CA3094B Intersil, CA3094B Datasheet - Page 7

• Manufacturer Part Number: CA3094B
• Description: 30MHz / High Output Current Operational Transconductance Amplifier
• Manufacturer: Intersil

Typical Applications
INPUT
VOLTAGE A
2/3V+
VOLTAGE AT
TERMINAL 8
here
+18
A
V+
E
0
0
12V
IN
E OUT
---------------- -
DC
0.01 F
E IN
V+ = 18V
FIGURE 11A. INVERTING OP AMP
Z
1
=
S
1N914
1
100
k
100
k
100
k
f
B
NOTE: In single-ended output operation, the CA3094 may require a pull up or pull down resistor.
C
Z 2
------ -
Z 1
A
1N914
3-18
R
270
k
100
k
C
depends on the characteristics of Z
12V
-
+
I
CA3094
I
TIME DELAY (s) = RC (APPROX.)
FIGURE 13. RC TIMER TRIGGERED BY EXTERNAL NEGATIVE PULSE
D
R
1M
R
2.2M
R
1M
1
2
R
100k
R
220k
3
1
2
Z
3
2
2
2
3
220k
R
ABC
+
-
7
CA3094
CA3094, CA3094A, CA3094B
FIGURE 11. APPLICATION OF THE CA3094
+
-
5
CA3094
4
4
8
7
6
5
FIGURE 12. RC TIMER
E
(NOTE)
8
OUT
220k
1
6
and Z
E
2k
PULL UP
OUT
2
C
0.5 F
E
1
R
2k
Where E
LOAD
Problem: To calculate the maximum value of R required to
Given:
I
I
I
curve.
Then: I
†
R MAX
R MAX
I
I
ABC
E
= 500nA at I
= 5 A can be determined by drawing a line on Figure 3 through
of I
OUT
Ratio of I
E
FIGURE 11B. NON-INVERTING MODE, AS A FOLLOWER
IN
ABC
= 100 A and I
OUT
I
=
=
I ABC
On a negative going transient at input (A), a negative
pulse at C will turn “on” the CA3094, and the output (E)
will go from a low to a high level.
At the end of the time constant determined by C
R
output will be pulled low by R
be independent of the interval when input (A) returns
to a high level.
= 33nA at I
switch a 100mA output current comparator
2
18V 12V
--------------------------- -
180M
I
, R
= E
at T
33nA
A
B
C
D
E
ABC
3
=
IN
, the CA3094 will return to the “off” state and the
–
V+
V+
A
5 A,
0
0
0
0
0
= 25
= 100 A (from Figure 3)
ABC
B
2 3
= 500nA parallel to the typical T
o
=
R ABC
C to I
= 5 A
180M
†
+
-
CA3094
=
I
120M
at T
=
3
/
4
3.6M
at T A
A
V+
= -55
LOAD
at T A
=
o
C for any given value
---------- -
5 A
18V
25
. This condition will
o
=
C
–
55
o
C
A
E
(NOTE)
OUT
= 25
1
, R
o
C
1
,