AD8226ARMZ-RL Analog Devices Inc, AD8226ARMZ-RL Datasheet

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AD8226ARMZ-RL

Manufacturer Part Number
AD8226ARMZ-RL
Description
Precision InAmp
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD8226ARMZ-RL

Amplifier Type
Instrumentation
Number Of Circuits
1
Output Type
Rail-to-Rail
Slew Rate
0.6 V/µs
-3db Bandwidth
1.5MHz
Current - Input Bias
20nA
Voltage - Input Offset
200µV
Current - Supply
350µA
Current - Output / Channel
13mA
Voltage - Supply, Single/dual (±)
2.2 V ~ 36 V, ±1.35 V ~ 18 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Gain Bandwidth Product
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
FEATURES
Gain set with 1 external resistor
Input voltage goes below ground
Inputs protected beyond supplies
Very wide power supply range
Bandwidth (G = 1): 1.5 MHz
CMRR (G = 1): 90 dB minimum for BR models
Input noise: 22 nV/√Hz
Typical supply current: 350 µA
Specified temperature: −40°C to +125°C
8-lead SOIC and MSOP packages
APPLICATIONS
Industrial process controls
Bridge amplifiers
Medical instrumentation
Portable data acquisition
Multichannel systems
GENERAL DESCRIPTION
The AD8226 is a low cost, wide supply range instrumentation
amplifier that requires only one external resistor to set any gain
between 1 and 1000.
The AD8226 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 AD8226 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 AD8226 inputs are designed to connect to real-
world sensors. In addition to its wide operating range, the
Rev. B
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 registered trademarks are the property of their respective owners.
Gain range: 1 to 1000
Single supply: 2.2 V to 36 V
Dual supplies: ±1.35 V to ±18 V
Output Instrumentation Amplifier
Wide Supply Range, Rail-to-Rail
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
Table 1. Instrumentation Amplifiers by Category
General
Purpose
AD8220
AD8221
AD8222
AD8224
AD8228
AD8295
1
AD8226 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 AD8226 is perfect for multichannel, space-constrained
industrial applications. Unlike other low cost, low power
instrumentation amplifiers, the AD8226 is designed with
a minimum gain of 1 and can easily handle ±10 V signals.
With its MSOP package and 125°C temperature rating, the
AD8226 thrives in tightly packed, zero airflow designs.
The AD8226 is available in 8-lead MSOP and SOIC packages,
and is fully specified for −40°C to +125°C operation.
For a device with a similar package and performance as the
AD8226 but with gain settable from 5 to 1000, consider using
the AD8227.
Visit
www.analog.com
Zero
Drift
AD8231
AD8290
AD8293
AD8553
AD8556
AD8557
–IN
+IN
R
R
©2009–2011 Analog Devices, Inc. All rights reserved.
G
G
PIN CONFIGURATION
for the latest instrumentation amplifiers.
1
2
3
4
Military
Grade
AD620
AD621
AD524
AD526
AD624
(Not to Scale)
AD8226
TOP VIEW
Figure 1.
Low
Power
AD627
AD623
AD8223
AD8226
AD8227
AD8235/
AD8236
8
7
6
5
+V
V
REF
–V
OUT
S
S
AD8226
www.analog.com
High Speed
PGA
AD8250
AD8251
AD8253
1

Related parts for AD8226ARMZ-RL

AD8226ARMZ-RL Summary of contents

Page 1

FEATURES Gain set with 1 external resistor Gain range 1000 Input voltage goes below ground Inputs protected beyond supplies Very wide power supply range Single supply: 2 Dual supplies: ±1. ±18 V ...

Page 2

AD8226 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Pin Configuration ............................................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Absolute Maximum Ratings ............................................................ 7 Thermal Resistance ...................................................................... 7 ESD Caution .................................................................................. 7 Pin Configuration ...

Page 3

SPECIFICATIONS +V = +15 V, −V = − REF Table 2. Parameter COMMON-MODE REJECTION RATIO (CMRR) CMRR with 100 G ...

Page 4

AD8226 Parameter Settling Time 0.01 100 G = 1000 Slew Rate GAIN Gain Range Gain Error 1000 Gain Nonlinearity ...

Page 5

V, − 25° REF A Table 3. Parameter COMMON-MODE REJECTION RATIO (CMRR) CMRR with ...

Page 6

AD8226 Parameter Settling Time 0.01 100 G = 1000 Slew Rate GAIN Gain Range Gain Error 1000 Gain vs. Temperature ...

Page 7

ABSOLUTE MAXIMUM RATINGS Table 4. Parameter Supply Voltage Output Short-Circuit Current Maximum Voltage at −IN or +IN Minimum Voltage at −IN or +IN REF Voltage Storage Temperature Range Specified Temperature Range Maximum Junction Temperature ESD Human Body Model Charge Device ...

Page 8

AD8226 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 6. Pin Function Descriptions Pin No. Mnemonic Description 1 −IN Negative Input Gain-Setting Pins. Place a gain resistor between these two pins +IN Positive Input. 5 −V Negative ...

Page 9

TYPICAL PERFORMANCE CHARACTERISTICS T = 25° ± kΩ, unless otherwise noted 160 140 120 100 –900 –600 –300 0 300 V @ ±15V (µV) OSO Figure 3. ...

Page 10

AD8226 2.5 +0.02V, +2.0V +1.35V, +1.9V 2.0 1.5 +0.02V, +1.3V 1 +2.4V, +0.8V REF 0.5 +0.02V, +0.3V 0 –0.5 +1.35V, –0.4V +0.02V, –0.4V –1.0 –0.5 0 0.5 1.0 1.5 OUTPUT VOLTAGE (V) Figure 9. Input Common-Mode Voltage ...

Page 11

V = ±12V S –5 +11.95V, –6.4V –11.95V, –6.4V –10 0V, –12.4V –14.96V, –7.9V –15 0V, –15.4V –20 5 –20 –15 –10 –5 0 OUTPUT ...

Page 12

AD8226 –0.15V –0.5 0 0.5 1.0 1.5 2.0 2.5 COMMON-MODE VOLTAGE (V) Figure 21. Input Bias Current vs. Common-Mode Voltage –15.13V 45 40 ...

Page 13

GAIN = 1000 140 GAIN = 100 GAIN = 10 120 GAIN = 1 100 0 100 1k FREQUENCY (Hz) Figure 27. CMRR vs. Frequency, RTI 120 GAIN = 100 GAIN = ...

Page 14

AD8226 +V S –40°C +25°C +85°C –0.2 –0.4 –0.6 –0.8 –V S –0.2 –0.4 –0.6 –0 SUPPLY VOLTAGE (±V Figure 33. Input Voltage Limit vs. Supply Voltage +V S –0.1 –0.2 –40°C +25°C –0.3 ...

Page 15

–2 –4 –6 –8 –10 –8 –6 –4 – OUTPUT VOLTAGE (V) Figure 39. Gain Nonlinearity 10 100 ...

Page 16

AD8226 1.5pA/DIV Figure 45. 0 Current Noise ±15V + 100 1k 10k FREQUENCY (Hz) Figure 46. Large-Signal Frequency Response ...

Page 17

Figure 51. Small-Signal Response kΩ 20mV/DIV Figure 52. Small-Signal Response 10 kΩ 4µs/DIV 20mV/DIV Figure 53. Small-Signal Response 100 100 ...

Page 18

AD8226 NO LOAD R = 47pF 100pF 147pF L 20mV/DIV Figure 55. Small-Signal Response with Various Capacitive Loads ∞ SETTLED TO 0.001% 20 SETTLED ...

Page 19

THEORY OF OPERATION NODE 3 ESD AND +IN OVERVOLTAGE Q1 PROTECTION R B ARCHITECTURE The AD8226 is based on the classic 3-op-amp topology. This topology has two stages: a preamplifier to provide differential amplification, followed by a difference amplifier to ...

Page 20

AD8226 REFERENCE TERMINAL The output voltage of the AD8226 is developed with respect to the potential on the reference terminal. This is useful when the output signal needs to be offset to a precise midsupply level. For example, a voltage ...

Page 21

Common-Mode Rejection Ratio Over Frequency Poor layout can cause some of the common-mode signals to be converted to differential signals before reaching the in-amp. Such conversions occur when one input path has a frequency response that is different from the ...

Page 22

AD8226 INPUT PROTECTION The AD8226 has very robust inputs and typically does not need additional input protection. Input voltages can from the opposite supply rail. For example, with positive supply and a ...

Page 23

APPLICATIONS INFORMATION DIFFERENTIAL DRIVE +IN AD8226 –IN REF R – OP AMP R RECOMMENDED OP AMPS: AD8515, AD8641, AD820. RECOMMENDED R VALUES: 5kΩ to 20kΩ. Figure 64. Differential Output Using an Op Amp Figure 64 shows how to configure the ...

Page 24

AD8226 PRECISION STRAIN GAGE The low offset and high CMRR over frequency of the AD8226 make it an excellent candidate for performing bridge measure- ments. The bridge can be connected directly to the inputs of the amplifier (see Figure 65). ...

Page 25

... IDENTIFIER 0.25 (0.0098) 0.10 (0.0040) COPLANARITY ORDERING GUIDE 1 Model Temperature Range AD8226ARMZ −40°C to +125°C AD8226ARMZ-RL −40°C to +125°C AD8226ARMZ-R7 −40°C to +125°C AD8226ARZ −40°C to +125°C AD8226ARZ-RL −40°C to +125°C AD8226ARZ-R7 −40°C to +125°C AD8226BRMZ − ...

Page 26

AD8226 NOTES Rev Page ...

Page 27

NOTES Rev Page AD8226 ...

Page 28

AD8226 NOTES ©2009–2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D07036-0-3/11(B) Rev Page ...

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