Precision Instrumentation Amplifier
Data Sheet
AD524
Rev. G Document Feedback
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 registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©1983–2018 Analog Devices, Inc. All rights reserved.
Technical Support www.analog.com
FEATURES
Low noise: 0.3 μV p-p at 0.1 Hz to 10 Hz
Low nonlinearity: 0.003% (G = 1)
High CMRR: 120 dB (G = 1000)
Low offset voltage: 50 μV
Low offset voltage drift: 0.5 μV/°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 carrier available
Available in tape and reel in accordance with EIA-481A
standard
Standard military drawing also available
FUNCTIONAL BLOCK DIAGRAM
AD524
20kΩ
– INPUT
G = 10
+ INPUT
G = 100
G = 1000
4.44kΩ
404Ω
40Ω
PROTECTION
20kΩ
20kΩ
20kΩ
20kΩ
20kΩ
SENSE
REFERENCE
PROTECTION
RG
1
RG
2
1
13
12
11
16
3
2
V
b
OUTPUT
00500-001
Figure 1.
GENERAL 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 nonlinearity of
0.003% at G = 1. The gain bandwidth product of the AD524 is
25 kHz (G = 1000). The output slew rate of 5 V/μs and settling
time of 15 μs to 0.01% for gains of 1 to 100, makes it suitable for
high speed data acquisition systems.
As a complete amplifier, the AD524 does not require any external
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 is available in four
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. e
S grade guarantees performance to specification over the extended
temperature range −55°C to +125°C. e AD524 is available in a
16-lead ceramic DIP, 16-lead SBDIP, 16-lead SOIC wide
packages, and 20-terminal leadless chip carrier.
PRODUCT HIGHLIGHTS
1. Guaranteed low offset voltage, low offset voltage drift, and
low noise for precision high gain applications.
2. Functionally complete with pin programmable gains of 1,
10, 100, and 1000, and single resistor-programmable fo
r
an
y gain.
3. Input and output offset nulling terminals are provided fo
r
high precision applications and to minimize offset voltage
changes in gain ranging applications.
4. Input protected for both power-on and power-off faul
t
co
nditions.
5. Superior dynamic performance with a gain bandwidth
product of 25 MHz, full power response of 75 kHz and
a
s
ettling time of 15 μs to 0.01% of a 20 V step (
G = 100).
Verzeichnis
