AD8206_12 Datasheet, PDF (1/16 Pages) Analog Devices – High Common-Mode Voltage, Bidirectional Current Shunt Amplifier

Data Sheet
FEATURES
Ideal for current shunt applications
High common-mode voltage range
−2 V to +65 V operating
−25 V to +75 V survival
Gain = 20
Wide operating temperature range
−40°C to +125°C for Y grade and WY grade
−40°C to +150°C for WH grade
Bidirectional operation
Available in 8-lead SOIC
Qualified for automotive applications
EXCELLENT AC AND DC PERFORMANCE
15 µV/°C offset drift
30 ppm/°C gain drift
80 dB CMRR dc to 20 kHz
APPLICATIONS
High-side current sensing in
Motor controls
Transmission controls
Diesel-injection controls
Engine management
Suspension controls
Vehicle dynamic controls
DC-to-dc converters
High Common-Mode Voltage,
Bidirectional Current Shunt Amplifier
AD8206
FUNCTIONAL BLOCK DIAGRAM
V+
6
+IN 8
–IN 1
5 OUT
AD8206
7 V_REF1
NC 4
NC = NO CONNECT
2
GND
Figure 1.
3 V_REF2
GENERAL DESCRIPTION
The AD8206 is a single-supply difference amplifier for
amplifying small differential voltages in the presence of large
common-mode voltages. The operating input common-mode
voltage range extends from −2 V to +65 V. The typical single-
supply voltage is 5 V.
The AD8206 is offered in an 8-lead SOIC package. The Y grade
and WY grade models are rated for operation from −40°C to
+125°C. The WH grade is rated from −40°C to +150°C.
Excellent DC performance over temperature keeps errors in the
measurement loop to a minimum. Offset drift is typically less
than 15 µV/°C, and gain drift is typically below 30 ppm/°C.
The output offset can be adjusted from 0.08 V to 4.7 V with
a 5 V supply by using the VREF1 and VREF2 pins. With VREF1
attached to the V+ pin, and VREF2 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 VREF1 and VREF2 pins.
Rev. B
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