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AD8675ARZ Folha de dados(PDF) 1 Page - Analog Devices

Nome de Peças AD8675ARZ
Descrição Electrónicos  36 V Precision, 2.8 nV/?숰z Rail-to-Rail Output Op Amp
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Fabricante Electrônico  AD [Analog Devices]
Página de início  http://www.analog.com
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36 V Precision, 2.8 nV/√Hz
Rail-to-Rail Output Op Amp
Data Sheet
AD8675
Rev. E
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.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
www.analog.com
Fax: 781.461.3113
©2005–2012 Analog Devices, Inc. All rights reserved.
FEATURES
Very low voltage noise: 2.8 nV/√Hz
Rail-to-rail output swing
Low input bias current: 2 nA maximum
Very low offset voltage: 75 µV maximum
Low input offset drift: 0.6 µV/°C maximum
Very high gain: 120 dB
Wide bandwidth: 10 MHz typical
±5 V to ±18 V operation
APPLICATIONS
Precision instrumentation
PLL filters
Laser diode control loops
Strain gage amplifiers
Medical instrumentation
Thermocouple amplifiers
PIN CONFIGURATIONS
NULL
1
–IN
2
+IN
3
V–
4
NULL
8
V+
7
OUT
6
NC
5
NC = NO CONNECT
AD8675
TOP VIEW
(Not to Scale)
Figure 1. 8-Lead SOIC_N (R-8)
NULL
1
–IN
2
+IN
3
V–
4
NULL
8
V+
7
OUT
6
NC
5
NC = NO CONNECT
AD8675
TOP VIEW
(Not to Scale)
Figure 2. 8-Lead MSOP (RM-8)
GENERAL DESCRIPTION
The AD8675 precision operational amplifier has ultralow offset,
drift, and voltage noise combined with very low input bias currents
over the full operating temperature range. The AD8675 is a
precision, wide bandwidth op amp featuring rail-to-rail output
swings and very low noise. Operation is fully specified from
±5 V to ±15 V.
The AD8675 features a rail-to-rail output like that of the OP184,
but with wide bandwidth and even lower voltage noise, combined
with the precision and low power consumption like that of the
industry-standard OP07 amplifier. Unlike other low noise, rail-
to-rail op amps, the AD8675 has very low input bias current
and low input current noise.
With typical offset voltage of only 10 µV, offset drift of 0.2 µV/°C,
and noise of only 0.10 μV p-p (0.1 Hz to 10 Hz), the AD8675 is
perfectly suited for applications where large error sources cannot
be tolerated. For applications with even lower offset tolerances,
the proprietary nulling capability allows a combination of both
device and system offset errors up to 3.5 mV (referred to the
input) to be compensated externally. Unlike previous circuits,
the AD8675 accommodates this adjustment without adversely
affecting the offset drift, CMRR, and PSRR of the amplifier.
Precision instrumentation, PLL, and other precision filter circuits,
position and pressure sensors, medical instrumentation, and
strain gage amplifiers benefit greatly from the very low noise,
low input bias current, and wide bandwidth. Many systems can
take advantage of the low noise, dc precision, and rail-to-rail
output swing provided by the AD8675 to maximize SNR and
dynamic range.
The smaller packages and low power consumption afforded by
the AD8675 allow maximum channel density or minimum
board size for space-critical equipment.
The AD8675 is specified for the extended industrial temperature
range (−40°C to +125°C). The AD8675 amplifier is available in
the tiny 8-lead MSOP, and the popular 8-lead, narrow SOIC,
RoHS compliant packages. MSOP packaged devices are only
available in tape and reel format.
For the dual version of this ultraprecision, rail-to-rail op amp,
see the AD8676 data sheet.
The AD8675 and AD8676 are members of a growing series of
low noise op amps offered by Analog Devices, Inc.
Table 1. Voltage Noise
Package
0.9 nV
1.1 nV
1.8 nV
2.8 nV
3.8 nV
Single
AD797
AD8597
ADA4004-1
AD8675
AD8671
Dual
AD8599
ADA4004-2
AD8676
AD8672
Quad
ADA4004-4
AD8674


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