ANALOG DEVICES AD8397

Rail-to-Rail, High Output Current Amplifier AD8397 FEATURES PIN CONFIGURATION Dual operational amplifier OUT1 1 8 +V S –IN1 2 7 OUT2 Voltage feedback +IN1 3 6 –IN2 Wide supply range from 3 V to 24 V –V 4 5 +IN2 S Rail-to-rail output Output swing to within 0.5 V of supply rails Figure 1. 8-Lead SOIC High linear output current 310 mA peak into 32 Ω on ±12 V supplies while maintaining 1.50 −80 dBc SFDR 1.25 Low noise 1.00 0.75 4.5 nV/√Hz voltage noise density at 100 kHz 0.50 1.5 pA/√Hz current noise density at 100 kHz 0.25 High speed 0 69 MHz bandwidth (G = 1, −3 dB) –0.25 53 V/μs slew rate (R = 25 Ω) LOAD –0.50 –0.75 APPLICATIONS –1.00 Twisted-pair line drivers –1.25 Audio applications –1.50 0 2 4 6 8 101214161820 General-purpose ac applications TIME (µs) Figure 2. Output Swing, VS = ±1.5 V, RL = 25 Ω GENERAL DESCRIPTION 12 The AD8397 comprises two voltage feedback operational amplifiers capable of driving heavy loads with excellent linearity. The 9 common-emitter, rail-to-rail output stage surpasses the output 6 voltage capability of typical emitter-follower output stages and can swing to within 0.5 V of either rail while driving a 25 Ω 3 load. The low distortion, high output current, and wide output 0 dynamic range make the AD8397 ideal for applications that –3 require a large signal swing into a heavy load. Fabricated with Analog Devices, Inc., high speed extra fast –6 complementary bipolar high voltage (XFCB-HV) process, the –9 high bandwidth and fast slew rate of the AD8397 keep distortion to a minimum. The AD8397 is available in a standard 8-lead SOIC_N –12 0 2 4 6 8 101214161820 package and, for higher power dissipating applications, a thermally TIME (µs) enhanced 8-lead SOIC_N_EP package. Both packages can operate Figure 3. Output Swing, V = ±12 V, R = 100 Ω S L from −40°C to +85°C. Rev. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Fax: 781.461.3113 ©2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. V (V) V (V) OUT OUT 05069-001 05069-032 05069-031 AD8397 TABLE OF CONTENTS Features .............................................................................................. 1  Typical Performance Characteristics ..............................................8  Applications....................................................................................... 1  Applications Information .............................................................. 11  General Description ......................................................................... 1  Power Supply and Decoupling.................................................. 11  Pin Configuration............................................................................. 1  Layout Considerations............................................................... 11  Revision History ............................................................................... 2  Unity-Gain Output Swing......................................................... 11  Specifications..................................................................................... 3  Capacitive Load Drive ............................................................... 12  Absolute Maximum Ratings............................................................ 7  Outline Dimensions....................................................................... 13  Maximum Power Dissipation ..................................................... 7  Ordering Guide .......................................................................... 13  ESD Caution.................................................................................. 7  REVISION HISTORY 5/11—Rev. 0 to Rev. A Changes to Applications Section and General Description Section................................................................................................ 1 Changed Maximum Output Current Parameter to Peak AC Output Current Parameter, Table 1................................................ 3 Added Note 1 and Note 2, Table 1.................................................. 3 Changed Maximum Output Current Parameter to Peak AC Output Current Parameter, Table 2................................................ 4 Added Note 1 and Note 2, Table 2.................................................. 4 Changed Maximum Output Current Parameter to Peak AC Output Current Parameter, Table 3................................................ 5 Added Note 1 and Note 2, Table 3.................................................. 5 Changed Maximum Output Current Parameter to Peak AC Output Current Parameter, Table 4................................................ 6 Added Note 1 and Note 2, Table 4.................................................. 6 Changes to Figure 4.......................................................................... 7 Changed General Description Section to Applications Information Section ....................................................................... 11 Updated Outline Dimensions ....................................................... 13 1/05—Revision 0: Initial Version Rev. A | Page 2 of 16 AD8397 SPECIFICATIONS 1 VS = ±1.5 V or +3 V (at TA = 25°C, G = +1, RL = 25 Ω, unless otherwise noted) . Table 1. Parameter Test Conditions/Comments Min Typ Max Unit DYNAMIC PERFORMANCE −3 dB Bandwidth V = 0.1 V p-p 50 MHz OUT 0.1 dB Flatness VOUT = 0.1 V p-p 3.6 MHz Large Signal Bandwidth VOUT = 2.0 V p-p 9 MHz Slew Rate VOUT = 0.8 V p-p 32 V/μs NOISE/DISTORTION PERFORMANCE Distortion (Worst Harmonic) fC = 100 kHz, VOUT = 1.4 V p-p, G = +2 −90 dBc Input Voltage Noise f = 100 kHz 4.5 nV/√Hz Input Current Noise f = 100 kHz 1.5 pA/√Hz DC PERFORMANCE Input Offset Voltage 1.0 2.5 mV T − T 2.5 mV MIN MAX Input Offset Voltage Match 1.0 2.0 mV Input Bias Current 200 900 nA TMIN − TMAX 1.3 μA Input Offset Current 50 300 nA Open-Loop Gain V = ±0.5 V 81 88 dB OUT INPUT CHARACTERISTICS Input Resistance f = 100 kHz 87 kΩ Input Capacitance 1.4 pF Common-Mode Rejection ΔV = ±1 V −71 −80 dB CM OUTPUT CHARACTERISTICS Output Resistance 0.2 Ω +Swing R = 25 Ω +1.39 +1.43 V LOAD P −Swing RLOAD = 25 Ω −1.4 −1.37 VP +Swing RLOAD = 100 Ω +1.45 +1.48 VP −Swing RLOAD = 100 Ω −1.47 −1.44 VP 2 Peak AC Output Current SFDR ≤ −70 dBc, f = 100 kHz, V = 0.7 V , R = 4.1 Ω 170 mA OUT P LOAD POWER SUPPLY Operating Range (Dual Supply) ±1.5 ±12.0 V Supply Current 6 7 8.5 mA/Amp Power Supply Rejection ΔV = ±0.5 V −70 −82 dB S 1 Unity gain used to facilitate characterization. To improve stability, a gain of 2 or greater is recommended. 2 Peak ac output current specification assumes normal ac operation and is not valid for continuous dc operation. Rev. A | Page 3 of 16 AD8397 1 V = ±2.5V or +5 V (at T = 25°C, G = +1, R = 25 Ω, unless otherwise noted) . S A L Table 2. Parameter Test Conditions/Comments Min Typ Max Unit DYNAMIC PERFORMANCE −3 dB Bandwidth V = 0.1 V p-p 60 MHz OUT 0.1 dB Flatness V = 0.1 V p-p 4.8 MHz OUT Large Signal Bandwidth V = 2.0 V p-p 14 MHz OUT Slew Rate VOUT = 2.0 V p-p 53 V/μs NOISE/DISTORTION PERFORMANCE Distortion (Worst Harmonic) f = 100 kHz, V = 2 V p-p, G = +2 −98 dBc C OUT Input Voltage Noise f = 100 kHz 4.5 nV/√Hz Input Current Noise f = 100 kHz 1.5 pA/√Hz DC PERFORMANCE Input Offset Voltage 1.0 2.4 mV TMIN − TMAX 2.5 mV Input Offset Voltage Match 1.0 2.0 mV Input Bias Current 200 900 nA T − T 1.3 μA MIN MAX Input Offset Current 50 300 nA Open-Loop Gain VOUT = ±1.0 V 85 90 dB INPUT CHARACTERISTICS Input Resistance f = 100 kHz 87 kΩ Input Capacitance 1.4 pF Common-Mode Rejection ΔVCM = ±1 V −76 −80 dB OUTPUT CHARACTERISTICS Output Resistance 0.2 Ω +Swing RLOAD = 25 Ω +2.37 +2.42 VP −Swing R = 25 Ω −2.37 −2.32 V LOAD P +Swing R = 100 Ω +2.45 +2.48 V LOAD P −Swing R = 100 Ω −2.46 −2.42 V LOAD P 2 Peak AC Output Current SFDR ≤ −70 dBc, f = 100 kHz, VOUT = 1.0 VP, RLOAD = 4.3 Ω 230 mA POWER SUPPLY Operating Range (Dual Supply) ±1.5 ±12.6 V Supply Current 7 9 12 mA/Amp Power Supply Rejection ΔVS = ±0.5 V −75 −85 dB 1 Unity gain used to facilitate characterization. To improve stability, a gain of 2 or greater is recommended. 2 Peak ac output current specification assumes normal ac operation and is not valid for continuous dc operation. Rev. A | Page 4 of 16 AD8397 1 V = ±5 V or +10 V (at T = 25°C, G = +1, R = 25 Ω, unless otherwise noted) . S A L Table 3. Parameter Test Conditions/Comments Min Typ Max Unit DYNAMIC PERFORMANCE −3 dB Bandwidth V = 0.1 V p-p 66 MHz OUT 0.1 dB Flatness V = 0.1 V p-p 6.5 MHz OUT Large Signal Bandwidth V = 2.0 V p-p 14 MHz OUT Slew Rate VOUT = 4.0 V p-p 53 V/μs NOISE/DISTORTION PERFORMANCE Distortion (Worst Harmonic) f = 100 kHz, V = 6 V p-p, G = +2 −94 dBc C OUT Input Voltage Noise f = 100 kHz 4.5 nV/√Hz Input Current Noise f = 100 kHz 1.5 pA/√Hz DC PERFORMANCE Input Offset Voltage 1.0 2.5 mV TMIN − TMAX 2.5 mV Input Offset Voltage Match 1.0 2.0 mV Input Bias Current 200 900 nA T − T 1.3 μA MIN MAX Input Offset Current 50 300 nA Open-Loop Gain VOUT = ±2.0 V 85 94 dB INPUT CHARACTERISTICS Input Resistance f = 100 kHz 87 kΩ Input Capacitance 1.4 pF Common-Mode Rejection ΔVCM = ±1 V −84 −94 dB OUTPUT CHARACTERISTICS Output Resistance 0.2 Ω +Swing RLOAD = 25 Ω +4.7 +4.82 VP −Swing R = 25 Ω −4.74 −4.65 V LOAD P +Swing R = 100 Ω +4.92 +4.96 V LOAD P −Swing R = 100 Ω −4.92 −4.88 V LOAD P 2 Peak AC Output Current SFDR ≤ −80 dBc, f = 100 kHz, VOUT = 3 VP, RLOAD = 12 Ω 250 mA POWER SUPPLY Operating Range (Dual Supply) ±1.5 ±12.6 V Supply Current 7 9 12 mA/Amp Power Supply Rejection ΔVS = ±0.5 V −76 −85 dB 1 Unity gain used to facilitate characterization. To improve stability, a gain of 2 or greater is recommended. 2 Peak ac output current specification assumes normal ac operation and is not valid for continuous dc operation. Rev. A | Page 5 of 16 AD8397 1 V = ±12 V or +24 V (at T = 25°C, G = +1, R = 25 Ω, unless otherwise noted) . S A L Table 4. Parameter Test Conditions/Comments Min Typ Max Unit DYNAMIC PERFORMANCE −3 dB Bandwidth V = 0.1 V p-p 69 MHz OUT 0.1 dB Flatness V = 0.1 V p-p 7.6 MHz OUT Large Signal Bandwidth V = 2.0 V p-p 14 MHz OUT Slew Rate VOUT = 4.0 V p-p 53 V/μs NOISE/DISTORTION PERFORMANCE Distortion (Worst Harmonic) f = 100 kHz, V = 20 V p-p, G = +5 −84 dBc C OUT Input Voltage Noise f = 100 kHz 4.5 nV/√Hz Input Current Noise f = 100 kHz 1.5 pA/√Hz DC PERFORMANCE Input Offset Voltage 1.0 3.0 mV TMIN − TMAX 2.5 mV Input Offset Voltage Match 1.0 2.0 mV Input Bias Current 200 900 nA T − T 1.3 μA MIN MAX Input Offset Current 50 300 nA Open-Loop Gain 90 96 dB VOUT = ±3.0 V INPUT CHARACTERISTICS Input Resistance f = 100 kHz 87 kΩ Input Capacitance 1.4 pF Common-Mode Rejection ∆V = ±1 V −85 −96 dB CM OUTPUT CHARACTERISTICS Output Resistance 0.2 Ω +Swing R = 100 Ω +11.82 +11.89 V LOAD P −Swing R = 100 Ω −11.83 −11.77 V LOAD P 2 Peak AC Output Current SFDR ≤ −80 dBc, f = 100 kHz, V = 10 V , R = 32 Ω 310 mA OUT P LOAD POWER SUPPLY Operating Range (Dual Supply) ±1.5 ±12.6 V Supply Current 8.5 11 15 mA/Amp Power Supply Rejection ∆VS = ±0.5 V −76 −86 dB 1 Unity gain used to facilitate characterization. To improve stability, a gain of 2 or greater is recommended. 2 Peak ac output current specification assumes normal ac operation and is not valid for continuous dc operation. Rev. A | Page 6 of 16 AD8397 ABSOLUTE MAXIMUM RATINGS MAXIMUM POWER DISSIPATION Table 5. The maximum power that can be dissipated safely by the AD8397 Parameter Rating is limited by the associated rise in junction temperature. The Supply Voltage 26.4 V maximum safe junction temperature for plastic encapsulated 1 Power Dissipation See Figure 4 devices is determined by the glass transition temperature of the Storage Temperature Range −65°C to +125°C plastic, approximately 150°C. Temporarily exceeding this limit Operating Temperature Range −40°C to +85°C may cause a shift in parametric performance due to a change in Lead Temperature (Soldering, 10 sec) 300°C the stresses exerted on the die by the package. Junction Temperature 150°C 4.5 T = 150°C Stresses above those listed under Absolute Maximum Ratings J 4.0 may cause permanent damage to the device. This is a stress 3.5 rating only; functional operation of the device at these or any other conditions above those indicated in the operational 3.0 section of this specification is not implied. Exposure to absolute 2.5 maximum rating conditions for extended periods may affect 2.0 device reliability. 1 Thermal resistance for standard JEDEC 4-layer board: 1.5 8-lead SOIC_N: θJA = 157.6°C/W 8-LEAD SOIC 1.0 8-Lead SOIC_N_EP: θ = 47.2°C/W JA 0.5 0 –40–30–20–10 0 1020 3040506070 8090 AMBIENT TEMPERATURE (°C) Figure 4. Maximum Power Dissipation vs. Ambient Temperature ESD CAUTION Rev. A | Page 7 of 16 MAXIMUM POWER DISSIPATION (W) 05069-020 AD8397 TYPICAL PERFORMANCE CHARACTERISTICS 100 0 V OUT 80 –10 60 –20 40 –30 V IN OUT 1 20 –40 0 OUT 2 –50 –20 –60 –40 –70 –60 –80 –80 –100 –90 0 20 40 60 80 100 120 140 160 180 200 0.01 0.1 1 10 100 TIME (ns) FREQUENCY (MHz) Figure 5. Small Signal Pulse Response (G = +1, V = ±5 V, R = 25 Ω) Figure 8. Common-Mode Rejection (CMRR) vs. Frequency S L (V = ±5 V, R = 25 Ω) S L 5 0 –10 4 –20 V V IN OUT –30 3 –40 –50 2 OUT 1 –60 –70 1 –80 OUT 2 –90 0 –100 –1 –110 0.01 0.1 1 10 100 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 FREQUENCY (MHz) TIME (μs) Figure 6. Large Signal Pulse Response (0 V to 4 V, VS = ±5 V, RL = 25 Ω) Figure 9. Output-to-Output Crosstalk vs. Frequency (VS = ±5 V, VO = 1 V p-p, RL = 25 Ω) 3.0 6 0.3 V IN V OUT 2.5 5 0.2 2.0 4 0.1 1.5 3 1.0 2 0 V = 100mV p-p O 0.5 1 –0.1 0 0 –0.2 –0.5 –1 –1.0 –2 –0.3 0 40 80 120 160 200 240 280 320 360 400 0.1 1 10 TIME (ns) FREQUENCY (MHz) Figure 7. Output Overdrive Recovery Figure 10. 0.1 dB Flatness (VS = ±5 V, Gain = +2, RL = 25 Ω) (VS = ±5 V, VO = 0.1 V p-p, Gain = +1, RL = 25 Ω) Rev. A | Page 8 of 16 INPUT (V) OUTPUT (V) OUTPUT (mV) 05069-022 05069-029 OUTPUT (V) 05069-004 GAIN (dB) CROSSTALK (dB) CMRR (dB) 05069-007 05069-006 05069-005 AD8397 10 10 G = +1 0 0 G = +1 G = +2 G = +2 –10 –10 G = +10 –20 –20 G = +10 –30 –30 –40 –40 0.01 0.1 1 10 100 0.01 0.1 1 10 100 FREQUENCY (MHz) FREQUENCY (MHz) Figure 11. Small Signal Frequency Response for Various Gains Figure 14. Large Signal Frequency Response for Various Gains (VS = ±5 V, VO = 0.1 V p-p, RL = 25 Ω) (VS = ±5 V, VO = 2 V p-p, RL = 25 Ω) 10 20 12V 10 0 5V 0 –10 –10 12V –20 –20 2.5V –30 –30 2.5V 5V –40 –40 0.01 0.1 1 10 100 0.01 0.1 1 10 100 FREQUENCY (MHz) FREQUENCY (MHz) Figure 12. Small Signal Frequency Response for Various Supplies Figure 15. Large Signal Frequency Response for Various Supplies (Gain = +1, V = 0.1 V p-p, R = 25 Ω) (Gain = +1, V = 2 V p-p, R = 25 Ω) O L O L 0 100 135 –10 80 90 PHASE –20 60 45 –30 40 0 GAIN –40 +PSRR 20 –45 –50 –PSRR 0 –90 –60 –20 –135 –70 –80 –40 –180 0.001 0.01 0.1 1 10 100 1000 0.01 0.1 1 10 100 FREQUENCY (MHz) FREQUENCY (MHz) Figure 13. Open Loop Gain and Phase vs. Frequency Figure 16. Power Supply Rejection Ratio (PSRR) vs. Frequency (VS = ±5 V, RL = 25 Ω) (VS = ±5 V, RL = 25 Ω) Rev. A | Page 9 of 16 OPEN-LOOP GAIN (dB) GAIN (dB) NORMALIZED GAIN (dB) 05069-009 05069-008 PHASE (Degrees) 05069-010 GAIN (dB) NORMALIZED GAIN (dB) PSRR (dB) 05069-013 05069-012 05069-011 AD8397 0 –40 –10 –50 –20 –30 –60 –40 –70 –50 –60 –80 –70 –90 SECOND –80 HARMONIC SECOND –90 –100 HARMONIC –100 THIRD –110 HARMONIC THIRD –110 HARMONIC –120 –120 0.01 0.1 1 10 01 23 456 789 10 FREQUENCY (MHz) OUTPUT VOLTAGE (V p-p) Figure 17. Distortion vs. Frequency Figure 20. Distortion vs. Output Voltage @ 100 kHz, (VS = ±5 V, VO = 2 V p-p, G = +2, RL = 25 Ω) (VS = ±5 V, G = +2, RL = 25 Ω) –40 –40 –50 –50 –60 –60 –70 –70 –80 –80 SECOND SECOND HARMONIC HARMONIC –90 –90 –100 –100 THIRD THIRD HARMONIC HARMONIC –110 –110 –120 –120 0 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 0 2 4 6 8 10 12 14 16 18 20 22 24 OUTPUT VOLTAGE (V p-p) OUTPUT VOLTAGE (V p-p) Figure 18. Distortion vs. Output Voltage @ 100 kHz, Figure 21. Distortion vs. Output Voltage @ 100 kHz, (V = ±1.5 V, G = +2, R = 25 Ω) (V = ±12 V, G = +5, R = 50 Ω) S L S L –40 –50 –60 –70 –80 –90 SECOND HARMONIC –100 –110 THIRD HARMONIC –120 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 OUTPUT VOLTAGE (V p-p) Figure 19. Distortion vs. Output Voltage @ 100 kHz, (VS = ±2.5 V, G = +2, RL = 25 Ω) Rev. A | Page 10 of 16 DISTORTION (dBc) DISTORTION (dBc) DISTORTION (dBc) 05069-025 05069-024 05069-023 DISTORTION (dBc) DISTORTION (dBc) 05069-027 05069-026 AD8397 APPLICATIONS INFORMATION The AD8397 is a voltage feedback operational amplifier that When the AD8397 is configured as a differential driver, as in features an H-bridge input stage and common-emitter, rail-to-rail some line driving applications, provide a symmetrical layout to output stage. The AD8397 can operate from a wide supply range, the extent possible in order to maximize balanced performance. ±1.5 V to ±12 V. When driving light loads, the rail-to-rail output is When running differential signals over a long distance, the traces capable of swinging to within 0.2 V of either rail. The output can on the PCB should be close together or any differential wiring also deliver high linear output current when driving heavy loads, should be twisted together to minimize the area of the inductive up to 310 mA into 32 Ω while maintaining −80 dBc SFDR. The loop that is formed. This reduces the radiated energy and makes AD8397 is fabricated on Analog Devices proprietary XFCB-HV. the circuit less susceptible to RF interference. Adherence to stripline design techniques for long signal traces (greater than POWER SUPPLY AND DECOUPLING approximately 1 inch) is recommended. The AD8397 can be powered with a good quality, well-regulated, UNITY-GAIN OUTPUT SWING low noise supply from ±1.5 V to ±12 V. Pay careful attention to decoupling the power supply. Use high quality capacitors with When operating the AD8397 in a unity-gain configuration, low equivalent series resistance (ESR), such as multilayer the output does not swing to the rails and is constrained by ceramic capacitors (MLCCs), to minimize the supply voltage the H-bridge input. This can be seen by comparing the output ripple and power dissipation. Locate a 0.1 μF MLCC decoupling overdrive recovery in Figure 7 and the input overdrive recovery in capacitor(s) no more than 1/8 inch away from the power supply Figure 22. To avoid overdriving the input and to realize the full pin(s). A large tantalum 10 μF to 47 μF capacitor is recommended swing afforded by the rail-to-rail output stage, use the amplifier to provide good decoupling for lower frequency signals and to in a gain of two or greater. supply current for fast, large signal changes at the AD8397 outputs. 7 LAYOUT CONSIDERATIONS 6 As with all high speed applications, pay careful attention to 5 INPUT printed circuit board (PCB) layout to prevent associated board 4 parasitics from becoming problematic. The PCB should have a OUTPUT low impedance return path (or ground) to the supply. Removing 3 the ground plane from all layers in the immediate area of the 2 amplifier helps to reduce stray capacitances. The signal routing should be short and direct in order to minimize the parasitic 1 inductance and capacitance associated with these traces. Locate 0 termination resistors and loads as close as possible to their respective inputs and outputs. Keep input traces as far apart as –1 0 80 160 240 320 400 480 560 640 720 800 possible from the output traces to minimize coupling (crosstalk) TIME (ns) though the board. Figure 22. Unity-Gain Input Overdrive Recovery Rev. A | Page 11 of 16 VOLTS 05069-028 AD8397 CAPACITIVE LOAD DRIVE 5 When driving capacitive loads, many high speed operational 390pF 470pF amplifiers exhibit peaking in their frequency response. In a 0 gain-of-two circuit, Figure 23 shows that the AD8397 can drive –5 270pF 330pF capacitive loads up to 270 pF with only 3 dB of peaking. For –10 amplifiers with more limited capacitive load drive, a small series –15 resistor (R ) is generally used between the amplifier output and S the capacitive load in order to minimize peaking and ensure –20 device stability. Figure 24 shows that the use of a 2.2 Ω series –25 resistor can further extend the capacitive load drive of the AD8397 –30 out to 470 pF, while keeping the frequency response peaking to within 3 dB. –35 5 –40 220pF 270pF 0.01 0.1 1 10 100 0 FREQUENCY (MHz) Figure 24. Capacitive Load Peaking with 2.2 Ω Series Resistor –5 150pF –10 100pF –15 –20 –25 –30 –35 –40 0.01 0.1 1 10 100 FREQUENCY (MHz) Figure 23. Capacitive Load Peaking Without Series Resistor Rev. A | Page 12 of 16 GAIN (dB) 05069-021 GAIN (dB) 05069-030 AD8397 OUTLINE DIMENSIONS 5.00 (0.1968) 4.80 (0.1890) 85 6.20 (0.2441) 4.00 (0.1574) 1 5.80 (0.2284) 3.80 (0.1497) 4 1.27 (0.0500) 0.50 (0.0196) 45° BSC 1.75 (0.0688) 0.25 (0.0099) 1.35 (0.0532) 0.25 (0.0098) 8° 0.10 (0.0040) 0° COPLANARITY 0.51 (0.0201) 1.27 (0.0500) 0.10 0.31 (0.0122) 0.25 (0.0098) SEATING 0.40 (0.0157) 0.17 (0.0067) PLANE COMPLIANT TO JEDEC STANDARDS MS-012-AA CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. Figure 25. 8-Lead Standard Small Outline Package [SOIC_N] Narrow Body (R-8) Dimensions shown in millimeters and (inches) FOR PROPER CONNECTION OF 5.00 (0.197) THE EXPOSED PAD, REFER TO 4.90 (0.193) 3.098 (0.122) THE PIN CONFIGURATION AND 4.80 (0.189) FUNCTION DESCRIPTIONS 4.00 (0.157) SECTION OF THIS DATA SHEET. 3.90 (0.154) 3.80 (0.150) 85 2.41 (0.095) 6.20 (0.244) TOP VIEW 6.00 (0.236) 1 4 5.80 (0.228) BOTTOM VIEW 1.27 (0.05) (PINS UP) BSC 0.50 (0.020) 1.65 (0.065) 45° 1.75 (0.069) 0.25 (0.010) 1.25 (0.049) 1.35 (0.053) 1.27 (0.050) 0.10 (0.004) SEATING 8° MAX PLANE 0.40 (0.016) 0° 0.25 (0.0098) 0.51 (0.020) COPLANARITY 0.17 (0.0067) 0.31 (0.012) 0.10 COMPLIANT TO JEDEC STANDARDS MS-012-AA CONTROLLING DIMENSIONS ARE IN MILLIMETER; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. Figure 26. 8-Lead Standard Small Outline Package with Exposed Pad [SOIC_N_EP] Narrow Body (RD-8-2) Dimensions shown in millimeters and (inches) ORDERING GUIDE 1 Model Temperature Package Package Description Package Outline AD8397ARZ −40°C to +85°C 8-Lead SOIC_N R-8 AD8397ARZ-REEL −40°C to +85°C 8-Lead SOIC_N R-8 AD8397ARZ-REEL7 −40°C to +85°C 8-Lead SOIC_N R-8 AD8397ARDZ −40°C to +85°C 8-Lead SOIC_N_EP RD-8-2 AD8397ARDZ-REEL −40°C to +85°C 8-Lead SOIC_N_EP RD-8-2 AD8397ARDZ-REEL7 −40°C to +85°C 8-Lead SOIC_N_EP RD-8-2 1 Z = RoHS Compliant Part. Rev. A | Page 13 of 16 012407-A 07-28-2008-A AD8397 NOTES Rev. A | Page 14 of 16 AD8397 NOTES Rev. A | Page 15 of 16 AD8397 NOTES ©2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D05069-0-5/11(A) Rev. A | Page 16 of 16