µA741, µA741Y
GENERAL-PURPOSE OPERATIONAL AMPLIFIERS
SLOS094B – NOVEMBER 1970 – REVISED SEPTEMBER 2000
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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.
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
IN +
IN –
OUT
+
–
OFFSET N1
OFFSET N2
Copyright 2000, Texas Instruments Incorporated
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.
1
2
3
4
5
6
7
14
13
12
11
10
9
8
NC
NC
OFFSET N1
IN–
IN+
VCC–
NC
NC
NC
NC
VCC+
OUT
OFFSET N2
NC
µA741M ...J PACKAGE
(TOP VIEW)
1
2
3
4
8
7
6
5
OFFSET N1
IN–
IN+
VCC–
NC
VCC+
OUT
OFFSET N2
µA741M ...JG PACKAGE
µA741C, µA741I . . . D, P, OR PW PACKAGE
(TOP VIEW)
1
2
3
4
5
10
9
8
7
6
NC
OFFSET N1
IN–
IN+
VCC–
NC
NC
VCC+
OUT
OFFSET N2
µA741M ...U PACKAGE
(TOP VIEW)
3 2 1 20 19
910111213
4
5
6
7
8
18
17
16
15
14
NC
VCC+
NC
OUT
NC
NC
IN–
NC
IN+
NC
µA741M . . . FK PACKAGE
(TOP VIEW)
NC
OFFSET N1
NC
OFFSET N2
NC NC
NC
NC
V
NC
CC–
NC – No internal connection
µA741, µA741Y
GENERAL-PURPOSE OPERATIONAL AMPLIFIERS
SLOS094B – NOVEMBER 1970 – REVISED SEPTEMBER 2000
2POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
AVAILABLE OPTIONS
PACKAGED DEVICES
CHIP
TASMALL
OUTLINE
(D)
CHIP
CARRIER
(FK)
CERAMIC
DIP
(J)
CERAMIC
DIP
(JG)
PLASTIC
DIP
(P)
TSSOP
(PW)
FLAT
PACK
(U)
CHIP
FORM
(Y)
0°C to 70°CµA741CD µA741CP µA741CPW µA741Y
–40°C to 85°CµA741ID µA741IP
–55°C to 125°CµA741MFK µA741MJ µA741MJG µA741MU
The D package is available taped and reeled. Add the suffix R (e.g., µA741CDR).
schematic
IN–
IN+
VCC+
VCC–
OUT
OFFSET N1
OFFSET N2
Transistors 22
Resistors 11
Diode 1
Capacitor 1
Component Count
µA741, µA741Y
GENERAL-PURPOSE OPERATIONAL AMPLIFIERS
SLOS094B – NOVEMBER 1970 – REVISED SEPTEMBER 2000
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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
CHIP THICKNESS: 15 TYPICAL
BONDING PADS: 4 × 4 MINIMUM
TJmax = 150°C.
TOLERANCES ARE ±10%.
ALL DIMENSIONS ARE IN MILS.
+
–OUT
IN+
IN–
VCC+
(7)
(3)
(2) (6)
(4)
VCC–
(5)
(1)
OFFSET N2
OFFSET N1
45
36
(1)
(8)
(7) (6)
(5)
(4)
(3)(2)
µA741, µA741Y
GENERAL-PURPOSE OPERATIONAL AMPLIFIERS
SLOS094B – NOVEMBER 1970 – REVISED SEPTEMBER 2000
4POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
µA741C µA741I µA741M UNIT
Supply voltage, VCC+ (see Note 1) 18 22 22 V
Supply voltage, VCC– (see Note 1) –18 –22 –22 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 of fset null (either OFFSET N1 or OFFSET N2) and VCC– ±15 ±0.5 ±0.5 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, TA0 to 70 –40 to 85 –55 to 125 °C
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 af fect device reliability.
NOTES: 1. All voltage values, unless otherwise noted, are with respect to the midpoint between VCC+ and VCC–.
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.
DISSIPATION RATING TABLE
PACKAGE TA ≤ 25°C
POWER RATING DERATING
FACTOR DERATE
ABOVE TATA = 70°C
POWER RATING TA = 85°C
POWER RATING TA = 125°C
POWER RATING
D500 mW 5.8 mW/°C 64°C464 mW 377 mW N/A
FK 500 mW 11.0 mW/°C 105°C 500 mW 500 mW 275 mW
J500 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
P500 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
U500 mW 5.4 mW/°C 57°C432 mW 351 mW 135 mW
µA741, µA741Y
GENERAL-PURPOSE OPERATIONAL AMPLIFIERS
SLOS094B – NOVEMBER 1970 – REVISED SEPTEMBER 2000
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics at specified free-air temperature, VCC± = ±15 V (unless otherwise noted)
PARAMETER
TEST
TA†
µA741C µA741I, µA741M
UNIT
PARAMETER
CONDITIONS
T
A
†
MIN TYP MAX MIN TYP MAX
UNIT
VIO
In
p
ut offset voltage
VO=0
25°C 1 6 1 5
mV
V
IO
Inp
u
t
offset
v
oltage
V
O =
0
Full range 7.5 6
mV
∆VIO(adj) Offset voltage adjust range VO = 0 25°C±15 ±15 mV
IIO
In
p
ut offset current
VO=0
25°C 20 200 20 200
nA
I
IO
Inp
u
t
offset
c
u
rrent
V
O =
0
Full range 300 500
nA
IIB
In
p
ut bias current
VO=0
25°C 80 500 80 500
nA
I
IB
Inp
u
t
bias
c
u
rrent
V
O =
0
Full range 800 1500
nA
VICR
Common-mode input 25°C±12 ±13 ±12 ±13
V
V
ICR voltage range Full range ±12 ±12
V
RL = 10 kΩ25°C±12 ±14 ±12 ±14
VOM
Maximum peak output RL ≥ 10 kΩFull range ±12 ±12
V
V
OM voltage swing RL = 2 kΩ25°C±10 ±13 ±10 ±13
V
RL ≥ 2 kΩFull range ±10 ±10
AVD
Large-signal differential RL ≥ 2 kΩ25°C 20 200 50 200
V/mV
A
VD
gg
voltage amplification VO = ±10 V Full range 15 25
V/mV
riInput resistance 25°C 0.3 2 0.3 2 MΩ
roOutput resistance VO = 0, See Note 5 25°C 75 75 Ω
CiInput capacitance 25°C 1.4 1.4 pF
CMRR
Common-mode rejection
VIC =V
ICRmin
25°C 70 90 70 90
dB
CMRR
j
ratio
V
IC =
V
ICR
min
Full range 70 70
dB
kSVS
Supply voltage sensitivity
VCC =±9Vto±15 V
25°C 30 150 30 150
µV/V
k
SVS
yg y
(∆VIO/∆VCC)
V
CC =
±9
V
to
±15
V
Full range 150 150 µ
V/V
IOS Short-circuit output current 25°C±25 ±40 ±25 ±40 mA
ICC
Su
pp
ly current
VO=0
No load
25°C 1.7 2.8 1.7 2.8
mA
I
CC
S
u
ppl
y
c
u
rrent
V
O =
0
,
No
load
Full range 3.3 3.3
mA
PD
Total
p
ower dissi
p
ation
VO=0
No load
25°C 50 85 50 85
mW
P
D
Total
po
w
er
dissipation
V
O =
0
,
No
load
Full range 100 100
mW
†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.
operating characteristics, VCC± = ±15 V, TA = 25°C
PARAMETER
TEST CONDITIONS
µA741C µA741I, µA741M
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP MAX MIN TYP MAX
UNIT
trRise time V
I
= 20 mV, R
L
= 2 kΩ, 0.3 0.3 µs
Overshoot factor
I,
CL = 100 pF,
L,
See Figure 1 5% 5%
SR Slew rate at unity gain VI = 10 V,
CL = 100 pF, RL = 2 kΩ,
See Figure 1 0.5 0.5 V/µs
µA741, µA741Y
GENERAL-PURPOSE OPERATIONAL AMPLIFIERS
SLOS094B – NOVEMBER 1970 – REVISED SEPTEMBER 2000
6POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics at specified free-air temperature, VCC±=±15 V, TA = 25°C (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
µA741Y
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP MAX
UNIT
VIO Input offset voltage VO = 0 1 6 mV
∆VIO(adj) Offset voltage adjust range VO = 0 ±15 mV
IIO Input offset current VO = 0 20 200 nA
IIB Input bias current VO = 0 80 500 nA
VICR Common-mode input voltage range ±12 ±13 V
VOM
Maximum
p
eak out
p
ut voltage swing
RL = 10 kΩ±12 ±14
V
V
OM
Ma
x
im
u
m
peak
o
u
tp
u
t
v
oltage
s
w
ing
RL = 2 kΩ±10 ±13
V
AVD Large-signal differential voltage amplification RL ≥ 2 kΩ20 200 V/mV
riInput resistance 0.3 2 MΩ
roOutput resistance VO = 0, See Note 5 75 Ω
CiInput capacitance 1.4 pF
CMRR Common-mode rejection ratio VIC = VICRmin 70 90 dB
kSVS Supply voltage sensitivity (∆VIO/∆VCC) VCC = ±9 V to ±15 V 30 150 µV/V
IOS Short-circuit output current ±25 ±40 mA
ICC Supply current VO = 0, No load 1.7 2.8 mA
PDTotal power dissipation VO = 0, No load 50 85 mW
†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.
operating characteristics, VCC± = ±15 V, TA = 25°C
PARAMETER
TEST CONDITIONS
µA741Y
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP MAX
UNIT
trRise time V
I
= 20 mV, R
L
= 2 kΩ, 0.3 µs
Overshoot factor
I,
CL = 100 pF,
L,
See Figure 1 5%
SR Slew rate at unity gain VI = 10 V,
CL = 100 pF, RL = 2 kΩ,
See Figure 1 0.5 V/µs
µA741, µA741Y
GENERAL-PURPOSE OPERATIONAL AMPLIFIERS
SLOS094B – NOVEMBER 1970 – REVISED SEPTEMBER 2000
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
INPUT VOLTAGE
WAVEFDORM
TEST CIRCUIT
RL = 2 kΩ
CL = 100 pF
OUT
IN +
–
0 V
VI
Figure 1. Rise Time, Overshoot, and Slew Rate
APPLICATION INFORMATION
Figure 2 shows a diagram for an input offset voltage null circuit.
To VCC–
OFFSET N1
10 kΩ
OFFSET N2
+
–
OUT
IN+
IN–
Figure 2. Input Offset Voltage Null Circuit
µA741, µA741Y
GENERAL-PURPOSE OPERATIONAL AMPLIFIERS
SLOS094B – NOVEMBER 1970 – REVISED SEPTEMBER 2000
8POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS†
Figure 3
I
TA – Free-Air Temperature – °C
12080400–40
20
INPUT OFFSET CURRENT
vs
FREE-AIR TEMPERATURE
IO – Input Offset Current – nA
ÏÏÏÏÏ
ÏÏÏÏÏ
VCC– = –15 V
ÏÏÏÏÏ
ÏÏÏÏÏ
VCC+ = 15 V
90
70
50
30
10
0
40
60
80
100
–60 –20 20 60 100 140
Figure 4
400
300
200
100
00 40 80 120
TA – Free-Air Temperature – °C
I
INPUT BIAS CURRENT
vs
FREE-AIR TEMPERATURE
IB – Input Bias Current – nA
ÏÏÏÏÏ
ÏÏÏÏÏ
VCC– = –15 V
ÏÏÏÏÏ
VCC+ = 15 V
350
250
150
50
–40–60 –20 20 60 100 140
V
RL – Load Resistance – kΩ1074210.70.40.20.1
±4
±5
±6
±7
±8
±9
±10
±11
±12
±13
±14
MAXIMUM PEAK OUTPUT VOLTAGE
vs
LOAD RESISTANCE
VCC+ = 15 V
VCC– = –15 V
TA = 25°C
OM – Maximum Peak Output Voltage – V
Figure 5
†Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.
µA741, µA741Y
GENERAL-PURPOSE OPERATIONAL AMPLIFIERS
SLOS094B – NOVEMBER 1970 – REVISED SEPTEMBER 2000
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 6
V
±20
f – Frequency – Hz
1M100k10k1k
MAXIMUM PEAK OUTPUT VOLTAGE
vs
FREQUENCY
OM – Maximum Peak Output Voltage – V
±18
±16
±14
±12
±10
±8
±6
±4
±2
0
VCC+ = 15 V
VCC– = –15 V
RL = 10 kΩ
TA = 25°C
100
Figure 7
2018161412108642
400
200
100
40
20
10 0
VCC±– Supply Voltage – V
OPEN-LOOP SIGNAL DIFFERENTIAL
VOLTAGE AMPLIFICATION
vs
SUPPLY VOLTAGE
VO = ±10 V
RL = 2 kΩ
TA = 25°C
AVD– Open-Loop Signal Differential
Voltage Amplification – V/mV
f – Frequency – Hz
10M1M10k1001
–10
0
10
20
70
80
90
100
110
OPEN-LOOP LARGE-SIGNAL DIFFERENTIAL
VOLTAGE AMPLIFICATION
vs
FREQUENCY
VO = ±10 V
RL = 2 kΩ
TA = 25°C
AVD– Open-Loop Signal Differential
Voltage Amplification – dB
10 1k 100k
60
50
30
40
VCC+ = 15 V
VCC– = –15 V
µA741, µA741Y
GENERAL-PURPOSE OPERATIONAL AMPLIFIERS
SLOS094B – NOVEMBER 1970 – REVISED SEPTEMBER 2000
10 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 8
CMRR – Common-Mode Rejection Ratio – dB
f – Frequency – Hz
10k 1M 100M1001
0
10
20
30
40
50
60
70
80
90
100
COMMON-MODE REJECTION RATIO
vs
FREQUENCY
VCC+ = 15 V
VCC– = –15 V
BS = 10 kΩ
TA = 25°C
Figure 9
10%
tr
2.521.510.50
28
24
20
16
12
8
4
0
– Output Voltage – mV
t – Time − µs
–4
OUTPUT VOLTAGE
vs
ELAPSED TIME
VO
ÏÏ
90%
VCC+ = 15 V
VCC– = –15 V
RL = 2 kΩ
CL = 100 pF
TA = 25°C
8
6
4
2
0
–2
–4
–6
9080706050403020100
Input and Output Voltage – V
t – Time – µs
–8
VOLTAGE-FOLLOWER
LARGE-SIGNAL PULSE RESPONSE
VO
VI
VCC+ = 15 V
VCC– = –15 V
RL = 2 kΩ
CL = 100 pF
TA = 25°C
Figure 10
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pertaining to warranty, patent infringement, and limitation of liability.
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accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty . Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
Customers are responsible for their applications using TI components.
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Copyright 2000, Texas Instruments Incorporated
