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AD8676 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer AD8676
Beschreibung Dual Rail-to-Rail Output Op Amp
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 13 Seiten
AD8676 Datasheet, Funktion
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 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.
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 8 V+
2 AD8676 7 OUT B
3 TOP VIEW 6 –IN B
4 (Not to Scale) 5 +IN B
Figure 1. 8-Lead SOIC_N (R-8)
OUT A 1
8 V+
–IN A 2 AD8676 7 OUT B
+IN A 3 TOP VIEW 6 –IN B
(Not to Scale)
V– 4
5 +IN B
Figure 2. 8-Lead MSOP (RM-8)
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 0.9 nV 1.1 nV
Single AD797 AD8597
Dual
AD8599
Quad
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.
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 ©2006–2011 Analog Devices, Inc. All rights reserved.






AD8676 Datasheet, Funktion
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
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.
AD8676
THERMAL RESISTANCE
Table 5. Thermal Resistance
Package Type
8-Lead MSOP (RM)
8-Lead SOIC_N (R)
θJA
210
158
θJC
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.
ESD CAUTION
Rev. C | Page 5 of 12

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AD8676 pdf, datenblatt
Data Sheet
AD8676
OUTLINE DIMENSIONS
5.00 (0.1968)
4.80 (0.1890)
4.00 (0.1574)
3.80 (0.1497)
8
1
5
6.20 (0.2441)
4 5.80 (0.2284)
0.25 (0.0098)
0.10 (0.0040)
1.27 (0.0500)
BSC
1.75 (0.0688)
1.35 (0.0532)
COPLANARITY
0.10 SEATING
PLANE
0.51 (0.0201)
0.31 (0.0122)
0.50 (0.0196)
0.25 (0.0099)
45°
1.27 (0.0500)
0.25 (0.0098) 0.40 (0.0157)
0.17 (0.0067)
COMPLIANT TO JEDEC STANDARDS MS-012-A A
CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN.
Figure 29. 8-Lead Standard Small Outline Package [SOIC_N]
Narrow Body (R-8)
Dimensions shown in millimeters and (inches)
3.20
3.00
2.80
3.20
3.00
2.80
PIN 1
IDENTIFIER
85
14
0.65 BSC
5.15
4.90
4.65
0.95
0.85
0.75
0.15
0.05
COPLANARITY
0.10
1.10 MAX
15° MAX
0.40
0.25
0.23
0.09
0.80
0.55
0.40
COMPLIANT TO JEDEC STANDARDS MO-187-AA
Figure 30. 8-Lead Mini Small Outline Package [MSOP]
(RM-8)
Dimensions shown in millimeters
ORDERING GUIDE
Model1
Temperature Range
AD8676ARMZ
−40°C to +125°C
AD8676ARMZ-REEL −40°C to +125°C
AD8676ARZ
−40°C to +125°C
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°C
1 Z = RoHs Compliant Part.
Package Description
8-Lead Mini Small Outline Package [MSOP]
8-Lead Mini Small Outline Package [MSOP]
8-Lead Standard Small Outline Package [SOIC_N]
8-Lead Standard Small Outline Package [SOIC_N]
8-Lead Standard Small Outline Package [SOIC_N]
8-Lead Mini Small Outline Package [MSOP]
8-Lead Mini Small Outline Package [MSOP]
8-Lead Standard Small Outline Package [SOIC_N]
8-Lead Standard Small Outline Package [SOIC_N]
8-Lead Standard Small Outline Package [SOIC_N]
Package Option
RM-8
RM-8
R-8
R-8
R-8
RM-8
RM-8
R-8
R-8
R-8
Branding
A13
A13
A1L
A1L
Rev. C | Page 11 of 12

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