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LMV393G-SM1-R Folha de dados(PDF) 8 Page - Unisonic Technologies

Nome de Peças LMV393G-SM1-R
Descrição Electrónicos  DUAL GENERAL PURPOSE, LOW VOLAGE, COMPARATORS
PDF  11 Pages
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Fabricante Electrônico  UTC [Unisonic Technologies]
Página de início  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

LMV393G-SM1-R Folha de dados(HTML) 8 Page - Unisonic Technologies

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LMV393
Preliminary
LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD
8 of 11
www.unisonic.com.tw
QW-R104-004.c
APPLI CAT I ON CI RCU I T S(Cont .)
-
+
15k
D1
*
R1
1M
R2
100k
D2
C1
80pF
R5
1M
V+
R3
1M
R4
1M
VOUT
6µs
60µs
tot1
t2
-V
+
V
+
Pulse Generator
*FOR LARGE RATIOS OF R1/R2.
D1 CAN BE OMITTED.
0
At last, we get,
2
ln
C
R
=
t
1
4
1
2
ln
C
R
=
t
1
5
2
These terms have a slight error because Vmax is not exactly equal to 2/3 VCC but is actually reduced by the diode
drop to:
)
V
-
(V
3
2
=
V
BE
CC
max
1
4
1
C
/R
t
-
BE
e
=
)
V
-
2(1
1
1
5
2
C
/R
t
-
BE
e
=
)
V
-
2(1
1
And that’s the exact value we get.
)
V
-
ln2(1
C
R
=
t
BE
1
4
1
)
V
-
ln2(1
C
R
=
t
BE
1
5
2



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