Data Sheet
FEATURES
Low noise: 1.1 nV/√Hz at 1 kHz
Low distortion: −120 dB THD at 1 kHz
Input noise, 0.1 Hz to 10 Hz: <76 nV p-p
Slew rate: 14 V/μs
Wide bandwidth: 10 MHz
Supply current: 4.8 mA/amp typical
Low offset voltage: 10 μV typical
CMRR: 120 dB
Unity-gain stable
±15 V operation
Single and Dual, Ultralow
Distortion, Ultralow Noise Op Amps
AD8597/AD8599
PIN CONFIGURATIONS
NC
1
–IN
2
+IN
3
8
NC
V+
OUT
06274-060
AD8597
7
6
5
TOP VIEW
V–
4
(Not to Scale)
NC
NC = NO CONNECT
Figure 1.
AD8597
8-Lead SOIC (R-8)
NC 1
–IN 2
+IN 3
V– 4
TOP VIEW
(Not to Scale)
8 NC
AD8597
7 V+
6 OUT
5 NC
APPLICATIONS
Professional audio preamplifiers
ATE/precision testers
Imaging systems
Medical/physiological measurements
Precision detectors/instruments
Precision data conversion
Figure 2.
AD8597
8-Lead LFCSP (CP-8-13)
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 3.
AD8599
8-Lead SOIC (R-8)
GENERAL DESCRIPTION
The
AD8597/AD8599
are very low noise, low distortion opera-
tional amplifiers ideal for use as preamplifiers. The low noise of
1.1 nV/√Hz and low harmonic distortion of −120 dB (or better)
at audio bandwidths give the
AD8597/AD8599
the wide dynamic
range necessary for preamplifiers in audio, medical, and instru-
mentation applications. The excellent slew rate of 14 V/μs and
10 MHz gain bandwidth make them highly suitable for medical
applications. The low distortion and fast settling time make
them ideal for buffering of high resolution data converters.
The
AD8597
is available in 8-lead SOIC and LFCSP packages,
while the
AD8599
is available in an 8-lead SOIC package. They
are both specified over a −40°C to +125°C temperature range.
The
AD8597
and
AD8599
are members of a growing series of
low noise op amps offered by Analog Devices, Inc. (see Table 1).
Table 1. Low Noise Op Amps
Package
Single
Dual
Quad
0.9 nV
AD797
1.1 nV
AD8597
AD8599
1.8 nV
ADA4004-1
ADA4004-2
ADA4004-4
2.8 nV
AD8675
AD8676
3.8 nV
AD8671
AD8672
AD8674
Rev. F
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Information furnished by Analog Devices is believed to be accurate and reliable. However, no
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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.
06274-061
NOTES
1. NC = NO CONNECT.
2. IT IS RECOMMENDED THAT THE
EXPOSED PAD BE CONNECTED
TO V–.
AD8597/AD8599
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Pin Configurations ........................................................................... 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings ............................................................ 5
Thermal Resistance ...................................................................... 5
Power Sequencing ........................................................................ 5
Data Sheet
ESD Caution...................................................................................5
Typical Performance Characteristics ..............................................6
Functional Operation..................................................................... 15
Input Voltage Range ................................................................... 15
Output Phase Reversal ............................................................... 15
Noise and Source Impedance Considerations ........................... 15
Outline Dimensions ....................................................................... 17
Ordering Guide .......................................................................... 17
REVISION HISTORY
9/2017—Rev. E to Rev. F
Changed CP-8-2 to CP-8-13 ........................................ Throughout
Updated Outline Dimensions ....................................................... 17
Changes to Ordering Guide .......................................................... 17
10/2013—Rev. D to Rev. E
Change to Figure 15 Caption .......................................................... 7
Changes to Figure 23 and Figure 26............................................... 9
Changes to Figure 30 and Figure 33............................................. 10
Changes to Figure 46 through Figure 50 ..................................... 13
Changes to Figure 53 and Figure 54............................................. 14
2/2013—Rev. C to Rev. D
Changes to Figure 44 ...................................................................... 12
Changes to Figure 46 and Figure 49............................................. 13
12/2009—Rev. B to Rev. C
Changes to Table 1 ............................................................................ 1
10/2008—Rev. A to Rev. B
Added AD8597 ................................................................... Universal
Added LFCSP_VD ............................................................. Universal
Added Table 1.................................................................................... 1
Changes to Specifications Section ...................................................3
Changes to Absolute Maximum Ratings Section ..........................5
Changes to Typical Performance Characteristics Section ...........6
Added Figure 12 and Figure 15 .......................................................7
Added Figure 18 and Figure 19 .......................................................8
Added Figure 30 and Figure 33 .................................................... 10
Added Figure 34 to Figure 38 ....................................................... 11
Added Figure 42 and Figure 45 .................................................... 12
Added Figure 52, Figure 55, Figure 57 ........................................ 14
Added Functional Operation Section .......................................... 15
Added Figure 58 ............................................................................. 15
Updated Outline Dimensions ....................................................... 17
Changes to Ordering Guide .......................................................... 17
4/2007—Rev. 0 to Rev. A
Updated Layout .................................................................................5
Changes to Figure 45 Caption ...................................................... 12
Added Figure 48 ............................................................................. 12
Changes to Figure 51 Caption ...................................................... 13
2/2007—Revision 0: Initial Version
Rev. F | Page 2 of 20
Data Sheet
SPECIFICATIONS
V
SY
= ±5 V, V
CM
= 0 V, V
O
= 0 V, T
A
= 25°C, unless otherwise specified.
Table 2.
Parameter
INPUT CHARACTERISTICS
Offset Voltage
Symbol
V
OS
−40°C ≤ T
A
≤ +125°C
Offset Voltage Drift
Input Bias Current
Input Offset Current
Input Voltage Range
Common-Mode Rejection Ratio
Large Signal Voltage Gain
Input Capacitance
Differential Capacitance
Common-Mode Capacitance
OUTPUT CHARACTERISTICS
Output Voltage High
ΔV
OS
/ΔT
I
B
I
OS
−40°C ≤ T
A
≤ +125°C
IVR
CMRR
A
VO
−2.0 V ≤ V
CM
≤ +2.0 V
−40°C ≤ T
A
≤ +125°C
R
L
≥ 600 Ω, V
O
= −11 V to +11 V
−40°C ≤ T
A
≤ +125°C
−2.0
120
105
105
100
−40°C ≤ T
A
≤ +125°C
−40°C ≤ T
A
≤ +125°C
65
Conditions
Min
AD8597/AD8599
Typ
15
Max
120
180
2.2
210
340
250
340
+2.0
Unit
μV
μV
μV/°C
nA
nA
nA
nA
V
dB
dB
dB
dB
pF
pF
V
V
V
V
V
V
V
V
mA
Ω
dB
dB
mA
mA
V/μs
V/μs
μs
MHz
Degrees
nV p-p
nV/√Hz
nV/√Hz
pA/√Hz
pA/√Hz
pA/√Hz
pA/√Hz
dB
dB
0.8
40
135
110
C
DIFF
C
CM
V
OH
R
L
= 600 Ω
−40°C ≤ T
A
≤ +125°C
R
L
= 2 kΩ
−40°C ≤ T
A
≤ +125°C
R
L
= 600 Ω
−40°C ≤ T
A
≤ +125°C
R
L
= 2 kΩ
−40°C ≤ T
A
≤ +125°C
At 1 MHz, A
V
= 1
V
SY
= ±18 V to ±4.5 V
−40°C ≤ T
A
≤ +125°C
−40°C ≤ T
A
≤ +125°C
120
118
3.5
3.3
3.7
3.5
15.4
5.5
3.7
3.8
−3.6
−3.7
±52
5
140
4.8
5.5
6.5
−3.4
−3.3
−3.5
−3.4
Output Voltage Low
V
OL
Output Short-Circuit Current
Closed-Loop Output Impedance
POWER SUPPLY
Power Supply Rejection Ratio
Supply Current per Amplifier
DYNAMIC PERFORMANCE
Slew Rate
Settling Time
Gain Bandwidth Product
Phase Margin
NOISE PERFORMANCE
Peak-to-Peak Noise
Voltage Noise Density
Correlated Current Noise
Uncorrelated Current Noise
Total Harmonic Distortion + Noise
Channel Separation
I
SC
Z
OUT
PSRR
I
SY
SR
t
S
GBP
Φ
M
e
n
p-p
e
n
A
V
= −1, R
L
= 2 kΩ
A
V
= 1, R
L
= 2 kΩ
To 0.01%, step = 10 V
14
14
2
10
60
76
1.07
2.0
4.2
2.4
5.2
−120
−120
THD + N
CS
0.1 Hz to 10 Hz
f = 1 kHz
f = 10 Hz
f = 1 kHz
f = 10 Hz
f = 1 kHz
f = 10 Hz
G = 1, R
L
≥ 1 kΩ, f = 1 kHz, V
RMS
= 1 V
f = 10 kHz
Rev. F | Page 3 of 20
1.15
1.5
AD8597/AD8599
V
S
= ±15 V, V
CM
= 0 V, V
O
= 0 V, T
A
= +25°C, unless otherwise specified.
Table 3.
Parameter
INPUT CHARACTERISTICS
Offset Voltage
Symbol
V
OS
−40°C ≤ T
A
≤ +125°C
Offset Voltage Drift
Input Bias Current
Input Offset Current
Input Voltage Range
Common-Mode Rejection Ratio
Large Signal Voltage Gain
Input Capacitance
Differential Capacitance
Common-Mode Capacitance
OUTPUT CHARACTERISTICS
Output Voltage High
ΔV
OS
/ΔT
I
B
−40°C ≤ T
A
≤ +125°C
I
OS
−40°C ≤ T
A
≤ +125°C
IVR
CMRR
A
VO
−12.5 V ≤ V
CM
≤ +12.5 V
−40°C ≤ T
A
≤ +125°C
R
L
≥ 600 Ω, V
O
= −11 V to +11 V
−40°C ≤ T
A
≤ +125°C
−12.5
120
115
110
106
135
116
50
−40°C ≤ T
A
≤ +125°C
0.8
25
Conditions
Min
Typ
10
Data Sheet
Max
120
180
2.2
200
300
200
300
+12.5
Unit
μV
μV
μV/°C
nA
nA
nA
nA
V
dB
dB
dB
dB
pF
pF
V
V
V
V
V
V
V
V
mA
Ω
dB
dB
mA
mA
V/μs
V/μs
μs
MHz
Degrees
nV p-p
C
DIFF
C
CM
V
OH
R
L
= 600 Ω
−40°C ≤ T
A
≤ +125°C
R
L
= 2 kΩ
−40°C ≤ T
A
≤ +125°C
R
L
= 600 Ω
−40°C ≤ T
A
≤ +125°C
R
L
= 2 kΩ
−40°C ≤ T
A
≤ +125°C
At 1 MHz, A
V
= 1
V
SY
= ±18 V to ±4.5 V
−40°C ≤ T
A
≤ +125°C
−40°C ≤ T
A
≤ +125°C
120
118
13.1
12.8
13.5
13.2
12.1
5.1
13.4
13.7
−13.2
−13.5
±52
5
140
5.0
5.7
6.75
−12.9
−12.8
−13.4
−13.3
Output Voltage Low
V
OL
Output Short-Circuit Current
Closed-Loop Output Impedance
POWER SUPPLY
Power Supply Rejection Ratio
Supply Current per Amplifier
DYNAMIC PERFORMANCE
Slew Rate
Settling Time
Gain Bandwidth Product
Phase Margin
NOISE PERFORMANCE
Peak-to-Peak Noise
Voltage Noise Density
Correlated Current Noise
Uncorrelated Current Noise
Total Harmonic Distortion + Noise
Channel Separation
I
SC
Z
OUT
PSRR
I
SY
SR
t
s
GBP
Φ
M
e
n
p-p
e
n
A
V
= −1, R
L
= 2 kΩ
A
V
= 1, R
L
= 2 kΩ
To 0.01%, step = 10 V
16
15
2
10
65
76
1.07
1.9
4.3
2.3
5.3
−120
−120
THD + N
CS
0.1 Hz to 10 Hz
f = 1 kHz
f = 10 Hz
f = 1 kHz
f = 10 Hz
f = 1 kHz
f = 10 Hz
G = 1, R
L
≥ 1 kΩ, f = 1 kHz, V
RMS
= 3 V
f = 10 kHz
Rev. F | Page 4 of 20
1.15
1.5
nV/√Hz
nV/√Hz
pA/√Hz
pA/√Hz
pA/√Hz
pA/√Hz
dB
dB
Data Sheet
ABSOLUTE MAXIMUM RATINGS
Table 4.
Parameter
Supply Voltage
Input Voltage
Differential Input Voltage
1
Output Short-Circuit to GND
Storage Temperature Range
Operating Temperature Range
Lead Temperature Range (Soldering 60 sec)
Junction Temperature
1
AD8597/AD8599
THERMAL RESISTANCE
Rating
±18 V
−V ≤ V
IN
≤ +V
±1 V
Indefinite
−65°C to +150°C
−40°C to +125°C
300°C
150°C
θ
JA
is specified with the device soldered on a circuit board with
its exposed paddle soldered to a pad (if applicable) on a 4-layer
JEDEC standard PCB with zero air flow.
Table 5.
Package Type
8-Lead LFCSP (CP-8-13)
8-Lead SOIC (R-8) (AD8597)
8-Lead SOIC (R-8) (AD8599)
θ
JA
78
140
120
θ
JC
20
39
36
Unit
°C/W
°C/W
°C/W
If the differential input voltage exceeds 1 V, limit the current to 5 mA.
POWER SEQUENCING
Apply the op amp supplies simultaneously. The op amp supplies
must be stable before any input signals are applied. In any case,
the input current must be limited to 5 mA.
Stresses at or above those listed under Absolute Maximum
Ratings may cause permanent damage to the product. This is a
stress rating only; functional operation of the product at these
or any other conditions above those indicated in the operational
section of this specification is not implied. Operation beyond
the maximum operating conditions for extended periods may
affect product reliability.
ESD CAUTION
Rev. F | Page 5 of 20
