AD8676BRZ [ADI]
Ultra Precision, 36 V, 2.8 nV/☆Hz Dual Rail-to-Rail Output Op Amp; 超精密， 36 V ， 2.8纳伏/赫兹☆双通道轨到轨输出运算放大器
| 型号： | AD8676BRZ |
| 厂家： | 
ADI |
| 描述： | Ultra Precision, 36 V, 2.8 nV/☆Hz Dual Rail-to-Rail Output Op Amp |
| 文件： | 总12页 (文件大小：501K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ultra Precision, 36 V, 2.8 nV/√Hz
Dual Rail-to-Rail Output Op Amp
AD8676
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
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 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 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.
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.
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
For the single version of this ultraprecision rail-to-rail op amp,
see the AD867± data sheet.
Rev. 0
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
Fax: 781.461.3113
www.analog.com
©2006 Analog Devices, Inc. All rights reserved.
AD8676
TABLE OF CONTENTS
Features .............................................................................................. ꢁ
Absolute Maximum Ratings ............................................................±
Thermal Resistance.......................................................................±
Power Sequencing .........................................................................±
ESD Caution...................................................................................±
Typical Performance Characteristics ..............................................6
Outline Dimensions....................................................................... ꢁ0
Ordering Guide .......................................................................... ꢁ0
Applications....................................................................................... ꢁ
Pin Configurations ........................................................................... ꢁ
General Description......................................................................... ꢁ
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Electrical Specifications............................................................... 3
REVISION HISTORY
10/06—Revision 0: Initial Version
Rev. 0 | Page 2 of 12
AD8676
SPECIFICATIONS
ELECTRICAL SPECIFICATIONS
ꢀS = ±±.0 ꢀ, ꢀCM = 0 ꢀ, ꢀO = 0 ꢀ, TA = +2±°C, unless otherwise specified.
Table 1.
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
V/mV
IB
−2
−5.5
−1
−2.8
−3.5
105
105
1000
+0.5
+1
+0.1
+0.1
−40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
Input Offset Current
IOS
+2.8
+3.5
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
130
2000
Open-Loop Gain
700
1250
0.2
V/mV
μV/°C
Offset Voltage Drift
OUTPUT CHARACTERISTICS
Output Voltage High
ΔVOS/ΔT
VOH
0.6
RL = 2 kΩ to ground
−40°C ≤ TA ≤ +125°C
+4.84
+4.78
+4.86
+4.82
V
V
Output Voltage Low
VOL
RL = 2 kΩ to ground
−40°C ≤ TA ≤ +125°C
−4.95
−4.93
−4.86
−4.82
V
V
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
2.3
dB
dB
mA
mA
Supply Current/Amplifier
2.7
3.4
−40°C ≤ TA ≤ +125°C
2.7
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. 0 | Page 3 of 12
AD8676
ꢀS = ±ꢁ± ꢀ, ꢀ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
+4.5
+1
μV
μV
nA
nA
nA
nA
V
dB
dB
V/mV
IB
−2
−4.5
−1
−2.8
−13.5
111
107
1500
−0.5
−1
−0.1
−0.1
−40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
Input Offset Current
IOS
+2.8
+13.5
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
4000
Open-Loop Gain
700
1700
0.2
V/mV
μV/°C
Offset Voltage Drift
OUTPUT CHARACTERISTICS
Output Voltage High
ΔVOS/ΔT
VOH
0.6
RL = 2 kΩ to ground
−40°C ≤ TA ≤ +125°C
RL = 2 kΩ to ground
−40°C ≤ TA ≤ +125°C
+14.65 +14.7
+14.49 +14.59
−14.88
V
V
V
V
Output Voltage Low
VOL
−14.75
−14.69
−14.83
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
2.9
3.8
−40°C ≤ TA ≤ +125°C
2.9
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. 0 | Page 4 of 12
AD8676
ABSOLUTE MAXIMUM RATINGS
Table 3.
THERMAL RESISTANCE
Parameter
Rating
Table 4. Thermal Resistance
Package Type
8-Lead MSOP (RM)
8-Lead SOIC_N (R)
Supply Voltage
Input Voltage
18 V
V Supply − 1.5 V
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.
−65°C to +150°C
Lead Temperature Range (Soldering, 10 sec) 300°C
If this is not possible, the input current must be limited to ꢁ0 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. 0 | Page 5 of 12
AD8676
TYPICAL PERFORMANCE CHARACTERISTICS
±ꢁ± ꢀ and ±± ꢀ, TA = 2±°C, unless otherwise specified.
10
150
100
50
9
8
7
6
5
4
3
2
0
–50
–100
–150
1
0
1
10
100
1k
10k
100k
–45 –30 –15
0
15 30 45 60 75 90 105 120 135
TEMPERATURE (°C)
FREQUENCY (Hz)
Figure 3. Voltage Noise Density vs. Frequency
Figure 6. Offset Voltage vs. Temperature
90
120
T
= 25°C
A
80
70
60
50
40
30
20
10
0
100
80
60
40
20
0
–100 –80 –60 –40 –20
0
20
(µV)
40
60
80 100
–0.65 –0.55 –0.45 –0.35 –0.25 –0.15 –0.05
0.05
V
I (nA)
B
OS
Figure 4. Input Offset Voltage Distribution
Figure 7. Input Bias Current, VSY
=
15 V
25
20
15
10
160
140
120
100
80
60
40
5
0
20
0
–
0.65
–0.60
–
0.55
–0.50
–0.45
–
0.40
–0.35
–
0.30
–0.25
–
0.20
–0.15
I
(nA)
B
T
V
(µV/°C)
OS
C
Figure 8. Input Bias Current, VSY
=
5 V
Figure 5. TCVOS Distribution
Rev. 0 | Page 6 of 12
AD8676
5
4
120
100
80
180
R
C
= 2kΩ
= 35pF
= 55.2
L
L
GAIN
θ
M
120
3
60
2
PHASE
40
60
0
1
V
V
= ±5V
SY
20
0
0
–20
–40
–60
–80
= ±15V
–1
–2
–3
–4
–5
SY
–60
–120
–180
–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
3.0
2.5
60
50
40
G = 100
30
20
2.0
1.5
G = 10
G = 1
10
0
1.0
0.5
0
–10
–20
–30
–40
5
10
15
20
25
30
35
1k
10k
100k
1M
10M
100M
SUPPLY VOLTAGE (V)
FREQUENCY (Hz)
Figure 10. Supply Current vs. Total Supply Voltage
Figure 13. Closed-Loop Gain vs. Frequency
3.5
70
60
50
40
30
20
10
0
3.0
2.5
2.0
V
V
= ±15V
= ±5V
S
S
A
= 100
VO
1.5
1.0
0.5
0
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. 0 | Page 7 of 12
AD8676
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
–20
–30
V
A
R
= 200mV p-p
IN
= –100
VO
= 10kΩ
L
–4
1
6
11
16
21
26
31
36
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. 0 | Page 8 of 12
AD8676
160
140
120
100
80
1000
100
T
= 25°C
A
SOURCE
–PSRR
60
+PSRR
40
20
10
SINK
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
148
14.86
V
= ±15V
SY
R
= 2kΩ
L
147
146
145
144
143
142
141
140
14.84
14.82
14.80
14.78
14.76
14.74
14.72
14.70
V
OH
–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. +Swing vs. Temperature, VOH
–14.70
0.06
V
R
= ±15V
= 2kΩ
SY
L
0.04
–14.75
–14.80
–14.85
–14.90
–14.95
–15.00
0.02
0
V
OL
–0.02
–0.04
–0.06
–40
–20
0
20
40
60
80
100
120
0
1
2
3
4
5
6
7
8
9
10
TEMPERATURE (°C)
TIME (s)
Figure 23. Voltage Noise (0.1 Hz to 10 Hz)
Figure 26. −Swing vs. Temperature, VOL
Rev. 0 | Page 9 of 12
AD8676
OUTLINE DIMENSIONS
5.00 (0.1968)
4.80 (0.1890)
3.20
3.00
2.80
8
1
5
4
6.20 (0.2440)
5.80 (0.2284)
4.00 (0.1574)
3.80 (0.1497)
8
1
5
4
5.15
4.90
4.65
3.20
3.00
2.80
0.50 (0.0196)
0.25 (0.0099)
1.27 (0.0500)
BSC
45°
1.75 (0.0688)
1.35 (0.0532)
PIN 1
0.25 (0.0098)
0.10 (0.0040)
8°
0°
0.65 BSC
0.95
0.85
0.75
0.51 (0.0201)
0.31 (0.0122)
COPLANARITY
0.10
1.27 (0.0500)
0.40 (0.0157)
1.10 MAX
0.25 (0.0098)
0.17 (0.0067)
SEATING
PLANE
0.80
0.60
0.40
8°
0°
0.15
0.00
0.38
0.22
0.23
0.08
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.
SEATING
PLANE
COPLANARITY
0.10
COMPLIANT TO JEDEC STANDARDS MO-187-AA
Figure 27. 8-Lead Standard Small Outline Package [SOIC_N]
Narrow Body (R-8)
Figure 28. 8-Lead Mini Small Outline Package [MSOP]
(RM-8)
Dimensions shown in millimeters and (inches)
Dimensions shown in millimeters
ORDERING GUIDE
Model
Temperature Range
−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
Package Description
Package Option
Branding
A13
A13
AD8676ARMZ-R21
AD8676ARMZ-REEL1
AD8676ARZ1
AD8676ARZ-REEL1
AD8676ARZ-REEL71
AD8676BRMZ-R21
AD8676BRMZ-REEL1
AD8676BRZ1
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]
RM-8
RM-8
R-8
R-8
R-8
RM-8
RM-8
R-8
R-8
R-8
A1L
A1L
AD8676BRZ-REEL1
AD8676BRZ-REEL71
1 Z = Pb-free part.
Rev. 0 | Page 10 of 12
AD8676
NOTES
Rev. 0 | Page 11 of 12
AD8676
NOTES
©2006 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D0±±64-0-10/06(0)
Rev. 0 | Page 12 of 12
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