摘要:
In an EEPROM array the cells are pre-charged or pre-erased so that they will respond uniformly to the same read voltage level. By clearly defining the threshold voltage for the cells in their erased states and in their programmed states, it is possible to define more than one read voltage and thus provide cells that an store multiple values and even analog values.
摘要:
The snapback characteristics of the parasitic NPN structure inside an NMOS device are used to write and store information in the device by periodically triggering the device from the high impedance state to the low impedance state using the self turn-on characteristics of the device under elevated voltage. To minimize power consumption, and thus overheating, in the “on” state, a pulsed mode operation is combined with dV/dt triggering powering the device at a constant Vdd pulse amplitude.
摘要:
In a method and structure for a high voltage LDMOS with reduced hot carrier degradation, the thick field oxide is eliminated and a reduced surface field achieved instead by including adjacent p+ and n+ regions in the drain well and shorting these regions to each other, or by including a p+ region in the drain well and biasing it to a positive voltage relative to the source voltage.
摘要:
In a multiple input ESD protection structure, the inputs are isolated from the substrate by highly doped regions of opposite polarity to the input regions. Dual polarity is achieved by providing a symmetrical structure with n+ and p+ regions forming each dual polarity input. The inputs are formed in a p-well which, in turn, is formed in a n-well. Each dual polarity input is isolated by a PBL under the p-well, and a NISO underneath the n-well. An isolation ring separates and surrounds the inputs. The isolation ring comprises a p+ ring or a p+ region, n+ region, and p+ region formed into adjacent rings.
摘要:
A photon detector capable of detecting gigahertz frequency optical signals utilizes a layer of photonic material that is formed below of the coil of an inductor. When a pulsed light source is applied to the layer of photonic material, the photonic material generates eddy currents that alter the magnetic flux of the inductor. The signals can then be detected by detecting the change in magnetic flux of the inductor.
摘要:
A color imager, which has a plurality of photodiodes, utilizes a layer of metal that is formed over the photodiodes. The metal layer has a plurality of different sized openings that lie vertically over the photodiodes to physically diffract, and thereby filter, the incident light that strikes the color imager.
摘要:
In a BSCR or BJT ESD clamp, the breakdown voltage and DC voltage tolerance are controlled by controlling the size of the collector of the BJT device by masking part of the collector.
摘要:
A lateral DMOS transistor formed on a silicon-on-insulator (SOI) structure has a higher breakdown voltage that results from a cavity that is formed in the bulk region of the SOI structure. The cavity exposes a portion of the bottom surface of the insulator layer of the SOI structure that lies directly vertically below the drift region of the DMOS transistor.
摘要:
In a method and structure for current balancing the emitter current in a multi-finger n-emitter of a BJT or BSCR, back-end or polysilicon resistors are applied between the emitter fingers and the power rail, with the resistors chosen to be larger the closer the emitter fingers are to the collector.