AD8676BRMZ [ADI]
Ultraprecision, 36 V, 2.8 nV/âHz Dual Rail-to-Rail Output Op Amp; 超精密， 36 V ， 2.8纳伏/ A ???? Hz的双通道轨到轨输出运算放大器
| 型号： | AD8676BRMZ |
| 厂家： | 
ADI |
| 描述： | Ultraprecision, 36 V, 2.8 nV/âHz Dual Rail-to-Rail Output Op Amp |
| 文件： | 总12页 (文件大小：343K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ultraprecision, 36 V, 2.8 nV/√Hz
Dual Rail-to-Rail Output Op Amp
AD8676
Data Sheet
FEATURES
PIN CONFIGURATIONS
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
OUT A
–IN A
+IN A
V–
1
2
3
4
8
7
6
5
V+
AD8676
OUT B
–IN B
+IN B
TOP VIEW
(Not to Scale)
Figure 1. 8-Lead SOIC_N (R-8)
Wide bandwidth: 10 MHz typical
±± V to ±18 V operation
1
2
3
4
8
7
6
5
OUT A
–IN A
+IN A
V–
V+
OUT B
–IN B
+IN B
AD8676
TOP VIEW
(Not to Scale)
APPLICATIONS
Precision instrumentation
PLL filters
Figure 2. 8-Lead MSOP (RM-8)
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 ±± ꢀ to ±ꢁ± ꢀ.
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 +ꢁ2±°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.
The AD8676 features a rail-to-rail output like that of the OPꢁ84,
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.
For the single version of this ultraprecision, rail-to-rail op amp,
see the AD867± data sheet.
The AD867± and AD8676 are members of a growing series of
low noise op amps offered by Analog Devices, Inc.
With typical offset voltage of only ꢁ2 μꢀ, offset drift of 0.2 μꢀ/°C,
and noise of only 0.ꢁ0 ꢂꢀ p-p (0.ꢁ Hz to ꢁ0 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.
Table 1. Voltage Noise
Package 0.9 nV 1.1 nV
1.8 nV
2.8 nV
3.8 nV
Single
Dual
AD797 AD8597 ADA4004-1
AD8599 ADA4004-2
ADA4004-4
AD8675 AD8671
AD8676 AD8672
AD8674
Quad
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 registeredtrademarks arethe 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
Data Sheet
TABLE OF CONTENTS
Features .............................................................................................. 1
Absolute Maximum Ratings ............................................................5
Thermal Resistance.......................................................................5
Power Sequencing .........................................................................5
ESD Caution...................................................................................5
Typical Performance Characteristics ..............................................6
Outline Dimensions....................................................................... 11
Ordering Guide .......................................................................... 11
Applications....................................................................................... 1
Pin Configurations ........................................................................... 1
General Description......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Electrical Specifications............................................................... 3
REVISION HISTORY
8/11—Rev. B to Rev. C
4/08—Rev. 0 to Rev. A
Change to Y-Axis Label, Figure 9................................................... 7
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
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
10/06—Revision 0: Initial Version
Rev. C | Page 2 of 12
Data Sheet
AD8676
SPECIFICATIONS
ELECTRICAL SPECIFICATIONS
ꢀS = ±±.0 ꢀ, ꢀCM = 0 ꢀ, ꢀO = 0 ꢀ, TA = +2±°C, unless otherwise specified.
Table 2.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
INPUT CHARACTERISTICS
Offset Voltage
VOS
B Grade (SOIC)
B Grade (MSOP)
A Grade (SOIC, MSOP)
Offset Voltage
12
50
60
100
μV
μV
μV
VOS
−40°C ≤ TA ≤ +125°C
B Grade (SOIC, MSOP)
A Grade (SOIC, MSOP)
Input Bias Current
15
160
250
+2
+5.5
+1
μV
μV
nA
nA
nA
nA
V
dB
dB
dB
IB
−2
−5.5
−1
−2.8
−3.0
105
105
120
−40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
Input Offset Current
IOS
+2.8
+3.0
Input Voltage Range
Common-Mode Rejection Ratio
CMRR
AVO
VCM = −3.0 V to +3.0 V
−40°C ≤ TA ≤ +125°C
RL = 2 kΩ to ground,
VO = −3.5 V to +3.5 V
−40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
130
126
Open-Loop Gain
117
dB
μV/°C
Offset Voltage Drift
OUTPUT CHARACTERISTICS
Output Voltage High
ΔVOS/ΔT
VOH
0.2
0.6
RL = 10 kΩ to ground
−40°C ≤ TA ≤ +125°C
RL = 2 kΩ to ground
−40°C ≤ TA ≤ +125°C
RL = 10 kΩ to ground
−40°C ≤ TA ≤ +125°C
RL = 2 kΩ to ground
−40°C ≤ TA ≤ +125°C
+4.90
+4.85
+4.80
+4.75
+4.95
+4.89
−4.98
−4.91
V
V
V
V
V
V
V
V
Output Voltage Low
VOL
−4.90
−4.85
−4.86
−4.82
Short-Circuit Limit
Output Current
ISC
IO
+40
20
mA
mA
POWER SUPPLY
Power Supply Rejection Ratio
PSRR
ISY
VS = 5.0 V to 15.0 V
−40°C ≤ TA ≤ +125°C
VO = 0 V
106
106
120
120
2.5
dB
dB
mA
mA
Supply Current/Amplifier
3.2
3.8
−40°C ≤ TA ≤ +125°C
DYNAMIC PERFORMANCE
Slew Rate
Gain Bandwidth Product
NOISE PERFORMANCE
Voltage Noise
SR
GBP
RL = 2 kΩ
2.5
10
V/μs
MHz
en p-p
en
in
0.1 Hz to 10 Hz
f = 1 kHz
f = 10 Hz
0.1
2.8
0.3
μV p-p
nV/√Hz
pA/√Hz
Voltage Noise Density
Current Noise Density
Rev. C | Page 3 of 12
AD8676
Data Sheet
ꢀS = ±ꢁ± ꢀ, ꢀCM = 0 ꢀ, ꢀO = 0 ꢀ, TA = +2±°C, unless otherwise specified.
Table 3.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
INPUT CHARACTERISTICS
Offset Voltage
VOS
B Grade (SOIC)
B Grade (MSOP)
A Grade (SOIC, MSOP)
Offset Voltage
12
50
60
100
μV
μV
μV
VOS
−40°C ≤ TA ≤ +125°C
B Grade (SOIC, MSOP)
A Grade (SOIC, MSOP)
Input Bias Current
15
160
250
+2
+4.5
+1
μV
μV
nA
nA
nA
nA
V
dB
dB
dB
IB
−2
−4.5
−1
−2.8
−12.5
111
107
123
−40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
Input Offset Current
IOS
+2.8
+12.5
Input Voltage Range
Common-Mode Rejection Ratio
CMRR
AVO
VCM = −12.5 V to +12.5 V
−40°C ≤ TA ≤ +125°C
RL = 2 kΩ to ground,
VO = −13.5 V to +13.5 V
−40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
130
130
132
Open-Loop Gain
117
dB
μV/°C
Offset Voltage Drift
OUTPUT CHARACTERISTICS
Output Voltage High
ΔVOS/ΔT
VOH
0.2
0.6
RL = 10 kΩ to ground
−40°C ≤ TA ≤ +125°C
RL = 2 kΩ to ground
−40°C ≤ TA ≤ +125°C
RL = 10 kΩ to ground
−40°C ≤ TA ≤ +125°C
RL = 2 kΩ to ground
−40°C ≤ TA ≤ +125°C
+14.85 +14.92
+14.80
+14.60 +14.75
+14.40
V
V
V
V
V
V
V
V
Output Voltage Low
VOL
−14.96
−14.94
−14.90
−14.75
−14.60
−14.85
Short-Circuit Limit
Output Current
ISC
IO
+40
20
mA
mA
POWER SUPPLY
Power Supply Rejection Ratio
PSRR
ISY
VS = 5.0 V to 15.0 V
−40°C ≤ TA ≤ +125°C
VO = 0 V
106
106
120
2.7
dB
dB
mA
mA
Supply Current/Amplifier
3.4
4.2
−40°C ≤ TA ≤ +125°C
DYNAMIC PERFORMANCE
Slew Rate
Gain Bandwidth Product
NOISE PERFORMANCE
Voltage Noise
SR
GBP
RL =10 kΩ
2.5
10
V/μs
MHz
en p-p
en
in
0.1 Hz to 10 Hz
f = 1 kHz
f = 10 Hz
0.1
2.8
0.3
μV p-p
nV/√Hz
pA/√Hz
Voltage Noise Density
Current Noise Density
Rev. C | Page 4 of 12
Data Sheet
AD8676
ABSOLUTE MAXIMUM RATINGS
Table 4.
THERMAL RESISTANCE
Table 5. Thermal Resistance
Package Type
8-Lead MSOP (RM)
8-Lead SOIC_N (R)
Parameter
Rating
Supply Voltage
Input Voltage
18 V
V supply
0.7 V
θJA
θJC
45
43
Unit
°C/W
°C/W
210
158
Differential Input Voltage
Output Short-Circuit Duration to GND
Storage Temperature Range
RM, R Packages
Operating Temperature Range
Junction Temperature Range
RM, R Packages
Indefinite
−65°C to +150°C
−40°C to +125°C
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 ꢁ0 mA.
−65°C to +150°C
Lead Temperature Range (Soldering, 10 sec) 300°C
ESD CAUTION
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.
Rev. C | Page 5 of 12
AD8676
Data Sheet
TYPICAL PERFORMANCE CHARACTERISTICS
±ꢁ± ꢀ and ±± ꢀ, TA = 2±°C, unless otherwise specified.
10
150
100
50
V
= ±15V
S
9
8
7
6
5
4
3
2
TYPICAL
0
–50
–100
–150
1
0
1
10
100
1k
10k
100k
–40
–20
0
20
40
60
80
100
120
FREQUENCY (Hz)
TEMPERATURE (°C)
Figure 3. Voltage Noise Density vs. Frequency
Figure 6. Offset Voltage vs. Temperature
90
350
300
250
200
150
10
80
70
60
50
40
30
20
10
0
50
0
–100 –80 –60 –40 –20
0
20
(µV)
40
60
80 100
–2.0 –1.6 –1.2 –0.8 –0.4
0
0.4 0.8 1.2 1.6 2.0
(nA)
V
I
OS
B
Figure 4. Input Offset Voltage Distribution
Figure 7. Input Bias Current, VSY
= 15 V
25
20
15
10
350
300
250
200
150
10
5
0
50
0
–2.0 –1.6 –1.2 –0.8 –0.4
0
0.4 0.8 1.2 1.6 2.0
(nA)
I
B
T
V
(µV/°C)
OS
C
Figure 5. TCVOS Distribution
Figure 8. Input Bias Current, VSY
= 5 V
Rev. C | Page 6 of 12
Data Sheet
AD8676
±ꢁ± ꢀ and ±± ꢀ, TA = 2±°C, unless otherwise specified.
120
100
80
180
5
4
3
2
1
R
C
= 2kΩ
= 35pF
= 55.2°
L
L
GAIN
135
90
θ
M
60
PHASE
40
45
20
0
–1
–2
–3
–4
–5
0
V
V
= ±5V
0
S
S
–20
–40
–60
–80
–45
–90
–135
–180
= ±15V
–100
–120
–40
–20
0
20
40
60
80
100
120
100
1k
10k
100k
1M
10M
100M
TEMPERATURE (°C)
FREQUENCY (Hz)
Figure 9. Input Bias Current vs. Temperature
Figure 12. Gain and Phase vs. Frequency
60
50
40
3.0
2.5
2.0
1.5
1.0
0.5
0
G = 100
30
20
10
G = 10
G = 1
0
–10
–20
–30
–40
1k
10k
100k
1M
10M
100M
5
10
15
20
25
30
35
FREQUENCY (Hz)
SUPPLY VOLTAGE (V)
Figure 13. Closed-Loop Gain vs. Frequency
Figure 10. Supply Current vs. Total Supply Voltage
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
70
60
50
40
30
20
10
0
V
V
= ±15V
= ±5V
S
A
= 100
VO
S
A
= 10
VO
A
= 1
VO
–40
–20
0
20
40
60
80
100
120
1k
10k
100k
1M
10M
100M
TEMPERATURE (°C)
FREQUENCY (Hz)
Figure 11. Supply Current vs. Temperature
Figure 14. ZOUT vs. Frequency
Rev. C | Page 7 of 12
AD8676
Data Sheet
±ꢁ± ꢀ and ±± ꢀ, TA = 2±°C, unless otherwise specified.
15
0.1
50
V
R
A
= ±10V
= 2kΩ
= +1
IN
V
IN
L
V
0
–0.1
–0.2
–0.3
–0.4
–0.5
–0.6
–0.7
40
30
20
10
0
10
5
0
–5
–10
–15
V
OUT
–10
V
A
R
= 200mV p-p
–20
IN
= –100
VO
= 10kΩ
L
–30
36
–4
1
6
11
16
21
26
31
TIME (10µs/DIV)
TIME (µs)
Figure 15. Large Signal Transient Response, VSY
=
15 V
Figure 18. Positive Overvoltage Recovery
4
0.3
50
V
R
A
= ±3.5V
= 2kΩ
= +1
V
A
R
= 200mV p-p
IN
IN
= –100
L
V
VO
3
2
0.2
0.1
40
= 10kΩ
L
30
V
IN
1
0
20
0
–0.1
–0.2
–0.3
–0.4
–0.5
10
–1
–2
0
V
OUT
–10
–20
–30
–3
–4
–4
1
6
11
16
21
26
31
36
TIME (10µs/DIV)
TIME (µs)
Figure 16. Large Signal Transient Response, VSY
=
5 V
Figure 19. Negative Overvoltage Recovery
70
180
A
V
= +1
= 100mV p-p
V
160
140
120
100
80
IN
60
50
40
30
20
+OS
60
–OS
40
20
10
0
0
–20
10
1
10
100
1k
10k
100k
100
1k
10k
100k
1M
10M
100M
CAPACITANCE (pF)
FREQUENCY (Hz)
Figure 17. Small Signal Overshoot vs. Load Capacitance
Figure 20. CMRR vs. Frequency
Rev. C | Page 8 of 12
Data Sheet
AD8676
±ꢁ± ꢀ and ±± ꢀ, TA = 2±°C, unless otherwise specified.
160
140
120
1000
100
SOURCE
100
–PSRR
80
60
+PSRR
40
10
SINK
20
0
–20
10
1
0.001
100
1k
10k
100k
1M
10M
100M
0.01
0.1
1
10
100
FREQUENCY (Hz)
LOAD CURRENT (mA)
Figure 21. Power Supply Rejection Ratio vs. Frequency
Figure 24. Output Saturation Voltage vs. Output Load Current
126
124
122
120
118
116
114
112
15.0
R
= 2kΩ
L
S
V
= ±15V
14.9
14.8
14.7
14.6
14.5
14.4
–40
–20
0
20
40
60
80
100
120
–40
–20
0
20
40
60
80
100
120
TEMPERATURE (°C)
TEMPERATURE (°C)
Figure 22. Power Supply Rejection Ratio vs. Temperature
Figure 25. High Output Voltage, VOH vs. Temperature, VS = 15 V
0.06
5.00
R
V
= 2kΩ
= ±5V
L
S
0.04
4.95
4.90
4.85
4.80
4.75
0.02
0
–0.02
–0.04
–0.06
0
1
2
3
4
5
6
7
8
9
10
–40
–20
0
20
40
60
80
100
120
TIME (s)
TEMPERATURE (°C)
Figure 23. Voltage Noise (0.1 Hz to 10 Hz)
Figure 26. High Output Voltage, VOH vs. Temperature, VS = 5 V
Rev. C | Page 9 of 12
AD8676
Data Sheet
±ꢁ± ꢀ and ±± ꢀ, TA = 2±°C, unless otherwise specified.
–14.70
–4.93
–4.94
–4.95
–4.96
–4.97
–4.98
–4.99
–5.00
R
V
= 2kΩ
= ±15V
R
V
= 2kΩ
= ±5V
L
L
S
S
–14.75
–14.80
–14.85
–14.90
–14.95
–15.00
–40
–20
0
20
40
60
80
100
120
–40
–20
0
20
40
60
80
100
120
TEMPERATURE (°C)
TEMPERATURE (°C)
Figure 27. Low Output Voltage, VOL vs. Temperature, VS = 15 V
Figure 28. Low Output Voltage, VOL vs. Temperature, VS = 5 V
Rev. C | Page 10 of 12
Data Sheet
AD8676
OUTLINE DIMENSIONS
5.00 (0.1968)
4.80 (0.1890)
8
1
5
4
6.20 (0.2441)
5.80 (0.2284)
4.00 (0.1574)
3.80 (0.1497)
0.50 (0.0196)
0.25 (0.0099)
1.27 (0.0500)
BSC
45°
1.75 (0.0688)
1.35 (0.0532)
0.25 (0.0098)
0.10 (0.0040)
8°
0°
0.51 (0.0201)
0.31 (0.0122)
COPLANARITY
0.10
1.27 (0.0500)
0.40 (0.0157)
0.25 (0.0098)
0.17 (0.0067)
SEATING
PLANE
COMPLIANT TO JEDEC STANDARDS MS-012-AA
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
8
1
5
4
5.15
4.90
4.65
3.20
3.00
2.80
PIN 1
IDENTIFIER
0.65 BSC
0.95
0.85
0.75
15° MAX
1.10 MAX
0.80
0.55
0.40
0.15
0.05
0.23
0.09
6°
0°
0.40
0.25
COPLANARITY
0.10
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
Package Description
Package Option
Branding
A13
A13
AD8676ARMZ
AD8676ARMZ-REEL
AD8676ARZ
AD8676ARZ-REEL
AD8676ARZ-REEL7
AD8676BRMZ
AD8676BRMZ-REEL
AD8676BRZ
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
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]
RM-8
RM-8
R-8
R-8
R-8
RM-8
RM-8
R-8
R-8
R-8
A1L
A1L
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]
AD8676BRZ-REEL
AD8676BRZ-REEL7
1 Z = RoHs Compliant Part.
Rev. C | Page 11 of 12
AD8676
NOTES
Data Sheet
©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. C | Page 12 of 12
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