摘要:
A circuit (600) provides Electrostatic Discharge (ESD) protection for internal elements in an integrated circuit during an ESD event. The circuit (600) includes cascoded NMOSFETs (614, 616), with the upper NMOSFET (614) connected to voltage divider circuitry (628). The voltage divider circuitry (628) provides a first bias voltage to the gate of the upper NMOSFET (614) during an ESD event and a second bias voltage during normal operation. Preferably, the first bias voltage is approximately ½ of the drain voltage of the upper NMOSFET (614). Under these bias conditions the cascoded NMOSFETs exhibit a maximum voltage threshold for initiation of parasitic lateral bipolar conduction.
摘要:
An SOI structure (20) includes a semiconductor layer (15) formed on an insulating substrate (12). The semiconductor layer (15) is partitioned into an ESD protection portion (32) and a circuitry portion (34). A portion of the semiconductor layer (15) in the ESD protection portion (32) and a different portion of the semiconductor layer (15) in the circuitry portion (34) are differentially thinned. A device (60) which implements the desired circuit functions of the SOI structure (20) is fabricated in the circuitry portion (34). An ESD protection device (40) is fabricated in the ESD protection portion (32). The thick semiconductor layer (15) in the ESD protection portion (32) serves to distribute the ESD current and heat over a large area, thereby improving the ability of the SOI structure (20) to withstand an ESD event.
摘要:
There is disclosed a low calorie fat substitute comprising an emulsion containing a non-flowable aqueous phase, an oil phase and a fat extender. Also disclosed are low calorie fat substitutes wherein the fat or oil is replaced by a fat mimetic.
摘要:
A moisture alarm comprises a watertight system with three probes extending down as supportive legs and as ballast from a floatable body or case containing audible and/or RF pulsing-alarm circuitry responsive to moisture detected by any or all of the probes; the case is upwardly convex on top to slip from beneath fixed obstacles in rising water; a provision prevents the probe from shorting out when the unit is set on a metal deck; the free ends of the probes, each of which has a set of outer and inner coaxial electrodes, are apertured, providing access for moisture to reach the inner electrode; a mercury switch sounds the alarm when the unit is tipped over in position lifting inner electrodes from the floor but can be over-ridden by a shunt which permits the unit to be operated inverted as a randdrop alarm; a dual ring conductor embodiment is also disclosed.
摘要:
An integrated circuit including an ESD network including a portion located in ESD subareas of a plurality of I/O cells where the ESD subareas are arranged in a row traversing the plurality of I/O cells. The ESD network includes ESD clamp cells and ESD trigger circuit cells wherein a portion of the network is located in the row. In some examples, the row includes an ESD trigger circuit cell with a portion in one subarea of one ESD subarea of one I/O cell and a second portion in a second ESD subarea of another I/O cell. Also described herein is a method for producing an integrated circuit layout with an ESD network.
摘要:
Embodiments of the present disclosure provide an integrated circuit (IC) or semiconductor device. This semiconductor device includes a number of I/O pads or bumps on an outer surface of the semiconductor device, a number of electrostatic discharge (ESD) protection cells and functional modules. Individual ESD protection cells couple to and are downstream of individual I/O pads. Functional modules coupled to and are downstream of individual ESD protection cells. The ESD protection cells protect circuitry within the functional module from electrostatic discharge events. A rail clamp may provide an ESD discharge path between a first power supply bus and a second power supply bus. The ESD protection cells may be collected in groups to form clusters (with linear or irregular placement patterns). These clusters may be distributed autarchically across the semiconductor device overlapping one or more functional modules or within spaces or gaps between the functional modules.
摘要:
An aerodynamic lift enhancing gate valve assembly comprising an airfoil blade disposed at a leading edge of a sail, forming a gate between the trailing edge of the airfoil blade and the leading edge of the sail. The airfoil blade captures wind and redirects it over the cambered surface of the sail to enhance the aerodynamic lift of the sail. The pressure of the wind captured by the airfoil blade is regulated by springs or elastic bands. In operation, the chord of the airfoil blade remains substantially parallel to the chord of the sail.
摘要:
An integrated circuit includes a high speed circuit, an interconnect pad, a passivation layer under the interconnect pad, a first patterned metal layer, and a first via. The high speed circuit is for a high speed signal at a terminal of the high speed circuit. The interconnect pad is on a top surface of the integrated circuit structure. The first patterned metal layer is under the passivation layer having a first portion and a second portion. The first portion of the first patterned metal layer is connected to the terminal of the high speed circuit. The second portion of the first patterned metal layer is under the interconnect pad and is electrically floating when the high frequency signal is present on the interconnect pad portion. The result is reduced capacitive loading on the high speed signal which improves performance.
摘要:
An ESD protection system for I/O cells of an integrated circuit. The I/O cells of a bank of cells include a first type of I/O cells having ESD trigger circuits and a second type of I/O cells having ESD clamp devices. In one embodiment, the ESD trigger circuits of the first type are located at the same area of an active circuitry floor plan as the area in the floor plan for the ESD clamp devices of the I/O cells of the second type.