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CA3160, CA3160A

4MHz, BiMOS Operational Amplifier with

MOSFET Input/CMOS Output

The CA3160A and CA3160 are integrated circuit operational

amplifiers that combine the advantage of both CMOS and

bipolar transistors on a monolithic chip. The CA3160 series are

frequency compensated versions of the popular CA3130

series.

Gate protected P-Channel MOSFET (PMOS) transistors are

used in the input circuit to provide very high input

impedance, very low input current, and exceptional speed

performance. 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 in single supply applications.

A complementary symmetry MOS (CMOS) transistor-pair,

capable of swinging the output voltage to within 10mV of

either supply voltage terminal (at very high values of load

impedance), is employed as the output circuit.

The CA3160 Series circuits operate at supply voltages

ranging from 5V to 16V, or

±2.5V to ±8V when using split

supplies, and have terminals for adjustment of offset voltage

for applications requiring offset null capability. Terminal

provisions are also made to permit strobing of the output

stage.

The CA3160A offers superior input characteristics over

those of the CA3160.

Features

• MOSFET Input Stage Provides:

. . . . . . . . . . . . . . . . . . . . . . . 2pA (Typ) at 5V Operation

• Common-Mode Input Voltage Range Includes

Negative Supply Rail; Input Terminals Can Be Swung

0.5V Below Negative Supply Rail

• CMOS Output Stage Permits Signal Swing to Either (or

Both) Supply Rails

Applications

• Ground Referenced Single Supply Amplifiers

• Fast Sample Hold Amplifiers

• Long Duration Timers/Monostables

• High Input Impedance Wideband Amplifiers

• Voltage Followers (e.g., Follower for Single Supply

D/A Converter)

• Wien-Bridge Oscillators

• Voltage Controlled Oscillators

• Photo Diode Sensor Amplifiers

Pinouts

CA3160

(METAL CAN)

TOP VIEW

CA3160

(PDIP)

TOP VIEW

NOTE: CA3160 Series devices have an on-chip frequency

compensation network. Supplementary phase compensation or

frequency roll-off (if desired) can be connected externally between

Terminals 1 and 8.

Ordering Information

PART NUMBER

TEMP.

PACKAGE

PKG.

NO.

CA3160AE

-55 to 125

8 Ld PDIP

E8.3

CA3160E

-55 to 125

8 Ld PDIP

E8.3

CA3160T

-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

INPUT

NULL

STROBE

SUPPLEMENTARY

COMPENSATION

OFFSET NULL

INV.

NON-INV.

V-

1

2

3

4

8

7

6

5

STROBE

V+

OUTPUT

OFFSET NULL

-

+

INPUT

INPUT

Data Sheet

September 1998

File Number

976.3

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

1-888-INTERSIL or 321-724-7143