1

CA3240, CA3240A

Dual, 4.5MHz, BiMOS Operational Amplifier

with MOSFET Input/Bipolar Output

The CA3240A and CA3240 are dual versions of the popular

CA3140 series integrated circuit operational amplifiers. They

combine the advantages of MOS and bipolar transistors on

the same monolithic chip. The gate-protected MOSFET

(PMOS) input transistors provide high input impedance and

a wide common-mode input voltage range (typically to 0.5V

below the negative supply rail). The bipolar output

transistors allow a wide output voltage swing and provide a

high output current capability.

TheCA3240A andCA3240are compatible with theindustry

standard 1458 operational amplifiers in similar packages.The

offset null feature is available only when these types are supplied

in the14leadPDIPpackage (E1suffix).

Functional Diagram

Features

• Dual Version of CA3140

• Internally Compensated

• MOSFET Input Stage

Be Swung 0.5V Below Negative Supply Voltage Rail

• Directly Replaces Industry Type 741 in Most Applications

Applications

• Ground Referenced Single Amplifiers in Automobile and

Portable Instrumentation

• Sample and Hold Amplifiers

• Long Duration Timers/Multivibrators (Microseconds-

Minutes-Hours)

• Photocurrent Instrumentation

Pinouts

CA3240, CA3240A (PDIP)

TOP VIEW

CA3240A (PDIP)

TOP VIEW

Ordering Information

PART NUMBER

TEMP.

PACKAGE

PKG.

NO.

CA3240AE

-40 to 85

8 Ld PDIP

E8.3

CA3240AE1

-40to85

14 LdPDIP

E14.3

CA3240E

-40 to 85

8 Ld PDIP

E8.3

A

BIAS CIRCUIT

CURRENT SOURCES

AND REGULATOR

A

2mA

4mA

2mA

1.6mA

2

µA

200

µA

200

µA

IN-

OUT-

OFFSET NULL

12pF

V+

V-

+

-

NOTE: Only available with 14 lead DIP (E1 Suffix).

A

PUT

PUT

• Intrusion Alarm System

• Active Filters

• Comparators

• Function Generators

• Instrumentation Amplifiers

• Power Supplies

OUTPUT (A)

INV.

INPUT (A)

NON-INV.

1

2

3

4

8

7

6

5

V+

OUTPUT

INV.

NON-INV.

INPUT (A)

V-

INPUT (B)

INPUT (B)

INV.

NON-INV.

OFFSET

V-

OFFSET

NON - INV.

INV.

OFFSET

V+

†

OUTPUT (A)

NC

OUTPUT (B)

V+

†

OFFSET

1

2

3

4

5

6

7

14

13

12

11

10

9

8

INPUT (A)

INPUT (A)

NULL (A)

NULL (B)

INPUT (B)

INPUT (B)

NULL (A)

NULL (B)

† Pins 9 and 13 internally connected through approximately 3

Ω.

Data Sheet

August 2001

File Number

1050.5

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

1-888-INTERSIL or 321-724-7143