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Dual Ultralow Distortion, Ultralow Noise Op Amp AD8599
FEATURES
Low noise: 1 nV/Hz at 1kHz Low distortion: -105 dB THD @ 20 kHz <80 nV p-p input noise, 0.1 Hz to 10 Hz Slew rate: 16 V/s Wide bandwidth: 10 MHz Supply current: 4.7 mA/amp typical Low offset voltage: 10 V typical CMRR: 120 dB Unity-gain stable 15 V operation
FUNCTIONAL BLOCK DIAGRAM
OUT A 1 -IN A 2 +IN A 3
8
+V OUT B +IN B
06274-054
AD8599
7 6 5
TOP VIEW -V 4 (Not to Scale)
-IN B
Figure 1. 8-Lead SOIC (R-8)
APPLICATIONS
Professional audio preamplifiers ATE/precision testers Imaging systems Medical/physiological measurements Precision detectors/instruments Precision data conversion
GENERAL DESCRIPTION
The AD8599 is a dual, very low noise, low distortion operational amplifier ideal for use as a preamplifier. The low noise of 1 nV/Hz and low harmonic distortion of -105 dB (or better) at audio bandwidths give the AD8599 the wide dynamic range necessary for preamps in audio, medical, and instrumentation applications. The AD8599's excellent slew rate of 16 V/s and 10 MHz gain bandwidth make it highly suitable for medical applications. The low distortion and settling time of the AD8599 make it ideal for buffering of high resolution data converters. The AD8599 is available in an 8-Lead SOIC package and is specified over the -40C to +125C temperature range.
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: 781.461.3113 (c)2007 Analog Devices, Inc. All rights reserved.
AD8599 TABLE OF CONTENTS
Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 4 Thermal Resistance .......................................................................4 Power Sequencing .........................................................................4 ESD Caution...................................................................................4 Typical Performance Characteristics ..............................................5 Outline Dimensions ....................................................................... 14 Ordering Guide .......................................................................... 14
REVISION HISTORY
2/07--Revision 0: Initial Version
Rev. 0 | Page 2 of 16
AD8599 SPECIFICATIONS
VS = 15 V, VCM = 0 V, VO = 0 V, TA = +25C, unless otherwise specified. Table 1.
Parameter INPUT CHARACTERISTICS Offset Voltage Offset Voltage Drift Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection Ratio Large Signal Voltage Gain Input Capacitance OUTPUT CHARACTERISTICS Output Voltage High Symbol VOS VOS/T IB IOS IVR CMRR AVO CDIFF CCM VOH RL = 600 -40C TA +125C RL = 2 k -40C TA +125C RL = 600 -40C TA +125C RL = 2 k -40C TA +125C At 1 MHz, AV = +1 VDD = 18 V to 4.5 V -40C TA +125C -40C TA +125C DYNAMIC PERFORMANCE Slew Rate Settling Time Gain Bandwidth Product Phase Margin NOISE PERFORMANCE Peak-to-Peak Noise Voltage Noise Density Current Noise Total Harmonic Distortion + Noise Channel Separation SR ts GBP M en p-p en AV = -1, RL = 2 k AV = 1, RL = 2 k To 0.01%, step = 10 V 16.8 15 2 10 68 76 1.07 1.5 -108 -105 -120 120 118 13.1 12.8 13.5 13.2 Conditions -40C TA +125C -40C TA +125C -40C TA +125C -40C TA +125C VDD = 15 V -12.5 V VCM +12.5 V -40C TA 125C RL 600 , VO = -11 V to +11 V -40C TA +125C -12.5 120 115 110 106 0.8 25 25 2.2 180 300 180 220 +12.5 V/C nA nA nA nA V dB dB dB dB pf pf V V V V V V V V mA dB dB mA mA V/s V/s s MHz Degrees nV nV/Hz nV/Hz pA/Hz dB dB dB Min Typ 10 Max 120 180 Unit V V
140 116 4.8 4.5 13.4 13.7 -13.2 -13.5 52 5 140 4.7 5.7 6.75 -12.9 -12.8 -13.4 -13.3
Output Voltage Low
VOL
Output Source Circuit Closed-Loop Output Impedance POWER SUPPLY Power Supply Rejection Ratio Supply Current per Amplifier
ISC ZOUT PSRR ISY
THD + N CS
0.1 Hz to 10 Hz f = 1 kHz f = 10 Hz f = 1 kHz G = 1, RL 1 k, f = 1 kHz, VRMS = 3 V, 15 V G = 1, RL 1 k, f = 20 kHz, VRMS = 3 V, 15 V f = 10 kHz
1.15 1.5
Rev. 0 | Page 3 of 16
AD8599 ABSOLUTE MAXIMUM RATINGS
Table 2.
Parameter Supply Voltage Input Voltage Differential Input Voltage Output Short-Circuit to GND Storage Temperature Range Operating Temperature Range Lead Temperature Range (Soldering 60 sec) Junction Temperature Rating 18 V GND to VDD 1 V Indefinite -65C to +150C -40C to +125C 300C 150C
THERMAL RESISTANCE
JA is specified for the worst-case conditions, that is, a device soldered in a circuit board for surface-mount packages. Table 3. Thermal Resistance
Package Type 8-Lead SOIC (R-8) JA 120 JC 36 Unit C/W
POWER SEQUENCING
The op amp supplies must be established simultaneously with, or before, any input signals are applied. If this is not possible, the input current must be limited to 10 mA.
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.
ESD CAUTION
Rev. 0 | Page 4 of 16
AD8599 TYPICAL PERFORMANCE CHARACTERISTICS
70 60
NUMBER OF AMPLIFIERS
60
MEAN = 8.23 STDEV = 24.47 MIN = -72.62 MAX = 62.09
NUMBER OF AMPLIFIERS
50
MEAN = 0.346 STDEV = 0.218 MIN = 0.010 MAX = 1.155
50 40 30 20 10 0 -75 -65 -55 -45 -35 -25 -15 -5 5 15 25 35 45 55 65 75 VOS (V)
06274-001
40
30
20
10
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 TCVOS (V)
2.2 2.4
Figure 2. Input Offset Voltage Distribution VS = 5 V
70 60
NUMBER OF AMPLIFIERS
Figure 5. TCVOS Distribution VS = 5 V, -40C TA +125C
60 MEAN = 0.342 STDEV = 0.221 MIN = 0.013 MAX = 1.239
MEAN = 7.91 STDEV = 21.89 MIN = -63.02 MAX = 57.5
NUMBER OF AMPLIFIERS
50
50 40 30 20 10 0 -75 -65 -55 -45 -35 -25 -15 -5 5 15 25 35 45 55 65 75 VOS (V)
06274-002
40
30
20
10
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 TCVOS (V)
2.2 2.4
Figure 3. Input Offset Voltage Distribution VS = 15 V
60 50
Figure 6. TCVOS Distribution VS = 15 V , -40C TA +85C
60 MEAN = 0.461 STDEV = 0.245 MIN = 0.026 MAX = 1.26
50
VS = 15V
NUMBER OF AMPLIFIERS
40 30
40
VOS (V)
20 10 0
30
20
-10
06274-003
10
-25
0
25 50 75 TEMPERATURE (C)
100
125
150
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 TCVOS (V)
2.2 2.4
Figure 4. Input Offset Voltage vs. Temperature
Figure 7. TCVOS Distribution VS = 5 V, -40C TA +85C
Rev. 0 | Page 5 of 16
06274-006
-20 -50
0
06274-005
0
06274-004
0
AD8599
45 40 35 30 25 20 15 10 5
06274-007
100 MEAN = 0.765 STDEV = 0.234 MIN = 0.338 MAX = 1.709 75 50 25
VOS (V)
NUMBER OF AMPLIFIERS
0 -25 -50 -75
06274-010
06274-012
0
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 TCVOS (V)
2.2 2.4
-100 -15
-10
-5
0 VCM (V)
5
10
15
Figure 8. TCVOS Distribution, VS = 15 V, -40C TA +125C
0
350 300
Figure 11. Offset Voltage vs. VCM, VS = 15 V
-5
250 200
-10
150
VOS (V)
-15 VS = 15V -20 VS = 5V
IB (nA)
06274-008
100 50 0 -50
-25
-100 -150
0
1
2 3 TIME (Minute)
4
5
-25
0
25 50 TEMPERATURE (C)
75
100
125
Figure 9. Offset Voltage vs. Time
100 75 50 25
VOS (V)
Figure 12. Input Bias Current vs. Temperature VS = 5 V, VCM = 0 V
350 300 250 200 150
0 -25 -50 -75
06274-009
IB (nA)
100 50 0 -50
-100 -150
-100 -5.0
-2.5
0 VCM (V)
2.5
5.0
-200 -50
-25
0
25 50 TEMPERATURE (C)
75
100
125
Figure 10. Offset Voltage vs. VCM, VS = 5 V
Figure 13. Input Bias Current vs. Temperature VS = 15 V, VCM = 0 V
Rev. 0 | Page 6 of 16
06274-011
-30
-200 -50
AD8599
80 70 118 60 50 40 IOS @ VS = 5V 30 20 IOS @ VS = 15V 10
06274-013
120
RL = 2k, VO = 11V
AVO (dB)
116 RL = 600, VO = 11V 114
IOS (nA)
112
-25
0
25 50 TEMPERATURE (C)
75
100
125
-25
0
75 25 50 TEMPERATURE (C)
100
125
150
Figure 14. Input Offset Current vs. Temperature
350 300 250 200 100
IB (nA)
Figure 17. Large Signal Voltage Gain vs. Temperature, VS = 15 V
80
TA = -40C
60 40 20 0 -20 -40 -60
06274-014
ISINK
50 0 -50 -100 -150 -200 -250 -300 -350 -12 -10 -8 -6 -4
TA = +25C TA = +85C
TA = +125C
OUTPUT CURRENT (mA)
150
ISOURCE
-2
0 2 VCM (V)
4
6
8
10
12
-25
0
25 50 75 TEMPERATURE (C)
100
125
150
Figure 15. Input Bias Current vs. VCM, VS = 15 V
114 112 110
80 60 40 20 0 -20 -40 -60
06274-015
Figure 18. Output Current vs. Temperature, VS = 5 V
ISINK
RL = 2k, VO = 2V
AVO (dB)
108 106 104 102 100 -50 RL = 600, VO = 2V
OUTPUT CURRENT (mA)
ISOURCE
-25
0
75 25 50 TEMPERATURE (C)
100
125
150
-25
0
25 50 75 TEMPERATURE (C)
100
125
150
Figure 16. Large Signal Voltage Gain vs. Temperature VS = 5 V
Figure 19. Output Current vs. Temperature, VS = 15 V
Rev. 0 | Page 7 of 16
06274-018
-80 -50
06274-017
-80 -50
06274-016
0 -50
110 -50
AD8599
14 12 10 ISY = +25C
ISY (mA)
10000
OUTPUT SATURATION VOLTAGE (mV)
ISY = +125C
ISY = +85C
8 ISY = -40C 6 4 2 0
ISINK 1000 ISOURCE
0
4
8
12
16
20 24 VSY (V)
28
32
36
40
0.01
0.1 IL (mA)
1
10
100
Figure 20. Supply Current vs. Supply Voltage
15.0
Figure 23. Output Saturation Voltage vs. Current Load, VS = 15 V
10000
12.5
OUTPUT SATURATION VOLTAGE (mV)
ISY (mA)
10.0
ISY 15V ISY 5V
1000
VDD - VOH
7.5
06274-020
-25
0
25 50 TEMPERATURE (C)
75
100
125
1000
10000 OUTPUT LOAD ()
100000
1000000
Figure 21. Supply Current vs. Temperature
10000
OUTPUT SATURATION VOLTAGE (mV)
10000
Figure 24. Output Saturation Voltage vs. RL, VS = 5 V
ISINK 1000 ISOURCE
OUTPUT SATURATION VOLTAGE (mV)
VEE - VOL 1000
06274-021
0.01
0.1 IL (mA)
1
10
100
1000
10000 OUTPUT LOAD ()
100000
1000000
Figure 22. Output Saturation Voltage vs. Current Load, VS = 5 V
Figure 25. Output Saturation Voltage vs. RL, VS = 5 V
Rev. 0 | Page 8 of 16
06274-024
100 0.001
100 100
06274-023
5.0 -50
100 100
06274-022
06274-019
100 0.001
AD8599
10000
0
OUTPUT SATURATION VOLTAGE (mV)
-0.5
VEE - VOL (V)
VDD - VOH 1000
-1.0 VEE - VOL @ RL = 2k -1.5
VEE - VOL @ RL = 600
-2.0
06274-025
1000
10000 OUTPUT LOAD ()
100000
1000000
-25
0
25 50 75 TEMPERATURE (C)
100
125
150
Figure 26. Output Saturation Voltage vs. RL, VS = 15 V
10000
Figure 29. Output Saturation Voltage vs. Temperature, VS = 5 V
2.5
OUTPUT SATURATION VOLTAGE (mV)
2.0 VCC - VOH @ RL = 600 VEE - VOL 1000
VCC - VOH (V)
1.5 VCC - VOH @ RL = 2k 1.0
0.5
06274-026
1000
10000 OUTPUT LOAD ()
100000
1000000
-25
0
25 50 75 TEMPERATURE (C)
100
125
150
Figure 27. Output Saturation Voltage vs. RL, VS = 15 V
2.5
Figure 30. Output Saturation Voltage vs. Temperature, VS = 15 V
0
2.0
-0.5
VCC - VOH (V)
1.5
VEE - VOL (V)
VCC - VOH @ RL = 600
-1.0 VEE - VOL @ RL = 2k -1.5
1.0
VCC - VOH @ RL = 2k
0.5
-2.0
VEE - VOL @ RL = 600
06274-027
-25
0
75 25 50 TEMPERATURE (C)
100
125
150
-25
0
75 25 50 TEMPERATURE (C)
100
125
150
Figure 28. Output Saturation Voltage vs. Temperature, VS = 5 V
Figure 31. Output Saturation Voltage vs. Temperature, VS = 15 V
Rev. 0 | Page 9 of 16
06274-030
0 -50
-2.5 -50
06274-029
100 100
0 -50
06274-028
100 100
-2.5 -50
AD8599
15.0 14.8 14.6
80 80 60 40 GAIN (dB) 20 0 20 0 -20
06274-034 06274-036 06274-035
120 100 PHASE (Degrees)
120 100
14.4
GAIN (dB)
14.2
VOH (V)
60 40
14.0 13.8 13.6 13.4 13.2
06274-031
VOH @ RL = 2k
VOH @ RL = 600
-20 -40 1k
13.0 -50
0
50 TEMPERATURE (C)
100
150
10k
100k 1M FREQUENCY (Hz)
10M
-40 100M
Figure 32. Output Voltage High vs. Temperature, VS = 15 V
-13.0 VOL @ RL = 600
Figure 35. Gain and Phase vs. Frequency, 5 V VS 15 V
50 40 30
CLOSED-LOOP GAIN (dB)
GAIN = 100
-13.5 VOL @ RL = 2k
VOL (V)
GAIN = 10 20 10 0 -10 -20 -30 -40 GAIN = 1
-14.0
-14.5
0
50 TEMPERATURE (C)
100
150
06274-032
-15.0 -50
-50 1k
10k
100k 1M FREQUENCY (Hz)
10M
100M
Figure 33. Output Voltage Low vs. Temperature, VS = 15 V
30 VS = 15V
Figure 36. Closed-Loop Gain vs. Frequency, 5 V VS 15 V
70 60 GAIN = 100 50
MAXIMUM OUTPUT SWING (V p-p)
25
20
ZOUT ()
40 30 20 10 0 1k GAIN = 10
15
10
VS = 5V
GAIN = 1
5
06274-033
0
1
10
100 FREQUENCY (kHz)
1000
10000
10k
100k 1M FREQUENCY (Hz)
10M
100M
Figure 34. Maximum Output Swing vs. Frequency
Figure 37. Closed-Loop Output Impedance vs. Frequency, 5 V VS 15 V
Rev. 0 | Page 10 of 16
PHASE (Degrees)
AD8599
140 120 100
CMRR (dB)
600
CMRR -V S = 5V (dB) CMRR -V S = 15V (dB)
500
NUMBER OF AMPLIFIERS
MEAN = 1.07 STDEV = 0.02 MIN = 1.05 MAX = 1.15
400
80 60 40 20 0 10
300
200
100
06274-037
100
1k
10k 100k FREQUENCY (Hz)
1M
10M
100M
0.95
0.98
1.01
1.04
1.07
1.10
1.13
1.16
1.19
VOLTAGE NOISE DENSITY (nV/ Hz)
Figure 38. Common-Mode Rejection Ratio vs. Frequency
120 100 80 PSRR+ (dB) PSRR- (dB)
Figure 41. Voltage Noise Density @ 1 kHz, 5 V VS 15 V
100
VOLTAGE NOISE DENSITY (nV/ Hz)
10
PSRR (dB)
60 40 20 0 -20 100
1
06274-038
1k
10k 100k FREQUENCY (Hz)
1M
10M
1
10
100 FREQUENCY (Hz)
1000
Figure 39. Power Supply Rejection Ratio vs. Frequency, 5 V VS 15 V
90 80 70 60 50 40 30 20 10
06274-039
Figure 42. Voltage Noise Density vs. Frequency, 5 V VS 15 V
100
CURRTENT NOISE DENSITY (pA/ Hz)
NUMBER OF AMPLIFIERS
MEAN = 1.30 STDEV = 0.09 MIN = 1.1 MAX = 1.5
10
1
1.0
1.1
1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 VOLTAGE NOISE DENSITY (nV/ Hz)
2.0
1
10
100 FREQUENCY (Hz)
1000
Figure 40. Voltage Noise Density @ 10 Hz, 5 V VS 15 V
Figure 43. Current Noise Density vs. Frequency, 5 V VS 15 V
Rev. 0 | Page 11 of 16
06274-042
0
0.1
06274-041
0.1
06274-040
0
AD8599
0.1 20 15 10
AMPLITUDE (V)
0.01
THD + N (%)
5 0 -5 -10
0.001
RL = 600
RL = 2k 0.0001 10
-15
06274-043
VS = +15V VIN = 20V p-p AV = 1 RF = 1k RL = 2k VERTICAL AXIS = 5V/DIV HORIZONTAL AXIS = 4s/DIV
06274-047 06274-049 06274-048
100
1000 FREQUENCY (Hz)
10000
100000
-20 -8.6
-4.6
-0.6
3.4
7.4
11.4 15.4 TIME (s)
19.4
23.4
27.4
31.4
Figure 44. Total Harmonic Distortion + Noise vs. Frequency, VS = 15 V, VIN = 3 V rms
0.1 VIN = 3V rms VIN = 5V rms VIN = 7V rms 0.01 20 15 10
Figure 47. Large Signal Response
AMPLITUDE (V)
THD + N (%)
5 0 -5 -10 -15
VS = 15V VIN = 20V p-p AV = -1 RF = 2k RS = 2k CL = 0pF VERTICAL AXIS = 5V/DIV HORIZONTAL AXIS = 4s/DIV
0.001
100
1000 FREQUENCY (Hz)
10000
100000
06274-044
0.0001 10
-20 -8.6
-4.6
-0.6
3.4
7.4
11.4 15.4 TIME (s)
19.4
23.4
27.4
31.4
Figure 45. Total Harmonic Distortion + Noise vs. Frequency
80 60 40 45 40 35
Figure 48. Large Signal Response
AMPLITUDE (mV)
20 0 -20 -40 -60 -80 -800 -400 VS = +15V, +5V VIN = 100mV p-p AV = 1 EXTERNAL CL = 100pF EXTERNAL RL = 10k VERTICAL AXIS = 20mV/DIV HORIZONTAL AXIS = 400ns/DIV 0 400 800 1200 1600 2000 2400 2800 3200 TIME (ns)
06274-046
OVERSHOOT (%)
30 25 20 15 10 5 0 10 100 CAPACITANCE (pF) 1000
Figure 46. Small Signal Response
Figure 49. Overshoot vs. Capacitance, 5 V VS 15 V, AV = 1, RL = 10 k
Rev. 0 | Page 12 of 16
AD8599
0 -20 VIN = 10V p-p VIN = 20V p-p 800 600 400
CHANNEL SEPARATION (dB)
-40
AMPLITUDE (mV)
06274-050
-60 -80 -100 -120 -140 -160 100
200 0 -200 -400 -600
06274-053
1000
10000 FREQUENCY (Hz)
100000
1000000
-800
0
1
2
3
4 5 6 TIME (Seconds)
7
8
9
10
Figure 50. Channel Separation vs. Frequency, VS = 15 V, AV = 100, RL = 1 k
Figure 51.Peak-to-Peak Noise, VS 15 V, AV = 1 M, RL = 10 k
Rev. 0 | Page 13 of 16
AD8599 OUTLINE DIMENSIONS
5.00 (0.1968) 4.80 (0.1890) 4.00 (0.1574) 3.80 (0.1497)
8 1 5 4
6.20 (0.2440) 5.80 (0.2284)
1.27 (0.0500) BSC 0.25 (0.0098) 0.10 (0.0040) COPLANARITY 0.10 SEATING PLANE
1.75 (0.0688) 1.35 (0.0532)
0.50 (0.0196) 0.25 (0.0099) 8 0 0.25 (0.0098) 0.17 (0.0067) 1.27 (0.0500) 0.40 (0.0157)
45
0.51 (0.0201) 0.31 (0.0122)
COMPLIANT TO JEDEC STANDARDS MS-012-A A 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 52. 8-Lead Standard Small Outline Package [SOIC_N] Narrow Body (R-8) Dimensions shown in millimeters and (inches)
ORDERING GUIDE
Model AD8599ARZ 1 AD8599ARZ-REEL1 AD8599ARZ-REEL71
1
Temperature Range -40C to +125C -40C to +125C -40C to +125C
Package Description 8-Lead Standard Small Outline Package [SOIC_N] 8-Lead Standard Small Outline Package [SOIC_N] 8-Lead Standard Small Outline Package [SOIC_N]
060506-A
Package Option R-8 R-8 R-8
Z = Pb-free part.
Rev. 0 | Page 14 of 16
AD8599 NOTES
Rev. 0 | Page 15 of 16
AD8599 NOTES
(c)2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06274-0-2/07(0)
Rev. 0 | Page 16 of 16

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