LMC7101/LMC7101Q Tiny Low Power Operational Amplifier with Rail-to-Rail Input and Output General Description Features The LMC7101 is a high performance CMOS operational amplifier available in the space saving 5-Pin SOT23 Tiny package. This makes the LMC7101 ideal for space and weight critical designs. The performance is similar to a single amplifier of the LMC6482/LMC6484 type, with rail-to-rail input and output, high open loop gain, low distortion, and low supply currents. The main benefits of the Tiny package are most apparent in small portable electronic devices, such as mobile phones, pagers, notebook computers, personal digital assistants, and PCMCIA cards. The tiny amplifiers can be placed on a board where they are needed, simplifying board layout. ■ Tiny 5-Pin SOT23 package saves space—typical circuit ■ ■ ■ ■ ■ ■ ■ layouts take half the space of 8-Pin SOIC designs Guaranteed specs at 2.7V, 3V, 5V, 15V supplies Typical supply current 0.5 mA at 5V Typical total harmonic distortion of 0.01% at 5V 1.0 MHz gain-bandwidth Similar to popular LMC6482/LMC6484 Rail-to-rail input and output Temperature Range –40°C to 125°C (LMC7101Q) Applications ■ ■ ■ ■ ■ Mobile communications Notebooks and PDAs Battery powered products Sensor interface Automotive applications (LMC7101Q) Connection Diagram 5-Pin SOT23 1199102 Top View Ordering Information Package Part Number LMC7101AIM5 LMC7101AIM5X 5-Pin SOT23 LMC7101BIM5 LMC7101BIM5X LMC7101QM5 LMC7101QM5X Package Marking A00A A00B AT6A Transport Media NSC Drawing Features 1k Units on Tape and Reel 3k Units Tape and Reel 1k Units on Tape and Reel 3k Units Tape and Reel 1k Units on Tape and Reel 3k Units Tape and Reel MF05A –40°C to 125°C Operating range * The LMC7101Q incorporates enhanced manufacturing and support processes for the automotive market, including defect detection methodologies. © 2009 National Semiconductor Corporation 11991 www.national.com LMC7101/LMC7101Q Tiny Low Power Operational Amplifier with Rail-to-Rail Input and Output June 12, 2009 LMC7101/LMC7101Q Lead Temp. (Soldering, 10 sec.) Storage Temperature Range Junction Temperature (Note 4) Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. ESD Tolerance (Note 2) Human Body Model Machine Model Charged Device Model Difference Input Voltage Voltage at Input/Output Pin Supply Voltage (V+ − V−) Current at Input Pin Current at Output Pin (Note 3) Current at Power Supply Pin 260°C −65°C to +150°C 150°C Recommended Operating Conditions (Note 1) 1000V 200V 1000V ±Supply Voltage (V+) + 0.3V, (V−) − 0.3V 2.7V ≤ V+ ≤ 15.5V Supply Voltage Temperature Range LMC7101AI, LMC7101BI LMC7101Q 16V ±5 mA ±35 mA 35 mA −40°C to 85°C −40°C to 125°C Thermal Resistance (θJA) 5-Pin SOT23 325°C/W 2.7V Electrical Characteristics Unless otherwise specified, all limits guaranteed for TJ = 25°C, V+ = 2.7V, V− = 0V, VCM = VO = V+/2 and RL > 1 MΩ. Boldface limits apply at the temperature extremes. Symbol Parameter Typ (Note 5) Conditions LMC7101AI LMC7101BI LMC7101Q Limit Limit Limit (Note 6) (Note 6) (Notes 6, 10) Units VOS Input Offset Voltage Average Drift V+ = 2.7V TCVOS Input Offset Voltage IB Input Bias Current 1.0 64 64 1000 pA max IOS Input Offset Current 0.5 32 32 2000 pA max RIN Input Resistance >1 CMRR Common-Mode Rejection Ratio 0V ≤ VCM ≤ 2.7V V+ = 2.7V VCM Input Common Mode Voltage Range For CMRR ≥ 50 dB PSRR Power Supply Rejection Ratio V+ = 1.35V to 1.65V V− = −1.35V to −1.65V VCM = 0 CIN Common-Mode Input Capacitance 0.11 9 9 Output Swing RL = 10 kΩ mV max μV/°C Tera Ω 70 55 50 50 dB min 0.0 0.0 0.0 0.0 V min 3.0 2.7 2.7 2.7 V max 60 50 45 45 dB min 3 RL = 2 kΩ VO 6 1 pF 2.45 2.15 2.15 2.15 V min 0.25 0.5 0.5 0.5 V max 2.68 2.64 2.64 2.64 V min 0.025 0.06 0.06 0.06 V max 0.5 0.81 0.95 0.81 0.95 0.81 0.95 mA max IS Supply Current SR Slew Rate (Note 8) 0.7 V/μs GBW Gain-Bandwidth Product 0.6 MHz www.national.com 2 Unless otherwise specified, all limits guaranteed for TJ = 25°C, V+ = 3V, V− = 0V, VCM = 1.5V, VO = V+/2 and RL = 1 MΩ. Boldface limits apply at the temperature extremes. Symbol Parameter Typ (Note 5) Conditions 4 6 7 9 7 mV max 1.0 64 64 1000 pA max Input Offset Current 0.5 32 32 2000 pA max Input Resistance >1 VOS Input Offset Voltage TCVOS Input Offset Voltage Average Drift IB Input Current IOS RIN 0.11 CMRR Common-Mode Rejection Ratio VCM Input Common-Mode Voltage Range For CMRR ≥ 50 dB PSRR Power Supply Rejection Ratio V+ = 1.5V to 7.5V V− = −1.5V to −7.5V VO = VCM = 0 CIN Common-Mode Input Capacitance Tera Ω 74 64 60 60 db min 0.0 0.0 0.0 0.0 V min 3.3 3.0 3.0 3.0 V max 80 68 60 60 dBmin 3 RL = 2 kΩ Output Swing RL = 600Ω IS μV/°C 1 0V ≤ VCM ≤ 3V V+ = 3V VO LMC7101AI LMC7101BI LMC7101Q Limit Limit Limit Units (Note 6) (Note 6) (Notes 6, 10) Supply Current 3 pF 2.8 2.6 2.6 2.6 V min 0.2 0.4 0.4 0.4 V max 2.7 2.5 2.5 2.5 V min 0.37 0.6 0.6 0.6 V max 0.5 0.81 0.95 0.81 0.95 0.81 0.95 mA max www.national.com LMC7101/LMC7101Q 3V DC Electrical Characteristics LMC7101/LMC7101Q 5V DC Electrical Characteristics Unless otherwise specified, all limits guaranteed for TJ = 25°C, V+ = 5V, V− = 0V, VCM = 1.5V, VO = V+/2 and RL = 1 MΩ. Boldface limits apply at the temperature extremes. Symbol Parameter LMC7101AI LMC7101BI LMC7101Q Limit Limit Limit Units (Note 6) (Note 6) (Notes 6, 10) 3 5 7 9 7 9 mV max 1 64 64 1000 pA max Input Offset Current 0.5 32 32 2000 pA max Input Resistance >1 82 65 60 60 55 60 55 db min 82 70 65 65 62 65 62 dB min 82 70 65 65 62 65 62 dB min −0.3 −0.20 0.00 −0.20 0.00 −0.2 0.2 V min 5.3 5.20 5.00 5.20 5.00 5.2 4.8 V max 4.9 4.7 4.6 4.7 4.6 4.7 4.54 V min 0.1 0.18 0.24 0.18 0.24 0.18 0.28 V max 4.7 4.5 4.24 4.5 4.24 4.5 4.28 V min 0.3 0.5 0.65 0.5 0.65 0.5 0.8 V max VOS Input Offset Voltage TCVOS Input Offset Voltage Average Drift IB Input Current IOS RIN CMRR Typ (Note 5) Conditions 0.11 V+ = 5V μV/°C 1.0 0V ≤ VCM ≤ 5V LMC7101Q @ 125°C Common-Mode Rejection Ratio Tera Ω 0.2V ≤ VCM ≤ 4.8V V+ = 5V to 15V V− = 0V, VO = 1.5V Positive Power Supply Rejection +PSRR Ratio −PSRR Negative Power Supply Rejection V− = −5V to −15V Ratio V+ = 0V, VO = −1.5V VCM Input Common-Mode Voltage Range CIN Common-Mode Input Capacitance For CMRR ≥ 50 dB 3 RL = 2 kΩ VO Output Swing RL = 600Ω ISC IS pF VO = 0V 24 Sourcing 24 16 11 16 11 16 9 mA min VO = 5V Sinking 19 11 7.5 11 7.5 11 5.8 mA min 0.5 0.85 1.0 0.85 1.0 0.85 1.0 mA max Output Short Circuit Current Supply Current 5V AC Electrical Characteristics Unless otherwise specified, all limits guaranteed for TJ = 25°C, V+ = 5V, V− = 0V, VCM = 1.5V, VO = V+/2 and RL = 1 MΩ. Boldface limits apply at the temperature extremes. Symbol Parameter THD Total Harmonic Distortion SR GBW Typ (Note 5) Conditions f = 10 kHz, AV = −2 LMC7101AI Limit (Note 6) LMC7101BI Limit (Note 6) Units 0.01 % Slew Rate 1.0 V/μs Gain Bandwidth Product 1.0 MHz www.national.com RL = 10 kΩ, VO = 4.0 VPP 4 Unless otherwise specified, all limits guaranteed for TJ = 25°C, V+ = 15V, V− = 0V, VCM = 1.5V, VO = V+/2 and RL = 1 MΩ. Boldface limits apply at the temperature extremes. Symbol Parameter Typ (Note 5) Conditions LMC7101AI LMC7101BI LMC7101Q Limit Limit Limit Units (Note 6) (Note 6) (Notes 6, 10) VOS Input Offset Voltage 0.11 mV max TCVOS Input Offset Voltage Average Drift 1.0 μV/°C IB Input Current 1.0 64 64 1000 pA max IOS Input Offset Current 0.5 32 32 2000 pA max RIN Input Resistance >1 82 70 65 65 60 65 60 dB min 82 70 65 65 62 65 62 dB min 82 70 65 65 62 65 62 dB min −0.3 −0.20 0.00 −0.20 0.00 −0.2 0.2 V min 15.3 15.20 15.00 15.20 15.00 15.2 14.8 V max 340 80 40 80 40 80 30 24 15 10 15 10 15 4 Sourcing 300 34 34 34 Sinking 15 6 6 6 CMRR Common-Mode Rejection Ratio 0V ≤ VCM ≤ 15V LMC7101Q @°125C Tera Ω 0.2V ≤ VCM ≤ 14.8V V+ = 5V to 15V V− = 0V, VO = 1.5V +PSRR Positive Power Supply Rejection Ratio −PSRR Negative Power Supply Rejection V− = −5V to −15V Ratio V+ = 0V, VO = −1.5V V+ = 5V VCM Input Common-Mode Voltage Range For CMRR ≥ 50 dB Sourcing AV Large Signal Voltage Gain (Note 7) RL = 2 kΩ Sinking RL = 600Ω CIN Input Capacitance V+ = 15V 14.4 14.2 14.4 14.2 14.4 14.2 V min 0.16 0.32 0.45 0.32 0.45 0.32 0.45 V max 14.1 13.4 13.0 13.4 13.0 13.4 12.85 V min 0.5 1.0 1.3 1.0 1.3 1.0 1.5 V max 50 30 20 30 20 30 20 50 30 20 30 20 30 20 0.8 1.50 1.71 1.50 1.71 1.50 1.75 RL = 600Ω ISC IS Output Short Circuit Current (Note 9) VO = 0V Sourcing VO = 12V Sinking Supply Current 5 pF 14.7 RL = 2 kΩ Output Swing V/mV 3 V+ = 15V VO V/mV mA min mA max www.national.com LMC7101/LMC7101Q 15V DC Electrical Characteristics LMC7101/LMC7101Q 15V AC Electrical Characteristics Unless otherwise specified, all limits guaranteed for TJ = 25°C, V+ = 15V, V− = 0V, VCM = 1.5V, VO = V+/2 and RL = 1 MΩ. Boldface limits apply at the temperature extremes. Symbol Parameter Typ (Note 5) Conditions LMC7101AI LMC7101BI LMC7101Q Limit Limit Limit (Note 6) (Note 6) (Notes 6, 10) 0.5 0.4 0.5 0.4 0.5 0.4 Units SR Slew Rate (Note 8) V+ = 15V 1.1 GBW Gain-Bandwidth Product V+ = 15V 1.1 MHz φm Phase Margin 45 deg Gm Gain Margin 10 dB en Input-Referred Voltage Noise f = 1 kHz, VCM = 1V 37 in Input-Referred Current Noise f = 1 kHz 1.5 THD Total Harmonic Distortion f = 10 kHz, AV = −2 RL = 10 kΩ, VO = 8.5 VPP 0.01 V/μs min % 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 is 1.5 kΩ in series with 100 pF. Note 3: Applies to both single-supply and split-supply operation. Continuous short operation at elevated ambient temperature can result in exceeding the maximum allowed junction temperature at 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: V+ = 15V, VCM = 1.5V and RL connect to 7.5V. For sourcing tests, 7.5V ≤ VO ≤ 12.5V. For sinking tests, 2.5V ≤ VO ≤ 7.5V. Note 8: V+ = 15V. Connected as a voltage follower with a 10V step input. Number specified is the slower of the positive and negative slew rates. RL = 100 kΩ connected to 7.5V. Amp excited with 1 kHz to produce VO = 10 VPP. Note 9: Do not short circuit output to V+ when V+ is greater than 12V or reliability will be adversely affected. Note 10: When operated at temperature between −40°C and 85°C, the LMC7101Q will meet LMC7101BI specifications. www.national.com 6 Open Loop Frequency Response V+ = 2.7V, V− = 0V, TA = 25°C, unless otherwise specified. Input Voltage vs. Output Voltage 1199116 1199117 Gain and Phase vs. Capacitance Load Gain and Phase vs. Capacitance Load 1199118 1199119 dVOS vs. Supply Voltage dVOS vs. Common Mode Voltage 1199121 1199120 7 www.national.com LMC7101/LMC7101Q 2.7V Typical Performance Characteristics LMC7101/LMC7101Q Sinking Current vs. Output Voltage Sourcing Current vs. Output Voltage 1199122 www.national.com 1199123 8 Open Loop Frequency Response V+ = 3V, V− = 0V, TA = 25°C, unless otherwise specified. Input Voltage vs. Output Voltage 1199125 1199124 Input Voltage Noise vs. Input Voltage Sourcing Current vs. Output Voltage 1199126 1199127 Sinking Current vs. Output Voltage CMRR vs. Input Voltage 1199129 1199128 9 www.national.com LMC7101/LMC7101Q 3V Typical Performance Characteristics LMC7101/LMC7101Q 5V Typical Performance Characteristics Open Loop Frequency Response V+ = 5V, V− = 0V, TA = 25°C, unless otherwise specified. Input Voltage vs. Output Voltage 1199131 1199130 Input Voltage Noise vs. Input Voltage Sourcing Current vs, Output Voltage 1199133 1199132 Sinking Current vs. Output Voltage CMRR vs. Input Voltage 1199135 1199134 www.national.com 10 Open Loop Frequency Response V+ = +15V, V− = 0V, TA = 25°C, unless otherwise specified. Input Voltage vs. Output Voltage 1199136 1199137 Input Voltage Noise vs. Input Voltage Sourcing Current vs. Output Voltage 1199139 1199138 Sinking Current vs. Output Voltage CMRR vs. Input Voltage 1199141 1199140 11 www.national.com LMC7101/LMC7101Q 15V Typical Performance Characteristics LMC7101/LMC7101Q Supply Current vs. Supply Voltage Input Current vs. Temperature 1199142 1199143 Output Voltage Swing vs. Supply Voltage Input Voltage Noise vs. Frequency 1199144 1199145 Positive PSRR vs. Frequency Negative PSRR vs. Frequency 1199146 www.national.com 1199147 12 LMC7101/LMC7101Q CMRR vs. Frequency Open Loop Frequency Response @ −40°C 1199148 1199149 Open Loop Frequency Response @ 25°C Open Loop Frequency Response @ 85°C 1199150 1199151 Maximum Output Swing vs. Frequency Gain and Phase vs. Capacitive Load 1199153 1199152 13 www.national.com LMC7101/LMC7101Q Gain and Phase vs. Capacitive Load Output Impedance vs. Frequency 1199154 1199155 Slew Rate vs. Temperature Slew Rate vs. Supply Voltage 1199157 1199156 Inverting Small Signal Pulse Response Inverting Small Signal Pulse Response 1199158 www.national.com 1199159 14 Inverting Large Signal Pulse Response 1199160 1199161 Inverting Large Signal Pulse Response Inverting Large Signal Pulse Response 1199162 1199163 Non-Inverting Small Signal Pulse Response Non-Inverting Small Signal Pulse Response 1199164 1199165 15 www.national.com LMC7101/LMC7101Q Inverting Small Signal Pulse Response LMC7101/LMC7101Q Non-Inverting Small Signal Pulse Response Non-Inverting Large Signal Pulse Response 1199166 1199167 Non-Inverting Large Signal Pulse Response Non-Inverting Large Signal Pulse Response 1199168 1199169 Stability vs. Capacitive Load Stability vs. Capacitive Load 1199170 www.national.com 1199171 16 LMC7101/LMC7101Q Stability vs. Capacitive Load Stability vs. Capacitive Load 1199175 1199176 Stability vs. Capacitive Load Stability vs. Capacitive Load 1199177 1199178 17 www.national.com LMC7101/LMC7101Q Application Information 1.0 BENEFITS OF THE LMC7101 TINY AMP Size The small footprint of the SOT 23-5 packaged Tiny amp, (0.120 x 0.118 inches, 3.05 x 3.00 mm) saves space on printed circuit boards, and enable the design of smaller electronic products. Because they are easier to carry, many customers prefer smaller and lighter products. Height The height (0.056 inches, 1.43 mm) of the Tiny amp makes it possible to use it in PCMCIA type III cards. 1199108 FIGURE 1. An Input Voltage Signal Exceeds the LMC7101 Power Supply Voltages with No Output Phase Inversion Signal Integrity Signals can pick up noise between the signal source and the amplifier. By using a physically smaller amplifier package, the Tiny amp can be placed closer to the signal source, reducing noise pickup and increasing signal integrity. The Tiny amp can also be placed next to the signal destination, such as a buffer for the reference of an analog to digital converter. Simplified Board Layout The Tiny amp can simplify board layout in several ways. First, by placing an amp where amps are needed, instead of routing signals to a dual or quad device, long pc traces may be avoided. By using multiple Tiny amps instead of duals or quads, complex signal routing and possibly crosstalk can be reduced. Low THD The high open loop gain of the LMC7101 amp allows it to achieve very low audio distortion—typically 0.01% at 10 kHz with a 10 kΩ load at 5V supplies. This makes the Tiny an excellent for audio, modems, and low frequency signal processing. 1199109 FIGURE 2. A ±7.5V Input Signal Greatly Exceeds the 3V Supply in Figure 3 Causing No Phase Inversion Due to RI Applications that exceed this rating must externally limit the maximum input current to ±5 mA with an input resistor as shown in Figure 3. Low Supply Current The typical 0.5 mA supply current of the LMC7101 extends battery life in portable applications, and may allow the reduction of the size of batteries in some applications. Wide Voltage Range The LMC7101 is characterized at 15V, 5V and 3V. Performance data is provided at these popular voltages. This wide voltage range makes the LMC7101 a good choice for devices where the voltage may vary over the life of the batteries. 1199110 2.0 INPUT COMMON MODE FIGURE 3. RI Input Current Protection for Voltages Exceeding the Supply Voltage Voltage Range The LMC7101 does not exhibit phase inversion when an input voltage exceeds the negative supply voltage. Figure 1 shows an input voltage exceeding both supplies with no resulting phase inversion of the output. The absolute maximum input voltage is 300 mV beyond either rail at room temperature. Voltages greatly exceeding this maximum rating, as in Figure 2, can cause excessive current to flow in or out of the input pins, adversely affecting reliability. www.national.com 3.0 RAIL-TO-RAIL OUTPUT The approximate output resistance of the LMC7101 is 180Ω sourcing and 130Ω sinking at VS = 3V and 110Ω sourcing and 80Ω sinking at VS = 5V. Using the calculated output resistance, maximum output voltage swing can be estimated as a function of load. 18 or R1 CIN ≤ R2 Cf which typically provides significant overcompensation. Printed circuit board stray capacitance may be larger or smaller than that of a breadboard, so the actual optimum value for CF may be different. The values of CF should be checked on the actual circuit. (Refer to the LMC660 quad CMOS amplifier data sheet for a more detailed discussion.) 1199111 FIGURE 4. Resistive Isolation of a 330 pF Capacitive Load 5.0 COMPENSATING FOR INPUT CAPACITANCE WHEN USING LARGE VALUE FEEDBACK RESISTORS When using very large value feedback resistors, (usually > 500 kΩ) the large feed back resistance can react with the input capacitance due to transducers, photodiodes, and circuit board parasitics to reduce phase margins. The effect of input capacitance can be compensated for by adding a feedback capacitor. The feedback capacitor (as in Figure 5), Cf is first estimated by: 1199112 FIGURE 5. Cancelling the Effect of Input Capacitance 19 www.national.com LMC7101/LMC7101Q 4.0 CAPACITIVE LOAD TOLERANCE The LMC7101 can typically directly drive a 100 pF load with VS = 15V at unity gain without oscillating. The unity gain follower is the most sensitive configuration. Direct capacitive loading reduces the phase margin of op amps. The combination of the op amp's output impedance and the capacitive load induces phase lag. This results in either an underdamped pulse response or oscillation. Capacitive load compensation can be accomplished using resistive isolation as shown in Figure 4. This simple technique is useful for isolating the capacitive input of multiplexers and A/D converters. LMC7101/LMC7101Q SOT23-5 Tape And Reel Specification TAPE FORMAT Tape Section # Cavities Cavity Status Cover Tape Status Leader 0 (min) Empty Sealed (Start End) 75 (min) Empty Sealed 3000 Filled Sealed 1000 Filled Sealed Trailer 125 (min) Empty Sealed (Hub End) 0 (min) Empty Sealed Carrier TAPE DIMENSIONS 1199113 8 mm 0.130 (3.3) 0.124 (3.15) 0.130 (3.3) 0.126 (3.2) 0.138 ±0.002 (3.5 ±0.05) 0.055 ±0.004 (1.4 ±0.11) 0.157 (4) 0.315 ±0.012 (8 ±0.3) Tape Size DIM A DIM Ao DIM B DIM Bo DIM F DIM Ko DIM P1 DIM W www.national.com 20 LMC7101/LMC7101Q REEL DIMENSIONS 1199114 8 mm Tape Size 7.00 0.059 0.512 0.795 2.165 330.00 1.50 13.00 20.20 55.00 A B C D N 21 0.331 + 0.059/−0.000 8.40 + 1.50/−0.00 0.567 14.40 W1+ 0.078/−0.039 W1 + 2.00/−1.00 W1 W2 W3 www.national.com LMC7101/LMC7101Q Physical Dimensions inches (millimeters) unless otherwise noted 5-Pin SOT23 Package NS Package Number MF05A www.national.com 22 LMC7101/LMC7101Q Notes 23 www.national.com LMC7101/LMC7101Q Tiny Low Power Operational Amplifier with Rail-to-Rail Input and Output Notes For more National Semiconductor product information and proven design tools, visit the following Web sites at: 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 Reference www.national.com/vref Design Made Easy www.national.com/easy www.national.com/powerwise Solutions www.national.com/solutions Mil/Aero www.national.com/milaero PowerWise® Solutions Serial Digital Interface (SDI) www.national.com/sdi Temperature Sensors www.national.com/tempsensors SolarMagic™ www.national.com/solarmagic Wireless (PLL/VCO) www.national.com/wireless www.national.com/training PowerWise® Design University THE CONTENTS OF THIS DOCUMENT ARE PROVIDED IN CONNECTION WITH NATIONAL SEMICONDUCTOR CORPORATION (“NATIONAL”) PRODUCTS. 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