Preliminary Technical Data
FEATURES
Ideal for current shunt applications
High common-mode voltage range
鈭? V to +65 V operating
鈭? V to +68 V survival
Gain = 20
Wide operating temperature range
Die: 鈭?0掳C to +150掳C
8-lead SOIC:
鈭?0掳C
to +125掳C
Adjustable offset
Available in SOIC and die form
Single-Supply 42 V System
Difference Amplifier
AD8206
FUNCTIONAL BLOCK DIAGRAM
V+
6
+IN
8
5
OUT
鈥揑N
1
AD8206
7
V
REF
1
3
NC
4
2
V
REF
2
EXCELLENT AC AND DC PERFORMANCE
15 碌V/掳C offset drift
30 ppm/掳C gain drift
80 dB CMRR dc to 20 kHz
NC = NO CONNECT
GND
Figure 1.
APPLICATIONS
High-side current sensing in:
Motor controls
Transmission controls
Diesel injection controls
Engine management
Suspension controls
Vehicle dynamic controls
DC-to-dc converters
GENERAL DESCRIPTION
The AD8206 is a single-supply difference amplifier for amplify-
ing small differential voltages in the presence of large common-
mode voltages. The operating input common-mode voltage
range extends from 鈭? V to +65 V. The typical single-supply
voltage is 5 V.
The AD8206 is offered in die and packaged form. The operating
temperature range for the die is 25掳C higher (up to 150掳C) than
the packaged part to enable the user to apply the AD8206 in
high temperature applications.
Excellent dc performance over temperature keeps errors in the
measurement loop to a minimum. Offset drift is typically less
than 15 碌V/掳C, and gain drift is typically below 30 ppm/掳C.
The output offset can be adjusted from 0.05 V to 4.8 V with a
5 V supply by using the V
REF
1 and V
REF
2 pins. With V
REF
1 at-
tached to the V+ pin, and V
REF
2 attached to the GND pin, the
output is set at half scale. Attaching both pins to GND causes
the output to be unipolar, starting near ground. Attaching both
pins to V+ causes the output to be unipolar starting near V+.
Other offsets can be obtained by applying an external voltage to
the V
REF
1 and V
REF
2 pins.
Rev. PrA
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infringements of patents or other rights of third parties that may result from its use.
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04953-001
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