LM7121IM

LM7121 235 MHz Tiny Low Power Voltage Feedback Amplifier August 1999 LM7121 235 MHz Tiny Low Power Voltage Feedback Amplifier General Description The LM7121 is a high performance operational amplifier which addresses the increasing AC performance needs of video and imaging applications, and the size and power constraints of portable applications. The LM7121 can operate over a wide dynamic range of supply voltages, from 5V (single supply) up to ± 15V (see the Application Information section for more details). It offers an excellent speed-power product delivering 1300V/µs and 235 MHz Bandwidth (−3 dB, AV = +1). Another key feature of this operational amplifier is stability while driving unlimited capacitive loads. Due to its Tiny SOT23-5 package, the LM7121 is ideal for designs where space and weight are the critical parameters. The benefits of the Tiny package are evident in small portable electronic devices, such as cameras, and PC video cards. Tiny amplifiers are so small that they can be placed anywhere on a board close to the signal source or near the input to an A/D converter. Features (Typical unless otherwise noted) VS = ± 15V n Easy to use voltage feedback topology n Stable with unlimited capacitive loads n Tiny SOT23-5 package — typical circuit layout takes half the space of SO-8 designs n Unity gain frequency: 175 MHz n Bandwidth (−3 dB, AV = +1, RL = 100Ω): 235 MHz n Slew rate: 1300V/µs n Supply Voltages SO-8: 5V to ± 15V SOT23-5: 5V to ± 5V n Characterized for: +5V, ± 5V, ± 15V n Low supply current: 5.3 mA Applications n n n n n n Scanners, color fax, digital copiers PC video cards Cable drivers Digital cameras ADC/DAC buffers Set-top boxes Connection Diagrams 8-Pin SO-8 5-Pin SOT23 DS012348-2 DS012348-1 Top View Top View Ordering Information Package 8-Pin SO-8 5-Pin SOT23-5 Ordering Information LM7121IM LM7121IMX LM7121IM5 LM7121IM5X NSC Drawing Number M08A M08A MA05A MA05A Package Marking LM7121IM LM7121IM A03A A03A Rails 2.5k Tape and Reel 1k Tape and Reel 3k Tape and Reel Supplied As © 1999 National Semiconductor Corporation DS012348 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) Differential Input Voltage (Note 7) Voltage at Input/Output Pin Supply Voltage (V+–V−) Output Short Circuit to Ground (Note 3) Lead Temperature (soldering, 10 sec) 2000V ± 2V (V+)−1.4V, (V−)+1.4V 36V Continuous 260˚C 260˚C Storage Temperature Range Junction Temperature (Note 4) −65˚C to +150˚C 150˚C Operating Ratings (Note 1) Supply Voltage: SO-8 SOT23-5 Junction Temperature Range Thermal Resistance (θJA) M Package, 8-pin Surface Mount SOT23-5 Package 4.5V ≤ VS ≤ 33V 4.5V ≤ VS ≤ 11V −40˚C ≤ TJ ≤ +85˚C 165˚C/W 325˚C/W ± 15V DC Electrical Characteristics Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = +15V, V− = −15V, VCM = VO = 0V and RL > 1 MΩ. Boldface limits apply at the temperature extremes. Symbol Parameter Conditions Typ (Note 5) LM7121I Limit (Note 6) VOS IB IOS RIN CIN CMRR +PSRR −PSRR VCM Input Offset Voltage Input Bias Current Input Offset Current Input Resistance Input Capacitance Common Mode Rejection Ratio Positive Power Supply Rejection Ratio Negative Power Supply Rejection Ratio Input Common-Mode Voltage Range −13 AV VO Large Signal Voltage Gain Output Swing RL = 2 kΩ 13.4 −13.4 RL = 150Ω 10.2 −7.0 ISC Output Short Circuit Current Sinking 52 Sourcing 71 RL = 2 kΩ, VO = 20 VPP 72 −11 65 57 11.1 10.8 −11.2 −11.0 7.75 7.0 −5.0 −4.8 54 44 39 34 CMRR ≥ 70 dB 13 −15V ≤ V− ≤ −10V 81 10V ≤ V+ ≤ 15V 86 Common Mode Differential Mode Common Mode −10V ≤ VCM ≤ 10V 0.9 5.2 0.04 10 3.4 2.3 93 73 70 70 68 68 65 11 8 15 9.5 12 4.3 7 mV max µA max µA max MΩ MΩ pF dB min dB min dB min V min V max dB min V min V max V min V max mA min mA min Units www.national.com 2 ± 15V DC Electrical Characteristics Symbol Parameter (Continued) Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = +15V, V− = −15V, VCM = VO = 0V and RL > 1 MΩ. Boldface limits apply at the temperature extremes. Conditions Typ (Note 5) LM7121I Limit (Note 6) IS Supply Current 5.3 6.6 7.5 mA max Units ± 15V AC Electrical Characteristics Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = 15V, V− = −15V, VCM = VO = 0V and RL > 1 MΩ. Boldface limits apply at the temperature extremes. Symbol Parameter Conditions Typ (Note 5) LM7121I Limit (Note 6) SR GBW φm f (−3 dB) ts tr, tf AD φD en Slew Rate (Note 8) Unity Gain-Bandwidth Phase Margin Bandwidth (Notes 9, 10) Settling Time Rise and Fall Time (Note 10) Differential Gain Differential Phase Input-Referred Voltage Noise in T.H.D. Input-Referred Current Noise Total Harmonic Distortion 2 VPP Output, RL = 150Ω, AV = +2, f = 1 MHz 2 VPP Output, RL = 150Ω, AV = +2, f = 5 MHz 0.065 0.52 % f = 10 kHz 1.9 RL = 100Ω, AV = +1 RL = 100Ω, AV = +2 10 VPP Step, to 0.1%, RL = 500Ω AV = +2, RL = 100Ω, VO = 0.4 VPP AV = +2, RL = 150Ω AV = +2, RL = 150Ω f = 10 kHz AV = +2, RL = 1 kΩ, VO = 20 VPP RL = 1 kΩ 1300 175 63 235 50 74 5.3 0.3 0.65 17 ns ns % Deg V/µs MHz Deg MHz Units ± 5V DC Electrical Characteristics Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = 5V, V− = −5V, VCM = VO = 0V and RL > 1 MΩ. Boldface limits apply at the temperature extremes. Symbol Parameter Conditions Typ (Note 5) LM7121I Limit (Note 6) VOS IB IOS RIN Input Offset Voltage Input Bias Current Input Offset Current Input Resistance Common Mode Differential Mode 1.6 5.5 0.07 6.8 3.4 8 15 9.5 12 4.3 7.0 mV max µA max µA max MΩ MΩ Units 3 www.national.com ± 5V DC Electrical Characteristics Symbol Parameter (Continued) Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = 5V, V− = −5V, VCM = VO = 0V and RL > 1 MΩ. Boldface limits apply at the temperature extremes. Conditions Typ (Note 5) LM7121I Limit (Note 6) CIN CMRR +PSRR −PSRR VCM Input Capacitance Common Mode Rejection Ratio Positive Power Supply Rejection Ratio Negative Power Supply Rejection Ratio Input Common Mode Voltage Range −3 AV VO Large Signal Voltage Gain Output Swing RL = 2 kΩ 3.62 −3.62 RL = 150Ω 3.1 −2.8 ISC Output Short Circuit Current Sinking IS Supply Current 29 5.1 Sourcing 53 RL = 2 kΩ, VO = 3 VPP 66 −2.5 60 58 3.0 2.75 −3.0 −2.70 2.5 2.3 −2.15 −2.00 38 33 21 19 6.4 7.2 CMRR ≥ 60 dB 3 −5V ≤ V− ≤ −3V 78 3V ≤ V+ ≤ 5V 89 Common Mode −2V ≤ VCM ≤ 2V 2.3 75 65 60 65 60 65 60 2.5 pF dB min dB min dB min V min V max dB min V min V max V min V max mA min mA min mA max Units ± 5V AC Electrical Characteristics Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = 5V, V− = −5V, VCM = VO = 0V and RL > 1 MΩ. Boldface limits apply at the temperature extremes. Symbol Parameter Conditions Typ (Note 5) LM7121I Limit (Note 6) SR GBW φm f (−3 dB) ts tr, tf AD Slew Rate (Note 8) Unity Gain-Bandwidth Phase Margin Bandwidth (Notes 9, 10) Settling Time Rise and Fall Time (Note 10) Differential Gain AV = +2, RL = 1 kΩ, VO = 6 VPP RL = 1 kΩ RL = 1 kΩ RL = 100Ω, AV = +1 RL = 100Ω, AV = +2 5 VPP Step, to 0.1%, RL = 500Ω AV = +2, RL = 100Ω, VO = 0.4 VPP AV = +2, RL = 150Ω 520 105 74 160 50 65 5.8 0.3 ns ns % V/µs MHz Deg MHz Units www.national.com 4 ± 5V AC Electrical Characteristics Symbol Parameter (Continued) Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = 5V, V− = −5V, VCM = VO = 0V and RL > 1 MΩ. Boldface limits apply at the temperature extremes. Conditions Typ (Note 5) LM7121I Limit (Note 6) φD en in T.H.D. Differential Phase Input-Referred Voltage Noise Input-Referred Current Noise Total Harmonic Distortion 2 VPP Output, RL = 150Ω, AV = +2, f = 1 MHz 2 VPP Output, RL = 150Ω, AV = +2, f = 5 MHz 0.1 0.6 % f = 10 kHz 2 AV = +2, RL = 150Ω f = 10 kHz 0.65 17 Deg Units +5V DC Electrical Characteristics Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = +5V, V− = 0V, VCM = VO = V+/2 and RL > 1 MΩ. Boldface limits apply at the temperature extremes. Symbol Parameter Conditions Typ (Note 5) LM7121I Limit (Note 6) VOS IB IOS RIN CIN CMRR +PSRR −PSRR VCM Input Offset Voltage Input Bias Current Input Offset Current Input Resistance Input Capacitance Common Mode Rejection Ratio Positive Power Supply Rejection Ratio Negative Power Supply Rejection Ratio Input Common-Mode Voltage Range 1.5 AV VO Large Signal Voltage Gain Output Swing RL = 2 kΩ to V+/2, High RL = 2 kΩ to V+/2, Low RL = 150Ω to V+/2, High RL = 150Ω to V+/2, Low Sourcing Sinking 3.7 1.3 3.48 1.59 33 20 4.8 mA mA mA V RL = 2 kΩ to V+/2 64 CMRR ≥ 45 dB 3.5 V min V max dB 0V ≤ V− ≤ 0.4V 61 dB 4.6V ≤ V+ ≤ 5V 85 dB Common Mode Differential Mode Common Mode 2V ≤ VCM ≤ 3V 2.4 4 0.04 2.6 3.4 2.3 65 mV µA µA MΩ MΩ pF dB Units ISC IS Output Short Circuit Current Supply Current 5 www.national.com +5V AC Electrical Characteristics Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = +5V, V− = 0V, VCM = VO = V+/2 and RL > 1 MΩ. Boldface limits apply at the temperature extremes. Symbol Parameter Conditions Typ (Note 5) LM7121I Limit (Note 6) SR GBW φm f (−3 dB) tr, tf T.H.D. Slew Rate (Note 8) Unity Gain-Bandwidth Phase Margin Bandwidth (Notes 9, 10) Rise and Fall Time (Note 10) Total Harmonic Distortion AV = +2, RL = 1 kΩ to V+/2, VO = 1.8 VPP RL = 1k, to V+/2 RL = 1k to V+/2 RL = 100Ω to V+/2, AV = +1 RL = 100Ω to V+/2, AV = +2 AV = +2, RL = 100Ω, VO = 0.2 VPP 0.6 VPP Output, RL = 150Ω, AV = +2, f = 1 MHz 0.6 VPP Output, RL = 150Ω, AV = +2, f = 5 MHz 0.067 0.33 % 145 80 70 200 45 8 ns V/µs MHz Deg MHz Units 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, 1.5 kΩ in series with 100 pF. 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. 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 into a PC board. Note 5: Typical Values represent the most likely parametric norm. Note 6: All limits are guaranteed by testing or statistical analysis. Note 7: Differential input voltage is measured at VS = ± 15V. Note 8: Slew rate is the average of the rising and fallng slew rates. Note 9: Unity gain operation for ± 5V and ± 15V supplies is with a feedback network of 510Ω and 3 pF in parallel (see the Application Information section). For +5V single supply operation, feedback is a direct short from the output to the inverting input. Note 10: AV = +2 operation with 2 kΩ resistors and 2 pF capacitor from summing node to ground. Typical Performance Characteristics Supply Current vs Supply Voltage TA = 25˚C, RL = 1 MΩ. unless otherwise specified Input Offset Voltage vs Temperature Supply Current vs Temperature DS012348-66 DS012348-67 DS012348-68 www.national.com 6 Typical Performance Characteristics Input Bias Current vs Temperature TA = 25˚C, RL = 1 MΩ. unless otherwise specified (Continued) Input Offset Voltage vs Common Mode Voltage @ VS = ± 15V Input Offset Voltage vs Common Mode Voltage @ VS = ± 5V DS012348-69 DS012348-76 DS012348-77 Short Circuit Current vs Temperature (Sourcing) Short Circuit Current vs Temperature (Sinking) Output Voltage vs Output Current (ISINK, VS = ± 15V) DS012348-78 DS012348-79 DS012348-70 Output Voltage vs Output Current (ISOURCE, VS = ± 15V) Output Voltage vs Output Current (ISOURCE, VS = ± 5V) Output Voltage vs Output Current (ISINK, VS = ± 5V) DS012348-71 DS012348-72 DS012348-73 7 www.national.com Typical Performance Characteristics Output Voltage vs Output Current (ISOURCE, VS = +5V) TA = 25˚C, RL = 1 MΩ. unless otherwise specified (Continued) Output Voltage vs Output Current (ISINK, VS = +5V) CMRR vs Frequency DS012348-74 DS012348-75 DS012348-3 PSRR vs Frequency PSRR vs Frequency Open Loop Frequency Response DS012348-4 DS012348-5 DS012348-88 Open Loop Frequency Response Open Loop Frequency Response Unity Gain Frequency vs Supply Voltage DS012348-89 DS012348-90 DS012348-24 www.national.com 8 Typical Performance Characteristics GBWP @ 10 MHz vs Supply Voltage TA = 25˚C, RL = 1 MΩ. unless otherwise specified (Continued) Large Signal Voltage Gain vs Load, VS = ± 5V Large Signal Voltage Gain vs Load, VS = ± 15V DS012348-25 DS012348-96 DS012348-97 Input Voltage Noise vs Frequency Input Current Noise vs Frequency Input Voltage Noise vs Frequency DS012348-27 DS012348-28 DS012348-29 Input Current Noise vs Frequency Slew Rate vs Supply Voltage Slew Rate vs Input Voltage DS012348-30 DS012348-31 DS012348-32 9 www.national.com Typical Performance Characteristics Slew Rate vs Input Voltage TA = 25˚C, RL = 1 MΩ. unless otherwise specified (Continued) Large Signal Pulse Response, AV = −1, VS = ± 15V Slew Rate vs Load Capacitance DS012348-35 DS012348-33 DS012348-34 Large Signal Pulse Response, AV = −1, VS = ± 5V Large Signal Pulse Response, AV = −1, VS = +5V Large Signal Pulse Response, AV = +1, VS = ± 15V DS012348-36 DS012348-37 DS012348-38 Large Signal Pulse Response, AV = +1, VS = ± 5V Large Signal Pulse Response, AV = +1, VS = +5V Large Signal Pulse Response, AV = +2, VS = ± 15V DS012348-39 DS012348-40 DS012348-41 www.national.com 10 Typical Performance Characteristics Large Signal Pulse Response, AV = +2, VS = ± 5V TA = 25˚C, RL = 1 MΩ. unless otherwise specified (Continued) Large Signal Pulse Response, AV = +2, VS = +5V Small Signal Pulse Response, AV = −1, VS = ± 15V, RL = 100Ω DS012348-42 DS012348-43 DS012348-44 Small Signal Pulse Response, AV = −1, VS = ± 5V, RL = 100Ω Small Signal Pulse Response, AV = −1, VS = +5V, RL = 100Ω Small Signal Pulse Response, AV = +1, VS = ± 15V, RL = 100Ω DS012348-45 DS012348-46 DS012348-47 Small Signal Pulse Response, AV = +1, VS = ± 5V, RL = 100Ω Small Signal Pulse Response, AV = +1, VS = +5V, RL = 100Ω Small Signal Pulse Response, AV = +2, VS = ± 15V, RL = 100Ω DS012348-48 DS012348-49 DS012348-50 11 www.national.com Typical Performance Characteristics Small Signal Pulse Response, AV = +2, VS = ± 5V, RL = 100Ω TA = 25˚C, RL = 1 MΩ. unless otherwise specified (Continued) Small Signal Pulse Response, AV = +2, VS = +5V, RL = 100Ω Closed Loop Frequency Response vs Temperature VS = ± 15V, AV = +1, RL = 100Ω DS012348-51 DS012348-52 DS012348-53 Closed Loop Frequency Response vs Temperature VS = ± 5V, AV = +1, RL = 100Ω Closed Loop Frequency Response vs Temperature VS = +5V, AV = +1, RL = 100Ω Closed Loop Frequency Response vs Temperature VS = ± 15V, AV = +2, RL = 100Ω DS012348-55 DS012348-54 DS012348-58 Closed Loop Frequency Response vs Temperature VS = ± 5V, AV = +2, RL = 100Ω Closed Loop Frequency Response vs Temperature VS = +5V, AV = +2, RL = 100Ω Closed Loop Frequency Response vs Capacitive Load (AV = +1, VS = ± 15V) DS012348-59 DS012348-60 DS012348-61 www.national.com 12 Typical Performance Characteristics Closed Loop Frequency Response vs Capacitive Load (AV = +1, VS = ± 5V) TA = 25˚C, RL = 1 MΩ. unless otherwise specified (Continued) Closed Loop Frequency Response vs Capacitive Load (AV = +2, VS = ± 15V) Closed Loop Frequency Response vs Capacitive Load (AV = +2, VS = ± 5V) DS012348-62 DS012348-63 DS012348-64 Total Harmonic Distortion vs Frequency Total Harmonic Distortion vs Frequency Total Harmonic Distortion vs Frequency DS012348-80 DS012348-81 DS012348-83 Total Harmonic Distortion vs Frequency Undistorted Output Swing vs Frequency Undistorted Output Swing vs Frequency DS012348-82 DS012348-85 DS012348-84 13 www.national.com Typical Performance Characteristics Undistorted Output Swing vs Frequency TA = 25˚C, RL = 1 MΩ. unless otherwise specified (Continued) Total Power Dissipation vs Ambient Temperature DS012348-86 DS012348-65 Application Information The table below, depicts the maximum operating supply voltage for each package type: TABLE 1. Maximum Supply Voltage Values SOT23-5 Single Supply Dual Supplies 10V SO-8 30V In determining maximum operable temperature of the device, make sure the total power dissipation of the device is considered; this includes the power dissipated in the device with a load connected to the output as well as the nominal dissipation of the op amp. The device is capable of tolerating momentary short circits from its output to ground but prolonged operation in this mode will damage the device, if the maximum allowed junction temperation is exceeded. APPLICATION CIRCUITS Current Boost Circuit The circuit in Figure 2 can be used to achieve good linearity along with high output current capability. ± 5V ± 15V Stable unity gain operation is possible with supply voltage of 5V for all capacitive loads. This allows the possibility of using the device in portable applications with low supply voltages with minimum components around it. Above a supply voltage of 6V ( ± 3V Dual supplies), an additional resistor and capacitor (shown below) should be placed in the feedback path to achieve stability at unity gain over the full temperature range. DS012348-92 DS012348-87 FIGURE 1. Typical Circuit for AV = +1 Operation (VS ≥ 6V) The package power dissipation should be taken into account when operating at high ambient temperatures and/or high power dissipative conditions. Refer to the power derating curves in the data sheet for each type of package. FIGURE 2. Simple Circuit to Improve Linearity and Output Drive Current By proper choice of R3, the LM7121 output can be set to supply a minimal amount of current, thereby improving its output linearity. R3 can be adjusted to allow for different loads: R3 = 0.1 RL The circuit above has been set for a load of 100Ω. Reasonable speeds ( < 30 ns rise and fall times) can be expected up to 120 mAPP of load current (see Figure 3 for step response across the load). www.national.com 14 Application Information (Continued) DS012348-93 FIGURE 3. Waveform across a 100Ω Load It is very important to keep the lead lengths to a minimum and to provide a low impedance current path by using a ground-plane on the board. Caution: If RL is removed, the current balance at the output of LM7121 would be disturbed and it would have to supply the full amount of load current. This might damage the part if power dissipation limit is exceeded. Color Video on Twisted Pairs Using Single Supply The circuit shown in Figure 4 can be used to drive in excess of 25 meters length of twisted pair cable with no loss of resolution or picture definition when driving a NTSC monitor at the load end. 15 www.national.com Application Information (Continued) DS012348-94 Note: Pin numbers shown are for SO-8 package. *Input termination of NTSC monitor. FIGURE 4. Single Supply Differential Twister Pair Cable Transmitter/Receiver 8.5V ≤ VCC ≤ 30V Differential Gain and Differential Phase errors measured at the load are less than 1% and 1˚ respectively. RG and CC can be adjusted for various cable lengths to compensate for the line losses and for proper response at the output. Values shown correspond to a twisted pair cable length of 25 meters with about 3 turns/inch (see Figure 5 for step response). The supply voltage can vary from 8.5V up to 30V with the output rise and fall times under 12 ns. With the component values shown, the overall gain from the input to the output is about 1. Even though the transmission line is not terminated in its nominal characteristic impedance of about 600Ω, the resulting reflection at the load is only about 5% of the total signal and in most cases can be neglected. Using 75Ω termination instead, has the advantage of operating at a low impedance and results in a higher realizable bandwidth and signal fidelity. www.national.com 16 Application Information (Continued) DS012348-95 FIGURE 5. Step Response to a 1 VPP Input Signal Measured across the 75Ω Load DS012348-98 DS012348-99 (a) AV = −1 CC = 2 pF for RL = 100Ω CC = Open for RL = Open (b) AV = +2 DS012348-A0 (c) AV = +2, Capacitive Load DS012348-A1 RF = 0Ω, CC = Open for VS < 6V RF = 510Ω, CC = 3 pF for VS ≥ 6V (d) AV = +1 DS012348-A2 (e) AV = +1, VS = +5V, Single Supply Operation FIGURE 6. Application Test Circuits 17 www.national.com Physical Dimensions inches (millimeters) unless otherwise noted 8-Lead (0.150" Wide) Small Outline Package, JEDEC Order Number LM7121IM or LM7121IMX NS Package Number M08A www.national.com 18 LM7121 235 MHz Tiny Low Power Voltage Feedback Amplifier Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 5-Lead Molded SOT23-5 Order Number LM7121IM5 or LM7121IM5X NS Package Number MA05A 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. National Semiconductor Corporation Americas Tel: 1-800-272-9959 Fax: 1-800-737-7018 Email: support@nsc.com www.national.com National Semiconductor Europe Fax: +49 (0) 1 80-530 85 86 Email: europe.support@nsc.com Deutsch Tel: +49 (0) 1 80-530 85 85 English Tel: +49 (0) 1 80-532 78 32 Français Tel: +49 (0) 1 80-532 93 58 Italiano Tel: +49 (0) 1 80-534 16 80 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. National Semiconductor Asia Pacific Customer Response Group Tel: 65-2544466 Fax: 65-2504466 Email: sea.support@nsc.com National Semiconductor Japan Ltd. Tel: 81-3-5639-7560 Fax: 81-3-5639-7507 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.