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PDF AD8203 Data sheet ( Hoja de datos )
| Número de pieza | AD8203 | |
| Descripción | Single-Supply Difference Amplifier | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Data Sheet
High Common-Mode Voltage,
Single-Supply Difference Amplifier
AD8203
FEATURES
High common-mode voltage range
−6 V to +30 V at a 5 V supply voltage
Operating temperature range: −40°C to +125°C
Supply voltage range: 3.5 V to 12 V
Low-pass filter (1-pole or 2-pole)
Excellent ac and dc performance
±1 mV voltage offset (8-lead SOIC)
±1 ppm/°C typical gain drift
80 dB CMRR minimum dc to 10 kHz
APPLICATIONS
Transmission control
Diesel injection control
Engine management
Adaptive suspension control
Vehicle dynamics control
GENERAL DESCRIPTION
The AD8203 is a single-supply difference amplifier for amplify-
ing and low-pass filtering small differential voltages in the
presence of a large common-mode voltage (CMV). The input
CMV range extends from −6 V to +30 V at a typical supply
voltage of 5 V.
The AD8203 is available in packaged form. The MSOP and
SOIC packages are specified over a wide temperature range,
from −40°C to +125°C, making the AD8203 well-suited for use
in many automotive platforms.
Automotive platforms demand precision components for better
system control. The AD8203 provides excellent ac and dc
performance keeping errors to a minimum in the user’s system.
Typical offset and gain drift in the SOIC package are 0.3 µV/°C and
1 ppm/°C, respectively. Typical offset and gain drift in the MSOP
package are 2 μV/°C and 1 ppm/°C, respectively. The device also
delivers a minimum CMRR of 80 dB from dc to 10 kHz.
The AD8203 features an externally accessible 100 kΩ resistor at
the output of the Preamp A1, which can be used for low-pass
filter applications and for establishing gains other than 14.
FUNCTIONAL BLOCK DIAGRAMS
+IN 8
–IN 1
200kΩ
NC A1 A2
6 34
100kΩ
G = ×7
+IN
A1
–IN
200kΩ
+VS
7
AD8203
G = ×2
+IN
A2
–IN
10kΩ
5 OUT
10kΩ
NC = NO CONNECT
Figure 1. Functional Block Diagram
2
GND
BATTERY
CLAMP
DIODE
14V
4-TERM
SHUNT
INDUCTIVE
LOAD
5V
+IN +VS NC OUT
AD8203
OUTPUT
POWER
DEVICE
–IN GND A1 A2
COMMON
NC = NO CONNECT
Figure 2. High Line Current Sensor
BATTERY 14V
POWER
DEVICE 5V
+IN +VS NC OUT
OUTPUT
4-TERM
SHUNT
AD8203
–IN GND A1 A2
CLAMP
DIODE
INDUCTIVE
LOAD
COMMON
NC = NO CONNECT
Figure 3. Low Line Current Sensor
Rev. D
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor 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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2004–2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 page  
AD8203
ABSOLUTE MAXIMUM RATINGS
Table 2.
Parameter
Supply Voltage
Transient Input Voltage (400 ms)
Continuous Input Voltage (Common Mode)
Reversed Supply Voltage Protection
Operating Temperature Range
SOIC
MSOP
Storage Temperature
Output Short-Circuit Duration
Lead Temperature Range (Soldering 10 sec)
Rating
12.5 V
44 V
35 V
0.3 V
−40°C to +125°C
−40°C to +125°C
−65°C to +150°C
Indefinite
300°C
Data Sheet
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate
on the human body and test equipment and can discharge without detection. Although this product
features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to
high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid
performance degradation or loss of functionality.
Rev. D | Page 4 of 20
5 Page 
AD8203
14
PACKAGE = SOIC @ –40°C
12
10
8
6
4
2
0
VOS (µV)
Figure 30. VOS Distribution, SOIC, Temperature = −40°C
6
PACKAGE = SOIC
VSUPPLY = 5V
TEMPERATURE RANGE = +25°C TO –40°C
5
4
3
2
1
0
VOS DRIFT (µV/°C)
Figure 31. Offset Drift Distribution, SOIC,
Temperature Range = +25°C to −40°C
6
PACKAGE = SOIC
VSUPPLY = 5V
TEMPERATURE RANGE = 25°C TO 85°C
5
4
3
2
1
0
VOS DRIFT (µV/°C)
Figure 32. Offset Drift Distribution, SOIC,
Temperature Range = 25°C to 85°C
Data Sheet
6
PACKAGE = SOIC
VSUPPLY = 5V
TEMPERATURE RANGE = 25°C TO 125°C
5
4
3
2
1
0
VOS DRIFT (mV/°C)
Figure 33. Offset Drift Distribution, SOIC,
Temperature Range = +25°C to 125°C
9
TEMPERATURE = 25°C
8
7
6
5
4
3
2
1
0
ERROR (%)
Figure 34. Gain Accuracy, SOIC, Temperature = 25°C
9
TEMPERATURE = 125°C
8
7
6
5
4
3
2
1
0
ERROR (%)
Figure 35. Gain Accuracy, SOIC, Temperature = 125°C
Rev. D | Page 10 of 20
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet AD8203.PDF ] | |
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