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
UA741
N
DIP8
(plastic package)
D
SO-8
(plastic micropackage)
Pin connections
(top view)
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 closedloop circuits.
1
2
3
4
8
7
6
5
1 - Offset null 1
2 - Inverting input
3 - Non-inverting input
4 - V
CC
-
5 - Offset null 2
6 - Output
7 - V
CC
+
8 - N.C.
May 2009 Doc ID 5304 Rev 2 1/11
www.st.com
11
Schematic diagram UA741
1 Schematic diagram
Figure 1. Schematic diagram
Non-Inverting input
Vcc+
Offset
null 2
Offset
R2
1kW
input
null 1
Q12
Q9
C1
30pF
R5
39kW
Q11
Q10
Q22
R4
5kW
R12
50kW
R7
4.5kW
R8
7.5kW
Q13
Q14
Q18
Q16
Q17
Q15
R9
25W
Output
R10
50W
Q20
R11
50W
Vcc-
Q8
Inverting
Q1
Q2
Q3
Q4
Q7
Q5
Q6
R3
50kW
R1
1kW
2/11 Doc ID 5304 Rev 2
UA741 Absolute maximum ratings and operating conditions
2 Absolute maximum ratings and operating conditions
Table 1. Absolute maximum ratings
Symbol Parameter Value Unit
V
CC
V
V
Supply voltage ±22 V
Differential input voltage ±30 V
id
Input voltage ±15 V
i
Output short-circuit duration Infinite
Thermal resistance junction to ambient
R
thja
SO-8
DIP8
125
85
°C/W
Thermal resistance junction to case
R
thjc
ESD
T
stg
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.
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.
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.
Table 2. Operating conditions
SO-8
DIP8
HBM: human body model
(1)
DIP package
SO package
MM: machine model
(2)
CDM: charged device model
(3)
40
°C/W
41
500
400
100 V
1.5 kV
Storage temperature range -65 to +150 °C
V
Symbol Parameter UA741I UA741C Unit
V
CC
V
icm
T
oper
Supply voltage 5 to 40 V
Common mode input voltage range ±12 V
Operating free air temperature range -40 to +105 0 to +70 °C
Doc ID 5304 Rev 2 3/11
Electrical characteristics UA741
3 Electrical characteristics
Table 3. Electrical characteristics at VCC = ±15 V, T
= +25° C
amb
(unless otherwise specified)
Symbol Parameter Min. Typ. Max. Unit
Input offset voltage (Rs ≤ 10 kΩ)
V
I
io
I
ib
A
vd
SVR
I
CC
V
icm
CMR
I
OS
±V
opp
SR
t
io
r
T
T
amb
min
= +25° C
≤ T
≤ T
amb
max
15
6
Input offset current
T
T
amb
min
= +25° C
≤ T
≤ T
amb
max
230
70
Input bias current
T
T
amb
min
= +25° C
≤ T
≤ T
amb
max
10 100
200
Large signal voltage gain (Vo = ±10 V, RL = 2 kΩ)
T
= +25° C
amb
≤ T
amb
≤ T
max
T
min
Supply voltage rejection ratio (R
= +25° C
T
amb
T
≤ T
amb
≤ T
max
min
≤ 10 kΩ)
s
50
25
77
77
200
90
Supply current, no load
T
T
amb
min
≤ T
= +25° C
≤ T
amb
max
1.7 2.8
3.3
Input common mode voltage range
T
= +25° C
amb
≤ T
amb
≤ T
max
T
min
Common mode rejection ratio (R
= +25° C
T
amb
T
≤ T
amb
≤ T
max
min
≤ 10 kΩ)
S
±12
±12
70
70
90
Output short circuit current 10 25 40 mA
Output voltage swing
T
= +25° C RL = 10 kΩ
amb
R
T
≤ T
≤ T
min
amb
RL = 10 kΩ
max
R
= 2 kΩ
L
= 2 kΩ
L
12
10
12
10
14
13
Slew rate
= ±10 V, RL = 2 kΩ, CL = 100 pF, unity gain 0.25 0.5
V
i
Rise time
Vi = ±20 mV, RL = 2 kΩ, CL = 100 pF, unity gain 0.3
mV
nA
nA
V/mV
dB
mA
V
dB
V
V/μs
μs
K
Overshoot
ov
R
i
Vi = 20 mV, RL = 2 kΩ, CL = 100 pF, unity gain 5
Input resistance 0.3 2 MΩ
4/11 Doc ID 5304 Rev 2
%
UA741 Electrical characteristics
Table 3. Electrical characteristics at VCC = ±15 V, T
= +25° C
amb
(unless otherwise specified) (continued)
Symbol Parameter Min. Typ. Max. Unit
GBP
THD
∅m Phase margin 50 Degree
Gain bandwidth product
Vi = 10 mV, RL = 2 kΩ, CL = 100 pF, f =100 kHz 0.7 1
Total harmonic distortion
f = 1 kHz, A
T
= +25° C
amb
Equivalent input noise voltage
e
n
f = 1 kHz, Rs = 100 Ω
= 20 dB, RL = 2 kΩ, Vo = 2 Vpp, CL = 100 pF,
v
0.06
23
MHz
%
nV
-----------Hz
Doc ID 5304 Rev 2 5/11
Package information UA741
4 Package information
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK
®
packages, depending on their level of environmental compliance. ECOPACK®
®
is an ST trademark.
6/11 Doc ID 5304 Rev 2
UA741 Package information
4.1 DIP8 package information
Figure 2. DIP8 package mechanical drawing
Table 4. DIP8 package mechanical data
Dimensions
Ref.
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
Millimeters Inches
Doc ID 5304 Rev 2 7/11
Package information UA741
4.2 SO-8 package information
Figure 3. SO-8 package mechanical drawing
Table 5. SO-8 package mechanical data
Dimensions
Ref.
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°
Millimeters Inches
ccc 0.10 0.004
8/11 Doc ID 5304 Rev 2
UA741 Ordering information
5 Ordering information
Table 6. Order codes
Order code
UA741CN
Temperature
range
Package Packing Marking
DIP8 Tube UA741CN
0° C, +70° C
UA741CD/CDT SO-8
UA741IN
DIP8 Tube UA741IN
-40° C, +105° C
UA741ID/IDT SO-8
Tube or
tape & reel
Tube or tape &
reel
UA741C
UA741I
Doc ID 5304 Rev 2 9/11
Revision history UA741
6 Revision history
Table 7. Document revision history
Date Revision Changes
01-Nov-2001 1 Initial release.
Document reformatted.
Added ESD values and thermal resistances in Table 1: Absolute
25-May-2009 2
maximum ratings.
Added Table 2: Operating conditions.
Removed UA741M information and order code in Ta b le 6 .
10/11 Doc ID 5304 Rev 2
UA741
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