LM747.pdf

November 1994

LM747

Dual Operational Amplifier

General Description

The LM747 is a general purpose dual operational amplifier.

The two amplifiers share a common bias network and power

supply leads. Otherwise, their operation is completely inde-

pendent.

Additional features of the LM747 are: no latch-up when in-

put common mode range is exceeded, freedom from oscilla-

tions, and package flexibility.

The LM747C/LM747E is identical to the LM747/LM747A

except that the LM747C/LM747E has its specifications

guaranteed over the temperature range from 0 § Cto a 70 § C

instead of b 55 § Cto a 125 § C.

Features

Y No frequency compensation required

Y Short-circuit protection

Y Wide common-mode and differential voltage ranges

Y Low power consumption

Y No latch-up

Y Balanced offset null

Connection Diagrams

Metal Can Package

Dual-In-Line Package

TL/H/11479±4

TL/H/11479±5

Order Number LM747CN or LM747EN

See NS Package Number N14A

Order Number LM747H

See NS Package Number H10C

*V a A and V a B are internally connected.

C 1995 National Semiconductor Corporation

TL/H/11479

RRD-B30M115/Printed in U. S. A.

Absolute Maximum Ratings

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales

Office/Distributors for availability and specifications.

Supply Voltage

LM747/LM747A

Input Voltage (Note 2)

g 15V

Output Short-Circuit Duration

Indefinite

Operating Temperature Range

LM747/LM747A

b 55 § Cto a 125 § C

g 22V

LM747C/LM747E

0 § Cto a 70 § C

LM747C/LM747E

g 18V

Storage Temperature Range

b 65 § Cto a 150 § C

Power Dissipation (Note 1)

800 mW

Lead Temperature (Soldering, 10 sec.)

300 § C

Differential Input Voltage

g 30V

Electrical Characteristics (Note 3)

LM747A/LM747E

LM747

LM747C

Parameter

Conditions

Units

Min Typ Max Min Typ Max Min Typ Max

Input Offset Voltage T A e 25 § C

R S s 10 k X

1.0 5.0

2.0 6.0

R S s 50 X

0.8 3.0

R S s 50 X

4.0

R S s 10 k X

6.0

7.5

Average Input Offset

m V/ § C

Voltage Drift

Input Offset Voltage T A e 25 § C, V S e g 20V

g 10

g 15

Adjustment Range

Input Offset Current T A e 25 § C

3.0 30

20 200

85 500

300

Average Input Offset

0.5

nA/ § C

Current Drift

Input Bias Current

T A e 25 § C

30 80

80 500

80 500 nA

T AMIN s T A s T AMAX

0.210

1.5

0.8 m A

Input Resistance

T A e 25 § C, V S e g 20V 1.0 6.0

0.3 2.0

M X

V S e g 20V

0.5

Input Voltage Range T A e 25 § C

g 12

g 13

g 12

g 13

g 12

g 13

Large Signal

T A e 25 § C, R L t 2k X

Voltage Gain

V S e g 20V, V O e g 15V 50

V/mV

V S e g 15V, V O e g 10V

50 200

20 200

V/mV

R L t 2k X

V S e g 20V, V O e g 15V 32

V/mV

V S e g 15V, V O e g 10V

V/mV

V S e g 5V, V O e g 2V

V/mV

Output Voltage Swing V S e g 20V

R L t 10 k X

g 16

R L t 2k X

g 15

V S e g 15V

R L t 10 k X

g 12

g 14

g 12

g 14

R L t 2k X

g 10 g 13

Output Short

T A e 25 § C

10 25 35

Circuit Current

Common-Mode

R S s 10 k X ,V CM e g 12V

70 90

Rejection Ratio

R S s 50 k X ,V CM e g 12V 80 95

Electrical Characteristics (Note 3) (Continued)

LM747A/LM747E

LM747

LM747C

Parameter

Conditions

Units

Min Typ Max Min Typ Max Min Typ Max

Supply Voltage

V S e g 20V to V S e g 5V

Rejection Ratio

R S s 50 X

R S s 10 k X

77 96

Transient Response

T A e 25 § C, Unity Gain

Rise Time

0.25 0.8

0.3

m s

Overshoot

6.0 20

Bandwidth (Note 4)

T A e 25 § C

0.437 1.5

MHz

Slew Rate

T A e 25 § C, Unity Gain

0.3 0.7

0.5

V/ m s

Supply Current/Amp

T A e 25 § C

2.5

1.7 2.8

1.7 2.8 mA

Power Consumption/Amp T A e 25 § C

V S e g 20V

80 150

V S e g 15V

50 85

LM747A

V S e g 20V

T A e T AMIN

165

T A e T AMAX

135

LM747E

V S e g 20V

150

T A e T AMIN

150

T A e T AMAX

150

LM747

V S e g 15V

T A e T AMIN

60 100

T A e T AMAX

45 75

Note 1: The maximum junction temperature of the LM747C/LM747E is 100 § C. For operating at elevated temperatures, devies in the TO-5 package must be

derated based on a thermal resistance of 150 § C/W, junction to ambient, or 45 § C/W, junction to case. The thermal resistance of the dual-in-line package is 100 § C/

W, junction to ambient.

Note 2: For supply voltages less than g 15V, the absolute maximum input voltage is equal to the supply voltage.

Note 3: These specifications apply for g 5V s V S s g 20V and b 55 § C s T A s 125 § C for the LM747A and 0 § C s T A s 70 § C for the LM747E unless otherwise

specified. The LM747 and LM747C are specified for V S e g 15V and b 55 § C s T A s 125 § C and 0 § C s T A s 70 § C, respectively, unless otherwise specified.

Note 4: Calculated value from: 0.35/Rise Time ( m s).

Schematic Diagram (Each Amplifier)

TL/H/11479±1

Note: Numbers in parentheses are pin numbers for amplifier B. DIP only.

Typical Performance Characteristics

Input Bias and Offset

Currents vs Ambient

DC Parameters

Common Mode Rejection

Temperature

vs Supply Voltage

Ratio vs Frequency

Output Swing and

Output Voltage Swing

Input Range vs

vs Frequency

vs Load Resistance

Supply Voltage

Normalized DC Parameters

Frequency Characteristics

vs Ambient Temperature

Transient Response

vs Ambient Temperature

Frequency Characteristics

Output Resistance

Open Loop Transfer

vs Supply Voltage

vs Frequency

Characteristics vs Frequency

TL/H/11479±2

Typical Performance Characteristics (Continued)

Input Resistance and

Input Capacitance

Broadband Noise for

vs Frequency

Various Bandwidths

Input Noise Voltage

and Current

Voltage Follower Large

vs Frequency

Signal Pulse Response

TL/H/11479±3

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