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Rail-to-Rail, High Output Current Amplifier AD8397
FEATURES
Dual operational amplifier Voltage feedback Wide supply range: from 3 V to 24 V Rail-to-rail output Output swing to within 0.5 V of supply rails High linear output current 310 mA peak into 32 on 12 V supplies while maintaining -80 dBc SFDR Low noise 4.5 nV/Hz voltage noise density @ 100 kHz 1.5 pA/Hz current noise density @ 100 kHz High speed 69 MHz bandwidth (G = 1, -3 dB) 53 V/s slew rate (RLOAD = 25 )
PIN CONFIGURATION
OUT1 1 -IN1 2 +IN1 3 -VS 4
8 7 6 5
+VS OUT2
05069-001
-IN2 +IN2
Figure 1. 8-Lead SOIC
1.50 1.25 1.00 0.75 0.50
VOUT (V)
0.25 0
-0.25 -0.50 -0.75 -1.00 -1.25 -1.50 0 2 4 6 8 10 12 TIME (s) 14 16 18 20
05069-031
APPLICATIONS
Twisted-pair line drivers Audio applications General-purpose high current amplifiers
GENERAL DESCRIPTION
The AD8397 has two voltage feedback operational amplifiers capable of driving heavy loads with excellent linearity. The common-emitter, rail-to-rail output stage surpasses the output voltage capability of typical emitter-follower output stages and can swing to within 0.5 V of either rail while driving a 25 load. The low distortion, high output current, and wide output dynamic range make the AD8397 ideal for applications that require a large signal swing into a heavy load. Fabricated with ADI's high speed eXtra Fast Complementary Bipolar High Voltage (XFCB-HV) process, the high bandwidth and fast slew rate of the AD8397 keep distortion to a minimum while also dissipating minimum power. The AD8397 is available in a standard 8-lead SOIC package and, for higher power applications, a thermally enhanced 8-lead SOIC EPAD package. Both packages can operate from -40C to +85C.
Figure 2. Output Swing, VS = 1.5 V, RL = 25
12 9 6 3
VOUT (V)
0 -3 -6
05069-032
-9 -12 0 2 4 6 8 10 12 TIME (s) 14 16 18 20
Figure 3. Output Swing, VS = 12 V, RL = 100
Rev. 0
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 rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.326.8703 (c) 2005 Analog Devices, Inc. All rights reserved.
AD8397 TABLE OF CONTENTS
Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 7 Maximum Power Dissipation ..................................................... 7 ESD Caution.................................................................................. 7 Typical Performance Characteristics ............................................. 8 General Description ....................................................................... 11 Power Supply and Decoupling ................................................. 11 Layout Considerations............................................................... 11 Unity-Gain Output Swing ......................................................... 11 Capacitive Load Drive ............................................................... 12 Outline Dimensions ....................................................................... 13 Ordering Guide .......................................................................... 13
REVISION HISTORY
1/05--Revision 0: Initial Version
Rev. 0 | Page 2 of 16
AD8397 SPECIFICATIONS
VS = 1.5 V or +3 V (@ TA = 25C, G = +1, RL = 25 , unless otherwise noted). Table 1.
Parameter DYNAMIC PERFORMANCE -3 dB Bandwidth 0.1 dB Flatness Large Signal Bandwidth Slew Rate NOISE/DISTORTION PERFORMANCE Distortion (Worst Harmonic) Input Voltage Noise Input Current Noise DC PERFORMANCE Input Offset Voltage Input Offset Voltage Match Input Bias Current TMIN - TMAX Input Offset Current Open-Loop Gain INPUT CHARACTERISTICS Input Resistance Input Capacitance Common-Mode Rejection OUTPUT CHARACTERISTICS Output Resistance +Swing -Swing +Swing -Swing Maximum Output Current POWER SUPPLY Operating Range (Dual Supply) Supply Current Power Supply Rejection VOUT = 0.5 V f = 100 kHz VCM = 1 V -71 81 Test Conditions/Comments VOUT = 0.1 V p-p VOUT = 0.1 V p-p VOUT = 2.0 V p-p VOUT = 0.8 V p-p fC = 100 kHz, VOUT = 1.4 V p-p, G = +2 f = 100 kHz f = 100 kHz Min Typ 50 3.6 9 32 -90 4.5 1.5 1.0 2.5 1.0 200 1.3 50 88 87 1.4 -80 0.2 +1.43 -1.4 +1.48 -1.47 170 2.5 2.0 900 300 Max Unit MHz MHz MHz V/s dBc nV/Hz pA/Hz mV mV mV nA A nA dB k pF dB VP VP VP VP mA V mA/Amp dB
TMIN - TMAX
RLOAD = 25 RLOAD = 25 RLOAD = 100 RLOAD = 100 SFDR -70 dBc, f = 100 kHz, VOUT = 0.7 VP, RLOAD = 4.1
+1.39 +1.45
-1.37 -1.44
VS = 0.5 V
1.5 6 -70
7 -82
12.0 8.5
Rev. 0 | Page 3 of 16
AD8397
VS = 2.5V or +5 V (@ TA = 25C, G = +1, RL = 25 , unless otherwise noted). Table 2.
Parameter DYNAMIC PERFORMANCE -3 dB Bandwidth 0.1 dB Flatness Large Signal Bandwidth Slew Rate NOISE/DISTORTION PERFORMANCE Distortion (Worst Harmonic) Input Voltage Noise Input Current Noise DC PERFORMANCE Input Offset Voltage Input Offset Voltage Match Input Bias Current TMIN - TMAX Input Offset Current Open-Loop Gain INPUT CHARACTERISTICS Input Resistance Input Capacitance Common-Mode Rejection OUTPUT CHARACTERISTICS Output Resistance +Swing -Swing +Swing -Swing Maximum Output Current POWER SUPPLY Operating Range (Dual Supply) Supply Current Power Supply Rejection VOUT = 1.0 V f = 100 kHz VCM = 1 V -76 85 Test Conditions/Comments VOUT = 0.1 V p-p VOUT = 0.1 V p-p VOUT = 2.0 V p-p VOUT = 2.0 V p-p fC = 100 kHz, VOUT = 2 V p-p, G = +2 f = 100 kHz f = 100 kHz Min Typ 60 4.8 14 53 -98 4.5 1.5 1.0 2.5 1.0 200 1.3 50 90 87 1.4 -80 0.2 +2.42 -2.37 +2.48 -2.46 230 2.4 2.0 900 300 Max Unit MHz MHz MHz V/s dBc nV/Hz pA/Hz mV mV mV nA A nA dB k pF dB VP VP VP VP mA V mA/Amp dB
TMIN - TMAX
RLOAD = 25 RLOAD = 25 RLOAD = 100 RLOAD = 100 SFDR -70 dBc, f = 100 kHz, VOUT = 1.0 VP, RLOAD = 4.3
+2.37 +2.45
-2.32 -2.42
VS = 0.5 V
1.5 7 -75
9 -85
12.6 12
Rev. 0 | Page 4 of 16
AD8397
VS = 5 V or +10 V (@ TA = 25C, G = +1, RL = 25 , unless otherwise noted). Table 3.
Parameter DYNAMIC PERFORMANCE -3 dB Bandwidth 0.1 dB Flatness Large Signal Bandwidth Slew Rate NOISE/DISTORTION PERFORMANCE Distortion (Worst Harmonic) Input Voltage Noise Input Current Noise DC PERFORMANCE Input Offset Voltage Input Offset Voltage Match Input Bias Current TMIN - TMAX Input Offset Current Open-Loop Gain INPUT CHARACTERISTICS Input Resistance Input Capacitance Common-Mode Rejection OUTPUT CHARACTERISTICS Output Resistance +Swing -Swing +Swing -Swing Maximum Output Current POWER SUPPLY Operating Range (Dual Supply) Supply Current Power Supply Rejection VOUT = 2.0 V f = 100 kHz VCM = 1 V -84 85 Test Conditions/Comments VOUT = 0.1 V p-p VOUT = 0.1 V p-p VOUT = 2.0 V p-p VOUT = 4.0 V p-p fC = 100 kHz, VOUT = 6 V p-p, G = +2 f = 100 kHz f = 100 kHz Min Typ 66 6.5 14 53 -94 4.5 1.5 1.0 2.5 1.0 200 1.3 50 94 87 1.4 -94 0.2 +4.82 -4.74 +4.96 -4.92 250 2.5 2.0 900 300 Max Unit MHz MHz MHz V/s dBc nV/Hz pA/Hz mV mV mV nA A nA dB k pF dB VP VP VP VP mA V mA/Amp dB
TMIN - TMAX
RLOAD = 25 RLOAD = 25 RLOAD = 100 RLOAD = 100 SFDR -80 dBc, f = 100 kHz, VOUT = 3 VP, RLOAD = 12
+4.7 +4.92
-4.65 -4.88
VS = 0.5 V
1.5 7 -76
9 -85
12.6 12
Rev. 0 | Page 5 of 16
AD8397
VS = 12 V or +24 V (@ TA = 25C, G = +1, RL = 25 , unless otherwise noted). Table 4.
Parameter DYNAMIC PERFORMANCE -3 dB Bandwidth 0.1 dB Flatness Large Signal Bandwidth Slew Rate NOISE/DISTORTION PERFORMANCE Distortion (Worst Harmonic) Input Voltage Noise Input Current Noise DC PERFORMANCE Input Offset Voltage Input Offset Voltage Match Input Bias Current TMIN - TMAX Input Offset Current Open-Loop Gain INPUT CHARACTERISTICS Input Resistance Input Capacitance Common-Mode Rejection OUTPUT CHARACTERISTICS Output Resistance +Swing -Swing Maximum Output Current POWER SUPPLY Operating Range (Dual Supply) Supply Current Power Supply Rejection VOUT = 3.0 V f = 100 kHz VCM = 1 V -85 90 Test Conditions/Comments VOUT = 0.1 V p-p VOUT = 0.1 V p-p VOUT = 2.0 V p-p VOUT = 4.0 V p-p fC = 100 kHz, VOUT = 20 V p-p, G = +5 f = 100 kHz f = 100 kHz Min Typ 69 7.6 14 53 -84 4.5 1.5 1.0 2.5 1.0 200 1.3 50 96 87 1.4 -96 0.2 +11.89 -11.83 310 3.0 2.0 900 300 Max Unit MHz MHz MHz V/s dBc nV/Hz pA/Hz mV mV mV nA A nA dB k pF dB VP VP mA V mA/Amp dB
TMIN - TMAX
RLOAD = 100 RLOAD = 100 SFDR -80 dBc, f = 100 kHz, VOUT = 10 VP, RLOAD = 32
+11.82
-11.77
VS = 0.5 V
1.5 8.5 -76
11 -86
12.6 15
Rev. 0 | Page 6 of 16
AD8397 ABSOLUTE MAXIMUM RATINGS
MAXIMUM POWER DISSIPATION
Table 5.
Parameter Supply Voltage Power Dissipation1 Storage Temperature Operating Temperature Range Lead Temperature Range (Soldering 10 sec) Junction Temperature Rating 26.4 V See Figure 4 -65C to +125C -40C to +85C 300C 150C
MAXIMUM POWER DISSIPATION (W)
The maximum power that can be dissipated safely by the AD8397 is limited by the associated rise in junction temperature. The maximum safe junction temperature for plastic encapsulated devices is determined by the glass transition temperature of the plastic, approximately 150C. Temporarily exceeding this limit may cause a shift in parametric performance due to a change in the stresses exerted on the die by the package.
4.5 TJ = 150C 4.0 3.5 8-LEAD SOIC EPAD 3.0 2.5 2.0 1.5 8-LEAD SOIC 1.0 0.5 0 -40 -30 -20 -10 0 10 20 30 40 50 60 AMBIENT TEMPERATURE (C)
05069-020
Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
1
Thermal resistance for standard JEDEC 4-layer board: 8-lead SOIC: JA = 157.6C/W 8-Lead SOIC EPAD: JA = 47.2C/W
70
80
90
Figure 4. Maximum Power Dissipation vs. Temperature
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although this product features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality.
Rev. 0 | Page 7 of 16
AD8397 TYPICAL PERFORMANCE CHARACTERISTICS
100 VOUT 80 60 40 -10 -20 VIN
CMRR (dB)
0
-30 OUT 1 -40 OUT 2 -50 -60 -70
05069-029
OUTPUT (mV)
20 0 -20 -40 -60 -80 -100 0 20 40
-80 -90 0.01
60
80
100 120 TIME (ns)
140
160
180
200
0.1
1 FREQUENCY (MHz)
10
100
Figure 5. Small Signal Pulse Response (G = +1, VS = 5 V, RL = 25 )
Figure 8. Common-Mode Rejection vs. Frequency (VS = 5 V, RL = 25 )
0 -10
5
4 VIN 3 VOUT
CROSSTALK (dB)
-20 -30 -40 -50 OUT 1 -60 -70 -80 OUT 2
OUTPUT (V)
2
1
0
05069-022
-90 -100 -110 0.01 0.1 1 FREQUENCY (MHz) 10
05069-006
-1 0 0.2 0.4 0.6 0.8 1.0 1.2 TIME (s) 1.4 1.6 1.8 2.0
100
Figure 6. Large Signal Pulse Response (0 V to 4 V, VS = 5 V, RL = 25 )
Figure 9. Output-to-Output Crosstalk vs. Frequency (VS = 5 V, VO = 1 V p-p, RL = 25 )
0.3
3.0 VIN 2.5 2.0 1.5
INPUT (V)
6 VOUT 5
0.2
4
0.1
OUTPUT (V)
3 2 1 0
1.0 0.5 0 -0.5 -1.0 0 40 80 120 160 200 240 TIME (ns) 280 320 360
GAIN (dB)
0 VO = 100mV p-p -0.1
-0.2
05069-004
05069-007
-1 -2 400
-0.3 0.1
1 FREQUENCY (MHz)
10
Figure 7. Output Overdrive Recovery (VS = 5 V, Gain = +2, RL = 25 )
Figure 10. 0.1 dB Flatness (VS = 5 V, VO = 0.1 V p-p, Gain = +1, RL = 25 )
Rev. 0 | Page 8 of 16
05069-005
AD8397
10 G = +1 0
NORMALIZED GAIN (dB)
10
0 G = +2 NORMALIZED GAIN (dB) G = +1 G = +2 -10
-10
G = +10 -20
-20 G = +10
-30
05069-008
-30
05069-011
-40 0.01
0.1
1 10 FREQUENCY (MHz)
100
-40 0.01
0.1
1 10 FREQUENCY (MHz)
100
Figure 11. Small Signal Frequency Response for Various Gains (VS = 5 V, VO = 0.1 V p-p, RL = 25 )
10 12V
Figure 14. Large Signal Frequency Response for Various Gains (VS = 5 V, VO = 2 V p-p, RL = 25 )
20
0 5V
10
0
GAIN (dB)
GAIN (dB)
-10
-10 12V -20
-20
2.5V -30
05069-009
-30 2.5V 5V -40 0.01 0.1 1 10 FREQUENCY (MHz) 100
05069-012
-40 0.01
0.1
1 10 FREQUENCY (MHz)
100
Figure 12. Small Signal Frequency Response for Various Supplies (Gain = +1, VO = 0.1 V p-p, RL = 25 )
100 80 PHASE 135 90
Figure 15. Large Signal Frequency Response for Various Supplies (Gain = +1, VO = 2 V p-p, RL = 25 )
0 -10 -20
OPEN-LOOP GAIN (dB)
60 40 GAIN 20 0 -20 -40 0.001
45
PHASE (Degrees)
-30
0 -45 -90 -135 -180 1000
PSRR (dB)
-40 +PSRR -50 -PSRR -60
05069-010
0.01
0.1 1 10 FREQUENCY (MHz)
100
-80 0.01
0.1
1 FREQUENCY (MHz)
10
100
Figure 13. Open Loop Gain and Phase vs. Frequency (VS = 5 V, RL = 25 )
Figure 16. Power Supply Rejection (VS = 5 V, RL = 25 )
Rev. 0 | Page 9 of 16
05069-013
-70
AD8397
0 -10 -50 -20 -30 -60 -40
DISTORTION (dBc)
DISTORTION (dBc)
-40 -50 -60 -70 -80 -90 -100
05069-023
-70 -80 -90 -100
05069-026
SECOND HARMONIC THIRD HARMONIC 0.1 1 FREQUENCY (MHz) 10
SECOND HARMONIC THIRD HARMONIC
-110 -120 0 1 2
-110 -120 0.01
3 4 5 6 7 OUTPUT VOLTAGE (V p-p)
8
9
10
Figure 17. Distortion vs. Frequency (VS = 5 V, VO = 2 V p-p, G = +2, RL = 25 )
-40 -50 -60 -40 -50 -60
Figure 20. Distortion vs. Output Voltage @ 100 kHz, (VS = 5 V, G = +2, RL = 25 )
DISTORTION (dBc)
-70 -80 SECOND HARMONIC -90 -100
05069-024
DISTORTION (dBc)
-70 -80 -90 -100 SECOND HARMONIC
-120 0
-120 0 2 4 6 8 10 12 14 16 18 OUTPUT VOLTAGE (V p-p) 20 22 24
0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 OUTPUT VOLTAGE (V p-p)
Figure 18. Distortion vs. Output Voltage @ 100 kHz, (VS = 1.5 V, G = +2, RL = 25 )
-40 -50 -60
Figure 21. Distortion vs. Output Voltage @ 100 kHz, (VS = 12 V, G = +5, RL = 50 )
DISTORTION (dBc)
-70 -80 -90 -100
05069-025
SECOND HARMONIC
-110 THIRD HARMONIC -120 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 OUTPUT VOLTAGE (V p-p) 4.0 4.5 5.0
Figure 19. Distortion vs. Output Voltage @ 100 kHz, (VS = 2.5 V, G = +2, RL = 25 )
Rev. 0 | Page 10 of 16
05069-027
-110
THIRD HARMONIC
-110
THIRD HARMONIC
AD8397 GENERAL DESCRIPTION
The AD8397 is a voltage feedback operational amplifier which features an H-bridge input stage and common-emitter, rail-torail output stage. The AD8397 can operate from a wide supply range, 1.5 V to 12 V. When driving light loads, the rail-to-rail output is capable of swinging to within 0.2 V of either rail. The output can also deliver high linear output current when driving heavy loads, up to 310 mA into 32 while maintaining -80 dBc SFDR. The AD8397 is fabricated on Analog Devices' proprietary eXtra Fast Complementary Bipolar High Voltage process (XFCB-HV). When the AD8397 is configured as a differential driver, as in some line driving applications, a symmetrical layout should be provided to the extent possible in order to maximize balanced performance. When running differential signals over a long distance, the traces on the PCB should be close together or any differential wiring should be twisted together to minimize the area of the inductive loop that is formed. This reduces the radiated energy and makes the circuit less susceptible to RF interference. Adherence to stripline design techniques for long signal traces (greater than approximately 1 inch) is recommended.
POWER SUPPLY AND DECOUPLING
The AD8397 can be powered with a good quality, wellregulated, low noise supply from 1.5 V to 12 V. Careful attention should be paid to decoupling the power supply. High quality capacitors with low equivalent series resistance (ESR), such as multilayer ceramic capacitors (MLCCs), should be used to minimize the supply voltage ripple and power dissipation. A 0.1 F MLCC decoupling capacitor(s) should be located no more than 1/8 inch away from the power supply pin(s). A large tantalum 10 F to 47 F capacitor is recommended to provide good decoupling for lower frequency signals and to supply current for fast, large signal changes at the AD8397 outputs.
UNITY-GAIN OUTPUT SWING
When operating the AD8397 in a unity-gain configuration, the output does not swing to the rails and is constrained by the H-bridge input. This can be seen by comparing the output overdrive recovery in Figure 7 and the input overdrive recovery in Figure 22. To avoid overdriving the input and to realize the full swing afforded by the rail-to-rail output stage, the amplifier should be used in a gain of two or greater.
7 6 5 4 INPUT
LAYOUT CONSIDERATIONS
As with all high speed applications, careful attention should be paid to printed circuit board (PCB) layout in order to prevent associated board parasitics from becoming problematic. The PCB should have a low impedance return path (or ground) to the supply. Removing the ground plane from all layers in the immediate area of the amplifier helps to reduce stray capacitances. The signal routing should be short and direct in order to minimize the parasitic inductance and capacitance associated with these traces. Termination resistors and loads should be located as close as possible to their respective inputs and outputs. Input traces should be kept as far apart as possible from the output traces to minimize coupling (crosstalk) though the board.
VOLTS
OUTPUT 3 2 1
05069-028
0 -1 0 80 160 240 320 400 480 560 640 720 800 TIME (ns)
Figure 22. Unity-Gain Input Overdrive Recovery
Rev. 0 | Page 11 of 16
AD8397
CAPACITIVE LOAD DRIVE
When driving capacitive loads, many high speed operational amplifiers exhibit peaking in their frequency response. In a gain-of-two circuit, Figure 23 shows that the AD8397 can drive capacitive loads up to 270 pF with only 3 dB of peaking. For amplifiers with more limited capacitive load drive, a small series resistor (RS) is generally used between the amplifier output and the capacitive load in order to minimize peaking and ensure device stability. Figure 24 shows that the use of a 2.2 series resistor can further extend the capacitive load drive of the AD8397 out to 470 pF, while keeping the frequency response peaking to within 3 dB.
5 0 -5 150pF -10 100pF 220pF 270pF 5 0 -5 -10 270pF 330pF 390pF 470pF
GAIN (dB)
-15 -20 -25 -30 -35 -40 0.01
05069-030
0.1
1 10 FREQUENCY (MHz)
100
Figure 24. Capacitive Load Peaking with 2.2 Series Resistor
GAIN (dB)
-15 -20 -25 -30 -35 -40 0.01
05069-021
0.1
1 10 FREQUENCY (MHz)
100
Figure 23. Capacitive Load Peaking Without Series Resistor
Rev. 0 | Page 12 of 16
AD8397 OUTLINE DIMENSIONS
5.00 (0.1968) 4.80 (0.1890)
8 5 4
4.00 (0.1574) 3.80 (0.1497) 1
6.20 (0.2440) 5.80 (0.2284)
1.27 (0.0500) BSC 0.25 (0.0098) 0.10 (0.0040)
1.75 (0.0688) 1.35 (0.0532)
0.50 (0.0196) x 45 0.25 (0.0099)
0.51 (0.0201) COPLANARITY SEATING 0.31 (0.0122) 0.10 PLANE
8 0.25 (0.0098) 0 1.27 (0.0500) 0.40 (0.0157) 0.17 (0.0067)
COMPLIANT TO JEDEC STANDARDS MS-012AA 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] Narrow Body (R-8) Dimensions shown in millimeters and (inches)
5.00 (0.197) 4.90 (0.193) 4.80 (0.189)
8 1 5 4
4.00 (0.157) 3.90 (0.154) 3.80 (0.150)
3.098 (0.122) 6.20 (0.244) 6.00 (0.236) 5.80 (0.228) BOTTOM VIEW 2.41 (0.095)
TOP VIEW
1.27 (0.05) BSC 1.75 (0.069) 1.35 (0.053) 0.25 (0.0098) 0.10 (0.0039) COPLANARITY SEATING 0.10 PLANE 0.51 (0.020) 0.31 (0.012)
(PINS UP)
0.50 (0.020) x 45 0.25 (0.010)
8 0.25 (0.0098) 0 1.27 (0.050) 0.40 (0.016) 0.17 (0.0068)
COMPLIANT TO JEDEC STANDARDS MS-012-AA CONTROLLING DIMENSIONS ARE IN MILLIMETER; INCHES 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
Model AD8397ARZ1 AD8397ARZ-REEL1 AD8397ARZ-REEL71 AD8397ARDZ1 AD8397ARDZ-REEL1 AD8397ARDZ-REEL71 Temperature Package -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C Package Description 8-Lead SOIC 8-Lead SOIC 8-Lead SOIC 8-Lead SOIC-EPAD 8-Lead SOIC-EPAD 8-Lead SOIC-EPAD Package Outline R-8 R-8 R-8 RD-8-2 RD-8-2 RD-8-2
1
Z = Pb-free part.
Rev. 0 | Page 13 of 16
AD8397
Rev. 0 | Page 14 of 16
AD8397 NOTES
Rev. 0 | Page 15 of 16
AD8397 NOTES
(c) 2005 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D05069-0-1/05(0)
Rev. 0 | Page 16 of 16

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