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AD8676 데이터시트 PDF




Analog Devices에서 제조한 전자 부품 AD8676은 전자 산업 및 응용 분야에서
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부품번호 AD8676 기능
기능 Dual Rail-to-Rail Output Op Amp
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AD8676 데이터시트, 핀배열, 회로
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 pdf, 반도체, 판매, 대치품
Data Sheet
SPECIFICATIONS
ELECTRICAL SPECIFICATIONS
VS = ±5.0 V, VCM = 0 V, VO = 0 V, TA = +25°C, unless otherwise specified.
Table 2.
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
Common-Mode Rejection Ratio
Open-Loop Gain
Offset Voltage Drift
OUTPUT CHARACTERISTICS
Output Voltage High
Output Voltage Low
Short-Circuit Limit
Output Current
POWER SUPPLY
Power Supply Rejection Ratio
Supply Current/Amplifier
DYNAMIC PERFORMANCE
Slew Rate
Gain Bandwidth Product
NOISE PERFORMANCE
Voltage Noise
Voltage Noise Density
Current Noise Density
Symbol
VOS
Conditions
VOS −40°C ≤ TA ≤ +125°C
IB
IOS
CMRR
AVO
ΔVOS/ΔT
VOH
VOL
ISC
IO
PSRR
ISY
SR
GBP
en p-p
en
in
−40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
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
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
VS = ±5.0 V to ±15.0 V
−40°C ≤ TA ≤ +125°C
VO = 0 V
−40°C ≤ TA ≤ +125°C
RL = 2 kΩ
0.1 Hz to 10 Hz
f = 1 kHz
f = 10 Hz
AD8676
Min Typ
Max Unit
12
15
−2
−5.5
−1
−2.8
−3.0
105 130
105
120 126
117
0.2
+4.90
+4.85
+4.80
+4.75
+4.95
+4.89
−4.98
−4.91
+40
±20
106 120
106 120
2.5
2.5
10
0.1
2.8
0.3
50 μV
60 μV
100 μV
160 μV
250 μV
+2 nA
+5.5 nA
+1 nA
+2.8 nA
+3.0 V
dB
dB
dB
dB
0.6 μV/°C
−4.90
−4.85
−4.86
−4.82
V
V
V
V
V
V
V
V
mA
mA
dB
dB
3.2 mA
3.8 mA
V/μs
MHz
μV p-p
nV/√Hz
pA/√Hz
Rev. C | Page 3 of 12

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AD8676 전자부품, 판매, 대치품
AD8676
TYPICAL PERFORMANCE CHARACTERISTICS
±15 V and ±5 V, TA = 25°C, unless otherwise specified.
10
9
8
7
6
5
4
3
2
1
0
1 10 100 1k 10k
FREQUENCY (Hz)
Figure 3. Voltage Noise Density vs. Frequency
100k
90
80
70
60
50
40
30
20
10
0
–100 –80 –60 –40 –20 0
20 40 60 80 100
VOS (µV)
Figure 4. Input Offset Voltage Distribution
25
20
15
10
5
0
TCVOS (µV/°C)
Figure 5. TCVOS Distribution
Data Sheet
150
VS = ±15V
100
50
TYPICAL
0
–50
–100
–150
–40
350
–20 0
20 40 60 80 100
TEMPERATURE (°C)
Figure 6. Offset Voltage vs. Temperature
120
300
250
200
150
10
50
0
–2.0 –1.6 –1.2 –0.8 –0.4 0 0.4 0.8 1.2 1.6
IB (nA)
Figure 7. Input Bias Current, VSY = ±15 V
2.0
350
300
250
200
150
10
50
0
–2.0 –1.6 –1.2 –0.8 –0.4 0 0.4 0.8 1.2 1.6 2.0
IB (nA)
Figure 8. Input Bias Current, VSY = ±5 V
Rev. C | Page 6 of 12

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