LM8261 NSC | Alldatasheet

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Technical content

Features

(VS =5 V ,TA = 25˚C, Typical values unless specified). n GBWP 21MHz n Wide supply voltage range 2.5V to 30V n Slew rate 12V/µs n Supply current 0.97 mA n Cap load limit Unlimited n Output short circuit current +53mA/−75mA n +/−5% Settling time 400ns (500pF, 100mV PP step) n Input common mode voltage 0.3V beyond rails n Input voltage noise 15nV/ n Input current noise 1pA/ n THD+N < 0.05%

Applications

n TFT-LCD flat panel VCOM driver n A/D converter buffer n High side/low side sensing n Headphone amplifier Output Response with Heavy Capacitive Load DS101084-37 April 2000 LM8261 Single RRIO, High Output Current & Unlimited Cap Load Op Amp in SOT23-5 © 2000 National Semiconductor Corporation DS101084 www.national.com

Ordering Information

Package Ordering Info Pkg Marking Supplied AS NSC Drawing 5-Pin SOT-23 LM8261M5 A45A 1K Units Tape and Reel MA05BLM8261M5X 3K Units Tape and Reel SOT23-5 DS101084-62 Top View LM8261 www.national.com 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 2KV (Note 2) 200V(Note 9) V IN Differential +/−10V Output Short Circuit Duration (Notes 3, 11) Supply Voltage (V + -V −) 32V Voltage at Input/Output pins V + +0.8V, V− −0.8V Storage Temperature Range −65˚C to +150˚C Junction Temperature (Note 4) +150˚C Soldering Information: Infrared or Convection (20 sec.) 235˚C Wave Soldering (10 sec.) 260˚C Operating Ratings Supply Voltage (V+ -V −) 2.5V to 30V Junction Temperature Range(Note 4) −40˚C to +85˚C Package Thermal Resistance,θ JA,(Note 4) SOT23-5 325˚C/W 2.7V Electrical Characteristics Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = 2.7V, V− = 0V, VCM = 0.5V, VO =V +/2, and R L > 1M Ω to V−.Boldfacelimits apply at the temperature extremes. Symbol Parameter Condition Typ (Note 5) Limit (Note 6) Units VOS Input Offset Voltage V CM = 0.5V & VCM = 2.2V +/−0.7 +/−5 +/−7 mV max TC VOS Input Offset Average Drift V CM = 0.5V & VCM = 2.2V (Note 12) +/−2 – µV/C IB Input Bias Current V CM = 0.5V (Note 7) −1.20 −2.00 −2.70 µA maxVCM = 2.2V (Note 7) +0.49 +1.00 +1.60 IOS Input Offset Current V CM = 0.5V & VCM = 2.2V 20 250 400 nA max CMRR Common Mode Rejection Ratio V CM stepped from 0V to 1.0V 100 76 dB minVCM stepped from 1.7V to 2.7V 100 VCM stepped from 0V to 2.7V 70 58 +PSRR Positive Power Supply Rejection Ratio V+ = 2.7V to 5V 104 78 dB min CMVR Input Common-Mode Voltage Range CMRR > 50dB −0.3 −0.1 0.0 V max 3.0 2.8 2.7 V min AVOL Large Signal Voltage Gain V O = 0.5 to 2.2V, R L = 10K to V− 78 70 dB min VO = 0.5 to 2.2V, R L =2 Kt oV− 73 67 dB min VO Output Swing High R L = 10K to V− 2.59 2.49 2.46 V minR L =2 Kt oV− 2.53 2.45 2.41 Output Swing Low R L = 10K to V− 90 100 120 mV max ISC Output Short Circuit Current Sourcing to V− VID = 200mV (Note 10) 48 30 mA min Sinking to V+ VID = −200mV (Note 10) 65 50 mA min IS Supply Current No load, V CM = 0.5V 0.95 1.20 1.50 mA max SR Slew Rate (Note 8) A V = +1,VI =2 VPP 9 – V/µs LM8261 www.national.com3

2.7V Electrical Characteristics(Continued) Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = 2.7V, V− = 0V, VCM = 0.5V, VO =V +/2, and R L > 1M Ω to V−.Boldfacelimits apply at the temperature extremes. Symbol Parameter Condition Typ (Note 5) Limit (Note 6) Units fu Unity Gain-Frequency V I = 10mV, RL =2 KΩ to V+/2 10 – MHz GBWP Gain Bandwidth Product f = 50KHz 21 15.5 MHz min Phim Phase Margin V I = 10mV 50 – Deg en Input-Referred Voltage Noise f = 2KHz, RS =5 0Ω 15 – nV/ in Input-Referred Current Noise f = 2KHz 1 pA/ fmax Full Power Bandwidth Z L = (20pF || 10KΩ )t oV+/2 1 – MHz Unless otherwise specified, all limited guaranteed for TJ = 25˚C, V+ = 5V, V− = 0V, VCM = 1V, VO =V +/2, and R L > 1M Ω to V−.Boldfacelimits apply at the temperature extremes. Symbol Parameter Condition Typ (Note 5) Limit (Note 6) Units VOS Input Offset Voltage V CM =1 V&V CM = 4.5V +/−0.7 +/−5 +/− 7 mV max TC VOS Input Offset Average Drift V CM =1 V&V CM = 4.5V (Note 12) +/−2 – µV/˚C IB Input Bias Current V CM =1 V (Note 7) −1.18 −2.00 −2.70 µA maxVCM = 4.5V (Note 7) +0.49 +1.00 +1.60 IOS Input Offset Current V CM =1 V&V CM = 4.5V 20 250 400 nA max CMRR Common Mode Rejection Ratio V CM stepped from 0V to 3.3V 110 84 dB minVCM stepped from 4V to 5V 100 – VCM stepped from 0V to 5V 80 64 +PSRR Positive Power Supply Rejection Ratio V+ = 2.7V to 5V, VCM = 0.5V 104 78 dB min CMVR Input Common-Mode Voltage Range CMRR > 50dB −0.3 −0.1 0.0 V max 5.3 5.1 5.0 V min AVOL Large Signal Voltage Gain V O = 0.5 to 4.5V, R L = 10K to V− 84 74 70 dB minVO = 0.5 to 4.5V, R L =2 Kt oV− 80 70 VO Output Swing High R L = 10K to V− 4.87 4.75 4.72 V minR L =2 Kt oV− 4.81 4.70 4.66 Output Swing Low R L = 10K to V− 86 125 135 mV max ISC Output Short Circuit Current Sourcing to V − VID = 200mV (Note 10) 53 35 20 mA minSinking to V+ VID = −200mV (Note 10) 75 60 LM8261 www.national.com 4

Unless otherwise specified, all limited guaranteed for TJ = 25˚C, V+ = 5V, V− = 0V, VCM = 1V, VO =V +/2, and R L > 1M Ω to V−.Boldfacelimits apply at the temperature extremes. Symbol Parameter Condition Typ (Note 5) Limit (Note 6) Units IS Supply Current No load, V CM = 1V 0.97 1.25 1.75 mA max SR Slew Rate (Note 8) A V = +1, VI =5 VPP 12 10 V/µs min fu Unity Gain Frequency V I = 10mV, R L =2 KΩ to V+/2 10.5 – MHz GBWP Gain-Bandwidth Product f = 50KHz 21 16 MHz min Phim Phase Margin V I = 10mV 53 – Deg en Input-Referred Voltage Noise f = 2KHz, R S =5 0Ω 15 – nV/ in Input-Referred Current Noise f = 2KHz 1 – pA/ fmax Full Power Bandwidth Z L = (20pF || 10kΩ )t oV+/2 900 – KHz tS Settling Time (+/−5%) 100mV PP Step, 500pF load 400 – ns THD+N Total Harmonic Distortion + Noise R L =1 KΩ to V+/2 f = 10KHz to AV = +2, 4VPP swing 0.05 – % +/−15V Electrical Characteristics Unless otherwise specified, all limited guaranteed for TJ = 25˚C, V+ = 15V, V− = −15V, VCM = 0V, VO = 0V, and R L > 1M Ω to 0V.Boldfacelimits apply at the temperature extremes. Symbol Parameter Condition Typ (Note 5) Limit (Note 6) Units VOS Input Offset Voltage V CM = −14.5V & VCM = 14.5V +/−0.7 +/−7 +/− 9 mV max TC VOS Input Offset Average Drift V CM = −14.5V & VCM = 14.5V (Note 12) +/−2 – µV/˚C IB Input Bias Current V CM = −14.5V (Note 7) −1.05 −2.00 −2.80 µA maxVCM = 14.5V (Note 7) +0.49 +1.00 +1.50 IOS Input Offset Current V CM = −14.5V & VCM = 14.5V 30 275 550 nA max CMRR Common Mode Rejection Ratio V CM stepped from −15V to 13V 100 84 dB minVCM stepped from 14V to 15V 100 – VCM stepped from −15V to 15V 88 74 +PSRR Positive Power Supply Rejection Ratio V+ = 12V to 15V 100 70 dB min −PSRR Negative Power Supply Rejection Ratio V− = −12V to −15V 100 70 dB min CMVR Input Common-Mode Voltage Range CMRR > 50dB −15.3 −15.1 −15.0 V max 15.3 15.1 15.0 V min LM8261 www.national.com5

+/−15V Electrical Characteristics(Continued) Unless otherwise specified, all limited guaranteed for TJ = 25˚C, V+ = 15V, V− = −15V, VCM = 0V, VO = 0V, and R L > 1M Ω to 0V.Boldfacelimits apply at the temperature extremes. Symbol Parameter Condition Typ (Note 5) Limit (Note 6) Units AVOL Large Signal Voltage Gain V O = 0V to +/−13V, R L = 10KΩ 85 78 74 dB minVO = 0V to +/−13V, R L =2 KΩ 79 72 VO Output Swing High R L = 10KΩ 14.83 14.65 14.61 V minR L =2 KΩ 14.73 14.60 14.55 Output Swing Low R L = 10KΩ −14.91 −14.75 −14.65 V maxR L =2 KΩ −14.83 −14.65 −14.60 ISC Output Short Circuit Current Sourcing to ground VID = 200mV (Note 10) 60 40 25 mA minSinking to ground VID = 200mV (Note 10) 100 70 IS Supply Current No load, V CM = 0V 1.30 1.50 1.90 mA max SR Slew Rate (Note 8) AV = +1, VI = 24VPP 15 10 V/µs min fu Unity Gain Frequency V I = 10mV, RL =2 KΩ 14 – MHz GBWP Gain-Bandwidth Product f = 50KHz 24 18 MHz min Phim Phase Margin V I = 10mV 58 – Deg en Input-Referred Voltage Noise f = 2KHz, R S =5 0Ω 15 – nV/ in Input-Referred Current Noise f = 2KHz 1 – pA/ fmax Full Power Bandwidth Z L = 20pF || 10KΩ 160 – KHz tS Settling Time (+/−1%, AV = +1) Positive Step, 5V PP 320 – nsNegative Step, 5VPP 600 – THD+N Total Harmonic Distortion +Noise R L =1 KΩ , f = 10KHz, AV = +2, 28VPP swing 0.01 – % Note 1:Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Rating indicate conditions for which the device is in- tended 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, 1.5kΩ in series with 100pF. 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 onto 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:Positive current corresponds to current flowing into the device. Note 8:Slew rate is the slower of the rising and falling slew rates. Connected as a Voltage Follower. Note 9:Machine Model, 0Ω is series with 200pF. Note 10:Short circuit test is a momentary test. See Note 11. Note 11:Output short circuit duration is infinite for VS ≤ 6V at room temperature and below. For VS > 6V, allowable short circuit duration is 1.5ms. Note 12:Offset voltage average drift determined by dividing the change in VOS at temperature extremes into the total temperature change. LM8261 www.national.com 6

Typical Performance CharacteristicsTA = 25˚C, Unless Otherwise Noted VOS vs. VCM for 3 Representative Units DS101084-30 VOS vs. VCM for 3 Representative Units DS101084-29 VOS vs. VCM for 3 Representative Units DS101084-31 VOS vs. VS for 3 Representative Units DS101084-34 VOS vs. VS for 3 Representative Units DS101084-35 VOS vs. VS for 3 Representative Units DS101084-33 LM8261 www.national.com7

Typical Performance CharacteristicsTA = 25˚C, Unless Otherwise Noted (Continued) IB vs. VCM DS101084-24 IB vs. VS DS101084-36 IS vs. VCM DS101084-27 IS vs. VCM DS101084-28 IS vs. VCM DS101084-68 IS vs. VS (PNP side) DS101084-25 LM8261 www.national.com 8

Typical Performance CharacteristicsTA = 25˚C, Unless Otherwise Noted (Continued) IS vs. VS (NPN side) DS101084-26 Gain/Phase vs. Frequency DS101084-18 Unity Gain Frequency vs. VS DS101084-7 Phase Margin vs. VS DS101084-8 Unity Gain Freq. and Phase Margin vs. VS DS101084-4 Unity Gain Frequency vs. Load DS101084-5 LM8261 www.national.com9

Typical Performance CharacteristicsTA = 25˚C, Unless Otherwise Noted (Continued) Phase Margin vs. Load DS101084-6 Unity Gain Freq. and Phase Margin vs. CL DS101084-9 CMRR vs. Frequency DS101084-14 +PSRR vs. Frequency DS101084-16 −PSRR vs. Frequency DS101084-17 Output Voltage vs. Output Sourcing Current DS101084-46 LM8261 www.national.com 10

Typical Performance CharacteristicsTA = 25˚C, Unless Otherwise Noted (Continued) Output Voltage vs. Output Sourcing Current DS101084-44 Output Voltage vs. Output Sinking Current DS101084-45 Max Output Swing vs. Load DS101084-10 Max Output Swing vs. Frequency DS101084-11 % Overshoot vs. Cap Load DS101084-48 ±5% Settling Time vs. Cap Load DS101084-47 LM8261 www.national.com11

Typical Performance CharacteristicsTA = 25˚C, Unless Otherwise Noted (Continued) +SR vs. Cap Load DS101084-51 −SR vs. Cap Load DS101084-52 +SR vs. Cap Load DS101084-49 −SR vs. Cap Load DS101084-50 Settling Time vs. Error Voltage DS101084-43 Settling Time vs. Error Voltage DS101084-42 LM8261 www.national.com 12

Typical Performance CharacteristicsTA = 25˚C, Unless Otherwise Noted (Continued) Input Noise Voltage/Current vs. Frequency DS101084-15 Input Noise Voltage for Various VCM DS101084-13 Input Noise Current for Various VCM DS101084-12 Input Noise Voltage vs. VCM DS101084-55 Input Noise Current vs. VCM DS101084-54 THD+N vs. Frequency DS101084-23 LM8261 www.national.com13

Typical Performance CharacteristicsTA = 25˚C, Unless Otherwise Noted (Continued) THD+N vs. Frequency DS101084-22 THD+N vs. Frequency DS101084-21 THD+N vs. Amplitude DS101084-19 THD+N vs. Amplitude DS101084-20 Small Signal Step Response DS101084-38 Large Signal Step Response DS101084-40 LM8261 www.national.com 14

Application Notes:(Continued) Other Application Hints: The use of supply decoupling is mandatory in most applica- tions. As with most relatively high speed/high output current Op Amps, best results are achieved when each supply line is decoupled with two capacitors; a small value ceramic ca- pacitor (∼0.01µF) placed very close to the supply lead in ad- dition to a large value Tantalum or Aluminum ( > 4.7µF). The large capacitor can be shared by more than one device if necessary. The small ceramic capacitor maintains low sup- ply impedance at high frequencies while the large capacitor will act as the charge″bucket″ for fast load current spikes at the Op Amp output. The combination of these capacitors will provide supply decoupling and will help keep the Op Amp os- cillation free under any load. LM8261 Advantages: Compared to other Rail-to-Rail Input/Output devices, the LM8261 offers several advantages such as:

  • Improved cross over distortion.
  • Nearly constant supply current throughout the output voltage swing range and close to either rail.
  • Consistent stability performance for all input/output volt- age and current conditions.
  • Nearly constant Unity gain frequency (fu) and Phase Mar- gin (Phim ) for all operating supplies and load conditions.
  • No output phase reversal under input overload condition. LM8261 www.national.com 18

Physical Dimensionsinches (millimeters) unless otherwise noted 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. 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 Corporation Americas Tel: 1-800-272-9959 Fax: 1-800-737-7018 Email: support@nsc.com National Semiconductor Europe 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 Response Group Tel: 65-2544466 Fax: 65-2504466 Email: ap.support@nsc.com National Semiconductor Japan Ltd. Tel: 81-3-5639-7560 Fax: 81-3-5639-7507 www.national.com 5-Pin SOT23-5 LM8261 Single RRIO, High Output Current & Unlimited Cap Load Op Amp in SOT23-5 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.