1

CA3140, CA3140A

4.5MHz, BiMOS Operational Amplifier with

MOSFET Input/Bipolar Output

The CA3140A and CA3140 are integrated circuit operational

amplifiers that combine the advantages of high voltage PMOS

transistors with high voltage bipolar transistors on a single

monolithic chip.

The CA3140A and CA3140 BiMOS operational amplifiers

feature gate protected MOSFET (PMOS) transistors in the

input circuit to provide very high input impedance, very low

input current, and high speed performance. The CA3140A

and CA3140 operate at supply voltage from 4V to 36V (either

single or dual supply). These operational amplifiers 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 field 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

“741” and other industry standard op amps. The CA3140A and

CA3140 are intended for operation at supply voltages up to 36V

(

±18V).

Features

• MOSFET Input Stage

Swung 0.5V Below Negative Supply Voltage Rail

- Output Swing Complements Input Common Mode

Range

• Directly Replaces Industry Type 741 in Most

Applications

Applications

• Ground-Referenced Single Supply Amplifiers in Automo-

bile and Portable Instrumentation

• Sample and Hold Amplifiers

• Long Duration Timers/Multivibrators

(

µseconds-Minutes-Hours)

• Photocurrent Instrumentation

• Peak Detectors

• Active Filters

• Comparators

• Interface in 5V TTL Systems and Other Low

Supply Voltage Systems

• All Standard Operational Amplifier Applications

• Function Generators

• Tone Controls

• Power Supplies

• Portable Instruments

• Intrusion Alarm Systems

Pinouts

CA3140 (METAL CAN)

TOP VIEW

CA3140 (PDIP, SOIC)

TOP VIEW

Ordering Information

PART NUMBER

(BRAND)

TEMP.

PACKAGE

PKG.

NO.

CA3140AE

-55 to 125

8 Ld PDIP

E8.3

CA3140AM

(3140A)

-55 to 125

8 Ld SOIC

M8.15

CA3140AS

-55 to 125

8 Pin Metal Can

T8.C

CA3140AT

-55 to 125

8 Pin Metal Can

T8.C

CA3140E

-55 to 125

8 Ld PDIP

E8.3

CA3140M

(3140)

-55 to 125

8 Ld SOIC

M8.15

CA3140M96

(3140)

-55 to 125

8 Ld SOIC Tape

and Reel

CA3140T

-55 to 125

8 Pin Metal Can

T8.C

TAB

OUTPUT

INV.

V- AND CASE

OFFSET

NON-INV.

V+

OFFSET

2

4

6

1

3

7

5

8

-

+

NULL

INPUT

NULL

INPUT

STROBE

INV. INPUT

NON-INV.

V-

1

2

3

4

8

7

6

5

STROBE

V+

OUTPUT

OFFSET

NULL

OFFSET

NULL

INPUT

-

+

Data Sheet

September 1998

File Number

957.4

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 321-724-7143