High Bandwidth, Bidirectional
65 V Difference Amplifier
Data Sheet
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FEATURES
±4000 V HBM ESD
Ideal for current shunt applications
High common-mode voltage range
−4 V to +65 V operating
−40 V to +80 V survival
3 MHz bandwidth
<100 ns output propagation delay
Gain: 3 V/V
Wide operating temperature range
Die: −40°C to +150°C
8-lead SOIC: −40°C to +125°C
Adjustable output offset
Available in 8-lead SOIC
Excellent ac and dc performance
10 µV/°C offset drift
10 ppm/°C gain drift
Qualified for automotive applications
APPLICATIONS
High-side current sensing in
DC-to-dc converters
Motor controls
Transmission controls
Diesel-injection controls
Engine management
Suspension controls
Vehicle dynamic controls
FUNCTIONAL BLOCK DIAGRAM
AD8216
8
1
4
2
3
7
5
6
+IN
–IN
NC
NC = NO CONNECT
GND
V+
OUT
V
REF
1
V
REF
2
07062-001
Figure 1.
GENERAL DESCRIPTION
The AD8216 is a single-supply, difference amplifier ideal for
amplifying small differential voltages in the presence of large
common-mode voltages. The operating input common-mode
voltage range extends from −4 V to +65 V. The typical supply
voltage is 5 V. The AD8216 features a 3 MHz bandwidth,
allowing for the input-to-output propagation delay that is
always less than 150 ns. This feature is ideal for applications
monitoring rapidly increasing and decreasing load currents.
The AD8216 is offered in a SOIC package. The operating
temperature range is −40°C to +125°C.
Excellent ac and dc performance over temperature keep errors
in the measurement loop to a minimum. Offset and gain drift
are guaranteed to a maximum of 20 µV/°C and 15 ppm/°C,
respectively.
The output offset can be adjusted from 0.06 V to 4.9 V with a
5 V supply by using the V
REF
1 pin and the V
REF
2 pin. With the
V
REF
1 pin attached to the V+ pin and the V
REF
2 pin attached to
the GND pin, the output is set at half scale. Attaching both V
REF
1
and V
REF
2 to GND causes the output to be unipolar, starting
near ground. Attaching both V
REF
1 and V
REF
2 to V+ causes the
output to be unipolar, starting near V+. Other offsets can be
obtained by applying an external voltage to V
REF
1 and V
REF
2.
