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CA3018, CA3018A
January 1999
File Number 338.5
General Purpose Transistor Arrays
The CA3018 and CA3018A consist of four general purpose
silicon NPN transistors on a common monolithic substrate.
Two of the four transistors are connected in the Darlington
configuration. The substrate is connected to a separate
terminal for maximum flexibility.
The transistors of the CA3018 and the CA3018A are well
suited to a wide variety of applications in low power systems
in the DC through VHF range. They may be used as discrete
transistors in conventional circuits but in addition they
provide the advantages of close electrical and thermal
matching inherent in integrated circuit construction.
The CA3018A is similar to the CA3018 but features tighter
control of current gain, leakage, and offset parameters
making it suitable for more critical applications requiring
premium performance.
Features
• Matched Monolithic General Purpose Transistors
• h
FE
Matched
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±10%
• V
BE
Matched
- CA3018A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±2mV
- CA3018
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±5mV
• Operation From DC to 120MHz
• Wide Operating Current Range
• CA3018A Performance Characteristics Controlled from
10µA to 10mA
• Low Noise Figure . . . . . . . . . . . . . . . . 3.2dB (Typ) at 1kHz
• Full Military Temperature Range . . . . . . . -55
o
C to 125
o
C
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Applications
• Two Isolated Transistors and a Darlington Connected
Transistor Pair for Low Power Applications at Frequencies
from DC through the VHF Range
Part Number Information
PART NUMBER
CA3018 (obsolete)
CA3018A
TEMP.
RANGE (
o
C)
-55 to 125
-55 to 125
PACKAGE
12 Pin Metal Can
12 Pin Metal Can
PKG.
NO.
T12.B
T12.B
• Custom Designed Differential Amplifiers
• Temperature Compensated Amplifiers
• See Application Note, AN5296 “Application of the CA3018
Integrated Circuit Transistor Array” for Suggested Applica-
tions
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Pinout
CA3018, CA3018A
(METAL CAN)
TOP VIEW
12
1
2
3
4
Q
2
5
6
Q
3
Q
1
7
8
Q
4
11
10
9
SUBSTRATE
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Copyright
©
Harris Corporation 1999
HARRIS [ HARRIS CORPORATION ]
