Data Sheet
FEATURES
Very low voltage noise 2.8 nV/√Hz @ 1 kHz
Rail-to-rail output swing
Low input bias current: 2 nA maximum
Very low offset voltage: 12 μV typical
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
Ultraprecision, 36 V, 2.8 nV/√Hz
Dual Rail-to-Rail Output Op Amp
AD8676
PIN CONFIGURATIONS
OUT A
–IN A
+IN A
V–
1
2
3
4
8
V+
OUT B
06487-001
AD8676
7
6
–IN B
TOP VIEW
(Not to Scale)
5
+IN B
Figure 1. 8-Lead SOIC_N (R-8)
OUT A
–IN A
+IN A
V–
1
2
3
4
8
V+
OUT B
+IN B
06487-002
AD8676
TOP VIEW
(Not to Scale)
7
6
5
APPLICATIONS
Precision instrumentation
PLL filters
Laser diode control loops
Strain gage amplifiers
Medical instrumentation
Thermocouple amplifiers
–IN B
Figure 2. 8-Lead MSOP (RM-8)
GENERAL DESCRIPTION
The AD8676 precision operational amplifier offers ultralow
offset, drift, and voltage noise combined with very low input
bias currents over the full operating temperature range. The
AD8676 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 AD8676 features a rail-to-rail output like that of the OP184,
but with wide bandwidth and even lower voltage noise, com-
bined 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 AD8676 has very low input bias
current and low input current noise.
With typical offset voltage of only 12 μV, offset drift of 0.2 μV/°C,
and noise of only 0.10 μV p-p (0.1 Hz to 10 Hz), the AD8676 is
perfectly suited for applications where large error sources
cannot be tolerated. 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 AD8676 to maxi-
mize SNR and dynamic range.
The smaller packages and low power consumption afforded by
the AD8676 allow maximum channel density or minimum
board size for space-critical equipment.
The AD8676 is specified for the extended industrial temperature
range (−40°C to +125°C). The AD8676 is available in the 8-lead
MSOP, and the popular 8-lead, narrow SOIC; both of which are
lead-free packages. MSOP packaged devices are only available
in tape and reel format.
For the single version of this ultraprecision, rail-to-rail op amp,
see the
AD8675
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
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.
C
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 ©
2006–2011
Analog Devices, Inc. All rights reserved.
AD8676
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Pin Configurations ........................................................................... 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Electrical Specifications ............................................................... 3
Data Sheet
Absolute Maximum Ratings ............................................................5
Thermal Resistance .......................................................................5
Power Sequencing .........................................................................5
ESD Caution...................................................................................5
Typical Performance Characteristics ..............................................6
Outline Dimensions ....................................................................... 11
Ordering Guide .......................................................................... 11
REVISION HISTORY
8/11—Rev. B to Rev. C
Change to Y-Axis Label, Figure 9 ................................................... 7
11/09—Rev. A to Rev. B
Changes to General Description Section ...................................... 1
Added Table 1; Renumbered Sequentially .................................... 1
Updated Outline Dimensions ....................................................... 11
Changes to Ordering Guide .......................................................... 11
4/08—Rev. 0 to Rev. A
Changes to Table 1.............................................................................3
Changes to Table 2.............................................................................4
Changes to Figure 6, Figure 7, Figure 8 ..........................................6
Changes to Figure 9 through Figure 12 ..........................................7
Changes to Figure 21, Figure 22, and Figure 25 ............................9
Added Figure 26, Renumbered Sequentially .................................9
Changes to Figure 27...................................................................... 10
Added Figure 28, Renumbered Sequentially .............................. 10
10/06—Revision 0: Initial Version
Rev. C | Page 2 of 12
Data Sheet
ABSOLUTE MAXIMUM RATINGS
Table 4.
Parameter
Supply Voltage
Input Voltage
Differential Input Voltage
Output Short-Circuit Duration to GND
Storage Temperature Range
RM, R Packages
Operating Temperature Range
Junction Temperature Range
RM, R Packages
Lead Temperature Range (Soldering, 10 sec)
Rating
±18 V
±V supply
±0.7 V
Indefinite
−65°C to +150°C
−40°C to +125°C
−65°C to +150°C
300°C
AD8676
THERMAL RESISTANCE
Table 5. Thermal Resistance
Package Type
8-Lead MSOP (RM)
8-Lead SOIC_N (R)
θ
JA
210
158
θ
JC
45
43
Unit
°C/W
°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. C | Page 5 of 12
stm32/stm8
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