalt-manganese multi-element lithium ion battery cathode material with dopants and its methods of preparation
  Randomly Featured Patents
Side element of a shoe upper
Holder with flexible clip
Old man water ball bottle
Concrete float
Exercise bicycle
Adaptive communication data retrieval system
Process for the purification of alkylene carbonate
Method and apparatus for connective tissue treatment
Semiconductor device having an n-channel MOS transistor, a p-channel MOS transistor and a contracting film
Envelope restoration scheme for linear high-efficiency power amplification