©

1987

BIPOLAR ANALOG INTEGRATED CIRCUIT

µµµµPC4081

J-FET INPUT OPERATIONAL AMPLIFIER

DATA SHEET

Document No. G15343EJ3V0DS00 (3rd edition)

(Previous No. IC-1974)

Date Published February 2001 NS CP(K)

Printed in Japan

The information in this document is subject to change without notice. Before using this document, please

confirm that this is the latest version.

Not all devices/types available in every country. Please check with local NEC representative for

availability and additional information.

The mark 5 shows major revised points.

DESCRIPTION

The

µPC4081 is a single operational amplifier incorporating well matched ion implant P-channel J-FET on the same chip

with standard bipolar transistors. The key features of this op amp is very low input bias current and high slew rate ten

times faster than conventional general purpose op amps. By these features

µPC4081 is excellent choice for wide variety

of applications including integrator, active filter, pulse amp etc.

FEATURES

• Low noise: en = 25 nV/ Hz (TYP.)

• Very low input bias and offset currents

• Output short circuit protection

• High input impedance...J-FET Input stage

• Internal frequency compensation

• High slew rate...13 V/

µs (TYP.)

ORDERING INFORMATION

Part Number

Package

µPC4081C

8-pin plastic DIP (7.62 mm (300))

µPC4081G2

8-pin plastic SOP (5.72 mm (225))

EQUIVALENT CIRCUIT

PIN CONFIGURATION (Top View)

PC4081C, 4081G2

1

2

3

4

8

7

6

5

NC

V+

OUT

OFFSET

NULL

+

_

OFFSET

NULL

II

IN

V

µ

_

Remark NC : No Connection

R1

R8

R9

R6

D1

R7

R10

R11

D2

Q15

R4

R2

R5

R3

II

IN

(2)

Q1

Q2

Q8

Q16

Q9

Q10

Q12

Q13

Q5

Q14

Q3

Q4

Q11

Q6

Q7

C1

OFFSET

NULL

OFFSET

NULL

OUT

V

–

V

+

(3)

(1)

(5)

(6)

(4)

(7)