Document
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
GENERAL DESCRIPTION
The AD8597/AD8599 are very low noise, low distortion operational 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 instrumentation 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.
PIN CONFIGURATIONS
NC 1
8 NC
–IN 2 AD8597 7 V+
+IN 3 TOP VIEW 6 OUT V– 4 (Not to Scale) 5 NC
06274-060
NC = NO CONNECT
Figure 1. AD8597 8-Lead SOIC (R-8)
NC 1 –IN 2 +IN 3 V– 4
AD8597
TOP VIEW (Not to Scale)
8 NC 7 V+ 6 OUT 5 NC
06274-061
NOTES 1. NC = NO CONNECT. 2. IT IS RECOMMENDED THAT THE
EXPOSED PAD BE CONNECTED TO V–.
Figure 2. AD8597 8-Lead LFCSP (CP-8-13)
OUT A 1 –IN A 2
AD8599
8 +V 7 OUT B
+IN A 3 TOP VIEW 6 –IN B –V 4 (Not to Scale) 5 +IN B
06274-054
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. F
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AD8597/AD8599
TABLE OF CONTENTS
Features .............................................................................................. 1 Applications...................................................