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PARAMETERMEASUREMENTINFORMATION
在
ISOLA
TION
屏障
输出
V
O
+
-
+
-
V
O
V
I
I
O
输入
发生器
V
I
便条
一个
t
f
t
r
50%
0 v
50%
V
OH
V
OL
50
t
PHL
t
PLH
V /2
CC1
V /2
CC1
V
CC1
90%
10%
C
便条 b
L
V
O
V
O
V
I
输出
在
0 v
ISOLA
tion 屏障
V
I
0 v
t
fs
2.7 v
50%
V
OH
V
OL
V
CC1
V
CC1
C
15 pf
20%
L
ISOLA
tion 屏障
V
CM
V
O
V
或者
0 v
CC
V
CC1
V
CC2
在
输出
GND2
C
15 pf
20%
L
C = 0.1 f,
1%
I
GND1
iso721,iso721m
SLLS629A–JANUARY2006–REVISEDJANUARY2006
一个.theinputpulseissuppliedbyageneratorhavingthefollowingcharacteristics:
•
PRR
≤
50khz,50%dutycycle
•
t
r
≤
3ns
•
t
f
≤
3ns
•
Z
O
=50
Ω
.
b.c
L
=15pfandincludesinstrumentationandfixturecapacitancewithin±20%.
figure1.switchingcharacteristictestcircuitandvoltagewaveforms
便条:v
I
transitiontimeis100ns
figure2.failsafedelaytimetestcircuitandvoltagewaveforms
便条:通过/failcriteriaisnochangeinv
O
.
figure3.一般-modetransientimmunitytestcircuitandvoltagewaveform
8
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