參數(shù)資料
型號: L584
廠商: 意法半導(dǎo)體
英文描述: MULTIFUNCTION INJECTION INTERFACE
中文描述: 多功能注射液界面
文件頁數(shù): 7/13頁
文件大小: 178K
代理商: L584
The drive current for the two darlingtons and the
waveformtime constantsareall definedinturn bya
resistor betweenpin 9 and ground.
The recommendedvalue for I
r
is 1mA whichis ob-
tained with a 1.2K
resistor. The darlington drive
currentsare givenby :
PNP : I
dp
= 35 I
r
typ.
The durationof the high current level (t
2
in fig 4) is
set by a capacitor connected between pin 6 and
NPN : I
dn
= 100 I
r
typ.
ground.Thiscapacitor,C1isrelatedtotheduration,
t
2
, by:
V
6th
– V
6sat
t
2
= C
1
I
6
The dischargetime constant(t
off
in fig4) is set by a
capacitorC
2
betweenpin7 andgroundandis found
from:
V
7th
– V
7sat
t
off
=C2
I
7
C
1
I
ref
= 12
(typ.)
C
r
= 12
(typ)
I
ref
Figure 4
: Waveforms of the Typical ApplicationCircuit of Fig. 2.
L584
7/13
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