Datasheet LMV931MF, LMV931MG, LMV932MM, LMV932MA, LMV934MA Datasheet (National)

...

Download

Page 1

LMV931 Single/LMV932 Dual/LMV934 Quad 1.8V, RRIO Operational Amplifiers

LMV931 Single/LMV932 Dual/

LMV934 Quad

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 600Ω 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 ratio, 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 600Ω 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 solutions 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/600Ω load 80mV from rail

—

w/2kΩ load 30mV from rail

—

■

Supply current (per channel)

■

Gain bandwidth product 1.4MHz

■

Maximum V

■

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

■

October 13, 2010

200mV beyond rails

100μA

4.0mV

Typical Application

200326h0

Page 2

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) Machine Model 200V Human Body Model 2000V Supply Voltage (V+–V −)

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.national.com and

www.national.com/ms/MS/MS-SOLDERING.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)

LMV931 Single/LMV932 Dual/LMV934 Quad

Symbol Parameter Condition Min

(Note 6)

Input Offset Voltage LMV931 (Single) 1 4

LMV932 (Dual) LMV934 (Quad)

TCV

Input Offset Voltage Average

5.5

Drift

CMRR Common Mode Rejection Ratio

Input Bias Current 15 35

Input Offset Current 13 25

Supply Current (per channel) 103 185

LMV931, 0 ≤ VCM ≤ 0.6V

1.4V ≤ VCM ≤ 1.8V (Note 8)

LMV932 and LMV934 0 ≤ VCM ≤ 0.6V

1.4V ≤ VCM ≤ 1.8V (Note 8)

−0.2V ≤ VCM ≤ 0V

50 72

1.8V ≤ VCM ≤ 2.0V

PSRR Power Supply Rejection Ratio

1.8V ≤ V+ ≤ 5V

CMVR Input Common-Mode Voltage

Range

For CMRR Range ≥ 50dB

TA = 25°C V− −0.2 −0.2 to 2.1 V+ +0.2

TA −40°C to 85°

TA = 125°C V− +0.2 V+ −0.2

Large Signal Voltage Gain LMV931 (Single)

Large Signal Voltage Gain LMV932 (Dual) LMV934 (Quad)

RL = 600Ω to 0.9V, VO = 0.2V to 1.6V, VCM = 0.5V

RL = 2kΩ to 0.9V, VO = 0.2V to 1.6V, VCM = 0.5V

RL = 600Ω to 0.9V, VO = 0.2V to 1.6V, VCM = 0.5V

RL = 2kΩ to 0.9V, VO = 0.2V to 1.6V, VCM = 0.5V

−

Typ

(Note 5)

100

101

105

100

Max

(Note 6)

1 5.5

205

7.5

Units

μV/°C

μA

www.national.com 2

Page 3

LMV931 Single/LMV932 Dual/LMV934 Quad

Symbol Parameter Condition Min

(Note 6)

Output Swing

RL = 600Ω to 0.9V VIN = ±100mV

1.65

1.63

Typ

(Note 5)

1.72

Max

(Note 6)

Units

0.077 0.105

RL = 2kΩ to 0.9V VIN = ±100mV

1.75

1.74

0.120

1.77

0.024 0.035

0.04

Output Short Circuit Current (Note 3)

Sourcing, VO = 0V VIN = 100mV

Sinking, VO = 1.8V VIN = −100mV

3.3

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)

SR Slew Rate (Note 7) 0.35

GBW Gain-Bandwidth Product 1.4 MHz

Phase Margin 67

Gain Margin 7

Input-Referred Voltage Noise f = 10 kHz, VCM = 0.5V 60

Typ

(Note 5)

Max

(Note 6)

Units

V/μs

deg

THD Total Harmonic Distortion f = 1kHz, AV = +1

Input-Referred Current Noise f = 10 kHz 0.08

0.023

RL = 600Ω, VIN = 1 V

Amp-to-Amp Isolation (Note 9) 123 dB

3 www.national.com

Page 4

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

Input Offset Voltage LMV931 (Single) 1 4

LMV932 (Dual) LMV934 (Quad)

TCV

Input Offset Voltage Average

5.5

Drift

LMV931 Single/LMV932 Dual/LMV934 Quad

CMRR Common Mode Rejection Ratio

Input Bias Current 15 35

Input Offset Current 8 25

Supply Current (per channel) 105 190

LMV931, 0 ≤ VCM ≤ 1.5V

2.3V ≤ VCM ≤ 2.7V (Note 8)

LMV932 and LMV934 0 ≤ VCM ≤ 1.5V

2.3V ≤ VCM ≤ 2.7V (Note 8)

−0.2V ≤ VCM ≤ 0V

2.7V ≤ VCM ≤ 2.9V

PSRR Power Supply Rejection Ratio

1.8V ≤ V+ ≤ 5V VCM = 0.5V

Input Common-Mode Voltage Range

For CMRR Range ≥ 50dB

TA = 25°C V− −0.2 −0.2 to 3.0 V+ +0.2

TA = −40°C to 85°C

TA = 125°C V− +0.2 V+ −0.2

Large Signal Voltage Gain LMV931 (Single)

RL = 600Ω to 1.35V, VO = 0.2V to 2.5V

RL = 2kΩ to 1.35V, VO = 0.2V to 2.5V

Large Signal Voltage Gain LMV932 (Dual) LMV934 (Quad)

RL = 600Ω to 1.35V, VO = 0.2V to 2.5V

RL = 2kΩ to 1.35V, VO = 0.2V to 2.5V

Output Swing

RL = 600Ω to 1.35V VIN = ±100mV

RL = 2kΩ to 1.35V VIN = ±100mV

Output Short Circuit Current (Note 3)

Sourcing, VO = 0V VIN = 100mV

Sinking, VO = 0V VIN = −100mV

(Note 6)

1 5.5

50 74

−

2.55

2.53

0.083 0.110

2.65

2.64

0.025 0.04

Typ

(Note 5)

100

104

110

100

2.62

2.675

Max

(Note 6)

210

0.130

0.045

7.5

Units

μV/°C

μA

www.national.com 4

Page 5

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)

SR Slew Rate (Note 7) 0.4 V/µs

GBW Gain-Bandwidth Product 1.4 MHz

Phase Margin 70

Gain Margin 7.5

Input-Referred Voltage Noise f = 10 kHz, VCM = 0.5V 57

Typ

(Note 5)

Max

(Note 6)

Units

deg

LMV931 Single/LMV932 Dual/LMV934 Quad

THD Total Harmonic Distortion f = 1kHz, AV = +1

Input-Referred Current Noise f = 10 kHz 0.08

RL = 600Ω, VIN = 1V

0.022 %

Amp-to-Amp Isolation (Note 9) 123 dB

5 www.national.com

Page 6

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

Input Offset Voltage LMV931 (Single) 1 4

LMV932 (Dual) LMV934 (Quad)

TCV

Input Offset Voltage Average

Drift

LMV931 Single/LMV932 Dual/LMV934 Quad

CMRR Common Mode Rejection Ratio

Input Bias Current 14 35

Input Offset Current 9 25

Supply Current (per channel) 116 210

0 ≤ VCM ≤ 3.8V

4.6V ≤ VCM ≤ 5.0V (Note 8)

−0.2V ≤ VCM ≤ 0V

5.0V ≤ VCM ≤ 5.2V

PSRR Power Supply Rejection Ratio

1.8V ≤ V+ ≤ 5V VCM = 0.5V

CMVR Input Common-Mode Voltage

Range

Large Signal Voltage Gain LMV931 (Single)

For CMRR Range ≥ 50dB

RL = 600Ω to 2.5V, VO = 0.2V to 4.8V

RL = 2kΩ to 2.5V, VO = 0.2V to 4.8V

Large Signal Voltage Gain LMV932 (Dual) LMV934 (Quad)

RL = 600Ω to 2.5V, VO = 0.2V to 4.8V

RL = 2kΩ to 2.5V, VO = 0.2V to 4.8V

Output Swing

RL = 600Ω to 2.5V VIN = ±100mV

RL = 2kΩ to 2.5V VIN = ±100mV

Output Short Circuit Current (Note 3)

LMV931, Sourcing, VO = 0V VIN = 100mV

Sinking, VO = 5V VIN = −100mV

(Note 6)

1 5.5

5.5

50 78

75 70

TA = 25°C V− −0.2 −0.2 to 5.3 V+ +0.2

TA = −40°C to

−

85°C

TA = 125°C V− +0.3 V+ −0.3

4.855

4.835

0.120 0.160

4.945

4.935

0.037 0.065

(Note 5)

Typ

Max

(Note 6)

100

102

113

100

4.890

0.180

4.967

0.075

100

7.5

230

Units

μV/°C

μA

www.national.com 6

Page 7

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)

SR Slew Rate (Note 7) 0.42 V/µs

GBW Gain-Bandwidth Product 1.5 MHz

Phase Margin 71

Gain Margin 8

Input-Referred Voltage Noise f = 10 kHz, VCM = 1V 50

Typ

(Note 5)

Max

(Note 6)

Units

deg

LMV931 Single/LMV932 Dual/LMV934 Quad

THD Total Harmonic Distortion f = 1kHz, AV = +1

Input-Referred Current Noise f = 10 kHz 0.08

0.022

RL = 600Ω, VO = 1V

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 T PD = (T

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 = 100kΩ 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.

– TA)/ θJA. All numbers apply for packages soldered directly onto a PC Board.

J(MAX)

, θJA and TA. The maximum allowable power dissipation at any ambient temperature is

J(MAX)

7 www.national.com

Page 8

Connection Diagrams

5-Pin SC70-5/SOT23-5

(LMV931)

Top View

200326ao

LMV931 Single/LMV932 Dual/LMV934 Quad

Ordering Information

Package Part Number Packaging Marking Transport Media NSC Drawing

5-Pin SC70

5-Pin SOT23

8-Pin MSOP

8-Pin SOIC

14-Pin TSSOP

14-Pin SOIC

LMV931MG

LMV931MGX 3k Units Tape and Reel

LMV931MF

LMV931MFX 3k Units Tape and Reel

LMV932MM

LMV932MMX 3.5k Units Tape and Reel

LMV932MA

LMV932MAX 2.5k Units Tape and Reel

LMV934MT

LMV934MTX 2.5k Units Tape and Reel

LMV934MA

LMV934MAX 2.5k Units Tape and Reel

8-Pin MSOP/SOIC

(LMV932)

Top View

A74

A79A

A86A

LMV932MA

LMV934MT

LMV934MA

200326g12

1k Units Tape and Reel

14-Pin TSSOP/SOIC

(LMV934)

Top View

Rails

200326g13

MAA05A

MF05A

MUA08A

M08A

MTC14

M14A

www.national.com 8

Page 9

LMV931 Single/LMV932 Dual/LMV934 Quad

Typical Performance Characteristics Unless otherwise specified, V

Supply Current vs. Supply Voltage (LMV931)

20032622

Sinking Current vs. Output Voltage

Sourcing Current vs. Output Voltage

Output Voltage Swing vs. Supply Voltage

= +5V, single supply, TA = 25°C.

20032625

20032628

Output Voltage Swing vs. Supply Voltage

20032650

20032649

Gain and Phase vs. Frequency

200326g8

9 www.national.com

Page 10

Gain and Phase vs. Frequency

LMV931 Single/LMV932 Dual/LMV934 Quad

Gain and Phase vs. Frequency

PSRR vs. Frequency

200326g9

200326g11

200326g10

CMRR vs. Frequency

20032639

Input Voltage Noise vs. Frequency

20032656

www.national.com 10

20032658

Page 11

LMV931 Single/LMV932 Dual/LMV934 Quad

Input Current Noise vs. Frequency

THD vs. Frequency

20032666

THD vs. Frequency

20032667

Slew Rate vs. Supply Voltage

Small Signal Non-Inverting Response

20032670

20032668

20032669

Small Signal Non-Inverting Response

20032671

11 www.national.com

Page 12

Small Signal Non-Inverting Response

Large Signal Non-Inverting Response

20032672

LMV931 Single/LMV932 Dual/LMV934 Quad

Large Signal Non-Inverting Response

20032674

Short Circuit Current vs. Temperature (Sinking)

20032673

Large Signal Non-Inverting Response

20032675

Short Circuit Current vs. Temperature (Sourcing)

20032676

www.national.com 12

20032677

Page 13

LMV931 Single/LMV932 Dual/LMV934 Quad

Offset Voltage vs. Common Mode Range

20032636

Offset Voltage vs. Common Mode Range

20032637

20032638

Application Note

INPUT AND OUTPUT STAGE

The rail-to-rail input stage of this family provides more flexibility 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 distortion 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 peakto-peak signal will contain input-crossover distortion while a 3V peak-to-peak signal centered at 1.5V will not contain inputcrossover 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 V crossover point. In addition to the rail-to-rail performance, the

output stage can provide enough output current to drive 600Ω 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 100kΩ, 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.

13 www.national.com

Page 14

LMV931 Single/LMV932 Dual/LMV934 Quad

20032659

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 because 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 voltage. RI should be large enough not to load the LMV931/ LMV932/LMV934.

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 prevent over charging. A sense resistor R the battery directly. This system requires an op amp with railto-rail input. The LMV931/LMV932/LMV934 are ideal for this application because its common mode input range goes up to the rail.

is connected to

SENSE

200326h0

FIGURE 2. High Side Current Sensing

www.national.com 14

Page 15

200326c3

200326c2

FIGURE 3. Half-Wave Rectifier with Rail-To-Ground Output Swing Referenced to Ground

LMV931 Single/LMV932 Dual/LMV934 Quad

200326c4

200326c1

200326c0

FIGURE 4. Half-Wave Rectifier with Negative-Going Output Referenced to V

INSTRUMENTATION AMPLIFIER WITH RAIL-TO-RAIL INPUT AND OUTPUT

Some manufactures make a non-“rail-to-rail”-op amp rail-torail 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 mismatch 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 resistors 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 R and R4 equal R2. With both rail-to-rail input and output ranges,

200326b9

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 supplies 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

15 www.national.com

Page 16

Simplified Schematic

LMV931 Single/LMV932 Dual/LMV934 Quad

200326a9

www.national.com 16

Page 17

Physical Dimensions inches (millimeters) unless otherwise noted

LMV931 Single/LMV932 Dual/LMV934 Quad

NS Package Number MAA05A

5-Pin SC70

NS Package Number MF05A

5-Pin SOT23

17 www.national.com

Page 18

LMV931 Single/LMV932 Dual/LMV934 Quad

NS Package Number MUA08A

8-Pin MSOP

NS Package Number M08A

www.national.com 18

8-Pin SOIC

Page 19

14-Pin TSSOP

NS Package Number MTC14

LMV931 Single/LMV932 Dual/LMV934 Quad

14-Pin SOIC

NS Package Number M14A

19 www.national.com

Page 20

Notes

For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com

Products Design Support

Amplifiers www.national.com/amplifiers WEBENCH® Tools www.national.com/webench

Audio www.national.com/audio App Notes www.national.com/appnotes

Clock and Timing www.national.com/timing Reference Designs www.national.com/refdesigns

Data Converters www.national.com/adc Samples www.national.com/samples

Interface www.national.com/interface Eval Boards www.national.com/evalboards

LVDS www.national.com/lvds Packaging www.national.com/packaging

Power Management www.national.com/power Green Compliance www.national.com/quality/green

Switching Regulators www.national.com/switchers Distributors www.national.com/contacts

LDOs www.national.com/ldo Quality and Reliability www.national.com/quality

LED Lighting www.national.com/led Feedback/Support www.national.com/feedback

Voltage References www.national.com/vref Design Made Easy www.national.com/easy

PowerWise® Solutions www.national.com/powerwise Applications & Markets www.national.com/solutions

Serial Digital Interface (SDI) www.national.com/sdi Mil/Aero www.national.com/milaero

Temperature Sensors www.national.com/tempsensors SolarMagic™ www.national.com/solarmagic

PLL/VCO www.national.com/wireless PowerWise® Design

University

www.national.com/training

THE CONTENTS OF THIS DOCUMENT ARE PROVIDED IN CONNECTION WITH NATIONAL SEMICONDUCTOR CORPORATION (“NATIONAL”) PRODUCTS. NATIONAL MAKES NO REPRESENTATIONS OR WARRANTIES WITH RESPECT TO THE ACCURACY OR COMPLETENESS OF THE CONTENTS OF THIS PUBLICATION AND RESERVES THE RIGHT TO MAKE CHANGES TO SPECIFICATIONS AND PRODUCT DESCRIPTIONS AT ANY TIME WITHOUT NOTICE. NO LICENSE, WHETHER EXPRESS, IMPLIED, ARISING BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT.

TESTING AND OTHER QUALITY CONTROLS ARE USED TO THE EXTENT NATIONAL DEEMS NECESSARY TO SUPPORT NATIONAL’S PRODUCT WARRANTY. EXCEPT WHERE MANDATED BY GOVERNMENT REQUIREMENTS, TESTING OF ALL PARAMETERS OF EACH PRODUCT IS NOT NECESSARILY PERFORMED. NATIONAL ASSUMES NO LIABILITY FOR APPLICATIONS ASSISTANCE OR BUYER PRODUCT DESIGN. BUYERS ARE RESPONSIBLE FOR THEIR PRODUCTS AND APPLICATIONS USING NATIONAL COMPONENTS. PRIOR TO USING OR DISTRIBUTING ANY PRODUCTS THAT INCLUDE NATIONAL COMPONENTS, BUYERS SHOULD PROVIDE ADEQUATE DESIGN, TESTING AND OPERATING SAFEGUARDS.

EXCEPT AS PROVIDED IN NATIONAL’S TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS, NATIONAL ASSUMES NO LIABILITY WHATSOEVER, AND NATIONAL DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY RELATING TO THE SALE AND/OR USE OF NATIONAL PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.

LIFE SUPPORT POLICY

NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS PRIOR WRITTEN APPROVAL OF THE CHIEF EXECUTIVE OFFICER AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:

Life support devices or systems are devices which (a) are intended for surgical implant into the body, or (b) support or sustain life and

LMV931 Single/LMV932 Dual/LMV934 Quad 1.8V, RRIO Operational Amplifiers

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. A critical component is any component in 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.

National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other brand or product names may be trademarks or registered trademarks of their respective holders.

For the most current product information visit us at www.national.com

www.national.com

National Semiconductor Americas Technical Support Center

Email: support@nsc.com Tel: 1-800-272-9959

National Semiconductor Europe Technical Support Center

Email: europe.support@nsc.com

National Semiconductor Asia Pacific Technical Support Center

Email: ap.support@nsc.com

National Semiconductor Japan Technical Support Center

Email: jpn.feedback@nsc.com