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Analog Devices Semiconductor Electronic Components Datasheet

AD524 Datasheet

Precision Instrumentation Amplifier

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AD524 pdf
a
Precision
Instrumentation Amplifier
AD524
FEATURES
Low Noise: 0.3 V p-p 0.1 Hz to 10 Hz
Low Nonlinearity: 0.003% (G = 1)
High CMRR: 120 dB (G = 1000)
Low Offset Voltage: 50 V
Low Offset Voltage Drift: 0.5 V/؇C
Gain Bandwidth Product: 25 MHz
Pin Programmable Gains of 1, 10, 100, 1000
Input Protection, Power On–Power Off
No External Components Required
Internally Compensated
MIL-STD-883B and Chips Available
16-Lead Ceramic DIP and SOIC Packages and
20-Terminal Leadless Chip Carriers Available
Available in Tape and Reel in Accordance
with EIA-481A Standard
Standard Military Drawing Also Available
PRODUCT DESCRIPTION
The AD524 is a precision monolithic instrumentation amplifier
designed for data acquisition applications requiring high accu-
racy under worst-case operating conditions. An outstanding
combination of high linearity, high common mode rejection, low
offset voltage drift and low noise makes the AD524 suitable for
use in many data acquisition systems.
The AD524 has an output offset voltage drift of less than 25 µV/°C,
input offset voltage drift of less than 0.5 µV/°C, CMR above
90 dB at unity gain (120 dB at G = 1000) and maximum non-
linearity of 0.003% at G = 1. In addition to the outstanding dc
specifications, the AD524 also has a 25 kHz gain bandwidth
product (G = 1000). To make it suitable for high speed data
acquisition systems the AD524 has an output slew rate of 5 V/µs
and settles in 15 µs to 0.01% for gains of 1 to 100.
As a complete amplifier the AD524 does not require any exter-
nal components for fixed gains of 1, 10, 100 and 1000. For
other gain settings between 1 and 1000 only a single resistor is
required. The AD524 input is fully protected for both power-on
and power-off fault conditions.
The AD524 IC instrumentation amplifier is available in four
different versions of accuracy and operating temperature range.
The economical “A” grade, the low drift “B” grade and lower
drift, higher linearity “C” grade are specified from –25°C to
+85°C. The “S” grade guarantees performance to specification
over the extended temperature range –55°C to +125°C. Devices
are available in 16-lead ceramic DIP and SOIC packages and a
20-terminal leadless chip carrier.
FUNCTIONAL BLOCK DIAGRAM
–INPUT
G = 10
G = 100
G = 1000
RG1
RG2
PROTECTION
4.44k
404
40
+INPUT
PROTECTION
AD524
Vb 20k
20k20k
20k20k
20k
SENSE
VOUT
REFERENCE
PRODUCT HIGHLIGHTS
1. The AD524 has guaranteed low offset voltage, offset voltage
drift and low noise for precision high gain applications.
2. The AD524 is functionally complete with pin programmable
gains of 1, 10, 100 and 1000, and single resistor program-
mable for any gain.
3. Input and output offset nulling terminals are provided for
very high precision applications and to minimize offset volt-
age changes in gain ranging applications.
4. The AD524 is input protected for both power-on and power-
off fault conditions.
5. The AD524 offers superior dynamic performance with a gain
bandwidth product of 25 MHz, full power response of 75 kHz
and a settling time of 15 µs to 0.01% of a 20 V step (G = 100).
REV. E
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 1999


Analog Devices Semiconductor Electronic Components Datasheet

AD524 Datasheet

Precision Instrumentation Amplifier

No Preview Available !

AD524 pdf
AD524–SPECIFICATIONS (@ VS = ؎15 V, RL = 2 kand TA = +25؇C unless otherwise noted)
Model
AD524A
AD524B
AD524C
AD524S
Min Typ Max Min Typ Max Min Typ Max Min Typ Max Units
GAIN
Gain Equation
(External Resistor Gain
Programming)
Gain Range (Pin Programmable)
Gain Error1
G=1
G = 10
G = 100
G = 1000
Nonlinearity
G=1
G = 10,100
G = 1000
Gain vs. Temperature
G=1
G = 10
G = 100
G = 1000
40
,
000
+ 1± 20%
 RG

1 to 1000
؎0.05
؎0.25
؎0.5
±2.0
± 0.01
± 0.01
± 0.01
5
15
35
100
40
,
000
+ 1± 20%
 RG

1 to 1000
40
,
000
+ 1± 20%
 RG

1 to 1000
40
,
000
+ 1± 20%
 RG

1 to 1000
؎0.03
؎0.15
؎0.35
؎1.0
؎0.02
؎0.1
؎0.25
؎0.5
؎0.05
؎0.25
؎0.5
؎2.0
%
%
%
%
± 0.005
± 0.005
± 0.01
± 0.003
± 0.003
± 0.01
± 0.01 %
± 0.01 %
± 0.01 %
5 5 5 ppm/°C
10 10 10 ppm/°C
25 25 25 ppm/°C
50 50 50 ppm/°C
VOLTAGE OFFSET (May be Nulled)
Input Offset Voltage
vs. Temperature
Output Offset Voltage
vs. Temperature
Offset Referred to the
Input vs. Supply
G=1
G = 10
G = 100
G = 1000
70
85
95
100
250
2
5
100
75
95
105
110
100
0.75
3
50
80
100
110
115
50
0.5
2.0
25
75
95
105
110
100 µV
2.0 µV/°C
3.0 mV
50 µV/°C
dB
dB
dB
dB
INPUT CURRENT
Input Bias Current
vs. Temperature
Input Offset Current
vs. Temperature
± 100
± 100
؎50
؎35
± 100
± 100
؎25
؎15
± 100
± 100
؎15
؎10
؎50 nA
± 100
pA/°C
؎35 nA
± 100
pA/°C
INPUT
Input Impedance
Differential Resistance
Differential Capacitance
Common-Mode Resistance
Common-Mode Capacitance
Input Voltage Range
Max Differ. Input Linear (VDL)2
Max Common-Mode Linear (VCM)
Common-Mode Rejection dc to
60 Hz with 1 kSource Imbalance
G=1
G = 10
G = 100
G = 1000
109
10
109
10
± 10
G
12 V –  2 × VD 
70
90
100
110
109
10
109
10
± 10
G
12 V –  2 × VD 
75
95
105
115
109
10
109
10
± 10
G
12 V –  2 × VD 
80
100
110
120
109
10
109
10
± 10
G
12 V –  2 × VD 
70
90
100
110
pF
pF
V
V
dB
dB
dB
dB
OUTPUT RATING
VOUT, RL = 2 k
±10 ±10 ± 10 ± 10 V
DYNAMIC RESPONSE
Small Signal – 3 dB
G=1
1 1 1 1 MHz
G = 10
400 400 400 400 kHz
G = 100
150 150 150 150 kHz
G = 1000
25 25 25 25 kHz
Slew Rate
5.0 5.0 5.0 5.0 V/µs
Settling Time to 0.01%, 20 V Step
G = 1 to 100
15 15 15 15 µs
G = 1000
75 75 75 75 µs
NOISE
Voltage Noise, 1 kHz
R.T.I.
R.T.O.
R.T.I., 0.1 Hz to 10 Hz
G=1
G = 10
G = 100, 1000
Current Noise
0.1 Hz to 10 Hz
7 7 7 7 nV/Hz
90 90 90 90 nVHz
15 15 15 15 µV p-p
2 2 2 2 µV p-p
0.3 0.3 0.3 0.3 µV p-p
60 60 60 60 pA p-p
–2– REV. E


Part Number AD524
Description Precision Instrumentation Amplifier
Maker Analog Devices
Total Page 16 Pages
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