Datasheet LM3080N, LM3080M, LM3080AN Datasheet (NSC)

LM3080
Operational Transconductance Amplifier

LM3080 Operational Transconductance Amplifier

February 1995

General Description

The LM3080 is a programmable transconductance block in­tended to fulfill a wide variety of variable gain applications.
The LM3080 has differential inputs and high impedance
push-pull outputs. The device has high input impedance and
its transconductance (g
plifier bias current (I

High slew rate together with programmable gain make the
LM3080 an ideal choice for variable gain applications such
as sample and hold, multiplexing, filtering, and multiplying.

The LM3080N and LM3080AN are guaranteed from 0

a

70§C.

) is directly proportional to the am-

m

).

ABC

Cto

§

Schematic and Connection Diagrams

Features

Y

Slew rate (unity gain compensated): 50 V/ms

Y

Fully adjustable gain: 0 to g

Y

Extended gmlinearity: 3 decades

Y

Flexible supply voltage range:g2V tog18V

Y

Adjustable power consumption

m

RLlimit

#

TL/H/7148– 1

Dual-In-Line Package

Top View

Order Number LM3080AN, LM3080M or LM3080N

See NS Package Number M08A or N08E

C

1995 National Semiconductor Corporation RRD-B30M115/Printed in U. S. A.

TL/H/7148

TL/H/7148– 2

Absolute Maximum Ratings

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.

Supply Voltage (Note 2)

LM3080
LM3080A

g

18V

g

22V

Power Dissipation 250 mW

g

Differential Input Voltage

5V

Amplifier Bias Current (I

DC Input Voltage

)2mA

ABC

a

VStobV

Output Short Circuit Duration Indefinite

Operating Temperature Range

LM3080N or LM3080AN 0

Storage Temperature Range

Ctoa70§C

§

b

65§Ctoa150§C

Lead Temperature (Soldering, 10 sec.) 260§C

S

Electrical Characteristics (Note 1)

Parameter Conditions

Input Offset Voltage 0.4 5 0.4 2 mV

Over Specified Temperature Range 6 5 mV

e

I

5 mA 0.3 0.3 2 mV

ABC

Input Offset Voltage Change 5 mAsI

s

500 mA 0.1 0.1 3 mV

ABC

Input Offset Current 0.1 0.6 0.1 0.6 mA

Input Bias Current 0.4 5 0.4 5 mA

Over Specified Temperature Range 1 7 1 8 mA

Forward Transconductance (gm) 6700 9600 13000 7700 9600 12000 mmho

Over Specified Temperature Range 5400 4000 mmho

Peak Output Current R

e

L

e

R

L

e

R

L

Over Specified Temperature Range

e

0, I
0 350 500 650 350 500 650 mA

5 mA5357mA

ABC

0

Peak Output Voltage

Positive R
Negative R

L

L

e %
e %

,5mA
,5mA

s

I

500 mA

ABC

s

s

I

500 mA

ABC

s

Amplifier Supply Current 1.1 1.1 mA

Input Offset Voltage Sensitivity

Positive DV
Negative DV

OFFSET

OFFSET

/DV
/DV

a
b

Common Mode Rejection Ratio 80 110 80 110 dB

Common Mode Range

Input Resistance 10 26 10 26 kX

Magnitude of Leakage Current I

Differential Input Current I

e

0 0.2 100 0.2 5 nA

ABC

ABC

e

0, Input

e

g

4V 0.02 100 0.02 5 nA

Open Loop Bandwidth 2 2 MHz

Slew Rate Unity Gain Compensated 50 50 V/ms

Note 1: These specifications apply for V

Note 2: Selection to supply voltage above

e

g

15V and T

S

g

22V, contact the factory.

e

25§C, amplifier bias current (I

A

LM3080 LM3080A

Units

Min Typ Max Min Typ Max

300 300 mA

a12a
b12b

14.2

14.4

a12a
b12b

14.2 V

14.4 V

20 150 20 150 mV/V
20 150 20 150 mV/V

g

12g14

)e500 mA, unless otherwise specified.

ABC

g

12g14 V

2

Typical Performance Characteristics

Input Offset Voltage Input Offset Current Input Bias Current

Peak Output Current Common Mode Range

Total Power Dissipation Leakage Current Input Leakage

Transconductance Input Resistance Amplifier Bias Current

Peak Output Voltage and

Amplifier Supply Current

Amplifier Bias Voltage vs

TL/H/7148– 3

3

Typical Performance Characteristics (Continued)

Input and Output Capacitance

Leakage Current Test Circuit

Differential Input Current Test Circuit

TL/H/7148– 4

TL/H/7148– 6

Output Resistance

TL/H/7148– 5

Unity Gain Follower

TL/H/7148– 7

TL/H/7148– 8

4

Physical Dimensions inches (millimeters)

Molded Package SO (M)

Order Number LM3080M

NS Package Number M08A

5

Physical Dimensions inches (millimeters) (Continued)

Molded Dual-In-Line Package (N)

Order Number LM3080AN or LM3080N

LM3080 Operational Transconductance Amplifier

NS Package Number N08E

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