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AD626 데이터시트(HTML) 1 Page - Analog Devices

부품명 AD626
상세내용  Low Cost, Single Supply Differential Amplifier
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제조사  AD [Analog Devices]
홈페이지  http://www.analog.com
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AD626 데이터시트(HTML) 1 Page - Analog Devices

 
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CONNECTION DIAGRAM
8-Lead Plastic Mini-DIP (N)
and SOIC (SO) Packages
1
2
3
4
8
7
6
5
AD626
1/6
200k
–IN
ANALOG
GND
–VS
FILTER
+IN
G = 100
OUT
+VS
100k
G = 2
G = 30
200k
REV. C
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
Low Cost, Single Supply
Differential Amplifier
AD626
FEATURES
Pin Selectable Gains of 10 and 100
True Single Supply Operation
Single Supply Range of +2.4 V to +10 V
Dual Supply Range of
1.2 V to
6 V
Wide Output Voltage Range of 30 mV to 4.7 V
Optional Low-Pass Filtering
Excellent DC Performance
Low Input Offset Voltage: 500
V max
Large Common-Mode Range: 0 V to +54 V
Low Power: 1.2 mW (VS = +5 V)
Good CMR of 90 dB typ
AC Performance
Fast Settling Time: 24
s (0.01%)
Includes Input Protection
Series Resistive Inputs (RIN = 200 k )
RFI Filters Included
Allows 50 V Continuous Overload
APPLICATIONS
Current Sensing
Interface for Pressure Transducers, Position Indicators,
Strain Gages, and Other Low Level Signal Sources
PRODUCT DESCRIPTION
The AD626 is a low cost, true single supply differential ampli-
fier designed for amplifying and low-pass filtering small differen-
tial voltages from sources having a large common-mode voltage.
The AD626 can operate from either a single supply of +2.4 V to
+10 V, or dual supplies of
±1.2 V to ±6 V. The input common-
mode range of this amplifier is equal to 6 (+VS – 1 V) which
provides a +24 V CMR while operating from a +5 V supply.
Furthermore, the AD626 features a CMR of 90 dB typ.
The amplifier’s inputs are protected against continuous overload
of up to 50 V, and RFI filters are included in the attenuator
network. The output range is +0.03 V to +4.9 V using a +5 V
supply. The amplifier provides a preset gain of 10, but gains be-
tween 10 to 100 can be easily configured with an external resis-
tor. Furthermore, a gain of 100 is available by connecting the G
= 100 pin to analog ground. The AD626 also offers low-pass
filter capability by connecting a capacitor between the filter pin
and analog ground.
The AD626A and AD626B operate over the industrial tempera-
ture range of –40
°C to +85°C. The AD626 is available in two
8-lead packages: a plastic mini-DIP and SOIC.
160
0
1M
60
20
1
40
0.1
140
80
100
100k
10k
1k
100
10
FREQUENCY – Hz
G = 10,100
VS = +5V
G = 100
VS = 5V
G = 10
VS = 5V
Common-Mode Rejection vs. Frequency
25
0
5
15
5
2
10
1
20
4
3
POWER SUPPLY VOLTAGE –
Volts
VCM FOR SINGLE
AND DUAL SUPPLIES
VCM FOR DUAL
SUPPLIES ONLY
Input Common-Mode Range vs. Supply
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 1999


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