LPV321 Single/LPV358 Dual/LPV324 Quad
General Purpose, Low Voltage, Low Power, Rail-to-Rail
Output Operational Amplifiers
General Description
The LPV321/358/324 are low power (9 µA per channel at
5.0V) versions of the LMV321/358/324 op amps. This is
another addition to the LMV321/358/324 family of commod-
ity op amps.
The LPV321/358/324 are the most cost effective solutions
for the applications where low voltage, low power operation,
space saving and low price are needed. The LPV321/358/
324 have rail-to-rail output swing capability and the input
common-mode voltage range includes ground. They all ex-
hibit excellent speed-power ratio, achieving 5 kHz of band-
width with a supply current of only 9 µA.
The LPV321 is available in space saving 5-Pin SC70, which
is approximately half the size of 5-Pin SOT23. The small
package saves space on PC boards, and enables the design
of small portable electronic devices. It also allows the de-
signer to place the device closer to the signal source to
reduce noise pickup and increase signal integrity.
The chips are built with National’s advanced submicron
silicon-gate BiCMOS process. The LPV321/358/324 have
bipolar input and output stages for improved noise perfor-
mance and higher output current drive.
Features
(For V
+
= 5V and V
= 0V, typical unless otherwise noted)
jGuaranteed 2.7V and 5V performance
jNo crossover distortion
jSpace saving package 5-Pin SC70
2.0x2.1x1.0 mm
jIndustrial temperature
range −40˚C to +85˚C
jGain-bandwidth product 152 kHz
jLow supply current
LPV321 9 µA
LPV358 15 µA
LPV324 28 µA
jRail-to-rail output swing
@100 kLoad V
+
−3.5 mV
V
+90 mV
jV
CM
−0.2V to V
+
−0.8V
Applications
nActive filters
nGeneral purpose low voltage applications
nGeneral purpose portable devices
Connection Diagrams
5-Pin
SC70/SOT23 8-Pin SOIC/MSOP 14-Pin SOIC/TSSOP
10092001
Top View 10092002
Top View
10092003
Top View
October 2006
LPV321 Single/LPV358 Dual/LPV324 Quad General Purpose, Low Voltage, Low Power, Rail-to-Rail
Output Operational Amplifiers
© 2006 National Semiconductor Corporation DS100920 www.national.com
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
ESD Tolerance (Note 2)
Human Body Model
LPV324 2000V
LPV358 1500V
LPV321 1500V
Machine Model 100V
Differential Input Voltage ±Supply Voltage
Supply Voltage (V
+
–V
) 5.5V
Output Short Circuit to V
+
(Note 3)
Output Short Circuit to V
(Note 4)
Soldering Information
Infrared or Convection (20 sec) 235˚C
Storage Temperature Range −65˚C to 150˚C
Junction Temp. (T
J
, max) (Note 5) 150˚C
Operating Ratings (Note 1)
Supply Voltage 2.7V to 5V
Temperature Range −40˚C to +85˚C
Thermal Resistance (θ
JA
)(Note 10)
5-Pin SC70 478˚C/W
5-Pin SOT23 265˚C/W
8-Pin SOIC 190˚C/W
8-Pin MSOP 235˚C/W
14-Pin SOIC 145˚C/W
14-Pin TSSOP 155˚C/W
2.7V DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25˚C, V
+
= 2.7V, V
= 0V, V
CM
= 1.0V, V
O
=V
+
/2 and R
L
>1M.
Symbol Parameter Conditions
Min
(Note 7)
Typ
(Note 6)
Max
(Note 7) Units
V
OS
Input Offset Voltage 1.2 7 mV
TCV
OS
Input Offset Voltage Average
Drift
2 µV/˚C
I
B
Input Bias Current 1.7 50 nA
I
OS
Input Offset Current 0.6 40 nA
CMRR Common Mode Rejection Ratio 0V V
CM
1.7V 50 70 dB
PSRR Power Supply Rejection Ratio 2.7V V
+
5V
V
O
= 1V, V
CM
=1V
50 65 dB
V
CM
Input Common-Mode Voltage
Range
For CMRR 50 dB 0 −0.2 V
1.9 1.7
V
O
Output Swing R
L
= 100 kto 1.35V V
+
−100 V
+
−3 mV
80 180 mV
I
S
Supply Current LPV321 4 8 µA
LPV358
Both Amplifiers
816µA
LPV324
All Four Amplifiers
16 24 µA
2.7V AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25˚C, V
+
= 2.7V, V
= 0V, V
CM
= 1.0V, V
O
=V
+
/2 and R
L
>1M.
Symbol Parameter Conditions Min
(Note 7)
Typ
(Note 6)
Max
(Note 7)
Units
GBWP Gain-Bandwidth Product C
L
= 22 pF 112 kHz
Φ
m
Phase Margin 97 Deg
G
m
Gain Margin 35 dB
e
n
Input-Referred Voltage Noise f = 1 kHz 178
i
n
Input-Referred Current Noise f = 1 kHz 0.50
LPV321 Single/LPV358 Dual/LPV324 Quad
www.national.com 2
5V DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25˚C, V
+
= 5V, V
= 0V, V
CM
= 2.0V, V
O
=V
+
/2 and R
L
>1M.
Boldface limits apply at the temperature extremes.
Symbol Parameter Conditions
Min
(Note 7)
Typ
(Note 6)
Max
(Note 7) Units
V
OS
Input Offset Voltage 1.5 7
10 mV
TCV
OS
Input Offset Voltage Average
Drift
2 µV/˚C
I
B
Input Bias Current 2 50
60 nA
I
OS
Input Offset Current 0.6 40
50 nA
CMRR Common Mode Rejection Ratio 0V V
CM
4V 50 71 dB
PSRR Power Supply Rejection Ratio 2.7V V
+
5V
V
O
= 1V, V
CM
=1V
50 65 dB
V
CM
Input Common-Mode Voltage
Range
For CMRR 50 dB 0 −0.2 V
4.2 4
A
V
Large Signal Voltage Gain
(Note 8)
R
L
= 100 k15
10
100 V/mV
V
O
Output Swing R
L
= 100 kto 2.5V V
+
−100
V
+
−200
V
+
−3.5
mV
90 180
220
I
O
Output Short Circuit Current
Sourcing
LPV324, LPV358, and LPV321
V
O
=0V
216 mA
Output Short Circuit Current
Sinking
LPV321
V
O
=5V
20 60 mA
LPV324 and LPV358
V
O
=5V
11 16 mA
I
S
Supply Current LPV321 9 12
15 µA
LPV358
Both amplifiers
15 20
24 µA
LPV324
All four amplifiers
28 42
46 µA
5V AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25˚C, V
+
= 5V, V
= 0V, V
CM
= 2.0V, V
O
=V
+
/2 and R
L
>1M.
Boldface limits apply at the temperature extremes.
Symbol Parameter Conditions Min
(Note 7)
Typ
(Note 6)
Min
(Note 7)
Units
SR Slew Rate (Note 9) 0.1 V/µs
GBWP Gain-Bandwidth Product C
L
= 22 pF 152 kHz
Φ
m
Phase Margin 87 Deg
G
m
Gain Margin 19 dB
e
n
Input-Referred Voltage Noise f = 1 kHz, 146
i
n
Input-Referred Current Noise f = 1 kHz 0.30
LPV321 Single/LPV358 Dual/LPV324 Quad
www.national.com3
5V AC Electrical Characteristics (Continued)
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.
Note 2: Human Body Model, applicable std. MIL-STD-883, Method 3015.7. Machine Model, applicable std. JESD22-A115-A (ESD MM std. of JEDEC)
Field-Induced Charge-Device Model, applicable std. JESD22-C101-C (ESD FICDM std. of JEDEC).
Note 3: Shorting output to V+will adversely affect reliability.
Note 4: Shorting output to Vwill adversely affect reliability.
Note 5: The maximum power dissipation is a function of TJ(MAX),θJA. The maximum allowable power dissipation at any ambient temperature is
PD=(T
J(MAX) –T
A)/ θJA. All numbers apply for packages soldered directly onto a PC Board.
Note 6: Typical values represent the most likely parametric norm as determined at the time of characterization. Actual typical values may vary over time and will
also depend on the application and configuration. The typical values are not tested and are not guaranteed on shipped production material.
Note 7: All limits are guaranteed by testing or statistical analysis.
Note 8: RLis connected to V -. The output voltage is 0.5V VO4.5V.
Note 9: Connected as voltage follower with 3V step input. Number specified is the slower of the positive and negative slew rates.
Note 10: All numbers are typical, and apply for packages soldered directly onto a PC board in still air.
Ordering Information
Package
Temperature Range
Packaging Marking Transport Media NSC DrawingIndustrial
−40˚C to +85˚C
5-Pin SC70 LPV321M7 A19 1k Units Tape and Reel MAA05A
LPV321M7X A19 3k Units Tape and Reel
5-Pin SOT23 LPV321M5 A27A 1k Units Tape and Reel MF05A
LPV321M5X A27A 3k Units Tape and Reel
8-Pin SOIC LPV358M LPV358M Rails M08A
LPV358MX LPV358M 2.5k Units Tape and Reel
8-Pin MSOP LPV358MM P358 1k Units Tape and Reel MUA08A
LPV358MMX P358 3.5k Units Tape and Reel
14-Pin SOIC LPV324M LPV324M Rails M14A
LPV324MX LPV324M 2.5k Units Tape and Reel
14-Pin TSSOP LPV324MT LPV324MT Rails MTC14
LPV324MTX LPV324MT 2.5k Units Tape and Reel
LPV321 Single/LPV358 Dual/LPV324 Quad
www.national.com 4
Typical Performance Characteristics Unless otherwise specified, V
S
= +5V, single supply,
T
A
= 25˚C.
Supply Current vs. Supply Voltage (LPV321) Input Current vs. Temperature
100920B4 100920B5
Sourcing Current vs. Output Voltage Sourcing Current vs. Output Voltage
10092041 10092042
Sinking Current vs. Output Voltage Sinking Current vs. Output Voltage
10092043 10092044
LPV321 Single/LPV358 Dual/LPV324 Quad
www.national.com5
Typical Performance Characteristics Unless otherwise specified, V
S
= +5V, single supply,
TA= 25˚C. (Continued)
Output Voltage Swing vs. Supply Voltage
Input Voltage Noise vs.
Frequency
100920B6 10092056
Input Current Noise vs
Frequency Input Current Noise vs Frequency
10092070 10092068
Crosstalk Rejection vs. Frequency PSRR vs. Frequency
10092073 10092072
LPV321 Single/LPV358 Dual/LPV324 Quad
www.national.com 6
Typical Performance Characteristics Unless otherwise specified, V
S
= +5V, single supply,
TA= 25˚C. (Continued)
CMRR vs. Frequency CMRR vs. Input Common Mode Voltage
10092063 10092064
CMRR vs. Input Common Mode Voltage V
OS
vs. V
CM
10092065 10092045
V
OS
vs. V
CM
Input Voltage vs. Output Voltage
10092046 10092069
LPV321 Single/LPV358 Dual/LPV324 Quad
www.national.com7
Typical Performance Characteristics Unless otherwise specified, V
S
= +5V, single supply,
TA= 25˚C. (Continued)
Input Voltage vs. Output Voltage Open Loop Frequency Response
10092071 10092052
Open Loop Frequency Response Gain and Phase vs. Capacitive Load
10092051 10092054
Gain and Phase vs. Capacitive Load Slew Rate vs. Supply Voltage
10092053 10092055
LPV321 Single/LPV358 Dual/LPV324 Quad
www.national.com 8
Typical Performance Characteristics Unless otherwise specified, V
S
= +5V, single supply,
TA= 25˚C. (Continued)
Non-Inverting Large Signal Pulse Response Non-Inverting Small Signal Pulse Response
10092050 10092049
Inverting Large Signal Pulse Response Inverting Small Signal Pulse Response
10092047 10092048
Stability vs. Capacitive Load Stability vs. Capacitive Load
10092061
10092060
LPV321 Single/LPV358 Dual/LPV324 Quad
www.national.com9
Typical Performance Characteristics Unless otherwise specified, V
S
= +5V, single supply,
TA= 25˚C. (Continued)
Stability vs. Capacitive Load Stability vs. Capacitive Load
10092059
10092058
THD vs. Frequency Open Loop Output Impedance vs Frequency
10092062
10092074
Short Circuit Current vs. Temperature (Sinking) Short Circuit Current vs. Temperature (Sourcing)
100920B7 100920B8
LPV321 Single/LPV358 Dual/LPV324 Quad
www.national.com 10
Application Information
BENEFITS OF THE LPV321/358/324
Size
The small footprints of the LPV321/358/324 packages save
space on printed circuit boards, and enable the design of
smaller electronic products, such as cellular phones, pagers,
or other portable systems. The low profile of the LPV321/
358/324 make them possible to use in PCMCIA type III
cards.
Signal Integrity
Signals can pick up noise between the signal source and the
amplifier. By using a physically smaller amplifier package,
the LPV321/358/324 can be placed closer to the signal
source, reducing noise pickup and increasing signal integrity.
Simplified Board Layout
These products help you to avoid using long pc traces in
your pc board layout. This means that no additional compo-
nents, such as capacitors and resistors, are needed to filter
out the unwanted signals due to the interference between
the long pc traces.
Low Supply Current
These devices will help you to maximize battery life. They
are ideal for battery powered systems.
Low Supply Voltage
National provides guaranteed performance at 2.7V and 5V.
These guarantees ensure operation throughout the battery
lifetime.
Rail-to-Rail Output
Rail-to-rail output swing provides maximum possible dy-
namic range at the output. This is particularly important
when operating on low supply voltages.
Input Includes Ground
Allows direct sensing near GND in single supply operation.
The differential input voltage may be larger than V
+
without
damaging the device. Protection should be provided to pre-
vent the input voltages from going negative more than −0.3V
(at 25˚C). An input clamp diode with a resistor to the IC input
terminal can be used.
CAPACITIVE LOAD TOLERANCE
The LPV321/358/324 can directly drive 200 pF in unity-gain
without oscillation. The unity-gain follower is the most sensi-
tive configuration to capacitive loading. Direct capacitive
loading reduces the phase margin of amplifiers. The combi-
nation of the amplifier’s output impedance and the capacitive
load induces phase lag. This results in either an under-
damped pulse response or oscillation. To drive a heavier
capacitive load, circuit in Figure 1 can be used.
In Figure 1, the isolation resistor R
ISO
and the load capacitor
C
L
form a pole to increase stability by adding more phase
margin to the overall system. The desired performance de-
pends on the value of R
ISO
. The bigger the R
ISO
resistor
value, the more stable V
OUT
will be. Figure 2 is an output
waveform of Figure 1 using 100 kfor R
ISO
and 1000 pF for
C
L
.
The circuit in Figure 3 is an improvement to the one in Figure
1because it provides DC accuracy as well as AC stability. If
there were a load resistor in Figure 1, the output would be
voltage divided by R
ISO
and the load resistor. Instead, in
Figure 3,R
F
provides the DC accuracy by using feed-
forward techniques to connect V
IN
to R
L
. Caution is needed
in choosing the value of R
F
due to the input bias current of
the LPV321/358/324. C
F
and R
ISO
serve to counteract the
loss of phase margin by feeding the high frequency compo-
nent of the output signal back to the amplifier’s inverting
input, thereby preserving phase margin in the overall feed-
back loop. Increased capacitive drive is possible by increas-
ing the value of C
F
. This in turn will slow down the pulse
response.
10092004
FIGURE 1. Indirectly Driving A Capacitive Load Using
Resistive Isolation
10092075
FIGURE 2. Pulse Response of the LPV324 Circuit in
Figure 1
LPV321 Single/LPV358 Dual/LPV324 Quad
www.national.com11
Application Information (Continued)
INPUT BIAS CURRENT CANCELLATION
The LPV321/358/324 family has a bipolar input stage. The
typical input bias current of LPV321/358/324 is 1.5 nA with
5V supply. Thus a 100 kinput resistor will cause 0.15 mV
of error voltage. By balancing the resistor values at both
inverting and non-inverting inputs, the error caused by the
amplifier’s input bias current will be reduced. The circuit in
Figure 4 shows how to cancel the error caused by input bias
current.
TYPICAL SINGLE-SUPPLY APPLICATION CIRCUITS
Difference Amplifier
The difference amplifier allows the subtraction of two volt-
ages or, as a special case, the cancellation of a signal
common to two inputs. It is useful as a computational ampli-
fier, in making a differential to single-ended conversion or in
rejecting a common mode signal.
Instrumentation Circuits
The input impedance of the previous difference amplifier is
set by the resistor R
1
,R
2
,R
3
, and R
4
. To eliminate the
problems of low input impedance, one way is to use a
voltage follower ahead of each input as shown in the follow-
ing two instrumentation amplifiers.
Three-op-amp Instrumentation Amplifier
The quad LPV324 can be used to build a three-op-amp
instrumentation amplifier as shown in Figure 6
The first stage of this instrumentation amplifier is a
differential-input, differential-output amplifier, with two volt-
age followers. These two voltage followers assure that the
input impedance is over 100 M. The gain of this instrumen-
tation amplifier is set by the ratio of R
2
/R
1
.R
3
should equal
R
1
and R
4
equal R
2
. Matching of R
3
to R
1
and R
4
to R
2
affects the CMRR. For good CMRR over temperature, low
drift resistors should be used. Making R
4
Slightly smaller
than R
2
and adding a trim pot equal to twice the difference
between R
2
and R
4
will allow the CMRR to be adjusted for
optimum.
10092005
FIGURE 3. Indirectly Driving A Capacitive Load with
DC Accuracy
10092006
FIGURE 4. Cancelling the Error Caused by Input Bias
Current
10092007
FIGURE 5. Difference Amplifier
10092085
FIGURE 6. Three-op-amp Instrumentation Amplifier
LPV321 Single/LPV358 Dual/LPV324 Quad
www.national.com 12
Application Information (Continued)
Two-op-amp Instrumentation Amplifier
A two-op-amp instrumentation amplifier can also be used to
make a high-input-impedance DC differential amplifier (Fig-
ure 7). As in the three-op-amp circuit, this instrumentation
amplifier requires precise resistor matching for good CMRR.
R
4
should equal to R
1
and R
3
should equal R
2
.
Single-Supply Inverting Amplifier
There may be cases where the input signal going into the
amplifier is negative. Because the amplifier is operating in
single supply voltage, a voltage divider using R
3
and R
4
is
implemented to bias the amplifier so the input signal is within
the input common-common voltage range of the amplifier.
The capacitor C
1
is placed between the inverting input and
resistor R
1
to block the DC signal going into the AC signal
source, V
IN
. The values of R
1
and C
1
affect the cutoff fre-
quency, fc = 1/2πR
1
C
1
.
As a result, the output signal is centered around mid-supply
(if the voltage divider provides V
+
/2 at the non-inverting
input). The output can swing to both rails, maximizing the
signal-to-noise ratio in a low voltage system.
ACTIVE FILTER
Simple Low-Pass Active Filter
The simple low-pass filter is shown in Figure 9. Its low-
frequency gain(ωo) is defined by −R
3
/R
1
. This allows
low-frequency gains other than unity to be obtained. The
filter has a −20 dB/decade roll-off after its corner frequency
fc. R
2
should be chosen equal to the parallel combination of
R
1
and R
3
to minimize errors due to bais current. The
frequency response of the filter is shown in Figure 10
Note that the single-op-amp active filters are used in to the
applications that require low quality factor, Q (10), low
frequency (5 kHz), and low gain (10), or a small value for
the product of gain times Q (100). The op amp should have
an open loop voltage gain at the highest frequency of inter-
est at least 50 times larger than the gain of the filter at this
frequency. In addition, the selected op amp should have a
slew rate that meets the following requirement:
Slew Rate 0.5x(ω
H
V
OPP
)X10
−6
V/µsec
Where ω
H
is the highest frequency of interest, and V
OPP
is
the output peak-to-peak voltage.
10092011
FIGURE 7. Two-op-amp Instrumentation Amplifier
10092013
FIGURE 8. Single-Supply Inverting Amplifier
10092014
FIGURE 9. Simple Low-Pass Active Filter
10092015
FIGURE 10. Frequency Response of Simple Low-pass
Active Filter in Figure 9
LPV321 Single/LPV358 Dual/LPV324 Quad
www.national.com13
SC70-5 Tape and Reel Specification
100920B3
SOT-23-5 Tape and Reel Specification
TAPE FORMAT
Tape Section # Cavities Cavity Status Cover Tape Status
Leader 0 (min) Empty Sealed
(Start End) 75 (min) Empty Sealed
Carrier 3000 Filled Sealed
250 Filled Sealed
Trailer 125 (min) Empty Sealed
(Hub End) 0 (min) Empty Sealed
LPV321 Single/LPV358 Dual/LPV324 Quad
www.national.com 14
SOT-23-5 Tape and Reel Specification (Continued)
TAPE DIMENSIONS
100920B1
8 mm 0.130 0.124 0.130 0.126 0.138 ±0.002 0.055 ±0.004 0.157 0.315 ±0.012
(3.3) (3.15) (3.3) (3.2) (3.5 ±0.05) (1.4 ±0.11) (4) (8 ±0.3)
Tape Size DIM A DIM Ao DIM B DIM Bo DIM F DIM Ko DIM P1 DIM W
LPV321 Single/LPV358 Dual/LPV324 Quad
www.national.com15
SOT-23-5 Tape and Reel Specification (Continued)
REEL DIMENSIONS
100920B2
8 mm 7.00 0.059 0.512 0.795 2.165 0.331 + 0.059/−0.000 0.567 W1+ 0.078/−0.039
330.00 1.50 13.00 20.20 55.00 8.40 + 1.50/−0.00 14.40 W1 + 2.00/−1.00
Tape Size A B C D N W1 W2 W3
LPV321 Single/LPV358 Dual/LPV324 Quad
www.national.com 16
Physical Dimensions
Physical Dimensions inches (millimeters) unless otherwise noted
5-Pin SC70
NS Package Number MAA05A
5-Pin SOT23
NS Package Number MF05A
LPV321 Single/LPV358 Dual/LPV324 Quad
www.national.com17
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
8-Pin SOIC
NS Package Number M08A
8-Pin MSOP
NS Package Number MUA08A
LPV321 Single/LPV358 Dual/LPV324 Quad
www.national.com 18
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
14-Pin SOIC
NS Package Number M14A
14-Pin TSSOP
NS Package Number MTC14
LPV321 Single/LPV358 Dual/LPV324 Quad
www.national.com19
Notes
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.
For the most current product information visit us at www.national.com.
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT 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.
BANNED SUBSTANCE COMPLIANCE
National Semiconductor follows the provisions of the Product Stewardship Guide for Customers (CSP-9-111C2) and Banned Substances
and Materials of Interest Specification (CSP-9-111S2) for regulatory environmental compliance. Details may be found at:
www.national.com/quality/green.
Lead free products are RoHS compliant.
National Semiconductor
Americas Customer
Support Center
Email: new.feedback@nsc.com
Tel: 1-800-272-9959
National Semiconductor
Europe Customer Support Center
Fax: +49 (0) 180-530 85 86
Email: europe.support@nsc.com
Deutsch Tel: +49 (0) 69 9508 6208
English Tel: +44 (0) 870 24 0 2171
Français Tel: +33 (0) 1 41 91 8790
National Semiconductor
Asia Pacific Customer
Support Center
Email: ap.support@nsc.com
National Semiconductor
Japan Customer Support Center
Fax: 81-3-5639-7507
Email: jpn.feedback@nsc.com
Tel: 81-3-5639-7560
www.national.com
LPV321 Single/LPV358 Dual/LPV324 Quad General Purpose, Low Voltage, Low Power, Rail-to-Rail
Output Operational Amplifiers