LM158/LM258/LM358/LM2904
Low Power Dual Operational Amplifiers
General Description
The LM158 series consists of two independent, high gain,
internally frequency compensated operational amplifiers
which were designed specifically 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.
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 LM158 series can be directly
operated off of the standard +5V power supply voltage which
is used in digital systems and will easily provide the required
interface electronics without requiring the additional ±15V
power supplies.
The LM358 and LM2904 are available in a chip sized pack-
age (8-Bump micro SMD) using National’s micro SMD pack-
age technology.
Unique Characteristics
nIn the linear mode the input common-mode voltage
range includes ground and the output voltage can also
swing to ground, even though operated from only a
single power supply voltage.
nThe unity gain cross frequency is temperature
compensated.
nThe input bias current is also temperature compensated.
Advantages
nTwo internally compensated op amps
nEliminates need for dual supplies
nAllows direct sensing near GND and V
OUT
also goes to
GND
nCompatible with all forms of logic
nPower drain suitable for battery operation
nPin-out same as LM1558/LM1458 dual op amp
Features
nAvailable in 8-Bump micro SMD chip sized package,
(See AN-1112)
nInternally frequency compensated for unity gain
nLarge dc voltage gain: 100 dB
nWide bandwidth (unity gain): 1 MHz
(temperature compensated)
nWide power supply range:
— Single supply: 3V to 32V
— or dual supplies: ±1.5V to ±16V
nVery low supply current drain (500 µA)—essentially
independent of supply voltage
nLow input offset voltage: 2 mV
nInput common-mode voltage range includes ground
nDifferential input voltage range equal to the power
supply voltage
nLarge output voltage swing: 0V to V
+
− 1.5V
Voltage Controlled Oscillator (VCO)
00778723
March 2002
LM158/LM258/LM358/LM2904 Low Power Dual Operational Amplifiers
© 2002 National Semiconductor Corporation DS007787 www.national.com
Absolute Maximum Ratings (Note 9)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
LM158/LM258/LM358 LM2904
LM158A/LM258A/LM358A
Supply Voltage, V
+
32V 26V
Differential Input Voltage 32V 26V
Input Voltage −0.3V to +32V −0.3V to +26V
Power Dissipation (Note 1)
Molded DIP 830 mW 830 mW
Metal Can 550 mW
Small Outline Package (M) 530 mW 530 mW
micro SMD 435mW
Output Short-Circuit to GND
(One Amplifier) (Note 2)
V
+
≤15V and T
A
= 25˚C Continuous Continuous
Input Current (V
IN
<−0.3V) (Note 3) 50 mA 50 mA
Operating Temperature Range
LM358 0˚C to +70˚C −40˚C to +85˚C
LM258 −25˚C to +85˚C
LM158 −55˚C to +125˚C
Storage Temperature Range −65˚C to +150˚C −65˚C to +150˚C
Lead Temperature, DIP
(Soldering, 10 seconds) 260˚C 260˚C
Lead Temperature, Metal Can
(Soldering, 10 seconds) 300˚C 300˚C
Soldering Information
Dual-In-Line Package
Soldering (10 seconds) 260˚C 260˚C
Small Outline Package
Vapor Phase (60 seconds) 215˚C 215˚C
Infrared (15 seconds) 220˚C 220˚C
See AN-450 “Surface Mounting Methods and Their Effect on Product Reliability” for other methods of soldering
surface mount devices.
ESD Tolerance (Note 10) 250V 250V
Electrical Characteristics
V
+
= +5.0V, unless otherwise stated
Parameter Conditions LM158A LM358A LM158/LM258 Units
Min Typ Max Min Typ Max Min Typ Max
Input Offset Voltage (Note 5), T
A
= 25˚C 1 2 2 3 2 5 mV
Input Bias Current I
IN(+)
or I
IN(−)
,T
A
= 25˚C, 20 50 45 100 45 150 nA
V
CM
= 0V, (Note 6)
Input Offset Current I
IN(+)
−I
IN(−)
,V
CM
= 0V, T
A
= 25˚C 2 10 5 30 3 30 nA
Input Common-Mode V
+
= 30V, (Note 7) 0 V
+
−1.5 0 V
+
−1.5 0 V
+
−1.5 V
Voltage Range (LM2904, V
+
= 26V), T
A
= 25˚C
Supply Current Over Full Temperature Range
R
L
=∞on All Op Amps
V
+
= 30V (LM2904 V
+
= 26V) 1 2 1 2 1 2 mA
V
+
= 5V 0.5 1.2 0.5 1.2 0.5 1.2 mA
LM158/LM258/LM358/LM2904
www.national.com 2
Electrical Characteristics
V
+
= +5.0V, unless otherwise stated
Parameter Conditions LM358 LM2904 Units
Min Typ Max Min Typ Max
Input Offset Voltage (Note 5) , T
A
= 25˚C 2 7 2 7 mV
Input Bias Current I
IN(+)
or I
IN(−)
,T
A
= 25˚C, 45 250 45 250 nA
V
CM
= 0V, (Note 6)
Input Offset Current I
IN(+)
−I
IN(−)
,V
CM
= 0V, T
A
= 25˚C 5 50 5 50 nA
Input Common-Mode V
+
= 30V, (Note 7) 0 V
+
−1.5 0 V
+
−1.5 V
Voltage Range (LM2904, V
+
= 26V), T
A
= 25˚C
Supply Current Over Full Temperature Range
R
L
=∞on All Op Amps
V
+
= 30V (LM2904 V
+
= 26V) 1 2 1 2 mA
V
+
= 5V 0.5 1.2 0.5 1.2 mA
Electrical Characteristics
V
+
= +5.0V, (Note 4), unless otherwise stated
Parameter Conditions LM158A LM358A LM158/LM258 Units
Min Typ Max Min Typ Max Min Typ Max
Large Signal Voltage V
+
= 15V, T
A
= 25˚C,
Gain R
L
≥2kΩ, (For V
O
= 1V 50 100 25 100 50 100 V/mV
to 11V)
Common-Mode T
A
= 25˚C, 70 85 65 85 70 85 dB
Rejection Ratio V
CM
=0VtoV
+
−1.5V
Power Supply V
+
=5Vto30V
Rejection Ratio (LM2904, V
+
= 5V 65 100 65 100 65 100 dB
to 26V), T
A
= 25˚C
Amplifier-to-Amplifier f = 1 kHz to 20 kHz, T
A
= 25˚C −120 −120 −120 dB
Coupling (Input Referred), (Note 8)
Output Current Source V
IN+
= 1V,
20 40 20 40 20 40 mA
V
IN−
= 0V,
V
+
= 15V,
V
O
= 2V, T
A
= 25˚C
Sink V
IN−
= 1V, V
IN+
=0V
V
+
= 15V, T
A
= 25˚C, 10 20 10 20 10 20 mA
V
O
=2V
V
IN−
= 1V,
12 50 12 50 12 50 µA
V
IN+
=0V
T
A
= 25˚C, V
O
= 200 mV,
V
+
= 15V
Short Circuit to Ground T
A
= 25˚C, (Note 2), 40 60 40 60 40 60 mA
V
+
= 15V
Input Offset Voltage (Note 5) 4 5 7 mV
Input Offset Voltage R
S
=0Ω7 15 7 20 7 µV/˚C
Drift
Input Offset Current I
IN(+)
−I
IN(−)
30 75 100 nA
Input Offset Current R
S
=0Ω10 200 10 300 10 pA/˚C
Drift
Input Bias Current I
IN(+)
or I
IN(−)
40 100 40 200 40 300 nA
Input Common-Mode V
+
= 30 V, (Note 7) 0V
+
−2 0 V
+
−2 0 V
+
−2 V
Voltage Range (LM2904, V
+
= 26V)
LM158/LM258/LM358/LM2904
www.national.com3
Electrical Characteristics (Continued)
V
+
= +5.0V, (Note 4), unless otherwise stated
Parameter Conditions LM158A LM358A LM158/LM258 Units
Min Typ Max Min Typ Max Min Typ Max
Large Signal Voltage V
+
= +15V 25 15 25 V/mVGain (V
O
= 1V to 11V)
R
L
≥2kΩ
Output V
OH
V
+
= +30V R
L
=2kΩ26 26 26 V
Voltage (LM2904, V
+
= 26V) R
L
=10kΩ27 28 27 28 27 28 V
Swing V
OL
V
+
= 5V, R
L
=10kΩ520 520 520 mV
Output Current Source V
IN+
= +1V, V
IN−
= 0V, 10 20 10 20 10 20 mA
V
+
= 15V, V
O
=2V
Sink V
IN−
= +1V, V
IN+
= 0V, 10 15 5 8 5 8 mA
V
+
= 15V, V
O
=2V
Electrical Characteristics
V
+
= +5.0V, (Note 4), unless otherwise stated
Parameter Conditions LM358 LM2904 Units
Min Typ Max Min Typ Max
Large Signal Voltage V
+
= 15V, T
A
= 25˚C,
Gain R
L
≥2kΩ, (For V
O
= 1V 25 100 25 100 V/mV
to 11V)
Common-Mode T
A
= 25˚C, 65 85 50 70 dB
Rejection Ratio V
CM
=0VtoV
+
−1.5V
Power Supply V
+
=5Vto30V
Rejection Ratio (LM2904, V
+
= 5V 65 100 50 100 dB
to 26V), T
A
= 25˚C
Amplifier-to-Amplifier f = 1 kHz to 20 kHz, T
A
= 25˚C −120 −120 dB
Coupling (Input Referred), (Note 8)
Output Current Source V
IN+
= 1V,
20 40 20 40 mA
V
IN−
= 0V,
V
+
= 15V,
V
O
= 2V, T
A
= 25˚C
Sink V
IN−
= 1V, V
IN+
=0V
V
+
= 15V, T
A
= 25˚C, 10 20 10 20 mA
V
O
=2V
V
IN−
= 1V,
12 50 12 50 µA
V
IN+
=0V
T
A
= 25˚C, V
O
= 200 mV,
V
+
= 15V
Short Circuit to Ground T
A
= 25˚C, (Note 2), 40 60 40 60 mA
V
+
= 15V
Input Offset Voltage (Note 5) 9 10 mV
Input Offset Voltage R
S
=0Ω7 7 µV/˚C
Drift
Input Offset Current I
IN(+)
−I
IN(−)
150 45 200 nA
Input Offset Current R
S
=0Ω10 10 pA/˚C
Drift
Input Bias Current I
IN(+)
or I
IN(−)
40 500 40 500 nA
Input Common-Mode V
+
= 30 V, (Note 7) 0V
+
−2 0 V
+
−2 V
Voltage Range (LM2904, V
+
= 26V)
LM158/LM258/LM358/LM2904
www.national.com 4
Electrical Characteristics (Continued)
V
+
= +5.0V, (Note 4), unless otherwise stated
Parameter Conditions LM358 LM2904 Units
Min Typ Max Min Typ Max
Large Signal Voltage V
+
= +15V 15 15 V/mVGain (V
O
= 1V to 11V)
R
L
≥2kΩ
Output V
OH
V
+
= +30V R
L
=2kΩ26 22 V
Voltage (LM2904, V
+
= 26V) R
L
=10kΩ27 28 23 24 V
Swing V
OL
V
+
= 5V, R
L
=10kΩ5 20 5 100 mV
Output Current Source V
IN+
= +1V, V
IN−
= 0V, 10 20 10 20 mA
V
+
= 15V, V
O
=2V
Sink V
IN−
= +1V, V
IN+
= 0V, 58 58 mA
V
+
= 15V, V
O
=2V
Note 1: For operating at high temperatures, the LM358/LM358A, LM2904 must be derated based on a +125˚C maximum junction temperature and a thermal
resistance of 120˚C/W for MDIP, 182˚C/W for Metal Can, 189˚C/W for Small Outline package, and 230˚C/W for micro SMD, which applies for the device soldered
in a printed circuit board, operating in a still air ambient. The LM258/LM258Aand LM158/LM158Acan be derated based on a +150˚C maximum junction temperature.
The dissipation is the total of both amplifiers—use external resistors, where possible, to allow the amplifier to saturate or to reduce the power which is dissipated
in the integrated circuit.
Note 2: Short circuits from the output to V+can cause excessive heating and eventual destruction. When considering short cirucits to ground, the maximum output
current is approximately 40 mA independent of the magnitude of V+. At values of supply voltage in excess of +15V, continuous short-circuits can exceed the power
dissipation ratings and cause eventual destruction. Destructive dissipation can result from simultaneous shorts on all amplifiers.
Note 3: 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 −0.3V (at 25˚C).
Note 4: These specifications are limited to −55˚C ≤TA≤+125˚C for the LM158/LM158A. With the LM258/LM258A, all temperature specifications are limited to
−25˚C ≤TA≤+85˚C, the LM358/LM358A temperature specifications are limited to 0˚C ≤TA≤+70˚C, and the LM2904 specifications are limited to −40˚C ≤TA≤
+85˚C.
Note 5: VO.1.4V, RS=0Ωwith V+from 5V to 30V; and over the full input common-mode range (0V to V+−1.5V) at 25˚C. For LM2904, V+from 5V to 26V.
Note 6: 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 outputso
no loading change exists on the input lines.
Note 7: The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3V (at 25˚C). The upper end of the
common-mode voltage range is V+−1.5V (at 25˚C), but either or both inputs can go to +32V without damage (+26V for LM2904), independent of the magnitude of
V+.
Note 8: 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.
Note 9: Refer to RETS158AX for LM158A military specifications and to RETS158X for LM158 military specifications.
Note 10: Human body model, 1.5 kΩin series with 100 pF.
LM158/LM258/LM358/LM2904
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Typical Performance Characteristics
Input Voltage Range Input Current
00778734 00778735
Supply Current Voltage Gain
00778736 00778737
Open Loop Frequency Response Common-Mode Rejection Ratio
00778738
00778739
LM158/LM258/LM358/LM2904
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Typical Performance Characteristics (Continued)
Voltage Follower Pulse Response Voltage Follower Pulse Response (Small Signal)
00778740 00778741
Large Signal Frequency Response Output Characteristics Current Sourcing
00778742 00778743
Output Characteristics Current Sinking Current Limiting
00778744 00778745
LM158/LM258/LM358/LM2904
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Typical Performance Characteristics (Continued)
Input Current (LM2902 only) Voltage Gain (LM2902 only)
00778746 00778747
Application Hints
The LM158 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 V
DC
. 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 V
DC
.
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 result-
ing forward diode within the IC could cause fusing of the
internal conductors and result in a destroyed unit.
Large differential input voltages can be easily accomodated
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 V
DC
(at 25˚C). An input clamp diode with a
resistor to the IC input terminal can be used.
To reduce the power supply current 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 transis-
tors 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 accomodated 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.
The bias network of the LM158 establishes a drain current
which is independent of the magnitude of the power supply
voltage over the range of 3 V
DC
to 30 V
DC
.
Output short circuits either to ground or to the positive power
supply should be of short time duration. Units can be de-
stroyed, 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 exces-
sive function 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 pro-
tected 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 performance characteristics) than a standard IC
op amp.
The circuits presented in the section on typical applications
emphasize 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, introduc-
ing 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.
LM158/LM258/LM358/LM2904
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Connection Diagrams
8-Bump micro SMD LM358 micro SMD Marking Orientation
00778755
Top View
(Bump Side Down)
00778756
Top View
LM2904 micro SMD Marking Orientation Metal Can Package
00778757
Top View
00778701
Top View
DIP/SO Package
00778702
Top View
LM158/LM258/LM358/LM2904
www.national.com9
Ordering Information
Package Temperature Range NSC Drawing
−55˚C to 125˚C −25˚C to 85˚C 0˚C to 70˚C −40˚C to 85˚C
SO-8 LM358AM
LM358AMX
LM358M
LM358MX
LM2904M
LM2904MX M08A
8-Pin Molded
DIP LM358AN
LM358N LM2904N N08E
8-Pin Ceramic
DIP LM158AJ/883(Note 11)
LM158J/883(Note 11)
LM158J
LM158AJLQML(Note 12)
LM158AJQMLV(Note 12)
J08A
TO-5, 8-Pin
Metal Can LM158AH/883(Note 11)
LM158H/883(Note 11)
LM158AH
LM158H
LM158AHLQML(Note 12)
LM158AHLQMLV(Note 12)
LM258H LM358H
H08C
8-Bump micro
SMD LM358BP
LM358BPX LM2904IBP
LM2904IBPX BPA08AAB
14-Pin Ceramic
SOIC LM158AWG/883 WG10A
Note 11: LM158 is available per SMD #5962-8771001
LM158A is available per SMD #5962-8771002
Note 12: See STD Mil DWG 5962L87710 for Radiation Tolerant Devices
LM158/LM258/LM358/LM2904
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Typical Single-Supply Applications
(V
+
= 5.0 V
DC
)
Non-Inverting DC Gain (0V Output)
00778706
*R not needed due to temperature independent IIN 00778707
DC Summing Amplifier
(V
IN’S
≥0V
DC
and V
O
≥0V
DC
) Power Amplifier
00778708
Where: VO=V
1+V
2+V
3+V
4
(V1+V
2
)≥(V3+V
4
) to keep VO>0V
DC
00778709
VO=0V
DC for VIN =0V
DC
AV=10
LM158/LM258/LM358/LM2904
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Typical Single-Supply Applications (V
+
= 5.0 V
DC
) (Continued)
“BI-QUAD” RC Active Bandpass Filter
00778710
fo= 1 kHz
Q=50
A
v= 100 (40 dB)
Fixed Current Sources
00778711
Lamp Driver
00778712
LM158/LM258/LM358/LM2904
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Typical Single-Supply Applications (V
+
= 5.0 V
DC
) (Continued)
LED Driver Current Monitor
00778713
00778714
*(Increase R1 for ILsmall)
VL≤V+−2V
Driving TTL Voltage Follower
00778715 00778717
VO=V
IN
Pulse Generator
00778716
LM158/LM258/LM358/LM2904
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Typical Single-Supply Applications (V
+
= 5.0 V
DC
) (Continued)
Squarewave Oscillator Pulse Generator
00778718 00778719
Low Drift Peak Detector
00778720
HIGH ZIN
LOW ZOUT
LM158/LM258/LM358/LM2904
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Typical Single-Supply Applications (V
+
= 5.0 V
DC
) (Continued)
High Compliance Current Sink Comparator with Hysteresis
00778721
IO= 1 amp/volt VIN
(Increase REfor IOsmall)
00778722
Voltage Controlled Oscillator (VCO)
00778723
*WIDE CONTROL VOLTAGE RANGE: 0 VDC ≤VC≤2(V
+−1.5V DC)
LM158/LM258/LM358/LM2904
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Typical Single-Supply Applications (V
+
= 5.0 V
DC
) (Continued)
AC Coupled Inverting Amplifier
00778724
Ground Referencing a Differential Input Signal
00778725
LM158/LM258/LM358/LM2904
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Typical Single-Supply Applications (V
+
= 5.0 V
DC
) (Continued)
AC Coupled Non-Inverting Amplifier
00778726
Av= 11 (As Shown)
DC Coupled Low-Pass RC Active Filter
00778727
fo= 1 kHz
Q=1
A
V=2
LM158/LM258/LM358/LM2904
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Typical Single-Supply Applications (V
+
= 5.0 V
DC
) (Continued)
Bandpass Active Filter
00778728
fo= 1 kHz
Q=25
High Input Z, DC Differential Amplifier
00778729
LM158/LM258/LM358/LM2904
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Typical Single-Supply Applications (V
+
= 5.0 V
DC
) (Continued)
Photo Voltaic-Cell Amplifier Bridge Current Amplifier
00778730
00778733
High Input Z Adjustable-Gain
DC Instrumentation Amplifier
00778731
LM158/LM258/LM358/LM2904
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Typical Single-Supply Applications (V
+
= 5.0 V
DC
) (Continued)
Using Symmetrical Amplifiers to
Reduce Input Current (General Concept)
00778732
Schematic Diagram (Each Amplifier)
00778703
LM158/LM258/LM358/LM2904
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Physical Dimensions inches (millimeters) unless otherwise noted
Metal Can Package (H)
NS Package Number H08C
Cerdip Package (J)
NS Package Number J08A
LM158/LM258/LM358/LM2904
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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
SOIC Package (M)
NS Package Number M08A
Molded Dip Package (N)
NS Package Number N08E
LM158/LM258/LM358/LM2904
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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
Order Number LM158AWG/883
NS Package Number WG10A
LM158/LM258/LM358/LM2904
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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
8-Bump micro SMD
NS Package Number BPA08AAB
X
1
= 1.285 X
2
= 1.285 X
3
= 0.850
NOTES: UNLESS OTHERWISE SPECIFIED
1. EPOXY COATING
2. 63Sn/37Pb EUTECTIC BUMP
3. RECOMMEND NON-SOLDER MASK DEFINED LANDING PAD.
4. PIN A1 IS ESTABLISHED BY LOWER LEFT CORNER WITH RESPECT TO TEXT ORIENTATION REMAINING PINS ARE NUMBERED
COUNTERCLOCKWISE.
5. XXX IN DRAWING NUMBER REPRESENTS PACKAGE SIZE VARIATION WHERE X1IS PACKAGE WIDTH, X2IS PACKAGE LENGTH AND X3IS
PACKAGE HEIGHT.
6. REFERENCE JEDEC REGISTRATION MO-211, VARIATION BC.
LIFE SUPPORT POLICY
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DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and
whose failure to perform when properly used in
accordance with instructions for use provided in the
labeling, can be reasonably expected to result in a
significant injury to the user.
2. A critical component is any component of a life
support device or system whose failure to perform
can be reasonably expected to cause the failure of
the life support device or system, or to affect its
safety or effectiveness.
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LM158/LM258/LM358/LM2904 Low Power Dual Operational Amplifiers
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
