AD8210 Datasheet, PDF (1/7 Pages) Analog Devices – High-Side Bi-directional Current Shunt Monitor

Preliminary Technical Data
FEATURES
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
5 µV/°C offset drift
30 ppm/°C gain drift
80 dB CMRR dc to 10 kHz
APPLICATIONS
42V DC/DC Converter Current Sensing
High Side Current Sensing
Motor controls
Transmission controls
Diesel injection controls
Engine management
Suspension controls
Vehicle dynamic controls
GENERAL DESCRIPTION
The AD8210 is a high-side, single-supply, bi-directional current
shunt monitor featuring a wide input common mode voltage
range of -2V to 65V, high bandwidth, set gain of 20, and a typi-
cal supply voltage of 5V.
The AD8210 is offered in die and packaged form. The operat-
ing temperature range for the die is 25°C higher (up to 150°C)
than that of the packaged part to enable the user to apply the
AD8210 in high temperature applications.
Rev. PrA
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However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
High-Side
Bi-directional
Current Shunt Monitor
AD8210
FUNCTIONAL BLOCK DIAGRAM
+
-
Vsupply
-
Is
+
Rs
+ IN
-IN
V+
Vs
AD8210
V Ref 1
LOAD
GND
G=20
V Ref 2
VOUT
Figure 1: Typical Operating Circuit
Excellent AC and DC performance over temperature keeps
errors in the measurement loop to a minimum. Offset drift is
typically below 5uV/ °C, and the Gain drift is typically below
30ppm/°C.
Bi-directional current measurement is achieved by offsetting
the output between 0.05V and 4.8V with a 5V supply. With the
VREF 2 pin connected to the V+ pin, and VREF1 pin connected to
GND pin, the output is set at half scale. Attaching both VREF
pins to GND causes the output to be unipolar, starting near
ground. Attaching both VREF pins to V+ cause the output to be
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