AD8206_05 Datasheet, PDF (1/12 Pages) Analog Devices – Single-Supply, 42 V System Difference Amplifier

FEATURES
Ideal for current shunt applications
High common-mode voltage range
−2 V to +65 V operating
−5 V to +68 V survival
Gain = 20
Wide operating temperature range
Die: −40°C to +150°C
8-lead SOIC: −40°C to +125°C
Adjustable offset
Available in SOIC and die form
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
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 die and packaged form. The operating
temperature range for the die is 25°C higher (up to 150°C) than
the packaged part to enable the user to apply the AD8206 in
high temperature applications.
Single-Supply, 42 V System
Difference 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
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. 0
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