AD8212 Datasheet, PDF (1/8 Pages) Analog Devices – High Voltage Current Shunt Monitor

Preliminary Technical Data
FEATURES
High common-mode voltage range
7 V to +65 V operating (no outside pass transistor)
7 V to >500 V survival (with outside pass transistor)
Adjustable gain
Bidirectional current measurement
Wide operating temperature range
Die: −40°C to +150°C
8-lead SOIC: −40°C to +125°C
Available in SOIC and die form
APPLICATIONS
High-side current sensing
Motor controls
Battery monitoring
Hybrid vehicle control
Diesel injection controls
Vehicle dynamic controls
Dc-to-dc converters
GENERAL DESCRIPTION
The AD8212 is a self-biased current sense amplifier for level
shifting and amplifying small differential voltages in the
presence of common mode voltages exceeding 500 V¹. The
AD8212 offers excellent accuracy and programmable gain
which can be set with a single resistor, making it ideal to use in
industrial, automotive , and consumer applications.
The AD8212 is offered in die and packaged form. The operating
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
AD8212 in high temperature applications.
Excellent AC and DC performance over temperature keep
errors in the measurement loop to a minimum. Offset drift is
typically below 5 uV/ °C, and the gain drift is typically below
50 ppm/°C.
High Voltage
Current Shunt Monitor
AD8212
FUNCTIONAL BLOCK DIAGRAM
V_PLUS
–
I_S
+
R_S
+IN
–IN
LOAD
COM
AD8212
OFFSET
99kΩ
IOUT
ALPHA
BIAS
R_BIAS
Figure 1.
R_OUT
1 _{Depending upon Vce breakdown voltage of pass transistor}
Rev. PrA
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