TEXAS INSTRUMENTS A741, A741Y Operation Manual

µA741, µA741Y

GENERAL-PURPOSE OPERATIONAL AMPLIFIERS

SLOS094B – NOVEMBER 1970 – REVISED SEPTEMBER 2000

D

Short-Circuit Protection

D

Offset-Voltage Null Capability

D

Large Common-Mode and Differential
Voltage Ranges

D

No Frequency Compensation Required

D

Low Power Consumption

D

No Latch-Up

D

Designed to Be Interchangeable With
Fairchild µA741

description

The µA741 is a general-purpose operational
amplifier featuring offset-voltage null capability.

The high common-mode input voltage range and
the absence of latch-up make the amplifier ideal
for voltage-follower applications. The device is
short-circuit protected and the internal frequency
compensation ensures stability without external
components. A low value potentiometer may be
connected between the offset null inputs to null
out the offset voltage as shown in Figure 2.

µA741M ...J PACKAGE

(TOP VIEW)

NC

1

NC

2

OFFSET N1

V

CC

µA741M ...JG PACKAGE

µA741C, µA741I . . . D, P, OR PW PACKAGE

OFFSET N1

IN+

V

CC–

3

IN–

4

IN+

5

–

6

NC

7

(TOP VIEW)

1

IN–

2
3
4

µA741M ...U PACKAGE

(TOP VIEW)

NC

14

NC

13

NC

12

V

11

OUT

10

OFFSET N2

9

NC

8

NC

8

V

7

CC+

OUT

6

OFFSET N2

5

CC+

The µA741C is characterized for operation from
0°C to 70°C. The µA741I is characterized for
operation from – 40°C to 85°C.The µA741M is
characterized for operation over the full military
temperature range of –55°C to 125°C.

symbol

OFFSET N1

IN +

IN –

OFFSET N2

+

OUT

–

NC

OFFSET N1

IN–
IN+

V

CC–

µA741M . . . FK PACKAGE

NC

IN–

NC

IN+

NC

1
2
3
4
5

(TOP VIEW)

NC

OFFSET N1

NC

3 2 1 20 19

4
5
6
7
8

910111213

NC

NC

CC–

V

NC

10

NC

9

V

8

CC+

OUT

7

OFFSET N2

6

NC

NC

18
17
16
15
14

NC

NC
V

CC+

NC
OUT
NC

PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.

NC – No internal connection

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

OFFSET N2

Copyright  2000, Texas Instruments Incorporated

1

µA741, µA741Y

CHIP

GENERAL-PURPOSE OPERATIONAL AMPLIFIERS

SLOS094B – NOVEMBER 1970 – REVISED SEPTEMBER 2000

AVAILABLE OPTIONS

PACKAGED DEVICES

T

A

0°C to 70°C µA741CD µA741CP µA741CPW µA741Y

–40°C to 85°C µA741ID µA741IP

–55°C to 125°C µA741MFK µA741MJ µA741MJG µA741MU

The D package is available taped and reeled. Add the suffix R (e.g., µA741CDR).

SMALL

OUTLINE

(D)

CHIP

CARRIER

(FK)

CERAMIC

DIP

(J)

CERAMIC

DIP

(JG)

PLASTIC

DIP

(P)

TSSOP

(PW)

FLAT

PACK

(U)

FORM

(Y)

schematic

OFFSET N1
OFFSET N2

IN–

IN+

V

CC+

OUT

V

CC–

Component Count

Transistors 22
Resistors 11
Diode 1
Capacitor 1

2

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µA741, µA741Y

GENERAL-PURPOSE OPERATIONAL AMPLIFIERS

SLOS094B – NOVEMBER 1970 – REVISED SEPTEMBER 2000

µA741Y chip information

This chip, when properly assembled, displays characteristics similar to the µA741C. Thermal compression or
ultrasonic bonding may be used on the doped-aluminum bonding pads. Chips may be mounted with conductive
epoxy or a gold-silicon preform.

BONDING PAD ASSIGNMENTS

V

CC+

(7)

+

–

V

(6)

(4)

CC–

45

(8)

(7) (6)

(5)

IN+

IN–

OFFSET N1

OFFSET N2

(3)

(2)

(1)
(5)

OUT

(1)

36

(4)

(3)(2)

CHIP THICKNESS: 15 TYPICAL
BONDING PADS: 4 × 4 MINIMUM
TJmax = 150°C.
TOLERANCES ARE ±10%.
ALL DIMENSIONS ARE IN MILS.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

3

µA741, µA741Y
GENERAL-PURPOSE OPERATIONAL AMPLIFIERS

SLOS094B – NOVEMBER 1970 – REVISED SEPTEMBER 2000

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)

µA741C µA741I µA741M UNIT

Supply voltage, V
Supply voltage, V
Differential input voltage, VID (see Note 2) ±15 ±30 ±30 V
Input voltage, VI any input (see Notes 1 and 3) ±15 ±15 ±15 V
Voltage between offset null (either OFFSET N1 or OFFSET N2) and V
Duration of output short circuit (see Note 4) unlimited unlimited unlimited
Continuous total power dissipation See Dissipation Rating Table
Operating free-air temperature range, T
Storage temperature range –65 to 150 –65 to 150 –65 to 150 °C
Case temperature for 60 seconds FK package 260 °C
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds J, JG, or U package 300 °C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds D, P, or PW package 260 260 °C

†

Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES: 1. All voltage values, unless otherwise noted, are with respect to the midpoint between V

2. Differential voltages are at IN+ with respect to IN–.

3. The magnitude of the input voltage must never exceed the magnitude of the supply voltage or 15 V, whichever is less.

4. The output may be shorted to ground or either power supply . For the µA741M only , the unlimited duration of the short circuit applies
at (or below) 125°C case temperature or 75°C free-air temperature.

PACKAGE

D 500 mW 5.8 mW/°C 64°C 464 mW 377 mW N/A

FK 500 mW 11.0 mW/°C 105°C 500 mW 500 mW 275 mW

J 500 mW 11.0 mW/°C 105°C 500 mW 500 mW 275 mW

JG 500 mW 8.4 mW/°C90°C 500 mW 500 mW 210 mW

P 500 mW N/A N/A 500 mW 500 mW N/A

PW 525 mW 4.2 mW/°C25°C 336 mW N/A N/A

U 500 mW 5.4 mW/°C 57°C 432 mW 351 mW 135 mW

(see Note 1) 18 22 22 V

CC+

(see Note 1) –18 –22 –22 V

CC–

±15 ±0.5 ±0.5 V

0 to 70 –40 to 85 –55 to 125 °C

and V

CC+

TA = 85°C

POWER RATING

.

CC–

POWER RATING

TA = 125°C

TA ≤ 25°C

POWER RATING

A

DERATING

FACTOR

CC–

DISSIPATION RATING TABLE

DERATE

ABOVE T

A

TA = 70°C

POWER RATING

†

4

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PARAMETER

T

†

UNIT

VIOInput offset voltage

V

0

mV

IIOInput offset current

V

0

nA

IIBInput bias current

V

0

nA

V

V

V

V

A

gg

V/mV

CMRR

j

V

V

min

dB

k

yg y

V

±15 V

V/V

ICCSupply current

V

load

mA

PDTotal power dissipation

V

load

mW

PARAMETER

TEST CONDITIONS

UNIT

I

,

L

,

µA741, µA741Y

GENERAL-PURPOSE OPERATIONAL AMPLIFIERS

SLOS094B – NOVEMBER 1970 – REVISED SEPTEMBER 2000

electrical characteristics at specified free-air temperature, V

TEST

CONDITIONS

p

∆V

IO(adj)

ICR

OM

VD

r

i

r

o

C

i

SVS

I

OS

†

All characteristics are measured under open-loop conditions with zero common-mode input voltage unless otherwise specified. Full range for
the µA741C is 0°C to 70°C, the µA741I is –40°C to 85°C, and the µA741M is –55°C to 125°C.

NOTE 5: This typical value applies only at frequencies above a few hundred hertz because of the effects of drift and thermal feedback.

Offset voltage adjust range VO = 0 25°C ±15 ±15 mV

p

p

Common-mode input
voltage range

Maximum peak output
voltage swing

Large-signal differential
voltage amplification

Input resistance 25°C 0.3 2 0.3 2 MΩ
Output resistance VO = 0, See Note 5 25°C 75 75 Ω
Input capacitance 25°C 1.4 1.4 pF

Common-mode rejection
ratio

Supply voltage sensitivity
(∆VIO/∆VCC)

Short-circuit output current 25°C ±25 ±40 ±25 ±40 mA

pp

p

p

=

O

=

O

=

O

RL = 10 kΩ 25°C ±12 ±14 ±12 ±14
RL ≥ 10 kΩ
RL = 2 kΩ
RL ≥ 2 kΩ Full range ±10 ±10
RL ≥ 2 kΩ 25°C 20 200 50 200
VO = ±10 V

=

IC

ICR

= ±9 V to

CC

= 0,No

O

= 0,No

O

A

25°C 1 6 1 5

Full range 7.5 6

25°C 20 200 20 200

Full range 300 500

25°C 80 500 80 500

Full range 800 1500

25°C ±12 ±13 ±12 ±13

Full range ±12 ±12

Full range ±12 ±12

25°C ±10 ±13 ±10 ±13

Full range 15 25

25°C 70 90 70 90

Full range 70 70

25°C 30 150 30 150

Full range 150 150

25°C 1.7 2.8 1.7 2.8

Full range 3.3 3.3

25°C 50 85 50 85

Full range 100 100

MIN TYP MAX MIN TYP MAX

= ±15 V (unless otherwise noted)

CC±

µA741C µA741I, µA741M

µ

operating characteristics, V

t

r

SR Slew rate at unity gain

Rise time
Overshoot factor

= ±15 V, TA = 25°C

CC±

V

= 20 mV, R

CL = 100 pF,
VI = 10 V,

CL = 100 pF,

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

= 2 kΩ,

See Figure 1
RL = 2 kΩ,

See Figure 1

µA741C µA741I, µA741M

MIN TYP MAX MIN TYP MAX

0.3 0.3 µs
5% 5%

0.5 0.5 V/µs

5

µA741, µA741Y

PARAMETER

TEST CONDITIONS

UNIT

VOMMaximum peak output voltage swing

V

PARAMETER

TEST CONDITIONS

UNIT

I

,

L

,

GENERAL-PURPOSE OPERATIONAL AMPLIFIERS

SLOS094B – NOVEMBER 1970 – REVISED SEPTEMBER 2000

electrical characteristics at specified free-air temperature, V

= ±15 V, T

CC±

= 25°C (unless

A

otherwise noted)

µA741Y

MIN TYP MAX

V

IO

∆V

IO(adj)

I

IO

I

IB

V

ICR

A

VD

r

i

r

o

C

i

CMRR Common-mode rejection ratio VIC = V
k

SVS

I

OS

I

CC

P

D

†

All characteristics are measured under open-loop conditions with zero common-mode voltage unless otherwise specified.

NOTE 5: This typical value applies only at frequencies above a few hundred hertz because of the effects of drift and thermal feedback.

Input offset voltage VO = 0 1 6 mV
Offset voltage adjust range VO = 0 ±15 mV
Input offset current VO = 0 20 200 nA
Input bias current VO = 0 80 500 nA
Common-mode input voltage range ±12 ±13 V

p

Large-signal differential voltage amplification RL ≥ 2 kΩ 20 200 V/mV
Input resistance 0.3 2 MΩ
Output resistance VO = 0, See Note 5 75 Ω
Input capacitance 1.4 pF

Supply voltage sensitivity (∆VIO/∆VCC) VCC = ±9 V to ±15 V 30 150 µV/V
Short-circuit output current ±25 ±40 mA
Supply current VO = 0, No load 1.7 2.8 mA
Total power dissipation VO = 0, No load 50 85 mW

p

RL = 10 kΩ ±12 ±14
RL = 2 kΩ ±10 ±13

min 70 90 dB

ICR

operating characteristics, V

t

r

SR Slew rate at unity gain

Rise time
Overshoot factor

± = ±15 V, T

CC

= 25°C

A

V

= 20 mV, R

CL = 100 pF,
VI = 10 V,

CL = 100 pF,

= 2 kΩ,

See Figure 1
RL = 2 kΩ,

See Figure 1

µA741Y

MIN TYP MAX

0.3 µs
5%

0.5 V/µs

6

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

µA741, µA741Y

GENERAL-PURPOSE OPERATIONAL AMPLIFIERS

SLOS094B – NOVEMBER 1970 – REVISED SEPTEMBER 2000

PARAMETER MEASUREMENT INFORMATION

V

I

IN

0 V

INPUT VOLTAGE

WAVEFDORM

Figure 1. Rise Time, Overshoot, and Slew Rate

–

+

CL = 100 pF

OUT

RL = 2 kΩ

TEST CIRCUIT

APPLICATION INFORMATION

Figure 2 shows a diagram for an input offset voltage null circuit.

IN+

IN–

OFFSET N1

Figure 2. Input Offset Voltage Null Circuit

+

–

10 kΩ

To V

OFFSET N2

CC –

OUT

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7