AD8200_03 Datasheet, PDF (1/12 Pages) Analog Devices – High Common-Mode Voltage, Single-Supply Difference Amplifier

High Common-Mode Voltage, Single-Supply
Difference Amplifier
AD8200
FEATURES
High Common-Mode Voltage Range –2 V to +24 V at a
5 V Supply Voltage
Operating Temperature Range
Die: –40؇C to +150؇C
Supply Voltage Range: 4.7 V to 12 V
Low-Pass Filter (One Pole or Two Pole)
EXCELLENT AC AND DC PERFORMANCE
؎1 mV Voltage Offset
؎10 ppm/؇C Typ Gain Drift
80 dB CMRR Min DC to 10 kHz
PLATFORMS
Transmission Control
Diesel Injection Control
Engine Management
Adaptive Suspension Control
Vehicle Dynamics Control
FUNCTIONAL BLOCK DIAGRAM
SOIC (R) Package
Die Form
+IN
–IN
200k⍀
NC
A1 A2
+V_S
100k⍀
G =؋10
+IN
A1
–IN
200k⍀
AD8200
G =؋2
+IN
A2
–IN
10k⍀
OUT
10k⍀
NC = NO CONNECT
GND
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.
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.
BATTERY
CLAMP
DIODE
14V
4 TERM
SHUNT
INDUCTIVE
LOAD
5V
+IN NC +V_S OUT
AD8200
OUTPUT
POWER
DEVICE
–IN GND A1 A2
COMMON
NC = NO CONNECT
Figure 1. High Line Current Sensor
BATTERY 14V
POWER
DEVICE
5V
+IN NC +V_S OUT
OUTPUT
4 TERM
SHUNT
AD8200
CLAMP
DIODE
–IN GND A1 A2
INDUCTIVE
LOAD
COMMON
NC = NO CONNECT
Figure 2. Low Line Current Sensor
REV. B
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