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LM124-N, LM224-N
LM2902-N, LM324-N
SNOSC16D – MARCH 2000 – REVISED JANUARY 2015
LMx24-N, LM2902-N Low-Power, Quad-Operational Amplifiers
1 Features
3 Description
•
•
•
The LM124-N series consists of four independent,
high-gain,
internally
frequency
compensated
operational amplifiers designed to operate from a
single power supply over a wide range of voltages.
Operation from split-power supplies is also possible
and the low-power supply current drain is
independent of the magnitude of the power supply
voltage.
1
•
•
•
•
•
•
•
•
Internally Frequency Compensated for Unity Gain
Large DC Voltage Gain 100 dB
Wide Bandwidth (Unity Gain) 1 MHz
(Temperature Compensated)
Wide Power Supply Range:
– Single Supply 3 V to 32 V
– or Dual Supplies ±1.5 V to ±16 V
Very Low Supply Current Drain (700 μA)
—Essentially Independent of Supply Voltage
Low Input Biasing Current 45 nA
(Temperature Compensated)
Low Input Offset Voltage 2 mV
and Offset Current: 5 nA
Input Common-Mode Voltage Range Includes
Ground
Differential Input Voltage Range Equal to the
Power Supply Voltage
Large Output Voltage Swing 0 V to V+ − 1.5 V
Advantages:
– Eliminates Need for Dual Supplies
– Four Internally Compensated Op Amps in a
Single Package
– Allows Direct Sensing Near GND and VOUT
also Goes to GND
– Compatible With All Forms of Logic
– Power Drain Suitable for Battery Operation
– In the Linear Mode the Input Common-Mode,
Voltage Range Includes Ground and the
Output Voltage
– Can Swing to Ground, Even Though Operated
from Only a Single Power Supply Voltage
– Unity Gain Cross Frequency is Temperature
Compensated
– Input Bias Current is Also Temperature
Compensated
Application areas include transducer amplifiers, DC
gain blocks and all the conventional op amp circuits
which now can be more easily implemented in single
power supply systems. For example, the LM124-N
series can directly operate off of the standard 5-V
power supply voltage which is used in digital systems
and easily provides the required interface electronics
without requiring the additional ±15 V power supplies.
Device Information(1)
PART NUMBER
LM124-N
LM224-N
LM324-N
LM2902-N
PACKAGE
BODY SIZE (NOM)
CDIP (14)
19.56 mm × 6.67 mm
CDIP (14)
19.56 mm × 6.67 mm
PDIP (14)
19.177 mm × 6.35 mm
SOIC (14)
8.65 mm × 3.91 mm
TSSOP (14)
5.00 mm × 4.40 mm
PDIP (14)
19.177 mm × 6.35 mm
SOIC (14)
8.65 mm × 3.91 mm
TSSOP (14)
5.00 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Schematic Diagram
2 Applications
•
•
•
Transducer Amplifiers
DC Gain Blocks
Conventional Op Amp Circuits
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
LM124-N, LM224-N
LM2902-N, LM324-N
SNOSC16D – MARCH 2000 – REVISED JANUARY 2015
www.ti.com
Table of Contents
1
2
3
4
5
6
Features ..................................................................
Applications ...........................................................
Description .............................................................
Revision History.....................................................
Pin Configuration and Functions .........................
Specifications.........................................................
1
1
1
2
3
4
6.1
6.2
6.3
6.4
6.5
6.6
4
4
4
5
5
Absolute Maximum Ratings ......................................
ESD Ratings..............................................................
Recommended Operating Conditions.......................
Thermal Information ..................................................
Electrical Characteristics: LM124A/224A/324A ........
Electrical Characteristics: LM124-N/224-N/324N/2902-N ...................................................................
6.7 Typical Characteristics ..............................................
7
6
8
Detailed Description ............................................ 11
7.1 Overview ................................................................. 11
7.2 Functional Block Diagram ....................................... 11
7.3 Feature Description................................................. 11
7.4 Device Functional Modes........................................ 11
8
Application and Implementation ........................ 13
8.1 Application Information............................................ 13
8.2 Typical Applications ............................................... 13
9 Power Supply Recommendations...................... 23
10 Layout................................................................... 23
10.1 Layout Guidelines ................................................. 23
10.2 Layout Example .................................................... 23
11 Device and Documentation Support ................. 24
11.1
11.2
11.3
11.4
Related Links ........................................................
Trademarks ...........................................................
Electrostatic Discharge Caution ............................
Glossary ................................................................
24
24
24
24
12 Mechanical, Packaging, and Orderable
Information ........................................................... 24
4 Revision History
Changes from Revision C (November 2012) to Revision D
•
2
Page
Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional
Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device
and Documentation Support section, and Mechanical, Packaging, and Orderable Information section ............................... 1
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SNOSC16D – MARCH 2000 – REVISED JANUARY 2015
5 Pin Configuration and Functions
J Package
14-Pin CDIP
Top View
D Package
14-Pin SOIC
Top View
Pin Functions
PIN
NAME
NO.
TYPE
DESCRIPTION
OUTPUT1
1
O
Output, Channel 1
INPUT1-
2
I
Inverting Input, Channel 1
INPUT1+
3
I
Noninverting Input, Channel 1
V+
4
P
Positive Supply Voltage
INPUT2+
5
I
Nonnverting Input, Channel 2
INPUT2-
6
I
Inverting Input, Channel 2
OUTPUT2
7
O
Output, Channel 2
OUTPUT3
8
O
Output, Channel 3
INPUT3-
9
I
Inverting Input, Channel 3
INPUT3+
10
I
Noninverting Input, Channel 3
GND
11
P
Ground or Negative Supply Voltage
INPUT4+
12
I
Noninverting Input, Channel 4
INPUT4-
13
I
Inverting Input, Channel 4
OUTPUT4
14
O
Output, Channel 4
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LM2902-N, LM324-N
SNOSC16D – MARCH 2000 – REVISED JANUARY 2015
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6 Specifications
6.1 Absolute Maximum Ratings
See
(1) (2)
.
LM124-N/LM224-N/LM324-N
LM124A/LM224A/LM324A
MIN
LM2902-N
MAX
UNIT
Supply Voltage, V+
MAX
32
26
V
Differential Input Voltage
32
26
V
−0.3
Input Voltage
26
V
50
50
mA
PDIP
1130
1130
mW
CDIP
1260
1260
mW
SOIC Package
800
800
mW
Output Short-Circuit to GND
(One Amplifier) (5)
+
V ≤ 15 V and TA = 25°C
Continuous
Lead Temperature (Soldering, 10 seconds)
Soldering
Information
(3)
(4)
(5)
Continuous
260
260
°C
Dual-In-Line Soldering (10 seconds)
Package
260
260
°C
Small
Outline
Package
Vapor Phase (60 seconds)
215
215
°C
Infrared (15 seconds)
220
220
°C
150
°C
Storage temperature, Tstg
(1)
(2)
−0.3
32
Input Current (VIN < −0.3 V) (3)
Power
Dissipation (4)
MIN
–65
150
–65
Refer to RETS124AX for LM124A military specifications and refer to RETS124X for LM124-N military specifications.
If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and
specifications.
This input current will only exist when the voltage at any of the input leads is driven negative. It is due to the collector-base junction of
the input PNP transistors becoming forward biased and thereby acting as input diode clamps. In addition to this diode action, there is
also lateral NPN parasitic transistor action on the IC chip. This transistor action can cause the output voltages of the op amps to go to
the V+voltage level (or to ground for a large overdrive) for the time duration that an input is driven negative. This is not destructive and
normal output states will re-establish when the input voltage, which was negative, again returns to a value greater than −0.3 V (at 25°C).
For operating at high temperatures, the LM324-N/LM324A/LM2902-N must be derated based on a 125°C maximum junction
temperature and a thermal resistance of 88°C/W which applies for the device soldered in a printed circuit board, operating in a still air
ambient. The LM224-N/LM224A and LM124-N/LM124A can be derated based on a 150°C maximum junction temperature. The
dissipation is the total of all four amplifiers—use external resistors, where possible, to allow the amplifier to saturate of to reduce the
power which is dissipated in the integrated circuit.
Short circuits from the output to V+ can cause excessive heating and eventual destruction. When considering short circuits to ground,
the maximum output current is approximately 40 mA independent of the magnitude of V+. At values of supply voltage in excess of 15 V,
continuous short-circuits can exceed the power dissipation ratings and cause eventual destruction. Destructive dissipation can result
from simultaneous shorts on all amplifiers.
6.2 ESD Ratings
V(ESD)
(1)
Electrostatic discharge
Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001 (1)
VALUE
UNIT
±250
V
JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
6.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
MIN
MAX
Supply Voltage (V+ - V-): LM124-N/LM124A/LM224-N/LM224A/LM324-N/LM324A
3
32
V
Supply Voltage (V+ - V-): LM2902-N
3
26
V
Operating Input Voltage on Input pins
UNIT
0
V+
V
Operating junction temperature, TJ: LM124-N/LM124A
-55
125
°C
Operating junction temperature, TJ: L2902-N
-40
85
°C
Operating junction temperature, TJ: LM224-N/LM224A
-25
85
°C
Operating junction temperature, TJ: LM324-N/LM324A
0
70
°C
4
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SNOSC16D – MARCH 2000 – REVISED JANUARY 2015
6.4 Thermal Information
THERMAL METRIC
RθJA
(1)
(1)
LM124-N /
LM224-N
LM324-N /
LM2902-N
J/CDIP
D/SOIC
14 PINS
14 PINS
88
88
Junction-to-ambient thermal resistance
UNIT
°C/W
For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
6.5 Electrical Characteristics: LM124A/224A/324A
V+ = 5.0 V,
(1)
, unless otherwise stated
PARAMETER
TEST CONDITIONS
LM124A
MIN
LM224A
TYP
MAX
MIN
LM324A
TYP
MAX
MIN
TYP
MAX
UNIT
Input Offset Voltage
TA = 25°C (2)
1
2
1
3
2
3
mV
Input Bias Current (3)
IIN(+) or IIN(−), VCM = 0 V,
TA = 25°C
20
50
40
80
45
100
nA
Input Offset Current
IIN(+) or IIN(−), VCM = 0 V,
TA = 25°C
2
10
2
15
5
30
nA
Input Common-Mode
Voltage Range (4)
V+ = 30 V, (LM2902-N,
V+ = 26 V), TA = 25°C
V+−1.5
V
Supply Current
Over Full Temperature Range,
RL = ∞ On All Op Amps
V+ = 30 V (LM2902-N V+ = 26 V)
V+−1.5
0
1.5
V+−1.5
0
3
1.5
0
3
1.5
3
mA
+
0.7
V =5V
1.2
0.7
1.2
0.7
1.2
Large Signal
Voltage Gain
V+ = 15 V, RL≥ 2 kΩ,
(VO = 1 V to 11 V), TA = 25°C
50
100
50
100
25
100
V/mV
Common-Mode
Rejection Ratio
DC, VCM = 0 V to V+ − 1.5 V,
TA = 25°C
70
85
70
85
65
85
dB
Power Supply
Rejection Ratio
V+ = 5 V to 30 V, (LM2902-N,
V+ = 5V to 26 V),
TA = 25°C
65
100
65
100
65
100
dB
Amplifier-to-Amplifier
Coupling (5)
f = 1 kHz to 20 kHz, TA = 25°C,
(Input Referred)
−120
dB
mA
Source
Output
Current
Sink
20
40
20
40
20
40
VIN− = 1 V, VIN+ = 0 V,
V+ = 15 V, VO = 2 V, TA = 25°C
10
20
10
20
10
20
VIN− = 1 V, VIN+ = 0 V,
V+ = 15 V, VO = 200 mV, TA = 25°C
12
50
12
50
12
50
V+ = 15 V,
TA = 25°C (6)
Input Offset Voltage
See (2)
VOS Drift
RS = 0 Ω
Input Offset Current
IIN(+) − IIN(−), VCM = 0 V
(2)
(3)
(4)
(5)
(6)
−120
VIN+ = 1 V, VIN− = 0 V,
V+ = 15 V, VO = 2 V, TA = 25°C
Short Circuit to Ground
(1)
−120
μA
40
60
7
20
40
60
7
20
4
40
60
5
mV
7
30
μV/°C
75
nA
4
30
30
mA
These specifications are limited to −55°C ≤ TA ≤ +125°C for the LM124-N/LM124A. With the LM224-N/LM224A, all temperature
specifications are limited to −25°C ≤ TA ≤ +85°C, the LM324-N/LM324A temperature specifications are limited to 0°C ≤ TA ≤ +70°C, and
the LM2902-N specifications are limited to −40°C ≤ TA ≤ +85°C.
VO ≃ 1.4V, RS = 0 Ω with V+ from 5 V to 30 V; and over the full input common-mode range (0 V to V+ − 1.5 V) for LM2902-N, V+ from 5
V to 26 V.
The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant, independent of the
state of the output so no loading change exists on the input lines.
The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3 V (at 25°C). The
upper end of the common-mode voltage range is V+ − 1.5 V (at 25°C), but either or both inputs can go to 32 V without damage (26 V for
LM2902-N), independent of the magnitude of V+.
Due to proximity of external components, insure that coupling is not originating via stray capacitance between these external parts. This
typically can be detected as this type of capacitance increases at higher frequencies.
Short circuits from the output to V+ can cause excessive heating and eventual destruction. When considering short circuits to ground,
the maximum output current is approximately 40 mA independent of the magnitude of V+. At values of supply voltage in excess of 15 V,
continuous short-circuits can exceed the power dissipation ratings and cause eventual destruction. Destructive dissipation can result
from simultaneous shorts on all amplifiers.
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Electrical Characteristics: LM124A/224A/324A (continued)
V+ = 5.0 V, (1), unless otherwise stated
PARAMETER
TEST CONDITIONS
LM124A
MIN
LM224A
TYP
MAX
MIN
LM324A
TYP
MAX
MIN
TYP
MAX
UNIT
IOS Drift
RS = 0 Ω
10
200
10
200
10
300
pA/°C
Input Bias Current
IIN(+) or IIN(−)
40
100
40
100
40
200
nA
V+−2
V
Input Common-Mode
Voltage Range (4)
V = 30 V,
(LM2902-N, V+ = 26 V)
V+−2
0
V+−2
0
0
+
Large Signal
Voltage Gain
Output
Voltage
Swing
+
V = 15 V (VOSwing = 1 V to 11 V),
RL ≥ 2 kΩ
25
V+ = 30 V
(LM2902-N,
V+ = 26 V)
RL = 2 kΩ
26
VOH
RL = 10 kΩ
27
VOL
V+ = 5 V, RL = 10 kΩ
VIN+ = +1V,
VIN− = 0V,
V+ = 15V
Source
Output
Current
VO = 2 V
VIN− = +1V,
VIN+ = 0V,
V+ = 15V
Sink
25
15
26
28
5
V/mV
26
27
28
20
27
5
V
28
20
5
10
20
10
20
10
20
10
15
5
8
5
8
20
mV
mA
6.6 Electrical Characteristics: LM124-N/224-N/324-N/2902-N
V+ = +5.0V,
(1)
, unless otherwise stated
PARAMETER
Input Offset Voltage
TEST CONDITIONS
LM124-N / LM224-N
MIN
TA = 25°C (2)
TYP
MAX
LM324-N
MIN
TYP
LM2902-N
MAX
MIN
TYP
MAX
UNIT
2
5
2
7
2
7
mV
IIN(+) or IIN(−), VCM = 0 V, TA = 25°C
45
150
45
250
45
250
nA
Input Offset Current
IIN(+) or IIN(−), VCM = 0 V, TA = 25°C
3
30
5
50
5
50
nA
Input Common-Mode Voltage
Range (4)
V+ = 30 V, (LM2902-N, V+ = 26V),
TA = 25°C
V+−1.
5
V
Supply Current
Over Full Temperature Range
RL = ∞ On All Op Amps,
V+ = 30 V (LM2902-N V+ = 26 V)
Input Bias Current
(3)
V+−1.
5
0
1.5
V+−1.
5
0
3
1.5
0
3
1.5
3
mA
+
0.7
V =5V
1.2
0.7
1.2
0.7
1.2
Large Signal Voltage Gain
V+ = 15V, RL≥ 2 kΩ,
(VO = 1 V to 11 V), TA = 25°C
50
100
25
100
25
100
V/mV
Common-Mode Rejection
Ratio
DC, VCM = 0 V to V+ − 1.5 V, TA = 25°C
70
85
65
85
50
70
dB
Power Supply Rejection Ratio
V+ = 5 V to 30 V (LM2902-N,
V+ = 5 V to 26 V), TA = 25°C
65
100
65
100
50
100
dB
Amplifier-to-Amplifier
Coupling (5)
f = 1 kHz to 20 kHz, TA = 25°C
(Input Referred)
−120
dB
(1)
(2)
(3)
(4)
(5)
6
−120
−120
These specifications are limited to −55°C ≤ TA ≤ +125°C for the LM124-N/LM124A. With the LM224-N/LM224A, all temperature
specifications are limited to −25°C ≤ TA ≤ +85°C, the LM324-N/LM324A temperature specifications are limited to 0°C ≤ TA ≤ +70°C, and
the LM2902-N specifications are limited to −40°C ≤ TA ≤ +85°C.
VO ≃ 1.4V, RS = 0 Ω with V+ from 5 V to 30 V; and over the full input common-mode range (0 V to V+ − 1.5 V) for LM2902-N, V+ from 5
V to 26 V.
The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant, independent of the
state of the output so no loading change exists on the input lines.
The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3 V (at 25°C). The
upper end of the common-mode voltage range is V+ − 1.5 V (at 25°C), but either or both inputs can go to 32 V without damage (26 V for
LM2902-N), independent of the magnitude of V+.
Due to proximity of external components, insure that coupling is not originating via stray capacitance between these external parts. This
typically can be detected as this type of capacitance increases at higher frequencies.
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Electrical Characteristics: LM124-N/224-N/324-N/2902-N (continued)
V+ = +5.0V,
(1)
, unless otherwise stated
PARAMETER
TEST CONDITIONS
Source
Output
Current
Sink
LM124-N / LM224-N
MIN
TYP
VIN+ = 1 V, VIN− = 0 V,
V+ = 15 V, VO = 2 V, TA = 25°C
20
VIN− = 1 V, VIN+ = 0 V,
V+ = 15 V, VO = 2 V, TA = 25°C
VIN− = 1 V, VIN+ = 0 V,
V+ = 15 V, VO = 200 mV, TA = 25°C
+
TYP
40
20
10
20
12
50
Short Circuit to Ground
V = 15 V, TA = 25°C
Input Offset Voltage
See
VOS Drift
RS = 0 Ω
Input Offset Current
IIN(+) − IIN(−), VCM = 0 V
IOS Drift
RS = 0 Ω
10
Input Bias Current
IIN(+) or IIN(−)
40
Input Common-Mode Voltage
Range (4)
V+ = 30 V, (LM2902-N, V+ = 26 V)
0
Large Signal Voltage Gain
V+ = 15 V (VOSwing = 1V to 11V),
RL ≥ 2 kΩ
25
Output
Voltage
Swing
40
20
40
mA
10
20
10
20
mA
12
50
12
50
µA
60
40
VOL
V+ = 5 V, RL = 10 kΩ
26
RL = 10 kΩ
27
VO = 2 V
Sink
40
150
40
45
500
15
27
20
200
0
5
23
20
nA
500
nA
V+−2
V
V/mV
22
28
mV
pA/°C
15
26
28
40
mA
µV/°C
10
V+−2
0
60
7
10
300
MAX
10
7
V+−2
5
VIN+
VIN−
+
60
9
100
RL = 2 kΩ
MAX
UNIT
TYP
7
V+ = 30 V (LM2902-N,
V+ = 26 V)
LM2902-N
MIN
7
Output
Current
(6)
40
(2)
VOH
Source
LM324-N
MIN
(6)
MAX
V
24
5
100
mV
= 1 V,
= 0 V,
V = 15 V
10
20
10
20
10
20
mA
VIN− = 1 V,
VIN+ = 0 V,
V+ = 15 V
5
8
5
8
5
8
mA
Short circuits from the output to V+ can cause excessive heating and eventual destruction. When considering short circuits to ground,
the maximum output current is approximately 40 mA independent of the magnitude of V+. At values of supply voltage in excess of 15 V,
continuous short-circuits can exceed the power dissipation ratings and cause eventual destruction. Destructive dissipation can result
from simultaneous shorts on all amplifiers.
Copyright © 2000–2015, Texas Instruments Incorporated
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6.7 Typical Characteristics
8
Figure 1. Input Voltage Range
Figure 2. Input Current
Figure 3. Supply Current
Figure 4. Voltage Gain
Figure 5. Open-Loop Frequency Response
Figure 6. Common Mode Rejection Ratio
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Typical Characteristics (continued)
Figure 7. Voltage Follower Pulse Response
Figure 8. Voltage Follower Pulse Response (Small Signal)
Figure 9. Large Signal Frequency Response
Figure 10. Output Characteristics Current Sourcing
Figure 11. Output Characteristics Current Sinking
Figure 12. Current Limiting
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Typical Characteristics (continued)
Figure 13. Input Current (LM2902-N Only)
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Figure 14. Voltage Gain (LM2902-N Only)
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7 Detailed Description
7.1 Overview
The LM124-N series are op amps which operate with only a single power supply voltage, have true-differential
inputs, and remain in the linear mode with an input common-mode voltage of 0 VDC. These amplifiers operate
over a wide range of power supply voltage with little change in performance characteristics. At 25°C amplifier
operation is possible down to a minimum supply voltage of 2.3 VDC.
7.2 Functional Block Diagram
7.3 Feature Description
The LM124 provides a compelling balance of performance versus current consumption. The 700 μA of supply
current draw over the wide operating conditions with a 1-MHz gain-bandwidth and temperature compensated
bias currents makes the LM124 an effective solution for large variety of applications. The input offset voltage of 2
mV and offset current of 5 nA, along with the 45n-A bias current across a wide supply voltage means a single
design can be used in a large number of different implementations.
7.4 Device Functional Modes
Large differential input voltages can be easily accommodated and, as input differential voltage protection diodes
are not needed, no large input currents result from large differential input voltages. The differential input voltage
may be larger than V+ without damaging the device. Protection should be provided to prevent the input voltages
from going negative more than −0.3 VDC (at 25°C). An input clamp diode with a resistor to the IC input terminal
can be used.
To reduce the power supply drain, the amplifiers have a class A output stage for small signal levels which
converts to class B in a large signal mode. This allows the amplifiers to both source and sink large output
currents. Therefore both NPN and PNP external current boost transistors can be used to extend the power
capability of the basic amplifiers. The output voltage needs to raise approximately 1 diode drop above ground to
bias the on-chip vertical PNP transistor for output current sinking applications.
For ac applications, where the load is capacitively coupled to the output of the amplifier, a resistor should be
used, from the output of the amplifier to ground to increase the class A bias current and prevent crossover
distortion.
Where the load is directly coupled, as in dc applications, there is no crossover distortion.
Capacitive loads which are applied directly to the output of the amplifier reduce the loop stability margin. Values
of 50 pF can be accommodated using the worst-case non-inverting unity gain connection. Large closed loop
gains or resistive isolation should be used if larger load capacitance must be driven by the amplifier.
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Device Functional Modes (continued)
The bias network of the LM124-N establishes a drain current which is independent of the magnitude of the power
supply voltage over the range of from 3 VDC to 30 VDC.
Output short circuits either to ground or to the positive power supply should be of short time duration. Units can
be destroyed, not as a result of the short circuit current causing metal fusing, but rather due to the large increase
in IC chip dissipation which will cause eventual failure due to excessive junction temperatures. Putting direct
short-circuits on more than one amplifier at a time will increase the total IC power dissipation to destructive
levels, if not properly protected with external dissipation limiting resistors in series with the output leads of the
amplifiers. The larger value of output source current which is available at 25°C provides a larger output current
capability at elevated temperatures (see Typical Characteristics) than a standard IC op amp.
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8
SNOSC16D – MARCH 2000 – REVISED JANUARY 2015
Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
8.1 Application Information
The LM124 series of amplifiers is specified for operation from 3 V to 32 V (±1.5 V to ±16 V). Many of the
specifications apply from –40°C to 125°C. Parameters that can exhibit significant variance with regards to
operating voltage or temperature are presented in Typical Characteristics.
8.2 Typical Applications
Figure 15 emphasizes operation on only a single power supply voltage. If complementary power supplies are
available, all of the standard op amp circuits can be used. In general, introducing a pseudo-ground (a bias
voltage reference of V+/2) will allow operation above and below this value in single power supply systems. Many
application circuits are shown which take advantage of the wide input common-mode voltage range which
includes ground. In most cases, input biasing is not required and input voltages which range to ground can easily
be accommodated.
8.2.1 Non-Inverting DC Gain (0 V Input = 0 V Output)
*R not needed due to temperature independent IIN
Figure 15. Non-Inverting Amplifier with G=100
8.2.1.1 Design Requirements
For this example application, the required signal gain is a non-inverting 100x±5% with a supply voltage of 5 V.
8.2.1.2 Detailed Design Procedure
Using the equation for a non-inverting gain configuration, Av = 1+R2/R1. Setting the R1 to 10 kΩ, R2 is 99 times
larger than R1, which is 990 kΩ. A 1MΩ is more readily available, and provides a gain of 101, which is within the
desired specification.
The gain-frequency characteristic of the amplifier and its feedback network must be such that oscillation does not
occur. To meet this condition, the phase shift through amplifier and feedback network must never exceed 180°
for any frequency where the gain of the amplifier and its feedback network is greater than unity. In practical
applications, the phase shift should not approach 180° since this is the situation of conditional stability. Obviously
the most critical case occurs when the attenuation of the feedback network is zero.
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Typical Applications (continued)
8.2.1.3 Application Curve
Figure 16. Non-Inverting Amplified Response Curve
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Typical Applications (continued)
8.2.2 Other Application Circuits at V+ = 5.0 VDC
Where: V0 = V1 + V2 − V3 − V4
(V1 + V2) ≥ (V3 + V4) to keep VO > 0 VDC
Figure 17. DC Summing Amplifier
(VIN'S ≥ 0 VDC And VO ≥ VDC)
Where: V0 = 0 VDC for VIN = 0 VDC
AV = 10
Figure 18. Power Amplifier
fo = 1 kHz
Figure 19. LED Driver
Copyright © 2000–2015, Texas Instruments Incorporated
Q = 50
AV = 100 (40 dB)
Figure 20. “BI-QUAD” RC Active Bandpass Filter
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Typical Applications (continued)
Figure 21. Fixed Current Sources
*(Increase R1 for IL small)
16
Figure 22. Lamp Driver
Figure 23. Current Monitor
Figure 24. Driving TTL
Figure 25. Voltage Follower
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Typical Applications (continued)
Figure 26. Pulse Generator
Figure 27. Squarewave Oscillator
IO = 1 amp/volt VIN (Increase RE for Io small)
Figure 28. Pulse Generator
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Figure 29. High Compliance Current Sink
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Typical Applications (continued)
Figure 30. Low Drift Peak Detector
Figure 31. Comparator With Hysteresis
*Wide control voltage range:
0 VDC ≤ VC ≤ 2 (V+ −1.5 VDC)
VO = VR
Figure 32. Ground Referencing a Differential Input
Signal
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Figure 33. Voltage Controlled Oscillator Circuit
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Typical Applications (continued)
Q=1
AV = 2
Figure 34. Photo Voltaic-Cell Amplifier
Figure 35. DC Coupled Low-Pass RC Active Filter
Figure 36. AC Coupled Inverting Amplifier
Figure 37. AC Coupled Non-Inverting Amplifier
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Typical Applications (continued)
Figure 38. High Input Z, DC Differential Amplifier
Figure 39. High Input Z Adjustable-Gain DC Instrumentation Amplifier
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Typical Applications (continued)
Figure 40. Bridge Current Amplifier
Figure 41. Using Symmetrical Amplifiers to Reduce Input Current (General Concept)
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Typical Applications (continued)
fO = 1 kHz
Q = 25
Figure 42. Bandpass Active Filter
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SNOSC16D – MARCH 2000 – REVISED JANUARY 2015
9 Power Supply Recommendations
The pinouts of the package have been designed to simplify PC board layouts. Inverting inputs are adjacent to
outputs for all of the amplifiers and the outputs have also been placed at the corners of the package (pins 1, 7, 8,
and 14).
Precautions should be taken to insure that the power supply for the integrated circuit never becomes reversed in
polarity or that the unit is not inadvertently installed backwards in a test socket as an unlimited current surge
through the resulting forward diode within the IC could cause fusing of the internal conductors and result in a
destroyed unit.
10 Layout
10.1 Layout Guidelines
The V + pin should be bypassed to ground with a low-ESR capacitor. The optimum placement is closest to the V
+ and ground pins.
Take care to minimize the loop area formed by the bypass capacitor connection between V + and ground.
The ground pin should be connected to the PCB ground plane at the pin of the device.
The feedback components should be placed as close to the device as possible minimizing strays.
10.2 Layout Example
GND
2
VOUTD
2
VOUTA
VOUTA
1
VINA
1
IN-A
2
IN+A
GND
1
IN-A
IN-A
IN+A
1
GND
2
V+
V+
1: VOUTA
VIND
VINC
2
GND
GND
GND
GND
2
GND
14: VOUTD VOUTD
2: IN-A
13: IN-D
3: IN+A
12: IN+D
4: V+
11: GND
1
IN-D
IN-D
1
IN-D
1
VIND
2
IN+D
IN+D
GND
NC
VI
IN-B
1
IN-B
1
IN-B
2
GND
2
VOUTB
IN+C
6: IN-B
9: IN-C
IN-C
7: VOUTB
2
IN+C
1
VINC
1
IN-C
1
IN-C
2
VOUTC
2
GND
VINC
8: VOUTC VOUTC
GND
VOUTB
10: IN+C
VOUTD
1
VINB
5: IN+B
VOUTA
IN+B
2
IN+B
GND
GND
Figure 43. Layout Example
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11 Device and Documentation Support
11.1 Related Links
The table below lists quick access links. Categories include technical documents, support and community
resources, tools and software, and quick access to sample or buy.
Table 1. Related Links
PARTS
PRODUCT FOLDER
SAMPLE & BUY
TECHNICAL
DOCUMENTS
TOOLS &
SOFTWARE
SUPPORT &
COMMUNITY
LM124-N
Click here
Click here
Click here
Click here
Click here
LM224-N
Click here
Click here
Click here
Click here
Click here
LM2902-N
Click here
Click here
Click here
Click here
Click here
LM324-N
Click here
Click here
Click here
Click here
Click here
11.2 Trademarks
All trademarks are the property of their respective owners.
11.3 Electrostatic Discharge Caution
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
11.4 Glossary
SLYZ022 — TI Glossary.
This glossary lists and explains terms, acronyms, and definitions.
12 Mechanical, Packaging, and Orderable Information
The following pages include mechanical, packaging, and orderable information. This information is the most
current data available for the designated devices. This data is subject to change without notice and revision of
this document. For browser-based versions of this data sheet, refer to the left-hand navigation.
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PACKAGE OPTION ADDENDUM
www.ti.com
27-Oct-2022
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
Samples
(4/5)
(6)
LM124AJ/PB
ACTIVE
CDIP
J
14
25
Non-RoHS
& Green
Call TI
Level-1-NA-UNLIM
-55 to 125
LM124AJ
Samples
LM124J/PB
ACTIVE
CDIP
J
14
25
Non-RoHS
& Green
Call TI
Level-1-NA-UNLIM
-55 to 125
LM124J
Samples
LM224J
ACTIVE
CDIP
J
14
25
Non-RoHS
& Green
Call TI
Level-1-NA-UNLIM
-25 to 85
LM224J
Samples
LM2902M
NRND
SOIC
D
14
55
Non-RoHS
& Green
Call TI
Level-1-235C-UNLIM
-40 to 85
LM2902M
LM2902M/NOPB
ACTIVE
SOIC
D
14
55
RoHS & Green
Call TI | SN
Level-1-260C-UNLIM
-40 to 85
LM2902M
LM2902MT
NRND
TSSOP
PW
14
94
Non-RoHS
& Green
Call TI
Level-1-260C-UNLIM
-40 to 85
LM290
2MT
LM2902MT/NOPB
ACTIVE
TSSOP
PW
14
94
RoHS & Green
SN
Level-1-260C-UNLIM
-40 to 85
LM290
2MT
Samples
LM2902MTX/NOPB
ACTIVE
TSSOP
PW
14
2500
RoHS & Green
SN
Level-1-260C-UNLIM
-40 to 85
LM290
2MT
Samples
LM2902MX
NRND
SOIC
D
14
2500
Non-RoHS
& Green
Call TI
Level-1-235C-UNLIM
-40 to 85
LM2902M
LM2902MX/NOPB
ACTIVE
SOIC
D
14
2500
RoHS & Green
Call TI | SN
Level-1-260C-UNLIM
-40 to 85
LM2902M
Samples
LM2902N/NOPB
ACTIVE
PDIP
N
14
25
RoHS & Green
Call TI | NIPDAU
Level-1-NA-UNLIM
-40 to 85
LM2902N
Samples
LM324AM
NRND
SOIC
D
14
55
Non-RoHS
& Green
Call TI
Level-1-235C-UNLIM
0 to 70
LM324AM
LM324AM/NOPB
ACTIVE
SOIC
D
14
55
RoHS & Green
Call TI | SN
Level-1-260C-UNLIM
0 to 70
LM324AM
LM324AMX
NRND
SOIC
D
14
2500
Non-RoHS
& Green
Call TI
Level-1-235C-UNLIM
0 to 70
LM324AM
LM324AMX/NOPB
ACTIVE
SOIC
D
14
2500
RoHS & Green
Call TI | SN
Level-1-260C-UNLIM
0 to 70
LM324AM
Samples
LM324AN/NOPB
ACTIVE
PDIP
N
14
25
RoHS & Green
NIPDAU
Level-1-NA-UNLIM
0 to 70
LM324AN
Samples
LM324M
NRND
SOIC
D
14
55
Non-RoHS
& Green
Call TI
Level-1-235C-UNLIM
0 to 70
LM324M
LM324M/NOPB
ACTIVE
SOIC
D
14
55
RoHS & Green
Call TI | SN
Level-1-260C-UNLIM
0 to 70
LM324M
Addendum-Page 1
Samples
Samples
Samples
PACKAGE OPTION ADDENDUM
www.ti.com
27-Oct-2022
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
Samples
(4/5)
(6)
LM324MT/NOPB
ACTIVE
TSSOP
PW
14
94
RoHS & Green
SN
Level-1-260C-UNLIM
0 to 70
LM324
MT
Samples
LM324MTX/NOPB
ACTIVE
TSSOP
PW
14
2500
RoHS & Green
SN
Level-1-260C-UNLIM
0 to 70
LM324
MT
Samples
LM324MX
NRND
SOIC
D
14
2500
Non-RoHS
& Green
Call TI
Level-1-235C-UNLIM
0 to 70
LM324M
LM324MX/NOPB
ACTIVE
SOIC
D
14
2500
RoHS & Green
Call TI | SN
Level-1-260C-UNLIM
0 to 70
LM324M
Samples
LM324N/NOPB
ACTIVE
PDIP
N
14
25
RoHS & Green
Call TI | NIPDAU
Level-1-NA-UNLIM
0 to 70
LM324N
Samples
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of