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AD526 Datenblatt(PDF) 1 Page - Analog Devices

Teilenummer AD526
Bauteilbeschribung  Wide Supply Range, Rail-to-Rail Output Instrumentation Amplifier
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Hersteller  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD526 Datenblatt(HTML) 1 Page - Analog Devices

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Wide Supply Range, Rail-to-Rail
Output Instrumentation Amplifier
Preliminary Technical Data
AD8426
Rev. PrD
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalog Devices foritsuse,nor for anyinfringements ofpatents orother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.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
www.analog.com
Fax: 781.461.3113
©2011 Analog Devices, Inc. All rights reserved.
FEATURES
2 channels in a small, 4 mm × 4 mm LFCSP
LFCSP package has no metal pad
More routing room
No current leakage to pad
Gain set with 1 external resistor
Gain range: 1 to 1000
Input voltage goes below ground
Inputs protected beyond supplies
Very wide power supply range
Single supply: 2.2 V to 36 V
Dual supply: ±1.35 V to ±18 V
Bandwidth (G = 1): 1.5 MHz
CMRR (G = 1): 80 dB minimum
Input noise: 22 nV/√Hz
Typical supply current (per amp): 350 μA
Specified temperature range: −40°C to +125°C
APPLICATIONS
Industrial process controls
Bridge amplifiers
Medical instrumentation
Portable data acquisition
Multichannel systems
PIN CONFIGURATION
1
2
3
4
12
11
10
9
5
678
13
14
15
16
–IN1
+IN1
RG1
RG1
AD8426
–IN2
+IN2
RG2
RG2
Figure 1.
Table 1. Instrumentation Amplifiers by Category1
General
Purpose
Zero
Drift
Military
Grade
Low
Power
High Speed
PGA
AD8220
AD8231
AD620
AD627
AD8250
AD8221
AD8290
AD621
AD623
AD8251
AD8222
AD8293
AD524
AD8235
AD8253
AD8224
AD8553
AD526
AD8236
AD8228
AD8556
AD624
AD8426
AD8295
AD8557
AD8226
AD8227
1 See www.analog.com for the latest instrumentation amplifiers.
GENERAL DESCRIPTION
The AD8426 is a dual channel, low cost, wide supply range
instrumentation amplifier that requires only one external
resistor to set any gain from 1 to 1000.
The AD8426 is designed to work with a variety of signal
voltages. A wide input range and rail-to-rail output allow the
signal to make full use of the supply rails. Because the input
range also includes the ability to go below the negative supply,
small signals near ground can be amplified without requiring
dual supplies. The AD8426 operates on supplies ranging from
±1.35 V to ±18 V for dual supplies and 2.2 V to 36 V for single
supply.
The robust AD8426 inputs are designed to connect to real-
world sensors. In addition to its wide operating range, the
AD8426 can handle voltages beyond the rails. For example,
with a ±5 V supply, the part is guaranteed to withstand ±35 V
at the input with no damage. Minimum as well as maximum input
bias currents are specified to facilitate open-wire detection.
The AD8426 is designed to make PCB routing easy and
efficient. The two amplifiers are arranged in a logical way
so that typical application circuits have short routes and few
vias. Unlike most chip scale packages, the AD8426 does not
have an exposed metal pad on the back of the part, which frees
additional space for routing and vias. The AD8426 offers two in
amps in the equivalent board space of a typical MSOP package.
The AD8426 is ideal for multichannel, space-constrained
industrial applications. Unlike other low cost, low power
instrumentation amplifiers, the AD8426 is designed with a
minimum gain of 1 and can easily handle ±10 V signals. With
its space-saving LFCSP package and 125°C temperature rating,
the AD8426 thrives in tightly packed, zero airflow designs.
The AD8226 is the single channel version of the AD8426.


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