LMV931 Single/LMV932 Dual/
LMV934 Quad
August 13, 2012
1.8V, RRIO Operational Amplifiers
General Description
The LMV931/LMV932/LMV934 are low voltage, low power
operational amplifiers. LMV931/LMV932/LMV934 operate
from +1.8V to +5.5V supply voltages and have rail-to-rail input
and output. LMV931/LMV932/LMV934 input common mode
voltage extends 200mV beyond the supplies which enables
user enhanced functionality beyond the supply voltage range.
The output can swing rail-to-rail unloaded and within 105mV
from the rail with 600 load at 1.8V supply. The LMV931/
LMV932/LMV934 are optimized to work at 1.8V which make
them ideal for portable two-cell battery powered systems and
single cell Li-Ion systems.
LMV931/LMV932/LMV934 exhibit excellent speed-power ra-
tio, achieving 1.4MHz gain bandwidth product at 1.8V supply
voltage with very low supply current. The LMV931/LMV932/
LMV934 are capable of driving a 600 load and up to 1000pF
capacitive load with minimal ringing. LMV931/LMV932/
LMV934 have a high DC gain of 101dB, making them suitable
for low frequency applications.
The single LMV931 is offered in space saving 5-Pin SC70 and
SOT23 packages. The dual LMV932 are in 8-Pin MSOP and
SOIC packages and the quad LMV934 are in 14-Pin TSSOP
and SOIC packages. These small packages are ideal solu-
tions for area constrained PC boards and portable electronics
such as cellular phones and PDAs.
Features
(Typical 1.8V Supply Values; Unless Otherwise Noted)
Guaranteed 1.8V, 2.7V and 5V specifications
Output swing
w/600 load 80mV from rail
w/2k load 30mV from rail
VCM 200mV beyond rails
Supply current (per channel) 100μA
Gain bandwidth product 1.4MHz
Maximum VOS 4.0mV
Ultra tiny packages
Temperature range −40°C to 125°C
Applications
Consumer communication
Consumer computing
PDAs
Audio pre-amp
Portable/battery-powered electronic equipment
Supply current monitoring
Battery monitoring
Typical Application
200326h0
© 2012 Texas Instruments Incorporated 200326 SNOS993I www.ti.com
LMV931 Single/LMV932 Dual/LMV934 Quad 1.8V, RRIO Operational Amplifiers
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the Texas Instruments Sales Office/
Distributors for availability and specifications.
ESD Tolerance (Note 2)
Charged Device Model 750V
Machine Model 200V
Human Body Model 2000V
Supply Voltage (V+–V)6V
Differential Input Voltage ± Supply Voltage
Voltage at Input/Output Pins V++0.3V, V- -0.3V
Storage Temperature Range −65°C to 150°C
Junction Temperature (Note 4) 150°C
For soldering specifications:
See product folder at www.ti.com and www.ti.com/lit/an/
snoa549c/snoa549c.pdf.
Operating Ratings (Note 1)
Supply Voltage Range 1.8V to 5.5V
Temperature Range −40°C to 125°C
Thermal Resistance (θJA)
5-Pin SC70 414°C/W
5-Pin SOT23 265°C/W
8-Pin MSOP 235°C/W
8-Pin SOIC 175°C/W
14-Pin TSSOP 155°C/W
14-Pin SOIC 127°C/W
1.8V DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ = 25°C. V+ = 1.8V, V = 0V, VCM = V+/2, VO = V+/2 and
RL > 1 MΩ. Boldface limits apply at the temperature extremes. See (Note 10)
Symbol Parameter Condition Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
VOS Input Offset Voltage LMV931 (Single) 1 4
6mV
LMV932 (Dual)
LMV934 (Quad)
1 5.5
7.5 mV
TCVOS Input Offset Voltage Average
Drift
5.5 μV/°C
IBInput Bias Current 15 35
50 nA
IOS Input Offset Current 13 25
40 nA
ISSupply Current (per channel) 103 185
205 μA
CMRR Common Mode Rejection Ratio LMV931, 0 VCM 0.6V
1.4V VCM 1.8V (Note 8)
60
55
78
dB
LMV932 and LMV934
0 VCM 0.6V
1.4V VCM 1.8V (Note 8)
55
50
76
−0.2V VCM 0V
1.8V VCM 2.0V
50 72
PSRR Power Supply Rejection Ratio 1.8V V+ 5V 75
70
100 dB
CMVR Input Common-Mode Voltage
Range
For CMRR
Range 50dB
TA = 25°C V−0.2 −0.2 to 2.1 V+ +0.2
V
TA −40°C to 85°
C
VV+
TA = 125°C V +0.2 V+ −0.2
AVLarge Signal Voltage Gain
LMV931 (Single)
RL = 600Ω to 0.9V,
VO = 0.2V to 1.6V, VCM = 0.5V
77
73
101
dB
RL = 2k to 0.9V,
VO = 0.2V to 1.6V, VCM = 0.5V
80
75
105
Large Signal Voltage Gain
LMV932 (Dual)
LMV934 (Quad)
RL = 600Ω to 0.9V,
VO = 0.2V to 1.6V, VCM = 0.5V
75
72
90
dB
RL = 2k to 0.9V,
VO = 0.2V to 1.6V, VCM = 0.5V
78
75
100
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LMV931 Single/LMV932 Dual/LMV934 Quad
Symbol Parameter Condition Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
VOOutput Swing RL = 600Ω to 0.9V
VIN = ±100mV
1.65
1.63
1.72
V
0.077 0.105
0.120
RL = 2k to 0.9V
VIN = ±100mV
1.75
1.74
1.77
0.024 0.035
0.04
IOOutput Short Circuit Current
(Note 3)
Sourcing, VO = 0V
VIN = 100mV
4
3.3
8
mA
Sinking, VO = 1.8V
VIN = −100mV
7
5
9
1.8V AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ = 25°C. V+ = 1.8V, V = 0V, VCM = V+/2, VO = V+/2 and RL > 1 MΩ.
Boldface limits apply at the temperature extremes. See (Note 10)
Symbol Parameter Conditions Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
SR Slew Rate (Note 7) 0.35 V/μs
GBW Gain-Bandwidth Product 1.4 MHz
ΦmPhase Margin 67 deg
GmGain Margin 7 dB
enInput-Referred Voltage Noise f = 10 kHz, VCM = 0.5V 60
inInput-Referred Current Noise f = 10 kHz 0.08
THD Total Harmonic Distortion f = 1kHz, AV = +1
RL = 600Ω, VIN = 1 VPP
0.023 %
Amp-to-Amp Isolation (Note 9) 123 dB
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LMV931 Single/LMV932 Dual/LMV934 Quad
2.7V DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ = 25°C. V+ = 2.7V, V = 0V, VCM = V+/2, VO = V+/2 and
RL > 1 MΩ. Boldface limits apply at the temperature extremes. See (Note 10)
Symbol Parameter Condition Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
VOS Input Offset Voltage LMV931 (Single) 1 4
6mV
LMV932 (Dual)
LMV934 (Quad)
1 5.5
7.5 mV
TCVOS Input Offset Voltage Average
Drift
5.5 μV/°C
IBInput Bias Current 15 35
50 nA
IOS Input Offset Current 8 25
40 nA
ISSupply Current (per channel) 105 190
210 μA
CMRR Common Mode Rejection Ratio LMV931, 0 VCM 1.5V
2.3V VCM 2.7V (Note 8)
60
55
81
dB
LMV932 and LMV934
0 VCM 1.5V
2.3V VCM 2.7V (Note 8)
55
50
80
−0.2V VCM 0V
2.7V VCM 2.9V
50 74
PSRR Power Supply Rejection Ratio 1.8V V+ 5V
VCM = 0.5V
75
70
100 dB
VCM Input Common-Mode Voltage
Range
For CMRR
Range 50dB
TA = 25°C V−0.2 −0.2 to 3.0 V+ +0.2
V
TA = −40°C to
85°C
VV+
TA = 125°C V +0.2 V+ −0.2
AVLarge Signal Voltage Gain
LMV931 (Single)
RL = 600Ω to 1.35V,
VO = 0.2V to 2.5V
87
86
104
dB
RL = 2k to 1.35V,
VO = 0.2V to 2.5V
92
91
110
Large Signal Voltage Gain
LMV932 (Dual)
LMV934 (Quad)
RL = 600Ω to 1.35V,
VO = 0.2V to 2.5V
78
75
90
dB
RL = 2k to 1.35V,
VO = 0.2V to 2.5V
81
78
100
VOOutput Swing RL = 600Ω to 1.35V
VIN = ±100mV
2.55
2.53
2.62
V
0.083 0.110
0.130
RL = 2k to 1.35V
VIN = ±100mV
2.65
2.64
2.675
0.025 0.04
0.045
IOOutput Short Circuit Current
(Note 3)
Sourcing, VO = 0V
VIN = 100mV
20
15
30
mA
Sinking, VO = 0V
VIN = −100mV
18
12
25
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LMV931 Single/LMV932 Dual/LMV934 Quad
2.7V AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ = 25°C. V+ = 2.7V, V = 0V, VCM = 1.0V, VO = 1.35V and RL > 1 MΩ.
Boldface limits apply at the temperature extremes. See (Note 10)
Symbol Parameter Conditions Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
SR Slew Rate (Note 7) 0.4 V/µs
GBW Gain-Bandwidth Product 1.4 MHz
ΦmPhase Margin 70 deg
GmGain Margin 7.5 dB
enInput-Referred Voltage Noise f = 10 kHz, VCM = 0.5V 57
inInput-Referred Current Noise f = 10 kHz 0.08
THD Total Harmonic Distortion f = 1kHz, AV = +1
RL = 600Ω, VIN = 1VPP
0.022 %
Amp-to-Amp Isolation (Note 9) 123 dB
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LMV931 Single/LMV932 Dual/LMV934 Quad
5V DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ = 25°C. V+ = 5V, V = 0V, VCM = V+/2, VO = V+/2 and
RL > 1 MΩ. Boldface limits apply at the temperature extremes. See (Note 10)
Symbol Parameter Condition Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
VOS Input Offset Voltage LMV931 (Single) 1 4
6mV
LMV932 (Dual)
LMV934 (Quad)
1 5.5
7.5 mV
TCVOS Input Offset Voltage Average
Drift
5.5 μV/°C
IBInput Bias Current 14 35
50 nA
IOS Input Offset Current 9 25
40 nA
ISSupply Current (per channel) 116 210
230 μA
CMRR Common Mode Rejection Ratio 0 VCM 3.8V
4.6V VCM 5.0V (Note 8)
60
55
86
dB
−0.2V VCM 0V
5.0V VCM 5.2V
50 78
PSRR Power Supply Rejection Ratio 1.8V V+ 5V
VCM = 0.5V
75
70
100 dB
CMVR Input Common-Mode Voltage
Range
For CMRR
Range 50dB
TA = 25°C V −0.2 −0.2 to 5.3 V+ +0.2
V
TA = −40°C to
85°C
VV+
TA = 125°C V +0.3 V+ −0.3
AVLarge Signal Voltage Gain
LMV931 (Single)
RL = 600Ω to 2.5V,
VO = 0.2V to 4.8V
88
87
102
dB
RL = 2k to 2.5V,
VO = 0.2V to 4.8V
94
93
113
Large Signal Voltage Gain
LMV932 (Dual)
LMV934 (Quad)
RL = 600Ω to 2.5V,
VO = 0.2V to 4.8V
81
78
90
dB
RL = 2k to 2.5V,
VO = 0.2V to 4.8V
85
82
100
VOOutput Swing RL = 600Ω to 2.5V
VIN = ±100mV
4.855
4.835
4.890
V
0.120 0.160
0.180
RL = 2k to 2.5V
VIN = ±100mV
4.945
4.935
4.967
0.037 0.065
0.075
IOOutput Short Circuit Current
(Note 3)
LMV931, Sourcing, VO = 0V
VIN = 100mV
80
68
100
mA
Sinking, VO = 5V
VIN = −100mV
58
45
65
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LMV931 Single/LMV932 Dual/LMV934 Quad
5V AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ = 25°C. V+ = 5V, V = 0V, VCM = V+/2, VO = 2.5V and R L > 1 MΩ.
Boldface limits apply at the temperature extremes. See (Note 10)
Symbol Parameter Conditions Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
SR Slew Rate (Note 7) 0.42 V/µs
GBW Gain-Bandwidth Product 1.5 MHz
ΦmPhase Margin 71 deg
GmGain Margin 8 dB
enInput-Referred Voltage Noise f = 10 kHz, VCM = 1V 50
inInput-Referred Current Noise f = 10 kHz 0.08
THD Total Harmonic Distortion f = 1kHz, AV = +1
RL = 600Ω, VO = 1V PP
0.022 %
Amp-to-Amp Isolation (Note 9) 123 dB
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: Applies to both single-supply and split-supply operation. Continuous short circuit operation at elevated ambient temperature can result in exceeding the
maximum allowed junction temperature of 150°C. Output currents in excess of 45mA over long term may adversely affect reliability.
Note 4: The maximum power dissipation is a function of TJ(MAX), θJA and TA. The maximum allowable power dissipation at any ambient temperature is
PD = (TJ(MAX) – TA)/ θJA. All numbers apply for packages soldered directly onto a PC Board.
Note 5: 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 6: All limits are guaranteed by testing or statistical analysis.
Note 7: Connected as voltage follower with input step from V to V+. Number specified is the slower of the positive and negative slew rates.
Note 8: For guaranteed temperature ranges, see Input Common-Mode Voltage Range specifications.
Note 9: Input referred, RL = 100k connected to V+/2. Each amp excited in turn with 1kHz to produce VO = 3VPP (For Supply Voltages <3V, VO = V+).
Note 10: Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very limited self-heating
of the device such that TJ = TA. No guarantee of parametric performance is indicated in the electrical tables under conditions of internal self-heating where TJ >
TA. See Applications section for information of temperature derating of the device. Absolute Maximum Ratings indicated junction temperature limits beyond which
the device may be permanently degraded, either mechanically or electrically.
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LMV931 Single/LMV932 Dual/LMV934 Quad
Connection Diagrams
5-Pin SC70-5/SOT23-5
(LMV931)
200326ao
Top View
8-Pin MSOP/SOIC
(LMV932)
200326g12
Top View
14-Pin TSSOP/SOIC
(LMV934)
200326g13
Top View
Ordering Information
Package Part Number Packaging Marking Transport Media NSC Drawing
5-Pin SC70 LMV931MG A74 1k Units Tape and Reel MAA05A
LMV931MGX 3k Units Tape and Reel
5-Pin SOT23 LMV931MF A79A 1k Units Tape and Reel MF05A
LMV931MFX 3k Units Tape and Reel
8-Pin MSOP LMV932MM A86A 1k Units Tape and Reel MUA08A
LMV932MMX 3.5k Units Tape and Reel
8-Pin SOIC LMV932MA LMV932MA Rails M08A
LMV932MAX 2.5k Units Tape and Reel
14-Pin TSSOP LMV934MT LMV934MT Rails MTC14
LMV934MTX 2.5k Units Tape and Reel
14-Pin SOIC LMV934MA LMV934MA Rails M14A
LMV934MAX 2.5k Units Tape and Reel
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LMV931 Single/LMV932 Dual/LMV934 Quad
Typical Performance Characteristics Unless otherwise specified, VS = +5V, single supply, TA = 25°C.
Supply Current vs. Supply Voltage (LMV931)
20032622
Sourcing Current vs. Output Voltage
20032625
Sinking Current vs. Output Voltage
20032628
Output Voltage Swing vs. Supply Voltage
20032649
Output Voltage Swing vs. Supply Voltage
20032650
Gain and Phase vs. Frequency
200326g8
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LMV931 Single/LMV932 Dual/LMV934 Quad
Gain and Phase vs. Frequency
200326g9
Gain and Phase vs. Frequency
200326g10
Gain and Phase vs. Frequency
200326g11
CMRR vs. Frequency
20032639
PSRR vs. Frequency
20032656
Input Voltage Noise vs. Frequency
20032658
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LMV931 Single/LMV932 Dual/LMV934 Quad
Input Current Noise vs. Frequency
20032666
THD vs. Frequency
20032667
THD vs. Frequency
20032668
Slew Rate vs. Supply Voltage
20032669
Small Signal Non-Inverting Response
20032670
Small Signal Non-Inverting Response
20032671
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LMV931 Single/LMV932 Dual/LMV934 Quad
Small Signal Non-Inverting Response
20032672
Large Signal Non-Inverting Response
20032673
Large Signal Non-Inverting Response
20032674
Large Signal Non-Inverting Response
20032675
Short Circuit Current vs. Temperature (Sinking)
20032676
Short Circuit Current vs. Temperature (Sourcing)
20032677
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LMV931 Single/LMV932 Dual/LMV934 Quad
Offset Voltage vs. Common Mode Range
20032636
Offset Voltage vs. Common Mode Range
20032637
Offset Voltage vs. Common Mode Range
20032638
Application Note
INPUT AND OUTPUT STAGE
The rail-to-rail input stage of this family provides more flexi-
bility for the designer. The LMV931/LMV932/LMV934 use a
complimentary PNP and NPN input stage in which the PNP
stage senses common mode voltage near V and the NPN
stage senses common mode voltage near V+. The transition
from the PNP stage to NPN stage occurs 1V below V+. Since
both input stages have their own offset voltage, the offset of
the amplifier becomes a function of the input common mode
voltage and has a crossover point at 1V below V+.
This VOS crossover point can create problems for both DC and
AC coupled signals if proper care is not taken. Large input
signals that include the VOS crossover point will cause distor-
tion in the output signal. One way to avoid such distortion is
to keep the signal away from the crossover. For example, in
a unity gain buffer configuration and with VS = 5V, a 5V peak-
to-peak signal will contain input-crossover distortion while a
3V peak-to-peak signal centered at 1.5V will not contain input-
crossover distortion as it avoids the crossover point. Another
way to avoid large signal distortion is to use a gain of −1 circuit
which avoids any voltage excursions at the input terminals of
the amplifier. In that circuit, the common mode DC voltage
can be set at a level away from the VOS cross-over point. For
small signals, this transition in VOS shows up as a VCM de-
pendent spurious signal in series with the input signal and can
effectively degrade small signal parameters such as gain and
common mode rejection ratio. To resolve this problem, the
small signal should be placed such that it avoids the VOS
crossover point. In addition to the rail-to-rail performance, the
output stage can provide enough output current to drive
600 loads. Because of the high current capability, care
should be taken not to exceed the 150°C maximum junction
temperature specification.
INPUT BIAS CURRENT CONSIDERATION
The LMV931/LMV932/LMV934 family has a complementary
bipolar input stage. The typical input bias current (IB) is 15nA.
The input bias current can develop a significant offset voltage.
This offset is primarily due to IB flowing through the negative
feedback resistor, RF. For example, if IB is 50nA and RF is
100k, then an offset voltage of 5mV will develop (VOS = IB x
RF). Using a compensation resistor (RC), as shown in Figure
1, cancels this effect. But the input offset current (IOS) will still
contribute to an offset voltage in the same manner.
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LMV931 Single/LMV932 Dual/LMV934 Quad
20032659
FIGURE 1. Canceling the Offset Voltage due to Input Bias
Current
Typical Applications
HIGH SIDE CURRENT SENSING
The high side current sensing circuit (Figure 2) is commonly
used in a battery charger to monitor charging current to pre-
vent over charging. A sense resistor RSENSE is connected to
the battery directly. This system requires an op amp with rail-
to-rail input. The LMV931/LMV932/LMV934 are ideal for this
application because its common mode input range goes up
to the rail.
200326h0
FIGURE 2. High Side Current Sensing
HALF-WAVE RECTIFIER WITH RAIL-TO-GROUND
OUTPUT SWING
Since the LMV931/LMV932/LMV934 input common mode
range includes both positive and negative supply rails and the
output can also swing to either supply, achieving half-wave
rectifier functions in either direction is an easy task. All that is
needed are two external resistors; there is no need for diodes
or matched resistors. The half wave rectifier can have either
positive or negative going outputs, depending on the way the
circuit is arranged.
In Figure 3 the circuit is referenced to ground, while in Figure
4 the circuit is biased to the positive supply. These configu-
rations implement the half wave rectifier since the LMV931/
LMV932/LMV934 can not respond to one-half of the incoming
waveform. It can not respond to one-half of the incoming be-
cause the amplifier can not swing the output beyond either
rail therefore the output disengages during this half cycle.
During the other half cycle, however, the amplifier achieves a
half wave that can have a peak equal to the total supply volt-
age. RI should be large enough not to load the LMV931/
LMV932/LMV934.
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LMV931 Single/LMV932 Dual/LMV934 Quad
200326c3 200326c2
200326c4
FIGURE 3. Half-Wave Rectifier with Rail-To-Ground Output Swing Referenced to Ground
200326c0
200326b9
200326c1
FIGURE 4. Half-Wave Rectifier with Negative-Going Output Referenced to VCC
INSTRUMENTATION AMPLIFIER WITH RAIL-TO-RAIL
INPUT AND OUTPUT
Some manufactures make a non-“rail-to-rail”-op amp rail-to-
rail by using a resistive divider on the inputs. The resistors
divide the input voltage to get a rail-to-rail input range. The
problem with this method is that it also divides the signal, so
in order to get the obtained gain, the amplifier must have a
higher closed loop gain. This raises the noise and drift by the
internal gain factor and lowers the input impedance. Any mis-
match in these precision resistors reduces the CMRR as well.
The LMV931/LMV932/LMV934 is rail-to-rail and therefore
doesn’t have these disadvantages.
Using three of the LMV931/LMV932/LMV934 amplifiers, an
instrumentation amplifier with rail-to-rail inputs and outputs
can be made as shown in Figure 5.
In this example, amplifiers on the left side act as buffers to the
differential stage. These buffers assure that the input
impedance is very high and require no precision matched re-
sistors in the input stage. They also assure that the difference
amp is driven from a voltage source. This is necessary to
maintain the CMRR set by the matching R1-R2 with R3-R4.
The gain is set by the ratio of R2/R1 and R3 should equal R1
and R4 equal R2. With both rail-to-rail input and output ranges,
the input and output are only limited by the supply voltages.
Remember that even with rail-to-rail outputs, the output can
not swing past the supplies so the combined common mode
voltages plus the signal should not be greater that the sup-
plies or limiting will occur. For additional applications, see
National Semiconductor application notes AN–29, AN–31,
AN–71, and AN–127.
200326g4
FIGURE 5. Rail-to-rail Instrumentation Amplifier
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LMV931 Single/LMV932 Dual/LMV934 Quad
Simplified Schematic
200326a9
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LMV931 Single/LMV932 Dual/LMV934 Quad
Physical Dimensions inches (millimeters) unless otherwise noted
5-Pin SC70
NS Package Number MAA05A
5-Pin SOT23
NS Package Number MF05A
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LMV931 Single/LMV932 Dual/LMV934 Quad
8-Pin MSOP
NS Package Number MUA08A
8-Pin SOIC
NS Package Number M08A
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LMV931 Single/LMV932 Dual/LMV934 Quad