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參數(shù)資料

型號(hào)：	AN10E40
廠商：	Electronic Theatre Controls, Inc.
英文描述：	Field Programmable Analog Array
中文描述：	現(xiàn)場(chǎng)可編程模擬陣列
文件頁數(shù)：	33/36頁
文件大?。?/td>	293K
代理商：	AN10E40

AN10E40 Data Manual

Discharge to the Device

An ESD event can occur when any charged conductor (including the human body) discharges to an ESDS

(electrostatic discharge sensitive) device. The most common cause of electrostatic damage is the direct transfer of

electrostatic charge from the human body or a charged material to the electrostatic discharge sensitive (ESDS)

device. When one walks across a floor, an electrostatic charge accumulates on the body. Simple contact of a finger

to the leads of an ESDS device or assembly allows the body to discharge, possibly causing device damage. The

model used to simulate this event is the Human Body Model (HBM).

A similar discharge can occur from a charged conductive object, such as a metallic tool or fixture. The model used

to characterize this event is known as the Machine Model.

Discharge from the Device

The transfer of charge from an ESDS device is also an ESD event. The trend towards automated assembly would

seem to solve the problems of HBM ESD events. However, it has been shown that components may be more

sensitive to damage when assembled by automated equipment. A device may become charged, for example, from

sliding down the feeder. If it then contacts the insertion head or another conductive surface, a rapid discharge

occurs from the device to the metal object. This event is known as the Charged Device Model (CDM) event, and

can be more destructive than the HBM for some devices. Although the duration of the discharge is very short--often

less than one nanosecond--the peak current can reach several tens of amperes.

Field Induced Discharges

Another event that can directly or indirectly damage devices is termed Field Induction. As noted earlier, whenever

any object becomes electrostatically charged, there is an electrostatic field associated with that charge. If an ESDS

device is placed in that electrostatic field, a charge may be induced on the device. If the device is then momentarily

grounded while within the electrostatic field, a transfer of charge from the device occurs.

AN10E40 ESD Classifications

Pin Type

Digital Inputs

Classifications

Class 2

Class M4

Class C6

Class 2

Class M4

Class C6

Class 2

Class M4

Class C6

Class 2

Class M4

Class C6

Class 2

Class M4

Class C6

Notes

M4 and C6 classifications are based

on estimated performance based on