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
Data architecture and user interface for plasma processing related software applications
Isolated Australian coral reef fluorescent proteins and cell-based kinase or phosphatase platforms for cancer drug development
Image forming apparatus and warming up method thereof
Method for restricting the use of an application program, system for authenticating the user of a measuring apparatus, authentication server, client apparatus and storage medium
Memory device program window adjustment
Stereoscopic display
Digital broadcasting transmission and reception system, and a signal processing method using turbo processing and turbo decoding
  Randomly Featured Patents
Method and apparatus for multicast transmission of packet data in a mobile communication system
Mold for forming a frozen food product and holder
Thin-film magnetic head for perpendicular (vertical) recording
Process for beneficiation of non-sulfide ores
Removal or organics and volatile metals from soils using thermal desorption
Robot device and control method of robot device
Open-end wrench
Press section with an equalizing nip in a paper machine
Method for calibrating a phase distortion compensated polar modulated radio frequency transmitter
Method and system of variable run length image encoding using sub-palette