LM6162 High Speed Operational Amplifier General Description The LM6162 family of high-speed amplifiers exhibits an excellent speed-power product, delivering 300 V/s and 100 MHz gain-bandwidth product (stable for gains as low as +2 or -1) 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 VIPTM (Vertically Integrated PNP) process which provides fast 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: n n n n n n n n High gain-bandwidth product: 100 MHz Low supply current: 5 mA Fast settling time: 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 Video amplifier n Wide-bandwidth signal conditioning for image processing (FAX, scanners, laser printers) n Hard disk drive preamplifier n Error amplifier for high-speed switching regulator 300 V/s Connection Diagrams 10-Pin Ceramic Flatpak DS011061-15 Top View See NS Package Number W10A DS011061-2 See NS Package Number N08E or J08A Temperature Range Package Military Industrial Commercial -55C TA +125C -25C TA +85C 0C TA +70C NSC Drawing LM6162N 8-Pin Molded DIP N08E LM6162J/883 8-Pin Ceramic DIP J08A 5962-9216501PA LM6162WG/883 10-Lead Ceramic SOIC WG10A 5962-9216501XA VIPTM is a trademark of National Semiconductor Corporation. (c) 1999 National Semiconductor Corporation DS011061 www.national.com LM6162 High Speed Operational Amplifier May 1999 Connection Diagrams (Continued) Temperature Range Package Military Industrial Commercial -55C TA +125C -25C TA +85C 0C TA +70C LM6162W/883 10-Pin Ceramic Flatpak 5962-9216501HA www.national.com 2 NSC Drawing W10A Absolute Maximum Ratings (Note 1) See AN-450 "Surface Mounting Methods and Their Effect on Product Reliability" for other methods of soldering surface mount devices. Storage Temperature Range -65C TJ +150C Max Junction Temperature 150C 1100V ESD Tolerance (Note 5) 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 2) Common-Mode Input Voltage (Note 3) Output Short Circuit to GND (Note 4) Soldering Information Dual-In-Line Package (N) Soldering (10 seconds) Small Outline Package (M) Vapor Phase (60 seconds) Infrared (15 seconds) 36V 8V Operating Ratings (V+-0.7V) to (V- + 0.7V) Temperature Range (Note 6) LM6162 Supply Voltage Range Continuous -55C TJ +125C 4.75V to 32V 260C 215C 220C DC Electrical Characteristics These limits apply for supply voltage = 15V, VCM = 0V, and RL 100 k, unless otherwise specified. Limits in standard typeface are for TA = TJ = 25C; limits in boldface type apply over the Operating Temperature Range. Symbol Parameter Conditions Typical (Note 7) LM6162 Limit Units (Note 8) VOS 3 Input Offset Voltage Input Offset Voltage 5 8 7 mV max V/C Average Drift Ibias IOS Input Bias Current 2.2 150 Input Offset Current Input Offset Current 3 A 6 max 350 800 max nA 0.3 nA/C 180 k Average Drift RIN Input Resistance CIN Input Capacitance AVOL Large Signal VOUT = 10V, RL = 2 k 1400 Voltage Gain (Note 9) RL = 10 k 6500 Supply = 15V +14.0 VCM Input Common-Mode Differential 2.0 500 Voltage Range -13.2 Supply = +5V 4.0 (Note 10) 1.6 CMRR Common-Mode -10V VCM +10V 100 Rejection Ratio PSRR Power Supply pF 1000 10V VS 16V Rejection Ratio 3 93 V/V min V/V +13.9 V +13.8 min -12.9 V -12.7 max 3.9 V 3.8 min 1.8 V 2.0 max 83 dB 79 min 83 dB 79 min www.national.com DC Electrical Characteristics (Continued) These limits apply for supply voltage = 15V, VCM = 0V, and RL 100 k, unless otherwise specified. Limits in standard typeface are for TA = TJ = 25C; limits in boldface type apply over the Operating Temperature Range. Symbol Parameter Typical (Note 7) Conditions LM6162 Limit Units (Note 8) VO Output Voltage Supply = 15V, RL = 2 k +14.2 Swing -13.4 VO Output Voltage Swing Supply = +5V and RL = 2 k (Note 10) +13.5 V +13.3 min -13.0 V -12.7 max 4.2 1.3 IOSC Output Short Sourcing 65 Circuit Current Sinking IS 65 Supply Current 5.0 3.5 V 3.3 min 1.7 V 2.0 max 30 mA 20 min 30 mA 20 min 6.5 mA 6.8 max AC Electrical Characteristics These limits apply for supply voltage = 15V, VCM = 0V, RL 100 k, and CL 5 pF, unless otherwise specified. Limits in standard typeface are for TA = TJ = 25C; limits in boldface type apply over the Operating Temperature Range. Symbol GBW Parameter Gain-Bandwidth Product Conditions f = 20 MHz Typical (Note 7) 100 LM6162 Limit 80 55 Supply = 5V SR Slew Rate AV = +2 (Note 11) 70 300 MHz min MHz 200 180 Supply = 5V Units (Note 8) V/s min 200 V/s PBW Power Bandwidth VOUT = 20 VPP 4.5 MHz ts Settling Time 10V step, to 0.1% AV = -1, RL = 2 k AV = +2 100 ns 45 deg < 0.1 < 0.1 deg m Phase Margin en Input Noise Voltage NTSC, AV = +2 NTSC, AV = +2 f = 10 kHz in Input Noise Current f = 10 kHz Differential Gain Differential Phase % 10 nV/Hz 1.2 pA/Hz Note 1: Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating the device beyond its rated operating conditions. Note 2: The ESD protection circuitry between the inputs will begin to conduct when the differential input voltage reaches 8V. Note 3: a) In addition, the voltage between the V+ pin and either input pin must not exceed 36V. b) When the voltage applied to an input pin is driven more than 3V below the negative supply pin voltage, a substrate diode begins to conduct. Current through this pin must then be kept less than 20 mA to limit damage from self-heating. Note 4: Although the output current is internally limited, continuous short-circuit operation at elevated ambient temperature can result in exceeding the maximum allowed junction temperature of 150C. Note 5: This value is the average voltage that the weakest pin combinations can withstand and still conform to the datasheet limits. The test circuit used consists of the human body model, 100 pF in series with 1500. Note 6: The typical thermal resistance, junction-to-ambient, of the molded plastic DIP (N package) is 105C/W. For the molded plastic SO (M package), use 155C/W. All numbers apply for packages soldered directly into a printed circuit board. Note 7: Typical values are for TJ = 25C, and represent the most likely parametric norm. Note 8: Limits are guaranteed, by testing or correlation. www.national.com 4 AC Electrical Characteristics (Continued) Note 9: Voltage Gain is the total output swing (20V) divided by the magnitude of the input signal required to produce that swing. Note 10: For single-supply operation, the following conditions apply: V+ = 5V, V- = 0V, VCM = 2.5V, VOUT = 2.5V. Pin 1 and Pin 8 (VOS Adjust pins) are each connected to pin 4 (V-) to realize maximum output swing. This connection will increase the offset voltage. Note 11: VIN = 10V step. For 5V supplies, VIN = 1V step. Note 12: A military RETS electrical test specification is available on request. Typical Performance Characteristics Supply Current vs Supply Voltage RL = 10 k, TA = 25C unless otherwise noted Common-Mode Rejection Ratio Power Supply Rejection Ratio DS011061-16 Gain-Bandwidth Product vs Supply Voltage DS011061-17 Gain-Bandwidth Product vs Load Capacitance DS011061-19 Slew Rate vs Supply Voltage DS011061-18 Propagation Delay, Rise and Fall Times DS011061-21 DS011061-20 Slew Rate vs Load Capacitance DS011061-22 Overshoot vs Load Capacitance DS011061-23 5 DS011061-24 www.national.com Typical Performance Characteristics Output Impedance (Open-Loop) RL = 10 k, TA = 25C unless otherwise noted (Continued) Voltage Gain vs Load Resistance Voltage Gain vs Supply Voltage DS011061-25 DS011061-27 DS011061-26 Differential Gain (Note) Differential Phase (Note 13) Differential Gain (Note 13) DS011061-5 DS011061-4 Note 13: Differential gain and differential phase measured for four series LM6162 op amps configured with gain of +2 each, in series with a 1:16 attenuator and an LM6321 buffer. Error added by LM6321 is negligible. Test performed using Tektronix Type 520 NTSC test system. Step Response; Av = +2 DS011061-6 www.national.com 6 Typical Performance Characteristics RL = 10 k, TA = 25C unless otherwise noted (Continued) Input Noise Current Input Noise Voltage DS011061-28 Power Bandwidth DS011061-29 Open-Loop Frequency Response DS011061-30 Open-Loop High-Frequency Response DS011061-8 Common-Mode Input Voltage Limits DS011061-9 Bias Current vs Common-Mode Voltage Output Saturation Voltage DS011061-32 DS011061-33 DS011061-31 7 www.national.com Simplified Schematic DS011061-1 Application Tips Power supply bypassing is not as critical for LM6162 as it is for other op amps in its speed class. However, bypassing will improve the stability and transient response of the LM6162, and is recommended for every design. 0.01 F to 0.1 F 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 F to 10 F of tantalum may be required for 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 from one pin, input or lead to another, and can cause circuit 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 frequency response. At low gains (+2 or -1), a feedback capacitor Cf from output to inverting input will compensate for the phase lag caused by capacitance at the inverting input. Typically, values from 2 pF to 5 pF work well; however, best results can be obtained by observing the amplifier pulse response and optimizing Cf for the particular layout. The LM6162 has been decompensated for a wider gain-bandwidth product than the LM6361. However, the LM6162 still offers stability at gains of 2 (and -1) or greater over the specified ranges of temperature, power supply voltage, and load. Since this decompensation involved reducing the emitter-degeneration resistors in the op amp's input stage, the DC precision has been increased in the form of lower offset voltage and higher open-loop gain. Other op amps in this family include the LM6361, LM6364, and LM6365. If unity-gain stability is required, the LM6361 should be used. The LM6364 has been decompensated for operation at gains of 5 or more, with corresponding greater gain-bandwidth product (125 MHz, typical) and DC precision. The fully-uncompensated LM6365 offers gain-bandwidth product of 725 MHz, typical, and is stable for gains of 25 or more. All parts in this family, regardless of compensation, have the same high slew rate of 300 V/s (typ). The LM6162 is unusually tolerant of capacitive loads. Most op amps tend to oscillate when their load capacitance is greater than about 200 pF (in low-gain circuits). However, load capacitance on the LM6162 effectively increases its compensation capacitance, thus slowing the op amp's response and reducing its bandwidth. The compensation is not ideal, though, and ringing may occur in low-gain circuits with large capacitive loads. www.national.com 8 Typical Applications Offset Voltage Adjustment Inverting Amplifier, 30 MHz Bandwidth DS011061-11 DS011061-12 Operation on 15V supplies results in wider bandwidth, 50 MHz (typ). Video Cable Driver DS011061-13 * Network required when operating on supply voltage over 5V, for overvoltage protection of LM6321. If 5V supplies are used, omit network and connect output of LM6162 directly to input of LM6321. 9 www.national.com Physical Dimensions inches (millimeters) unless otherwise noted Ceramic Dual-In-Line Package (J) Order Number LM6162J/883 NS Package Number J08A Molded Dual-In-Line Package (N) Order Number LM6162N NS Package Number N08E www.national.com 10 LM6162 High Speed Operational Amplifier Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 10-Pin Ceramic Flatpak Order Number LM6162W/883 NS Package Number W10A 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 Francais 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.