S E M I C O N D U C T O R
CA3140
BiMOS Operational Ampli鏗乪r
with MOSFET Input/Bipolar Output
Description
The CA3140A and CA3140 are integrated circuit operational ampli鏗乪rs
that combine the advantages of high voltage PMOS transistors with
high voltage bipolar transistors on a single monolithic chip. Because of
this unique combination of technologies, this device can now provide
designers, for the 鏗乺st time, with the special performance features of
the CA3130 CMOS operational ampli鏗乪rs and the versatility of the 741
series of industry standard operational ampli鏗乪rs.
The CA3140A and CA3140 BiMOS operational ampli鏗乪rs feature gate
protected MOSFET (PMOS) transistors in the input circuit to provide
very high input impedance, very low input current, and high speed per-
formance. The CA3140A and CA3140 operate at supply voltage from
4V to 36V (either single or dual supply). These operational ampli鏗乪rs
are internally phase compensated to achieve stable operation in unity
gain follower operation, and additionally, have access terminal for a
supplementary external capacitor if additional frequency roll-off is
desired. Terminals are also provided for use in applications requiring
input offset voltage nulling. The use of PMOS 鏗乪ld effect transistors in
the input stage results in common mode input voltage capability down
to 0.5V below the negative supply terminal, an important attribute for
single supply applications. The output stage uses bipolar transistors
and includes built-in protection against damage from load terminal
short circuiting to either supply rail or to ground.
The CA3140 Series has the same 8-lead pinout used for the 鈥?41鈥?and
other industry standard op amps. The CA3140A and CA3140 are
intended for operation at supply voltages up to 36V (鹵18V).
April 1994
Features
鈥?MOSFET Input Stage
- Very High Input Impedance (Z
IN
) -1.5T鈩?(Typ.)
- Very Low Input Current (I
l
) -10pA (Typ.) at
鹵15V
- Wide Common Mode Input Voltage Range
(VlCR) - Can be Swung 0.5V Below Negative
Supply Voltage Rail
- Output Swing Complements Input Common
Mode Range
鈥?Directly Replaces Industry Type 741 in Most
Applications
Applications
鈥?Ground-Referenced Single Supply Ampli鏗乪rs in
Automobile and Portable Instrumentation
鈥?Sample and Hold Ampli鏗乪rs
鈥?Long Duration Timers/Multivibrators
(碌seconds-Minutes-Hours)
鈥?Photocurrent Instrumentation
鈥?Peak Detectors
鈥?Active Filters
鈥?Comparators
鈥?Interface in 5V TTL Systems and Other Low
Supply Voltage Systems
鈥?All Standard Operational Ampli鏗乪r Applications
鈥?Function Generators
鈥?Tone Controls
鈥?Power Supplies
鈥?Portable Instruments
鈥?Intrusion Alarm Systems
Ordering Information
PART NUMBER
CA3140AE
CA3140AM
CA3140AS
CA3140AT
CA3140BT
CA3140E
CA3140M
CA3140M96
CA3140T
TEMP. RANGE
-55
o
C to +125 C
to
+125
o
C
o
o
PACKAGE
8 Lead Plastic DIP
8 Lead SOIC
8 Pin Can, Lead Formed
8 Pin Can
8 Pin Can
8 Lead Plastic DIP
8 Lead SOIC
8 Lead SOIC*
8 Pin Can
-55
o
C to +125
o
C
-55
o
C
-55
o
C to +125 C
to
+125
o
C
o
-55
o
C to +125
o
C
-55
o
C
-55
o
-55
o
C to +125
o
C
C to +125 C
to
+125
o
C
-55
o
C
* Denotes Tape and Reel
Pinouts
CA3140 (TO-5 STYLE CAN)
TOP VIEW
TAB
8
OFFSET
NULL
INV. 2
INPUT
NON-INV.
INPUT
3
1
7
V+
6 OUTPUT
5
OFFSET
NULL
STROBE
OFFSET
NULL
INV. INPUT
CA3140 (PDIP, SOIC)
TOP VIEW
1
2
3
4
8
STROBE
V+
OUTPUT
OFFSET
NULL
鈥?/div>
+
鈥?/div>
+
7
6
5
NON-INV.
INPUT
V-
4
V- AND CASE
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper I.C. Handling Procedures.
Copyright
漏
Harris Corporation 1993
File Number
957.2
2-123
next