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AD8554 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer AD8554
Beschreibung Rail-to-Rail Input/Output Operational Amplifiers
Hersteller Analog Devices
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Gesamt 24 Seiten
AD8554 Datasheet, Funktion
Data Sheet
Zero-Drift, Single-Supply, Rail-to-Rail
Input/Output Operational Amplifiers
AD8551/AD8552/AD8554
FEATURES
Low offset voltage: 1 μV
Input offset drift: 0.005 μV/°C
Rail-to-rail input and output swing
5 V/2.7 V single-supply operation
High gain, CMRR, PSRR: 130 dB
Ultralow input bias current: 20 pA
Low supply current: 700 μA/op amp
Overload recovery time: 50 μs
No external capacitors required
APPLICATIONS
Temperature sensors
Pressure sensors
Precision current sensing
Strain gage amplifiers
Medical instrumentation
Thermocouple amplifiers
GENERAL DESCRIPTION
This family of amplifiers has ultralow offset, drift, and bias
current. The AD8551, AD8552, and AD8554 are single, dual,
and quad amplifiers featuring rail-to-rail input and output swings.
All are guaranteed to operate from 2.7 V to 5 V with a single supply.
The AD8551/AD8552/AD8554 provide the benefits previously
found only in expensive auto-zeroing or chopper-stabilized
amplifiers. Using Analog Devices, Inc. topology, these new
zero-drift amplifiers combine low cost with high accuracy. No
external capacitors are required.
With an offset voltage of only 1 μV and drift of 0.005 μV/°C, the
AD8551/AD8552/AD8554 are perfectly suited for applications
in which error sources cannot be tolerated. Temperature,
position and pressure sensors, medical equipment, and strain
gage amplifiers benefit greatly from nearly zero drift over their
operating temperature range. The rail-to-rail input and output
swings provided by the AD8551/AD8552/AD8554 make both
high-side and low-side sensing easy.
The AD8551/AD8552/AD8554 are specified for the extended
industrial/automotive temperature range (−40°C to +125°C).
The AD8551 single amplifier is available in 8-lead MSOP and
8-lead narrow SOIC packages. The AD8552 dual amplifier is
available in 8-lead narrow SOIC and 8-lead TSSOP surface-
mount packages. The AD8554 quad is available in 14-lead
narrow SOIC and 14-lead TSSOP packages.
PIN CONFIGURATIONS
NC
–IN A
+IN A
V–
18
AD8551
45
NC
V+
OUT A
NC
NC = NO CONNECT
Figure 1. 8-Lead MSOP (RM Suffix)
NC 1
–IN A 2
+IN A 3
V– 4
AD8551
8 NC
7 V+
6 OUT A
5 NC
NC = NO CONNECT
Figure 2. 8-Lead SOIC (R Suffix)
OUT A
–IN A
+IN A
V–
18
AD8552
45
V+
OUT B
–IN B
+IN B
Figure 3. 8-Lead TSSOP (RU Suffix)
OUT A 1
–IN A 2
+IN A 3
V– 4
AD8552
8 V+
7 OUT B
6 –IN B
5 +IN B
Figure 4. 8-Lead SOIC (R Suffix)
OUT A
–IN A
+IN A
V+
+IN B
–IN B
OUT B
1 14
AD8554
78
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
Figure 5. 14-Lead TSSOP (RU Suffix)
OUT A 1
–IN A 2
+IN A 3
V+ 4
+IN B 5
–IN B 6
OUT B 7
AD8554
14 OUT D
13 –IN D
12 +IN D
11 V–
10 +IN C
9 –IN C
8 OUT C
Figure 6. 14-Lead SOIC (R Suffix)
Rev. F
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor 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 ©1999–2015 Analog Devices, Inc. All rights reserved.
Technical Support
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AD8554 Datasheet, Funktion
AD8551/AD8552/AD8554
TYPICAL PERFORMANCE CHARACTERISTICS
180
VSY = 2.7V
160 VCM = 1.35V
TA = 25°C
140
120
100
80
60
40
20
0
–2.5 –1.5 –0.5 0.5 1.5
OFFSET VOLTAGE (µV)
2.5
Figure 7. Input Offset Voltage Distribution at 2.7 V
50
VSY = 5V
40 TA = –40°C, +25°C, +85°C
30
+85°C
20
10
+25°C
0
–40°C
–10
–20
–30
0
1 234
INPUT COMMON-MODE VOLTAGE (V)
5
Figure 8. Input Bias Current vs. Common-Mode Voltage
1500
1000
VSY = 5V
TA = 125°C
500
0
–500
–1000
–1500
–2000
0
1 2 34
INPUT COMMON-MODE VOLTAGE (V)
Figure 9. Input Bias Current vs. Common-Mode Voltage
5
Data Sheet
180
VSY = 5V
160 VCM = 2.5V
TA = 25°C
140
120
100
80
60
40
20
0
–2.5
–1.5 –0.5 0.5
1.5
OFFSET VOLTAGE (µV)
2.5
Figure 10. Input Offset Voltage Distribution at 5 V
12
VSY = 5V
VCM = 2.5V
10 TA = –40°C TO +125°C
8
6
4
2
0
0 1 23 4 5 6
INPUT OFFSET DRIFT (nV/°C)
Figure 11. Input Offset Voltage Drift Distribution at 5 V
10k
VSY = 5V
TA = 25°C
1k
100
SOURCE
10
SINK
1
0.1
0.0001
0.001
0.01 0.1
1
LOAD CURRENT (mA)
10 100
Figure 12. Output Voltage to Supply Rail vs. Load Current at 5 V
Rev. F | Page 6 of 24

6 Page









AD8554 pdf, datenblatt
AD8551/AD8552/AD8554
VSY = 5V
112 RS = 0Ω
96
80
64
48
32
16
0 5 10 15 20 25
FREQUENCY (kHz)
Figure 43. Voltage Noise Density at 5 V from 0 Hz to 25 kHz
VSY = 5V
168 RS = 0Ω
144
120
96
72
48
24
0 5 10
FREQUENCY (Hz)
Figure 44. Voltage Noise Density at 5 V from 0 Hz to 10 Hz
Data Sheet
150
VSY = 2.7V TO 5.5V
145
140
135
130
125
–75 –50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
Figure 45. Power Supply Rejection vs. Temperature
50
VSY = 2.7V
40
30
ISC–
20
10
0
–10 ISC+
–20
–30
–40
–50
–75 –50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
Figure 46. Output Short-Circuit Current vs. Temperature
Rev. F | Page 12 of 24

12 Page





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