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CA3094 Datasheet(Fiches technique) 6 Page - Intersil Corporation

Numéro de pièce CA3094
Description  30MHz, High Output Current Operational Transconductance Amplifier (OTA)
Télécharger  14 Pages
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Fabricant  INTERSIL [Intersil Corporation]
Site Internet  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

CA3094 Datasheet(HTML) 6 Page - Intersil Corporation

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Application Information
For additional application information, refer to
Application Note AN6048, ?Some Applications of a
Programmable Power/Switch Ampli?er IC? and AN6077
?An IC Operational Transconductance Ampli?er (OTA)
with Power Capability?.
Design Considerations
The selection of the optimum ampli?er bias current (IABC)
depends on:
1. The Desired Sensitivity - The higher the IABC, the higher
the sensitivity, i.e., a greater drive current capability at the
output for a speci?c voltage change at the input.
2. Required Input Resistance - The lower the IABC, the high-
er the input resistance.
If the desired sensitivity and required input resistance are
not known and are to be experimentally determined, or the
anticipated equipment design is suf?ciently ?exible to
tolerate a wide range of these parameters, it is
recommended that the equipment designer begin his
calculations with an IABC of 100A, since the CA3094 is
characterized at this value of ampli?er bias current.
The CA3094 is extremely versatile and can be used in a
wide variety of applications.
FIGURE 9. PHASE COMPENSATION TEST CIRCUIT
FIGURE 10. PRESETTABLE ANALOG TIMER
Test Circuits (Continued)
CA3094A
2
3
6
1
4
8
5
-15V
51
?
2k
?
CC
56k
?
7
R2
-
+
+15V
OUTPUT
R3
RC
R1
CLOSED
LOOP GAIN
(dB)
R1
(k
?)
R2
(k
?)
R3
(k
?)
010
?
10
20
10
1
10
40
1
0.1
10
CA3094A
3
2
6
4
5
7
8
-
+
C1
D1
S1
R5
R6
R7
COMMON
V+ = 30V
120VAC
S2
R8
R1
R2
R3
R4
RLOAD
EOUT
MT1
MT2
(NOTE 12)
NOTES:
12. C1 = 0.5F
D1 = 1N914
R1 = 0.51M? = 3 min.
R2 = 5.1M? = 30 min.
R3 = 22M? = 2 hrs.
R4 = 44M? = 4 hrs.
R5 = 1.5k?
R6 = 50k?
R7 = 5.1k?
R8 = 1.5k?
13. Potentiometer required for initial time set to permit device inter-
connecting. Time variation with temperature <0.3%/oC.
0
0
29V
27V
3V
S1
3
6
Time = 1 hr.
S2 Set to R4
CA3094, CA3094A, CA3094B


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