May 2009 Doc ID 5304 Rev 2 1/11
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.
N
DIP8
(plastic package)
D
SO-8
(plastic micropackage)
1
2
3
4
8
6
5
7
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)
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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
R5
39kW
Q3 Q4
Q7
Q5 Q6 Q10 Q11
R1
1kW
R12
50kW
Vcc-
Q17
Q16
Q20
R10
50W
Output
R9
25W
Q14
Q15
Vcc+
Q13
C1
30pF
Inverting
input
Offset
null 2
R2
1kW
R3
50kW
Offset
null 1
R4
5kW
Q18
R7
4.5kW
R8
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
85
°C/W
Rthjc
Thermal resistance junction to case
SO-8
DIP8
40
41
°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
V
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
15
6
mV
Iio
Input offset current
Tamb = +25° C
Tmin ≤ Tamb ≤ Tmax
230
70
nA
Iib
Input bias current
Tamb = +25° C
Tmin ≤ Tamb ≤ Tmax
10 100
200
nA
Avd
Large signal voltage gain (Vo = ±10 V, RL = 2 kΩ)
Tamb = +25° C
Tmin ≤ Tamb ≤ Tmax
50
25
200 V/mV
SVR
Supply voltage rejection ratio (Rs ≤ 10 kΩ)
Tamb = +25° C
Tmin ≤ Tamb ≤ Tmax
77
77
90 dB
ICC
Supply current, no load
Tamb = +25° C
Tmin ≤ Tamb ≤ Tmax
1.7 2.8
3.3
mA
Vicm
Input common mode voltage range
Tamb = +25° C
Tmin ≤ Tamb ≤ Tmax
±12
±12
V
CMR
Common mode rejection ratio (RS ≤ 10 kΩ)
Tamb = +25° C
Tmin ≤ Tamb ≤ Tmax
70
70
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
12
10
12
10
14
13 V
SR Slew rate
Vi = ±10 V, RL = 2 kΩ, CL = 100 pF, unity gain 0.25 0.5 V/μs
tr
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
%
en
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
nV
Hz
------------
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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