AD8676 Analog Devices, AD8676 Datasheet

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AD8676

Manufacturer Part Number
AD8676
Description
Ultra Precision, 36 V, 2.8 nV/?Hz Dual RRIO Op Amp
Manufacturer
Analog Devices
Datasheet

Specifications of AD8676

-3db Bandwidth
10MHz
Slew Rate
2.5V/µs
Vos
12µV
Ib
0.5nA
# Opamps Per Pkg
2
Input Noise (nv/rthz)
2.8nV/rtHz
Vcc-vee
10V to 36V
Isy Per Amplifier
2.9mA
Packages
SOIC,SOP

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Price
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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
APPLICATIONS
Precision instrumentation
PLL filters
Laser diode control loops
Strain gage amplifiers
Medical instrumentation
Thermocouple amplifiers
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
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.
Rev.
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.
C
OP07
amplifier. Unlike other low
Dual Rail-to-Rail Output Op Amp
Ultraprecision, 36 V, 2.8 nV/√Hz
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113 ©
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
The
low noise op amps offered by Analog Devices, Inc.
Table 1. Voltage Noise
Package
Single
Dual
Quad
AD8675
AD8675
0.9 nV
AD797
and AD8676 are members of a growing series of
data sheet.
OUT A
OUT A
–IN A
+IN A
–IN A
+IN A
PIN CONFIGURATIONS
2006–2011
V–
V–
Figure 2. 8-Lead MSOP (RM-8)
Figure 1. 8-Lead SOIC_N (R-8)
1.1 nV
AD8597
AD8599
1
2
3
4
1
2
3
4
(Not to Scale)
(Not to Scale)
AD8676
TOP VIEW
TOP VIEW
AD8676
Analog Devices, Inc. All rights reserved.
1.8 nV
ADA4004-1
ADA4004-2
ADA4004-4
8
7
6
5
8
7
6
5
V+
OUT B
–IN B
+IN B
V+
OUT B
–IN B
+IN B
2.8 nV
AD8675
AD8676
AD8676
www.analog.com
3.8 nV
AD8671
AD8672
AD8674

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AD8676 Summary of contents

Page 1

... 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 Hz), the AD8676 is perfectly suited for applications where large error sources cannot be tolerated. Precision instrumentation, PLL and other ...

Page 2

... AD8676 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Pin Configurations ........................................................................... 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Electrical Specifications ............................................................... 3 REVISION HISTORY 8/11—Rev Rev. C Change to Y-Axis Label, Figure 9 ................................................... 7 11/09—Rev Rev. B Changes to General Description Section ...................................... 1 Added Table 1; Renumbered Sequentially .................................... 1 Updated Outline Dimensions ....................................................... 11 Changes to Ordering Guide .......................................................... 11   ...

Page 3

... −40°C ≤ T ≤ +125° kΩ L GBP e p-p 0 kHz Rev Page AD8676 Min Typ Max Unit 12 50 μV 60 μV 100 μV 15 160 μV 250 μV − −5.5 +5.5 nA −1 ...

Page 4

... AD8676 V = ± +25°C, unless otherwise specified Table 3. Parameter INPUT CHARACTERISTICS Offset Voltage B Grade (SOIC) B Grade (MSOP) A Grade (SOIC, MSOP) Offset Voltage B Grade (SOIC, MSOP) A Grade (SOIC, MSOP) Input Bias Current Input Offset Current Input Voltage Range ...

Page 5

... The op amp supplies must be established simultaneously with, or before, any input signals are applied. If this is not possible, −65°C to +150°C the input current must be limited to 10 mA. 300°C ESD CAUTION Rev Page AD8676 θ θ Unit JA JC 210 45 ° ...

Page 6

... AD8676 TYPICAL PERFORMANCE CHARACTERISTICS ±15 V and ± 25°C, unless otherwise specified 100 1k FREQUENCY (Hz) Figure 3. Voltage Noise Density vs. Frequency –100 –80 –60 –40 – (µV) OS Figure 4. Input Offset Voltage Distribution ...

Page 7

... Figure 13. Closed-Loop Gain vs. Frequency 100 10k 100k 1M FREQUENCY (Hz) Figure 14. Z vs. Frequency OUT AD8676 180 R = 2kΩ 35pF L 135 θ = 55.2° –45 –90 –135 –180 10M 100M 10M 100M 10M 100M ...

Page 8

... AD8676 ±15 V and ± 25°C, unless otherwise specified –5 –10 –15 TIME (10µs/DIV) Figure 15. Large Signal Transient Response –1 –2 –3 –4 TIME (10µs/DIV) Figure 16. Large Signal Transient Response 100mV p-p ...

Page 9

... Rev Page SOURCE SINK 1 0.001 0.01 0.1 1 LOAD CURRENT (mA) –40 – TEMPERATURE (°C) vs. Temperature –40 – TEMPERATURE (°C) vs. Temperature AD8676 10 100 R = 2kΩ ±15V S 100 120 = ± 2kΩ ±5V S 100 120 = ± ...

Page 10

... AD8676 ±15 V and ± 25°C, unless otherwise specified. A –14.70 –14.75 –14.80 –14.85 –14.90 –14.95 –15.00 –40 – TEMPERATURE (°C) Figure 27. Low Output Voltage, V vs. Temperature –4. 2kΩ ±15V S –4.94 –4.95 –4.96 –4.97 –4.98 –4.99 –5.00 ...

Page 11

... AD8676ARZ-REEL −40°C to +125°C AD8676ARZ-REEL7 −40°C to +125°C AD8676BRMZ −40°C to +125°C AD8676BRMZ-REEL −40°C to +125°C AD8676BRZ −40°C to +125°C AD8676BRZ-REEL −40°C to +125°C AD8676BRZ-REEL7 −40°C to +125° RoHs Compliant Part. 5.00 (0.1968) 4 ...

Page 12

... AD8676 NOTES ©2006–2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06487-0-8/11(C) Rev Page Data Sheet ...

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