參數(shù)資料
型號： E4707B-EDGE4707B
英文描述： Quad Channel Per-Pin Precision Measurement Unit
中文描述： 四通道按針腳精密測量單元
文件頁數(shù)： 3/25頁
文件大?。?/td> 194K
代理商： E4707B-EDGE4707B
11
Revision 3 / December 18, 2002
www .semtech.com
TEST AND MEASUREMENT PRODUCTS
Edge4707B
Circuit Description (continued)
Short Circuit Protection
The Edge 4707B is designed to survive a direct short circuit
to any legal voltage at the FORCE and SENSE pins, by
virtue of a limited current, which results from the presence
of an external current sense resistor (normally 1 K
to
1M
) in the FORCE path.
Transient Clamps
The Edge 4707B has on-board clamps to limit the voltage
and current spikes that might result from either changing
the current range or changing the operating mode.
Power Supply Sequencing
In order to avoid the possibility of latch-up, the following
power-up requirements must be satisified:
1. VEE
≤ GND ≤ VDD ≤ VCC at all times
2. VEE
≤ All inputs ≤ VCC
The following power supply sequencing can be used as a
guideline when operating the Edge4707:
Power Up Sequence
1. VCC (substrate)
2. VEE/VDD
3. Digital Inputs
4. Analog Inputs
Power Down Sequence
1. Analog Inputs
2. Digital Inputs
3. VEE/VDD
4. VCC (substrate)
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