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AD8202 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer AD8202
Beschreibung Single-Supply Difference Amplifier
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 21 Seiten
AD8202 Datasheet, Funktion
Data Sheet
High Common-Mode Voltage,
Single-Supply Difference Amplifier
AD8202
FEATURES
High common-mode voltage range
−6 V to +28 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
±1 ppm/°C typical gain drift
80 dB CMRR min dc to 10 kHz
Qualified for automotive applications
APPLICATIONS
Transmission control
Diesel injection control
Engine management
Adaptive suspension control
Vehicle dynamics control
GENERAL DESCRIPTION
The AD8202 is a single-supply difference amplifier for amplifying
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 +28 V at a typical supply voltage of 5 V.
The AD8202 is available in die and packaged form. The MSOP
and SOIC packages are specified over a wide temperature range,
from −40°C to +125°C, making the AD8202 well-suited for use
in many automotive platforms.
Automotive platforms demand precision components for
better system control. The AD8202 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, respec-
tively. The device also delivers a minimum CMRR of 80 dB
from dc to 10 kHz.
The AD8202 features an externally accessible 100 kΩ resistor
at the output of the Preamp A1 that can be used for low-pass
filter applications and for establishing gains other than 20.
FUNCTIONAL BLOCK DIAGRAMS
+IN 8
–IN 1
200k
NC A1 A2
7 34
100k
G = ×10
+IN
A1
–IN
200k
+VS
6
AD8202
G = ×2
+IN
A2
–IN
10k
5 OUT
10k
NC = NO CONNECT
Figure 1. SOIC (R) Package Die Form
2
GND
BATTERY
CLAMP
DIODE
14V
4-TERM
SHUNT
INDUCTIVE
LOAD
5V
+IN NC +VS OUT
AD8202
OUTPUT
POWER
DEVICE
–IN GND A1 A2
BATTERY
COMMON
NC = NO CONNECT
Figure 2. High Line Current Sensor
POWER
DEVICE
5V
OUTPUT
+IN NC +VS OUT
14V
4-TERM
SHUNT
AD8202
–IN GND A1 A2
CLAMP
DIODE
INDUCTIVE
LOAD
COMMON
NC = NO CONNECT
Figure 3. Low Line Current Sensor
Rev. H
Document Feedback
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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






AD8202 Datasheet, Funktion
Data Sheet
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
AD8202
Table 3. Pin Function Descriptions
Pin No.
Mnemonic
X
1 −IN
−205
2 GND
−413
3 A1
−413
4 A2
−309
5 OUT
+272
6 +VS
+417
7 NC
N/A1
8 +IN
+205
1 N/A = not applicable.
–IN 1
8 +IN
GND 2 AD8202 7 NC
A1 3 TOP VIEW 6 +VS
A2 4 (Not to Scale) 5 OUT
NC = NO CONNECT
Figure 4. Pin Configuration
Y
+409
+285
−229
−410
−410
−121
N/A1
+409
1.180
1
2
8
7
3
4
6
5
1.165
(CIRCUIT SIDE)
Figure 5. Metallization Photograph
Rev. H | Page 5 of 20

6 Page









AD8202 pdf, datenblatt
Data Sheet
50
TEMPERATURE = –40°C
45
40
35
30
25
20
15
10
5
0
ERROR (%)
Figure 36. Gain Accuracy, SOIC, Temperature = −40°C
40
VSUPPLY = 5V
35
TEMPERATURE RANGE =
+25°C TO –40°C
30
25
20
15
10
5
0
GAIN DRIFT (PPM/°C)
Figure 37. Gain Drift Distribution, SOIC,
Temperature Range = +25°C to −40°C
AD8202
25
VSUPPLY = 5V
TEMPERATURE RANGE =
25°C TO 85°C
20
15
10
5
0
GAIN DRIFT (PPM/°C)
Figure 38. Gain Drift Distribution, SOIC,
Temperature Range = 25°C to 85°C
45
VSUPPLY = 5V
40 TEMPERATURE RANGE =
25°C TO 125°C
35
30
25
20
15
10
5
0
GAIN DRIFT (PPM/°C)
Figure 39. Gain Drift Distribution, SOIC,
Temperature Range = 25°C to 125°C
Rev. H | Page 11 of 20

12 Page





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