High Bandwidth, Bidirectional
65 V Difference Amplifier
AD8216
FUNCTIONAL BLOCK DIAGRAM
FEATURES
V+
4000 V HBM ESD
6
Ideal for current shunt applications
High common-mode voltage range
−4 V to +65 V operating
−40 V to +80 V survival
+IN
8
5
OUT
1
–IN
3 MHz bandwidth
<100 ns output propagation delay
Gain: 3 V/V
Wide operating temperature range
Die: −40°C to +150°C
7
3
V
1
2
AD8216
REF
V
REF
4
NC
2
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
GND
NC = NO CONNECT
Figure 1.
10 ppm/°C gain drift
APPLICATIONS
High-side current sensing in
DC-to-dc converters
Motor controls
Transmission controls
Diesel-injection controls
Engine management
Suspension controls
Vehicle dynamic controls
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.
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 VREF1 pin and the VREF2 pin. With the
VREF1 pin attached to the V+ pin and the VREF2 pin attached to
the GND pin, the output is set at half scale. Attaching both VREF1
and VREF2 to GND causes the output to be unipolar, starting
near ground. Attaching both VREF1 and VREF2 to V+ causes the
output to be unipolar, starting near V+. Other offsets can be
obtained by applying an external voltage to VREF1 and VREF2.
The AD8216 is offered in a SOIC package. The operating
temperature range is −40°C to +125°C.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. 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 registeredtrademarks arethe property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
www.analog.com
©2007 Analog Devices, Inc. All rights reserved.
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