Datasheet LMH6723, LMH6724, LMH6725 Datasheet (National Semiconductor)

查询LMH6723 LMH6724 LMH6725供应商

LMH6723/LMH6724/LMH6725 Single/Dual/Quad 370 MHz 1 mA Current Feedback Op Amp

May 2004

General Description

The LMH6723/LMH6724/LMH6725 provides a 260 MHz small signal bandwidth at a gain of +2 V/V and a 600 V/µs slew rate while consuming only 1 mA from

The LMH6723/LMH6724/LMH6725 supports video applications with its 0.03% and 0.11˚ differential gain and phase errors for NTSC and PAL video signals while driving a back terminated 75Ω load. The LMH6723/LMH6724/LMH6725 also offers a flat gain response of 0.1 dB to 100 MHz. Additionally, the LMH6723/LMH6724/LMH6725 can deliver 110 mA of linear output current. This level of performance, as well as a wide supply range of 4.5 to 12V, makes the LMH6723/LMH6724/LMH6725 an ideal op amp for a variety of portable applications. The LMH6723/LMH6724/ LMH6725’s small packages (SOIC & SOT23), low power requirement and high performance, allow the LMH6723/ LMH6724/LMH6725 to serve a wide variety of portable applications.

The LMH6723/LMH6724/LMH6725 is manufactured in National’s VIP

™

10 complimentary bipolar process.

5V supplies.

Typical Application

Features

n Large signal bandwidth and slew rate 100% tested n 370 MHz bandwidth (A

n 260 MHz (A n 1 mA supply current n 110 mA linear output current n 0.03%, 0.11˚ differential gain, phase n 0.1 dB gain flatness to 100 MHz n Fast slew rate: 600 V/µs n Unity gain stable n Single supply range of 4.5 to 12V n Improved replacement for CLC450, CLC452, (LMH6723)

=+2V/V,V

=1,V

OUT

= 0.5 VPP)−3dB

OUT

= 0.5 VPP)−3dBBW

Applications

n Line driver n Portable video n A/D driver n Portable DVD

Single Supply Cable Driver

20078936

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,

Human Body Model 2000V

Machine Model (Note 4) 200V

please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.

(V+-V-)

OUT

120 mA (Note 3)

Common Mode Input Voltage

Maximum Junction Temperature +150˚C

Storage Temperature Range −65˚C to +150˚C

Soldering Information

LMH6723/LMH6724/LMH6725

Infrared or Convection (20 sec) 235˚C

Wave Soldering (10 sec) 260˚C

6.75V

Operating Ratings (Note 3)

Thermal Resistance

Package (θ

8-Pin SOIC 166˚C/W

5-Pin SOT23 230˚C/W

14-Pin SOIC 130˚C/W

Operating Temperature Range −40˚C to +85˚C

Nominal Supply Voltage 4.5V to 12V

ESD Tolerance (Note 4)

5V Electrical Characteristics

Unless specified, AV= +2, RF= 1200Ω,RL= 100Ω. Boldface limits apply at temperature extremes. (Note 2)

Symbol Parameter Conditions Min Typ Max Units

Frequency Domain Response

SSBW −3 dB Bandwidth Small Signal V

LSBW −3dB Bandwidth Large Signal V

OUT

= 0.5 V

= 4.0 V

LMH6723 90 110

LMH6724

85 95

260 MHz

LMH6725

UGBW −3 dB Bandwidth Unity Gain V

.1dB BW .1 dB Bandwidth V

DG Differential Gain R

DP Differential Phase R

=.2VPPAV= 1 V/V 370 MHz

OUT

= 0.5 V

OUT

= 150Ω, 4.43 MHz 0.03 %

= 150Ω, 4.43 MHz 0.11 deg

100 MHz

Time Domain Response

TRS Rise and Fall Time 4V Step 2.5 ns

TSS Settling Time to 0.05% 2V Step 30 ns

SR Slew Rate 4V Step 500 600 V/µs

Distortion and Noise Response

HD2 2

HD3 3

Harmonic Distortion 2 VPP, 5 MHz −65 dBc

Harmonic Distortion 2 VPP, 5 MHz −63 dBc

Equivalent Input Noise

VN Non-Inverting Voltage Noise

NICN Inverting Current Noise

ICN Non-Inverting Current Noise

1 MHz 4.3 nV/

1 MHz 6 pA/

Static, DC Performance

Input Offset Voltage 1

Input Bias Current Non-Inverting −2

Input Bias Current Inverting 0.4

PSRR Power Supply Rejection Ratio DC, 1V Step LMH6723 59

3.7

LMH6724 59

LMH6725 59

MHz

µA

)

www.national.com 2

5V Electrical Characteristics (Continued)

Unless specified, AV= +2, RF= 1200Ω,RL= 100Ω. Boldface limits apply at temperature extremes. (Note 2)

Symbol Parameter Conditions Min Typ Max Units

CMRR Common Mode Rejection Ratio DC, 1V Step LMH6723 57

LMH6724 57

LMH6725 57

Supply Current (per amplifier) RL=

∞

1 1.2

1.4

Miscellaneous Performance

IN+

IN−

Input Resistance Non-Inverting 100 kΩ

Input Resistance

Inverting 500 Ω (Output Resistance of Input Buffer)

OUT

Input Capacitance Non-Inverting 1.5 pF

Output Resistance Closed Loop 0.01 Ω

Output Voltage Range RL=

∞

LMH6723

LMH6724 LMH6725

Output Voltage Range, High RL= 100Ω 3.6

3.85

3.9

4.1

3.7

3.5

Output Voltage Range, Low R

= 100Ω −3.25

−3.45

−3.1

CMVR Input Voltage Range Common Mode, CMRR>50 dB

Output Current Sourcing, V

Sinking, V

=0 95

OUT

= 0 −80

OUT

4.0 V

110

−70

LMH6723/LMH6724/LMH6725

2.5V Electrical Characteristics

Unless otherwise specified, AV= +2, RF= 1200Ω,RL= 100Ω. Boldface limits apply at temperature extremes. (Note 2)

Symbol Parameter Conditions Min Typ Max Units

Frequency Domain Response

SSBW −3 dB Bandwidth Small Signal V

LSBW −3 dB Bandwidth Large Signal V

OUT

= 0.5 V

= 2.0 V

LMH6723

95 125

LMH6724

210 MHz

MHz

LMH6725 90 100

UGBW −3 dB Bandwidth Unity Gain V

.1dB BW .1 dB Bandwidth V

DG Differential Gain R

DP Differential Phase R

= 0.5 VPP,AV= 1 V/V 290 MHz

OUT

= 0.5 V

OUT

= 150Ω, 4.43 MHz .03 %

= 150Ω, 4.43 MHz 0.1 deg

100 MHz

Time Domain Response

TRS Rise and Fall Time 2V Step 4 ns

SR Slew Rate 2V Step 275 400 V/µs

Distortion and Noise Response

HD2 2

HD3 3

Harmonic Distortion 2 VPP, 5 MHz −67 dBc

Equivalent Input Noise

VN Non-Inverting Voltage

1 MHz 4.3 nV/

www.national.com3

2.5V Electrical Characteristics (Continued)

Unless otherwise specified, AV= +2, RF= 1200Ω,RL= 100Ω. Boldface limits apply at temperature extremes. (Note 2)

Symbol Parameter Conditions Min Typ Max Units

NICN Inverting Current

ICN Non-Inverting Current

1MHz 6 pA/

Static, DC Performance

Input Offset Voltage −0.5

Input Bias Current Non-Inverting −2.7

LMH6723/LMH6724/LMH6725

PSRR Power Supply Rejection Ratio DC, 0.5V Step LMH6723 59

Input Bias Current Inverting −0.7

3.4

LMH6724 58

LMH6725 59

CMRR Common Mode Rejection Ratio DC, 0.5V Step LMH6723 57

LMH6724 55

LMH6725 57

Supply Current (per amplifier) RL=

∞

.9 1.1

1.3

Miscellaneous Performance

IN+

IN−

Input Resistance Non-Inverting 100 kΩ

Input Resistance

Inverting 500 Ω (Output Resistance of Input Buffer)

OUT

Input Capacitance Non-Inverting 1.5 pF

Output Resistance Closed Loop .02 Ω

Output Voltage Range RL=

∞

Output Voltage Range, High RL= 100Ω LMH6723 1.35

1.55

1.4

1.65 V

1.45

1.27

Output Voltage Range, Low R

LMH6724 LMH6725

= 100Ω LMH6723 −1.25

1.35

1.26

1.45

−1.38

−1.15

CMVR Input Voltage Range Common Mode, CMRR

Output Current Sourcing 70

LMH6724 LMH6725

50 dB

−1.25

−1.38

−1.15

1.45 V

Sinking −30

−60

−30

µA

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, see the Electrical Characteristics tables.

Note 2: 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 T See Applications Section for information on temperature derating of this device. Min/Max ratings are based on product characterization and simulation. Individual parameters are tested as noted.

www.national.com 4

. No guarantee of parametric performance is indicated in the electrical tables under conditions of internal self heating where T

J=TA

TA.

Note 3: The maximum continuous output current (I Section for more details.

Note 4: Human body model, 1.5 kΩ in series with 100 pF. Machine model, 0Ω In series with 200 pF.

) is determined by device power dissipation limitations. See the Power Dissipation section of the Application

OUT

Connection Diagrams

5-Pin SOT23 8-Pin SOIC

LMH6723/LMH6724/LMH6725

Top View

20078937

Top View

20078938

14-Pin SOIC 8-Pin SOIC

Top View

20078944

20078947

Top View

Ordering Information

Package Part Number Package Marking Transport Media NSC Drawing

5-Pin SOT23

8-Pin SOIC

14-Pin SOIC

LMH6723MF

LMH6723MFX 3k Units Tape and Reel

LMH6723MA

LMH6723MAX 2.5k Units Tape and Reel

LMH6724MA

LMH6724MAX 2.5k Units Tape and Reel

LMH6725MA

LMH6725MAX 2.5k Units Tape and Reel

AB1A

LMH6723MA

LMH6724MA

LMH6725MA

1k Units Tape and Reel

95 Units/Rail

55 Units/Rail

MF05A

M08A

M14A

www.national.com5

Typical Performance Characteristics A

Frequency Response vs. V

LMH6723/LMH6724/LMH6725

Frequency Response vs. V

OUT,AV

= 2 Frequency Response vs. V

20078928 20078926

= 1 Frequency Response vs. V

=2,RF= 1200Ω,RL= 100Ω, unless otherwise specified.

OUT,AV

20078929 20078927

Large Signal Frequency Response Frequency Response vs. Supply Voltage

20078921

www.national.com 6

20078930

LMH6723/LMH6724/LMH6725

Typical Performance Characteristics A

specified. (Continued)

Suggested R

Frequency Response vs. R

vs. Gain Non-Inverting Suggested RFvs. Gain Inverting

20078905

=2,RF= 1200Ω,RL= 100Ω, unless otherwise

Frequency Response vs. R

20078906

20078922 20078923

Open Loop Gain & Phase Open Loop Gain & Phase

20078917

20078918

www.national.com7

Typical Performance Characteristics A

specified. (Continued)

=2,RF= 1200Ω,RL= 100Ω, unless otherwise

HD2 & HD3 vs. V

LMH6723/LMH6724/LMH6725

HD2 & HD3 vs. Frequency HD2 & HD3 vs. Frequency

OUT

20078911

HD2 & HD3 vs. V

OUT

20078913

20078912 20078914

Frequency Response vs. C

20078925 20078924

www.national.com 8

Frequency Response vs. C

LMH6723/LMH6724/LMH6725

Typical Performance Characteristics A

specified. (Continued)

Suggested R

PSRR vs. Frequency PSRR vs. Frequency

OUT

vs. C

20078920 20078919

=2,RF= 1200Ω,RL= 100Ω, unless otherwise

Suggested R

OUT

vs. C

20078915

Closed Loop Output Resistance CMRR vs. Frequency

20078907

20078916

20078908

www.national.com9

Typical Performance Characteristics A

specified. (Continued)

Differential Gain & Phase Channel Matching (LMH6724)

LMH6723/LMH6724/LMH6725

=2,RF= 1200Ω,RL= 100Ω, unless otherwise

20078910

Channel Matching (LMH6724) Crosstalk (LMH6724)

20078949

Channel Matching (LMH6725) Channel Matching (LMH6725)

20078948

20078946

20078940 20078941

www.national.com 10

LMH6723/LMH6724/LMH6725

Typical Performance Characteristics A

specified. (Continued)

Crosstalk (LMH6725)

20078945

=2,RF= 1200Ω,RL= 100Ω, unless otherwise

www.national.com11

Application Section

GENERAL INFORMATION

The LMH6723/LMH6724/LMH6725 is a high speed current feedback amplifier manufactured on National Semiconductor’s VIP10 polar process. LMH6723/LMH6724/LMH6725 offers a unique combination of high speed and low quiescent supply current making it suitable for a wide range of battery powered and portable applications that require high performance. This amplifier can operate from 4.5V to 12V nominal supply voltages and draws only 1mA of quiescent supply

LMH6723/LMH6724/LMH6725

current at 10V supplies ( LMH6724/LMH6725 has no internal ground reference so single or split supply configurations are both equally useful.

EVALUATION BOARDS

National Semiconductor provides the following evaluation boards as a guide for high frequency layout and as an aid in device testing and characterization. Many of the datasheet plots were measured with these boards. For availability and ordering details refer to the national web site at WWW.National.com. Use the search box to locate the product folder.

Device Package Board Part #

LMH6723MA SOIC-8 CLC730227

LMH6723MF SOT-23 CLC730216

LMH6724MA SOIC-8 CLC730036

LMH6725MA SOIC-14 CLC730231

An evaluation board is shipped when a sample request is placed with National Semiconductor.

FEEDBACK RESISTOR SELECTION

One of the key benefits of a current feedback operational amplifier is the ability to maintain optimum frequency response independent of gain by using appropriate values for the feedback resistor (R Typical Performance plots specify an R +2V/V and specified). Generally, lowering R value will peak the frequency response and extend the bandwidth while increasing the value of R quency response to roll off faster. Reducing the value of R too far below it’s recommended value will cause overshoot, ringing and, eventually, oscillation.

™

(Vertically Integrated PNP) complimentary bi-

5V typically). The LMH6723/

). The Electrical Characteristics and

5V or±2.5V power supplies (unless otherwise

of 1200Ω, a gain of

from it’s recommended

will cause the fre-

20078922

FIGURE 1. Frequency Response vs. R

The plot labeled "Frequency Response vs. R LMH6723/LMH6724/LMH6725’s frequency response as R

" shows the

is varied (RL= 100Ω,AV= +2). This plot shows that an RFof 800Ω results in peaking. An R

of 1200Ω gives near maximal

bandwidth and gain flatness with good stability. Since each application is slightly different it is worth some experimentation to find the optimal R value of R

that produces~0.1 dB of peaking is the best

for a given circuit. In general a

compromise between stability and maximal bandwidth. Note that it is not possible to use a current feedback amplifier with the output shorted directly to the inverting input. The buffer configuration of the LMH6723/LMH6724/LMH6725 requires a 2000Ω feedback resistor for stable operation. For other gains see the charts "R

vs. Non Inverting Gain" and "RFvs.

Inverting Gain". These charts provide a good place to start when selecting the best feedback resistor value for a variety of gain settings.

For more information see Application Note OA-13 which describes the relationship between R

quency response for current feedback operational amplifiers. The value for the inverting input impedance for the

and closed-loop fre-

LMH6723/LMH6724/LMH6725 is approximately 500Ω. The LMH6723/LMH6724/LMH6725 is designed for optimum performance at gains of +1 to +5V/V and −1 to −4V/V. Higher gain configurations are still useful, however, the bandwidth will fall as gain is increased, much like a typical voltage feedback amplifier.

www.national.com 12

LMH6723/LMH6724/LMH6725

Application Section (Continued)

20078905

FIGURE 2. RF vs. Non-Inverting Gain

Both plots show the value of R required at higher gains to keep R below the input impedance of the inverting input. This limitation applies to both inverting and non-inverting configurations. For the LMH6723/LMH6724/LMH6725 the input resistance of the inverting input is approximately 500Ω and 100Ω is a practical lower limit for R LMH6725 begins to operate in a gain bandwidth limited fashion in the region where R gains. Note that the amplifier will operate with R below 100Ω, however results will be substantially different than predicted from ideal models. In particular the voltage potential between the Inverting and Non- Inverting inputs cannot be expected to remain small.

For inverting configurations the impedance seen by the source is R inverting gain since R of R

|| RT. For most sources this limits the maximum

is determined by Figure 3. The value

is then RF/Gain. Thus for an inverting gain of −4 V/V the input impedance is equal to 100Ω. Using a termination resistor this can be brought down to match a 50Ω or 75Ω source, however, a 150Ω source cannot be matched.

versus gain. A higher RFis

from decreasing too far

. The LMH6723/LMH6724/

must be increased for higher

values well

ACTIVE FILTERS

When using any current feedback Operational Amplifier as an active filter it is necessary to be careful using reactive components in the feedback loop. Reducing the feedback impedance, especially at higher frequencies, will almost certainly cause stability problems. Likewise capacitance on the inverting input should be avoided. See Application Notes OA-7 and OA-26 for more information on Active Filter applications for Current Feedback Op Amps.

When using the LMH6723/LMH6724/LMH6725 as a low pass filter the value of R the value recommended in the R benefit of reducing R

can be substantially reduced from

is increased gain at higher frequen-

vs. Gain charts. The

cies, which improves attenuation in the stop band. Stability problems are avoided because in the stop band additional device bandwidth is used to cancel the input signal rather than amplify it. The benefit of this change depends on the particulars of the circuit design. With a high pass filter configuration reducing R

will likely result in device instability

and is not recommended.

20078933

FIGURE 3. RFvs. Inverting Gain

FIGURE 4. Typical Application with Suggested Supply

Bypassing

20078934

FIGURE 5. Decoupling Capacitive Loads

20078906

www.national.com13

Application Section (Continued)

DRIVING CAPACITIVE LOADS

Capacitive output loading applications will benefit from the use of a series output resistor R of a series output resistor, R output under capacitive loading. The charts "Suggested

vs. Cap Load" give a recommended value for selecting

OUT

a series output resistor for mitigating capacitive loads. The values suggested in the charts are selected for .5 dB or less of peaking in the frequency response. This gives a good compromise between settling time and bandwidth. For appli-

LMH6723/LMH6724/LMH6725

cations where maximum frequency response is needed and some peaking is tolerable, the value of R slightly from the recommended values.

There will be amplitude lost in the series resistor unless the gain is adjusted to compensate; this effect is most noticeable

with heavy loads (R

150Ω).

An alternative approach is to place Rout inside the feedback loop as shown in Figure 6. This will preserve gain accuracy, but will still limit maximum output voltage swing.

FIGURE 6. Series Output Resistor inside feedback loop

INVERTING INPUT PARASITIC CAPACITANCE

Parasitic capacitance is any capacitance in a circuit that was not intentionally added. It comes about from electrical interaction between conductors. Parasitic capacitance can be reduced but never entirely eliminated. Most parasitic capacitances that cause problems are related to board layout or lack of termination on transmission lines. Please see the section on Layout Considerations for hints on reducing problems due to parasitic capacitances on board traces. Transmission lines should be terminated in their characteristic impedance at both ends.

High speed amplifiers are sensitive to capacitance between the inverting input and ground or power supplies. This shows up as gain peaking at high frequency. The capacitor raises device gain at high frequencies by making R smaller. Capacitive output loading will exaggerate this effect.

One possible remedy for this effect is to slightly increase the value of the feedback (and gain set) resistor. This will tend to offset the high frequency gain peaking while leaving other parameters relatively unchanged. If the device has a capacitive load as well as inverting input capacitance using a series output resistor as described in the section on "Driving Capacitive Loads" will help.

. Figure 5 shows the use

OUT

, to stabilize the amplifier

OUT

can be reduced

OUT

20078935

appear

20078942

FIGURE 7. High Output Current Composite Amplifier

When higher currents are required than a single amplifier can provide, the circuit of Figure 7 can be used. Although the example circuit was intended for the LMH6725 quad op amp, higher thermal efficiency can be obtained by using four separate SOIC op amps. Careful attention to a few key components will help get good performance from this circuit. The first thing to note is that the buffers need slightly higher value feedback resistors than if the amplifiers were individually configured. As well, R

and C1provide mid circuit

frequency compensation to further improve stability. The composite amplifier has approximately twice the phase delay of a single circuit. The larger values of R as the high frequency attenuation provided by C

and R10as well

8,R9

and R

ensure that the circuit does not oscillate. Resistors R

4,R5,R6

and R7are necessary to ensure even current distribution between the amplifiers. Since they are inside the feedback loop they have no effect on the gain of the circuit. The circuit shown has a gain of 5. The frequency response is shown in Figure 8.

www.national.com 14

20078943

FIGURE 8. Composite Amplifier Frequency Response

Application Section (Continued)

LAYOUT CONSIDERATIONS

Whenever questions about layout arise, use the evaluation board as a guide. Evaluation boards are shipped with sample requests.

To reduce parasitic capacitances ground and power planes should be removed near the input and output pins. Components in the feedback loop should be placed as close to the device as possible. For long signal paths controlled impedance lines should be used, along with impedance matching at both ends.

Bypass capacitors should be placed as close to the device as possible. Bypass capacitors from each rail to ground are applied in pairs. The larger electrolytic bypass capacitors can be located anywhere on the board, the smaller ceramic capacitors should be placed as close to the device as possible.

POWER DISSIPATION

Follow these steps to determine the Maximum power dissipation for the LMH6723/LMH6724/LMH6725:

1. Calculate the quiescent (no-load) power: P

S)VS

=V+-V

AMP=ICC

2. Calculate the RMS power dissipated in the output stage: (rms) = rms ((VS-V

OUT

)*I

) where V

OUT

and I

OUT

are the voltage and current across the external load and

is the total supply current.

3. Calculate the total RMS power: P

T=PAMP+PD

The maximum power that the LMH6723/LMH6724/ LMH6725, package can dissipate at a given temperature can be derived with the following equation:

= (150o-T

MAX

ture (˚C) and θ

)/ θJA, where T

AMB

= Thermal resistance, from junction to

= Ambient tempera-

AMB

ambient, for a given package (˚C/W). For the SOIC-8 package θ has a θ

is 166˚C/W, for the SOT it is 230˚C/W. The SOIC-14

of 130˚C/W,

LMH6723/LMH6724/LMH6725

VIDEO PERFORMANCE

The LMH6723/LMH6724/LMH6725 has been designed to provide good performance with both PAL and NTSC composite video signals. The LMH6723/LMH6724/LMH6725 is specified for PAL signals. NTSC performance is typically marginally better due to the lower frequency content of the signal. Performance degrades as the loading is increased, therefore best performance will be obtained with back terminated loads. The back termination reduces reflections from the transmission line and effectively masks transmission line and other parasitic capacitances from the amplifier output stage. Figure 4 shows a typical configuration for driving a 75Ω Cable. The amplifier is configured for a gain of two to make up for the 6dB of loss in R

OUT

SINGLE 5V SUPPLY VIDEO

With a 5V supply the LMH6723/LMH6724/LMH6725 is able to handle a composite NTSC video signal, provided that the signal is AC coupled and level shifted so that the signal is centered around V

/2.

ESD PROTECTION

The LMH6723/LMH6724/LMH6725 is protected against electrostatic discharge (ESD) on all pins. The LMH6723/ LMH6725 will survive 2000V Human Body model or 200V Machine model events.

Under closed loop operation the ESD diodes have no effect on circuit performance. There are occasions, however, when the ESD diodes will be evident. If the LMH6723/LMH6724/ LMH6725 is driven into a slewing condition the ESD diodes will clamp large differential voltages until the feedback loop restores closed loop operation. Also if the device is powered down and a large input signal is applied the ESD diodes will conduct.

www.national.com15

Physical Dimensions inches (millimeters)

unless otherwise noted

LMH6723/LMH6724/LMH6725

5-Pin SOT23

NS Product Number MF05A

8-Pin SOIC

NS Product Number M08A

www.national.com 16

Physical Dimensions inches (millimeters) unless otherwise noted (Continued)

LMH6723/LMH6724/LMH6725 Single/Dual/Quad 370 MHz 1 mA Current Feedback Op Amp

14-Pin SOIC

NS Product Number M14A

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

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.

labeling, can be reasonably expected to result in a significant injury to the user.

BANNED SUBSTANCE COMPLIANCE

National Semiconductor certifies that the products and packing materials meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2.

National Semiconductor Americas Customer Support Center

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

www.national.com

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.

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

Datasheet LMH6723, LMH6724, LMH6725 Datasheet (National Semiconductor)

Specifications and Main Features

Frequently Asked Questions

User Manual