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PDF AD8597 Data sheet ( Hoja de datos )
| Número de pieza | AD8597 | |
| Descripción | Ultralow Noise Op Amp | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Data Sheet
Single and Dual, Ultralow
Distortion, Ultralow Noise Op Amps
AD8597/AD8599
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
APPLICATIONS
Professional audio preamplifiers
ATE/precision testers
Imaging systems
Medical/physiological measurements
Precision detectors/instruments
Precision data conversion
PIN CONFIGURATIONS
NC 1
8 NC
–IN 2 AD8597 7 V+
+IN 3 TOP VIEW 6 OUT
V– 4 (Not to Scale) 5 NC
NC = NO CONNECT
Figure 1. AD8597 8-Lead SOIC (R-8)
NC 1
–IN 2
+IN 3
V– 4
PIN 1
INDICATOR
AD8597
TOP VIEW
8 NC
7 V+
6 OUT
5 NC
NOTES
1. NC = NO CONNECT.
2. IT IS RECOMMENDED THAT THE
EXPOSED PAD BE CONNECTED
TO V–.
Figure 2. AD8597 8-Lead LFCSP (CP-8-2)
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.
OUT A 1
8 +V
–IN A 2 AD8599 7 OUT B
+IN A 3 TOP VIEW 6 –IN B
–V 4 (Not to Scale) 5 +IN B
Figure 3. AD8599 8-Lead SOIC (R-8)
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 0.9 nV 1.1 nV 1.8 nV
Single AD797 AD8597 ADA4004-1
Dual AD8599 ADA4004-2
Quad
ADA4004-4
2.8 nV
AD8675
AD8676
3.8 nV
AD8671
AD8672
AD8674
Rev. E
Document Feedback
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2007–2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 page  
Data Sheet
ABSOLUTE MAXIMUM RATINGS
Table 4.
Parameter
Supply Voltage
Input Voltage
Differential Input Voltage1
Output Short-Circuit to GND
Storage Temperature Range
Operating Temperature Range
Lead Temperature Range (Soldering 60 sec)
Junction Temperature
Rating
±18 V
−V ≤ VIN ≤ +V
±1 V
Indefinite
−65°C to +150°C
−40°C to +125°C
300°C
150°C
1 If the differential input voltage exceeds 1 V, limit the current to 5 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.
AD8597/AD8599
THERMAL RESISTANCE
θJA 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_VD (CP-8-2)
8-Lead SOIC (R-8) (AD8597)
8-Lead SOIC (R-8) (AD8599)
θJA
78
140
120
θJC Unit
20 °C/W
39 °C/W
36 °C/W
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.
ESD CAUTION
Rev. E | Page 5 of 20
5 Page 
Data Sheet
50
40
AV = 100
30
20
AV = 10
10
0
AV = 1
–10
–20
AD8597
–30 VSY = ±5V
RL = 2kΩ
–40
1 10
100 1k
FREQUENCY (kHz)
10k
Figure 34. Closed-Loop Gain vs. Frequency
50k
100
AV = –100
10
AV = –10
1
AV = +1
0.1
0.01
10
AD8597
VSY = ±5V
100 1k 10k
FREQUENCY (kHz)
100k
Figure 35. Closed-Loop Output Impedance vs. Frequency
110
100
90
80
70
60 AD8597
VSY = ±5V, ±15V
50
40
30
20
1 10 100 1k 10k
FREQUENCY (kHz)
Figure 36. Common-Mode Rejection Ratio vs. Frequency
AD8597/AD8599
50
40
AV = 100
30
20
AV = 10
10
0
AV = 1
–10
–20
AD8597
–30 VSY = ±15V
RL = 2kΩ
–40
1 10
100 1k
FREQUENCY (kHz)
10k
Figure 37. Closed-Loop Gain vs. Frequency
50k
100
AV = –100
10
AV = –10
1
AV = +1
0.1
0.01
10
AD8597
VSY = ±15V
100 1k 10k
FREQUENCY (kHz)
100k
Figure 38. Closed-Loop Output Impedance vs. Frequency
120
AD8599
±5V ≤ VSY ≤ ±15V
100
PSRR+ (dB)
PSRR– (dB)
80
60
40
20
0
–20
100
1k 10k 100k 1M
FREQUENCY (Hz)
10M
Figure 39. Power Supply Rejection Ratio vs. Frequency
Rev. E | Page 11 of 20
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet AD8597.PDF ] | |
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