UA741CN - STMicroelectronics

May 2009 Doc ID 5304 Rev 2 1/11

UA741

General-purpose single operational amplifier

Features

■Large input voltage range

■No latch-up

■High gain

■Short-circuit protection

■No frequency compensation required

■Same pin configuration as the UA709

Applications

■Summing amplifiers

■Voltage followers

■Integrators

■Active filters

■Function generators

Description

The UA741 is a high performance monolithic

operational amplifier constructed on a single

silicon chip. It is intended for a wide range of

analog applications.

The high gain and wide range of operating

voltages provide superior performances in

integrator, summing amplifier and general

feedback applications. The internal compensation

network (6 dB/octave) ensures stability in closed-

loop circuits.

DIP8

(plastic package)

SO-8

(plastic micropackage)

1 - Offset null 1

2 - Inverting input

3 - Non-inverting input

4 - VCC-

5 - Offset null 2

6 - Output

7 - VCC+

8 - N.C.

Pin connections

(top view)

www.st.com

Schematic diagram UA741

2/11 Doc ID 5304 Rev 2

1 Schematic diagram

Figure 1. Schematic diagram

Non-Inverting input

Q8 Q9 Q12

Q1 Q2

39kW

Q3 Q4

Q5 Q6 Q10 Q11

1kW

R12

50kW

Vcc-

Q17

Q16

Q20

R10

50W

Output

25W

Q14

Q15

Vcc+

Q13

30pF

Inverting

input

Offset

null 2

1kW

50kW

Offset

null 1

5kW

Q18

4.5kW

7.5kW

Q22

R11

50W

UA741 Absolute maximum ratings and operating conditions

Doc ID 5304 Rev 2 3/11

2 Absolute maximum ratings and operating conditions

Table 1. Absolute maximum ratings

Symbol Parameter Value Unit

VCC Supply voltage ±22 V

Vid Differential input voltage ±30 V

ViInput voltage ±15 V

Output short-circuit duration Infinite

Rthja

Thermal resistance junction to ambient

SO-8

DIP8

125

°C/W

Rthjc

Thermal resistance junction to case

SO-8

DIP8

°C/W

ESD

HBM: human body model(1)

DIP package

SO package

1. Human body model: a 100 pF capacitor is charged to the specified voltage, then discharged through a

1.5kΩ resistor between two pins of the device. This is done for all couples of connected pin combinations

while the other pins are floating.

500

400

MM: machine model(2)

2. Machine model: a 200 pF capacitor is charged to the specified voltage, then discharged directly between

two pins of the device with no external series resistor (internal resistor < 5 Ω). This is done for all couples of

connected pin combinations while the other pins are floating.

100 V

CDM: charged device model(3)

3. Charged device model: all pins and the package are charged together to the specified voltage and then

discharged directly to the ground through only one pin. This is done for all pins.

1.5 kV

Tstg Storage temperature range -65 to +150 °C

Table 2. Operating conditions

Symbol Parameter UA741I UA741C Unit

VCC Supply voltage 5 to 40 V

Vicm Common mode input voltage range ±12 V

Toper Operating free air temperature range -40 to +105 0 to +70 °C

Electrical characteristics UA741

4/11 Doc ID 5304 Rev 2

3 Electrical characteristics

Table 3. Electrical characteristics at VCC = ±15 V, Tamb = +25° C

(unless otherwise specified)

Symbol Parameter Min. Typ. Max. Unit

Vio

Input offset voltage (Rs ≤ 10 kΩ)

Tamb = +25° C

Tmin ≤ Tamb ≤ Tmax

Iio

Input offset current

Tamb = +25° C

Tmin ≤ Tamb ≤ Tmax

230

Iib

Input bias current

Tamb = +25° C

Tmin ≤ Tamb ≤ Tmax

10 100

200

Avd

Large signal voltage gain (Vo = ±10 V, RL = 2 kΩ)

Tamb = +25° C

Tmin ≤ Tamb ≤ Tmax

200 V/mV

SVR

Supply voltage rejection ratio (Rs ≤ 10 kΩ)

Tamb = +25° C

Tmin ≤ Tamb ≤ Tmax

90 dB

ICC

Supply current, no load

Tamb = +25° C

Tmin ≤ Tamb ≤ Tmax

1.7 2.8

3.3

Vicm

Input common mode voltage range

Tamb = +25° C

Tmin ≤ Tamb ≤ Tmax

±12

CMR

Common mode rejection ratio (RS ≤ 10 kΩ)

Tamb = +25° C

Tmin ≤ Tamb ≤ Tmax

90 dB

IOS Output short circuit current 10 25 40 mA

±Vopp

Output voltage swing

Tamb = +25° C RL = 10 kΩ

RL = 2 kΩ

Tmin ≤ Tamb ≤ Tmax RL = 10 kΩ

RL = 2 kΩ

13 V

SR Slew rate

Vi = ±10 V, RL = 2 kΩ, CL = 100 pF, unity gain 0.25 0.5 V/μs

Rise time

Vi = ±20 mV, RL = 2 kΩ, CL = 100 pF, unity gain 0.3 μs

Kov

Overshoot

Vi = 20 mV, RL = 2 kΩ, CL = 100 pF, unity gain 5 %

RiInput resistance 0.3 2 MΩ

UA741 Electrical characteristics

Doc ID 5304 Rev 2 5/11

GBP Gain bandwidth product

Vi = 10 mV, RL = 2 kΩ, CL = 100 pF, f =100 kHz 0.7 1 MHz

THD

Total harmonic distortion

f = 1 kHz, Av = 20 dB, RL = 2 kΩ, Vo = 2 Vpp, CL = 100 pF,

Tamb = +25° C 0.06

Equivalent input noise voltage

f = 1 kHz, Rs = 100 Ω23

∅m Phase margin 50 Degree

Table 3. Electrical characteristics at VCC = ±15 V, Tamb = +25° C

(unless otherwise specified) (continued)

Symbol Parameter Min. Typ. Max. Unit

------------

Package information UA741

6/11 Doc ID 5304 Rev 2

4 Package information

In order to meet environmental requirements, ST offers these devices in different grades of

ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®

specifications, grade definitions and product status are available at: www.st.com.

ECOPACK® is an ST trademark.

UA741 Package information

Doc ID 5304 Rev 2 7/11

4.1 DIP8 package information

Figure 2. DIP8 package mechanical drawing

Table 4. DIP8 package mechanical data

Ref.

Dimensions

Millimeters Inches

Min. Typ. Max. Min. Typ. Max.

A5.330.210

A1 0.38 0.015

A2 2.92 3.30 4.95 0.115 0.130 0.195

b 0.36 0.46 0.56 0.014 0.018 0.022

b2 1.14 1.52 1.78 0.045 0.060 0.070

c 0.20 0.25 0.36 0.008 0.010 0.014

D 9.02 9.27 10.16 0.355 0.365 0.400

E 7.62 7.87 8.26 0.300 0.310 0.325

E1 6.10 6.35 7.11 0.240 0.250 0.280

e 2.54 0.100

eA 7.62 0.300

eB 10.92 0.430

L 2.92 3.30 3.81 0.115 0.130 0.150

Package information UA741

8/11 Doc ID 5304 Rev 2

4.2 SO-8 package information

Figure 3. SO-8 package mechanical drawing

Table 5. SO-8 package mechanical data

Ref.

Dimensions

Millimeters Inches

Min. Typ. Max. Min. Typ. Max.

A1.750.069

A1 0.10 0.25 0.004 0.010

A2 1.25 0.049

b 0.28 0.48 0.011 0.019

c 0.17 0.23 0.007 0.010

D 4.80 4.90 5.00 0.189 0.193 0.197

E 5.80 6.00 6.20 0.228 0.236 0.244

E1 3.80 3.90 4.00 0.150 0.154 0.157

e 1.27 0.050

h 0.25 0.50 0.010 0.020

L 0.40 1.27 0.016 0.050

L1 1.04 0.040

k 0 8° 1° 8°

ccc 0.10 0.004

UA741 Ordering information

Doc ID 5304 Rev 2 9/11

5 Ordering information

Table 6. Order codes

Order code Temperature

range Package Packing Marking

UA741CN

0° C, +70° C

DIP8 Tube UA741CN

UA741CD/CDT SO-8 Tube or

tape & reel UA741C

UA741IN

-40° C, +105° C

DIP8 Tube UA741IN

UA741ID/IDT SO-8 Tube or tape &

reel UA741I

Revision history UA741

10/11 Doc ID 5304 Rev 2

6 Revision history

Table 7. Document revision history

Date Revision Changes

01-Nov-2001 1 Initial release.

25-May-2009 2

Document reformatted.

Added ESD values and thermal resistances in Table 1: Absolute

maximum ratings.

Added Table 2: Operating conditions.

Removed UA741M information and order code in Ta b l e 6 .

UA741

Doc ID 5304 Rev 2 11/11

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