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PDF ADA4528-1 Data sheet ( Hoja de datos )
| Número de pieza | ADA4528-1 | |
| Descripción | Zero-Drift Op Amp | |
| Fabricantes | Analog Devices | |
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Data Sheet
Precision, Ultralow Noise, RRIO,
Zero-Drift Op Amp
ADA4528-1/ADA4528-2
FEATURES
Low offset voltage: 2.5 µV maximum
Low offset voltage drift: 0.015 μV/°C maximum
Low noise
5.6 nV/√Hz at f = 1 kHz, AV = +100
97 nV p-p at f = 0.1 Hz to 10 Hz, AV = +100
Open-loop gain: 130 dB minimum
CMRR: 135 dB minimum
PSRR: 130 dB minimum
Unity-gain crossover: 4 MHz
Gain bandwidth product: 3 MHz at AV = +100
−3 dB closed-loop bandwidth: 6.2 MHz
Single-supply operation: 2.2 V to 5.5 V
Dual-supply operation: ±1.1 V to ±2.75 V
Rail-to-rail input and output
Unity-gain stable
APPLICATIONS
Thermocouple/thermopile
Load cell and bridge transducers
Precision instrumentation
Electronic scales
Medical instrumentation
Handheld test equipment
GENERAL DESCRIPTION
The ADA4528-1/ADA4528-2 are ultralow noise, zero-drift
operational amplifiers featuring rail-to-rail input and output
swing. With an offset voltage of 2.5 μV, offset voltage drift of
0.015 μV/°C, and typical noise of 97 nV p-p (0.1 Hz to 10 Hz,
AV = +100), the ADA4528-1/ADA4528-2 are well suited for
applications in which error sources cannot be tolerated.
The ADA4528-1/ADA4528-2 have a wide operating supply range
of 2.2 V to 5.5 V, high gain, and excellent CMRR and PSRR
specifications, which make it ideal for applications that require
precision amplification of low level signals, such as position and
pressure sensors, strain gages, and medical instrumentation.
The ADA4528-1/ADA4528-2 are specified over the extended
industrial temperature range (−40°C to +125°C). The ADA4528-1
and ADA4528-2 are available in 8-lead MSOP and 8-lead
LFCSP packages.
For more information about the ADA4528-1/ADA4528-2,
see the AN-1114 Application Note, Lowest Noise Zero-Drift
Amplifier Has 5.6 nV/√Hz Voltage Noise Density.
Rev. D
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.
PIN CONNECTION DIAGRAMS
NIC 1
8 NIC
–IN 2 ADA4528-1 7 V+
+IN 3
TOP VIEW
(Not to Scale)
6 OUT
V– 4
5 NIC
NOTES
1. NIC = NO INTERNAL CONNECTION.
Figure 1. ADA4528-1 Pin Configuration, 8-Lead MSOP
NIC 1
–IN 2
+IN 3
V– 4
ADA4528-1
TOP VIEW
(Not to Scale)
8 NIC
7 V+
6 OUT
5 NIC
NOTES
1. NIC = NO INTERNAL CONNECTION.
2. CONNECT THE EXPOSED PAD TO
V– OR LEAVE IT UNCONNECTED.
Figure 2. ADA4528-1 Pin Configuration, 8-Lead LFCSP
For ADA4528-2 pin connections and for more information about
the pin connections for these products, see the Pin Configurations
and Function Descriptions section.
100
VSY = 5V
AV = 1
VCM = VSY/2
10
1
1 10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
Figure 3. Voltage Noise Density vs. Frequency
Table 1. Analog Devices, Inc., Zero-Drift Op Amp Portfolio1
Ultralow
Type Noise
Low 16 V
30 V
Micropower Power Operating Operating
(<20 µA) (<1 mA) Voltage Voltage
Single ADA4528-1 ADA4051-1 AD8628 AD8638 ADA4638-1
AD8538
Dual ADA4528-2 ADA4051-2 AD8629 AD8639
AD8539
Quad
AD8630
1 See www.analog.com for the latest selection of zero-drift operational amplifiers.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2011–2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 page  
Data Sheet
ADA4528-1/ADA4528-2
ELECTRICAL CHARACTERISTICS—5 V OPERATION
VSY = 5 V, VCM = VSY/2, TA = 25°C, unless otherwise specified.
Table 3.
Parameter
INPUT CHARACTERISTICS
Offset Voltage
Offset Voltage Drift
Input Bias Current
ADA4528-1
ADA4528-2
Input Offset Current
ADA4528-1
ADA4528-2
Input Voltage Range
Common-Mode Rejection Ratio
Open-Loop Gain
Input Resistance
Differential Mode
Common Mode
Input Capacitance
Differential Mode
Common Mode
OUTPUT CHARACTERISTICS
Output Voltage High
Output Voltage Low
Short-Circuit Current
Closed-Loop Output Impedance
POWER SUPPLY
Power Supply Rejection Ratio
Supply Current per Amplifier
DYNAMIC PERFORMANCE
Slew Rate
Settling Time to 0.1%
Unity-Gain Crossover
Phase Margin
Gain Bandwidth Product
−3 dB Closed-Loop Bandwidth
Overload Recovery Time
Symbol Test Conditions/Comments
VOS
ΔVOS/ΔT
IB
VCM = 0 V to 5 V
−40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
IOS
−40°C ≤ TA ≤ +125°C
CMRR
AVO
−40°C ≤ TA ≤ +125°C
VCM = 0 V to 5 V
−40°C ≤ TA ≤ +125°C
RL = 10 kΩ, VO = 0.1 V to 4.9 V
−40°C ≤ TA ≤ +125°C
RL = 2 kΩ, VO = 0.1 V to 4.9 V
−40°C ≤ TA ≤ +125°C
RINDM
RINCM
CINDM
CINCM
VOH RL = 10 kΩ to VCM
−40°C ≤ TA ≤ +125°C
RL = 2 kΩ to VCM
−40°C ≤ TA ≤ +125°C
VOL RL = 10 kΩ to VCM
−40°C ≤ TA ≤ +125°C
RL = 2 kΩ to VCM
−40°C ≤ TA ≤ +125°C
ISC
ZOUT f = 1 kHz, AV = +10
PSRR
ISY
VSY = 2.2 V to 5.5 V
−40°C ≤ TA ≤ +125°C
IO = 0 mA
−40°C ≤ TA ≤ +125°C
SR
tS
UGC
ΦM
GBP
f−3dB
RL = 10 kΩ, CL = 100 pF, AV = +1
VIN = 4 V step, RL = 10 kΩ, CL = 100 pF, AV = −1
VIN = 10 mV p-p, RL = 10 kΩ, CL = 100 pF, AV = +1
VIN = 10 mV p-p, RL = 10 kΩ, CL = 100 pF, AV = +1
VIN = 10 mV p-p, RL = 10 kΩ, CL = 100 pF, AV = +100
VIN = 10 mV p-p, RL = 10 kΩ, CL = 100 pF, AV = +1
RL = 10 kΩ, CL = 100 pF, AV = −10
Min
0
137
122
127
125
121
120
4.99
4.98
4.96
4.94
130
127
Rev. D | Page 5 of 28
Typ
0.3
0.002
90
125
180
250
160
139
131
190
1
16.5
33
4.995
4.98
5
20
±40
0.1
150
1.5
0.5
10
4
57
3.4
6.5
50
Max
2.5
4
0.015
200
300
250
350
400
500
500
600
5
10
20
40
60
1.8
2.2
Unit
μV
μV
μV/°C
pA
pA
pA
pA
pA
pA
pA
pA
V
dB
dB
dB
dB
dB
dB
kΩ
GΩ
pF
pF
V
V
V
V
mV
mV
mV
mV
mA
Ω
dB
dB
mA
mA
V/μs
µs
MHz
Degrees
MHz
MHz
μs
5 Page 
Data Sheet
400
VSY = 2.5V
300 VCM = VSY/2
200
IB+
100
0
–100
–200
IB–
–300
–400
–50
–25 0 25 50 75 100
TEMPERATURE (°C)
Figure 14. Input Bias Current vs. Temperature
125
600
400 +85°C
–40°C
200
+25°C
0 +125°C
–200
–400
VSY = 2.5V
–600
0
0.5 1.0 1.5 2.0 2.5
VCM (V)
Figure 15. Input Bias Current vs. Common-Mode Voltage
10
VSY = 2.5V
1
100m
10m
1m
–40°C
+25°C
+85°C
+125°C
0.1m
0.001
0.01 0.1
1
LOAD CURRENT (mA)
10
100
Figure 16. Output Voltage (VOL) to Supply Rail vs. Load Current
ADA4528-1/ADA4528-2
400
VSY = 5V
300 VCM = VSY/2
200
100
IB+
0
–100
IB–
–200
–300
–400
–50
–25 0 25 50 75 100
TEMPERATURE (°C)
Figure 17. Input Bias Current vs. Temperature
125
600
400
+85°C
200
–40°C
0 +25°C
–200
–400
+125°C
–600
VSY = 5V
–800
012345
VCM (V)
Figure 18. Input Bias Current vs. Common-Mode Voltage
10
VS = 5V
1
100m
10m
1m
–40°C
+25°C
+85°C
+125°C
0.1m
0.001
0.01 0.1
1
LOAD CURRENT (mA)
10
100
Figure 19. Output Voltage (VOL) to Supply Rail vs. Load Current
Rev. D | Page 11 of 28
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet ADA4528-1.PDF ] | |
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