LM6161/LM6261/LM6361 High Speed Operational Amplifier General Description The LM6161 family of high-speed amplifiers exhibits an excellent speed-power product in delivering 300 V/µs and 50 MHz unity gain stability with only 5 mA of supply current. Further power savings and application convenience are possible by taking advantage of the wide dynamic range in operating supply voltage which extends all the way down to +5V. These amplifiers are built with National’s VIP™ (Vertically Integrated PNP) process which provides fast PNP transistors that are true complements to the already fast NPN devices. This advanced junction-isolated process delivers high speed performance without the need for complex and expensive dielectric isolation. Features n High slew rate 300 V/µs n n n n n n n n High unity gain freq 50 MHz Low supply current 5 mA Fast settling 120 ns to 0.1% Low differential gain < 0.1% Low differential phase 0.1˚ Wide supply range 4.75V to 32V Stable with unlimited capacitive load Well behaved; easy to apply Applications n n n n n Video amplifier High-frequency filter Wide-bandwidth signal conditioning Radar Sonar Connection Diagrams 10–Lead Flatpak DS009057-13 See NS Package Number W10A DS009057-5 See NS Package Number J08A, N08E or M08A Temperature Range Military Industrial Commercial −55˚C ≤ TA ≤ +125˚C −25˚C ≤ TA ≤ +85˚C 0˚C ≤ TA ≤ +70˚C LM6261N LM6361N Package NSC Drawing 8-Pin N08E Molded DIP LM6161J/883 LM6361J 5962-8962101PA 8-Pin J08A Ceramic DIP LM6261M LM6361M 8-Pin Molded M08A Surface Mt. LM6161WG/883 10-Lead 5962-8962101XA Ceramic SOIC LM6161W/883 10-Pin 5962-8962101HA WG10A W10A Ceramic Flatpak VIP™ is a trademark of National Semiconductor Corporation. © 1999 National Semiconductor Corporation DS009057 www.national.com LM6161/LM6261/LM6361 High Speed Operational Amplifier May 1999 Absolute Maximum Ratings (Note 12) 36V See AN-450 “Surface Mounting Methods and Their Effect on Product Reliability” for other methods of soldering surface mount devices. Storage Temp Range −65˚C to +150˚C Max Junction Temperature 150˚C ± 700V ESD Tolerance (Notes 6, 7) ± 8V Operating Ratings (Note 12) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage (V+ − V−) Differential Input Voltage (Note 8) Common-Mode Voltage Range (Note 10) Output Short Circuit to GND (Note 1) Soldering Information Dual-In-Line Package (N, J) Soldering (10 sec.) Small Outline Package (M) Vapor Phase (60 sec.) Infrared (15 sec.) Temperature Range (Note 2) LM6161 LM6261 LM6361 Supply Voltage Range (V+ − 0.7V) to (V− + 0.7V) Continuous −55˚C ≤ TJ ≤ +125˚C −25˚C ≤ TJ ≤ +85˚C 0˚C ≤ TJ ≤ +70˚C 4.75V to 32V 260˚C 215˚C 220˚C DC Electrical Characteristics The following specifications apply for Supply Voltage = ± 15V, VCM = 0, RL ≥ 100 kΩ and RS = 50Ω unless otherwise noted. Boldface limits apply for TJ = TMIN to TMAX; all other limits TJ = 25˚C. Symbol VOS Parameter VOS Input Offset Voltage Average Drift Ib Input Bias Current 5 IOS Input Offset Current Average Drift RIN Input Resistance CIN Input Capacitance AVOL Large Signal Voltage Gain Input Common-Mode 2 150 Differential AV = +1 @ 10 MHz VOUT = ± 10V, RL = 2 kΩ (Note 9) RL = 10 kΩ (Note 9) Supply = ± 15V (Note 3) (Note 3) 7 7 20 mV 10 9 22 Max µV/˚C 3 3 5 µA 6 5 6 Max 350 350 1500 nA 800 600 1900 Max pF 550 550 400 300 400 350 2900 +14.0 4.0 1.8 94 Rejection Ratio ± 10V ≤ V± ≤ ± 16V 90 Rejection Ratio www.national.com (Notes 3, 11) kΩ 750 −10V ≤ VCM ≤ +10V 2 Units 325 (Note 4) Power Supply Limit 1.5 Supply = +5V PSRR LM6361 Limit nA/˚C −13.2 Common-Mode LM6261 Limit 0.4 Voltage Range CMRR LM6161 10 Input Offset Current Drift VCM Typ Input Offset Voltage Drift IOS Conditions V/V Min V/V +13.9 +13.9 +13.8 +13.8 +13.8 +13.7 Volts Min −12.9 −12.9 −12.8 Volts −12.7 −12.7 −12.7 Min 3.9 3.9 3.8 Volts 3.8 3.8 3.7 Min 2.0 2.0 2.1 Volts 2.2 2.2 2.2 Max 80 80 72 dB 74 76 70 Min 80 80 72 dB 74 76 70 Min DC Electrical Characteristics (Continued) The following specifications apply for Supply Voltage = ± 15V, VCM = 0, RL ≥ 100 kΩ and RS = 50Ω unless otherwise noted. Boldface limits apply for TJ = TMIN to TMAX; all other limits TJ = 25˚C. Symbol VO Parameter Output Voltage Swing Conditions Supply = ± 15V and RL = 2 kΩ Typ +14.2 −13.4 Output Short Supply = +5V and RL = 2 kΩ 4.2 (Note 4) 1.3 Source 65 Circuit Current Sink IS 65 Supply Current 5.0 LM6161 LM6261 LM6361 Limit Limit Limit Units (Notes 3, 11) (Note 3) (Note 3) +13.5 +13.5 +13.4 +13.3 +13.3 +13.3 Min −13.0 −13.0 −12.9 Volts −12.7 −12.8 −12.8 Min 3.5 3.5 3.4 Volts 3.3 3.3 3.3 Min 1.7 1.7 1.8 Volts 2.0 1.9 1.9 Max 30 30 30 mA 20 25 25 Min 30 30 30 mA 20 25 25 Min Volts 6.5 6.5 6.8 mA 6.8 6.7 6.9 Max AC Electrical Characteristics The following specifications apply for Supply Voltage = ± 15V, VCM = 0, RL ≥ 100 kΩ and RS = 50Ω unless otherwise noted. Boldface limits apply for TJ = TMIN to TMAX; all other limits TJ = 25˚C. Symbol GBW Parameter Gain-Bandwidth Conditions Typ @ f = 20 MHz 50 Product SR Slew Rate Supply = ± 5V AV = +1 (Note 8) LM6161 LM6261 Limit Limit LM6361 Limit (Notes 3, 11) (Note 3) (Note 3) 40 40 35 30 35 32 Units MHz Min 35 300 MHz 200 200 200 180 180 180 V/µs Min Supply = ± 5V (Note 8) VOUT = 20 VPP 200 V/µs 4.5 MHz 10V Step to 0.1% AV = −1, RL = 2 kΩ 120 ns 45 Deg < 0.1 % 0.1 Deg PBW Power Bandwidth tS Settling Time φm Phase Margin AD Differential Gain φD Differential Phase enp-p Input Noise Voltage NTSC, AV = +4 NTSC, AV = +4 f = 10 kHz inp-p Input Noise Current f = 10 kHz 15 1.5 Note 1: Continuous short-circuit operation at elevated ambient temperature can result in exceeding the maximum allowed junction temperature of 150˚C. Note 2: The typical junction-to-ambient thermal resistance of the molded plastic DIP (N) is 105˚C/W, the molded plastic SO (M) package is 155˚C/W, and the cerdip (J) package is 125˚C/W. All numbers apply for packages soldered directly into a printed circuit board. Note 3: Limits are guaranteed by testing or correlation. Note 4: For single supply operation, the following conditions apply: V+ = 5V, V− = 0V, VCM = 2.5V, VOUT = 2.5V. Pin 1 & Pin 8 (Vos Adjust) are each connected to Pin 4 (V−) to realize maximum output swing. This connection will degrade VOS, VOS Drift, and Input Voltage Noise. Note 5: CL ≤ 5 pF. Note 6: In order to achieve optimum AC performance, the input stage was designed without protective clamps. Exceeding the maximum differential input voltage results in reverse breakdown of the base-emitter junction of one of the input transistors and probable degradation of the input parameters (especially Vos, Ios, and Noise). 3 www.national.com AC Electrical Characteristics (Continued) Note 7: The average voltage that the weakest pin combinations (those involving Pin 2 or Pin 3) can withstand and still conform to the datasheet limits. The test circuit used consists of the human body model of 100 pF in series with 1500Ω. Note 8: VIN = 8V step. For supply = ± 5V, VIN = 5V step. Note 9: Voltage Gain is the total output swing (20V) divided by the input signal required to produce that swing. Note 10: The voltage between V+ and either input pin must not exceed 36V. Note 11: A military RETS electrical test specification is available on request. At the time of printing, the RETS6161X specs complied with all Boldface limits in this column. Note 12: 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 do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Typical Performance Characteristics Supply Current vs Supply Voltage (RL = 10 kΩ, TA = 25˚C unless otherwise specified) Common-Mode Rejection Ratio Power Supply Rejection Ratio DS009057-15 Gain-Bandwidth Product DS009057-16 Propagation Delay Rise and Fall Times DS009057-18 Slew Rate vs Load Capacitance DS009057-17 Gain-Bandwidth Product vs Load Capacitance DS009057-20 DS009057-19 Overshoot vs Capacitive Load Slew Rate DS009057-23 DS009057-21 www.national.com DS009057-22 4 Typical Performance Characteristics (RL = 10 kΩ, TA = 25˚C unless otherwise specified) (Continued) Voltage Gain vs Load Resistance Gain vs Supply Voltage DS009057-25 DS009057-24 Differential Gain (Note 13) Differential Phase (Note 13) DS009057-8 DS009057-7 Note 13: Differential gain and differential phase measured for four series LM6361 op amps configured as unity-gain followers, in series with an LM6321 buffer. Error added by LM6321 is negligible. Test performed using Tektronix Type 520 NTSC test system. Input (2v/div) Output (2v/div) Step Response; Av = +1 (50 ns/div) DS009057-1 5 www.national.com Typical Performance Characteristics (RL = 10 kΩ, TA = 25˚C unless otherwise specified) (Continued) Input Noise Voltage Input Noise Current DS009057-26 Open-Loop Frequency Response Power Bandwidth DS009057-27 Open-Loop Frequency Response DS009057-29 Common-Mode Input Saturation Voltage DS009057-28 Output Impedence (Open-Loop) DS009057-30 DS009057-31 Bias Current vs Common-Mode Voltage Output Saturation Voltage DS009057-33 DS009057-34 DS009057-32 www.national.com 6 Simplified Schematic DS009057-3 Applications Tips ever, improve the stability and transient response and is recommended for every design. 0.01 µF to 0.1 µF ceramic capacitors should be used (from each supply “rail” to ground); if the device is far away from its power supply source, an additional 2.2 µF to 10 µF of tantalum may provide extra noise reduction. Keep all leads short to reduce stray capacitance and lead inductance, and make sure ground paths are low-impedance, especially where heavier currents will be flowing. Stray capacitance in the circuit layout can cause signal coupling across adjacent nodes and can cause gain to unintentionally vary with frequency. Breadboarded circuits will work best if they are built using generic PC boards with a good ground plane. If the op amps are used with sockets, as opposed to being soldered into the circuit, the additional input capacitance may degrade circuit performance. The LM6361 has been compensated for unity-gain operation. Since this compensation involved adding emitterdegeneration resistors to the op amp’s input stage, the open-loop gain was reduced as the stability increased. Gain error due to reduced AVOL is most apparent at high gains; thus, for gains between 5 and 25, the less-compensated LM6364 should be used, and the uncompensated LM6365 is appropriate for gains of 25 or more. The LM6361, LM6364, and LM6365 have the same high slew rate, regardless of their compensation. The LM6361 is unusually tolerant of capacitive loads. Most op amps tend to oscillate when their load capacitance is greater than about 200 pF (especially in low-gain circuits). The LM6361’s compensation is effectively increased with load capacitance, reducing its bandwidth and increasing its stability. Power supply bypassing is not as critical for the LM6361 as it is for other op amps in its speed class. Bypassing will, how- Typical Applications Offset Voltage Adjustment 1 MHz Low-Pass Filter DS009057-4 DS009057-10 7 www.national.com Typical Applications (Continued) Modulator with Differential-to-Single-Ended Converter DS009057-11 www.national.com 8 Physical Dimensions inches (millimeters) unless otherwise noted Ceramic Dual-In-Line Package (J) Order Number LM6161J/883 NS Package Number J08A Molded Package SO (M) Order Number LM6261M or LM6361M NS Package Number M08A 9 www.national.com Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Molded Dual-In-Line Package (N) Order Number LM6261N or LM6361N NS Package Number N08E 10-Pin Ceramic Flatpak Order Number LM6161W/883 NS Package Number W10A www.national.com 10 LM6161/LM6261/LM6361 High Speed Operational Amplifier Notes 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: [email protected] www.national.com National Semiconductor Europe Fax: +49 (0) 1 80-530 85 86 Email: [email protected] 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: [email protected] 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.