REV.0
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a
AD8200
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., 2000
High Common-Mode Voltage, Single Supply
Difference Amplifier
FUNCTIONAL BLOCK DIAGRAM
SOIC (R) Package
DIE Form
FEATURES
High Common-Mode Voltage Range –2V to +24V at a
5 V Supply Voltage
Operating Temperature Range
Die: –40H11543C to +150H11543C
8-Lead SOIC: –40H11543C to +125H11543C
Supply Voltage Range: 4.7 V to 12 V
Low-Pass Filter (One Pole or Two Pole)
EXCELLENT AC AND DC PERFORMANCE
15 H9262V/H11543C Max Offset Drift
20 ppm/H11543C Max Gain Drift
80 dB CMRR Min DC to 10 kHz
PLATFORMS
Transmission Control
Diesel Injection Control
Engine Management
Semi-Active Suspension Control
Vehicle Dynamics Control
GENERAL DESCRIPTION
The AD8200 is a single-supply difference amplifier for amplifying
and low-pass filtering small differential voltages in the presence
of a large common-mode voltage. The input CMV range extends
from –2 V to +24 V at a typical supply voltage of 5 V.
The AD8200 is offered in die and packaged form. Both package
options are specified over wide temperature ranges, making the
AD8200 well suited for use in many automotive platforms. The
SOIC package is specified over a temperature range of –40°C to
+125°C. The die is specified from –40°C to +150°C.
–IN GND A1 A2
+IN NC +V
S
OUT
AD8200
5V
OUTPUT
INDUCTIVE
LOAD
POWER
DEVICE
4 TERM
SHUNT
CLAMP
DIODE
BATTERY 14V
COMMON NC = NO CONNECT
Figure 1. High-Line Current Sensor
Automotive platforms demand precision components for better
system control. The AD8200 provides excellent ac and dc per-
formance that keeps errors to a minimum in the user’s system.
Typical offset and gain drift in the SOIC package are 6 µV/°C
and 10 ppm/°C, respectively. The device also delivers a mini-
mum CMRR of 80 dB from dc to 10 kHz.
The AD8200 features an externally accessible 100 kΩ resistor at
the output of the preamp A1, which can be used for low-pass
filter applications, and for establishing gains other than 20.
–IN GND A1 A2
+IN NC +V
S
OUT
AD8200
5V
OUTPUT
INDUCTIVE
LOAD
4 TERM
SHUNT
CLAMP
DIODE
BATTERY 14V
POWER
DEVICE
COMMON NC = NO CONNECT
Figure 2. Low-Line Current Sensor
A1
+IN
–IN
200kH9024200kH9024
100kH9024
A2
+IN
–IN
G = X10 G = X2
AD8200
10kH9024
10kH9024
+IN
–IN
OUT
GND
NC A1 A2 +V
S
NC = NO CONNECT