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PDF AD8236 Data sheet ( Hoja de datos )
| Número de pieza | AD8236 | |
| Descripción | Micropower Instrumentation Amplifier | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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1. AD8236  Hay una vista previa y un enlace de descarga de AD8236 (archivo pdf) en la parte inferior de esta página. Total 20 Páginas | ||
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40 μA Micropower Instrumentation
Amplifier with Zero Crossover Distortion
AD8236
FEATURES
Low power: 40 μA supply current (maximum)
Low input currents
1 pA input bias current
0.5 pA input offset current
High CMRR: 110 dB CMRR, G = 100
Space-saving MSOP
Zero input crossover distortion
Rail-to-rail input and output
Gain set with single resistor
Operates from 1.8 V to 5.5 V
APPLICATIONS
Medical instrumentation
Low-side current sense
Portable devices
CONNECTION DIAGRAM
–IN 1
RG 2
RG 3
+IN 4
8 +VS
7 VOUT
6 REF
5 –VS
AD8236
TOP VIEW
(Not to Scale)
Figure 1.
5.0
4.5
4.0 G = 5
VS = 5V
3.5 VREF = 2.5V
3.0
2.5
2.0
1.5
G=5
1.0 VS = 1.8V
VREF = 0.9V
0.5
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0
–0.5 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
OUTPUT VOLTAGE (V)
Figure 2. Wide Common-Mode Voltage Range vs. Output Voltage
GENERAL DESCRIPTION
The AD8236 is the lowest power instrumentation amplifier
in the industry. It has rail-to-rail outputs and can operate on
voltages as low as 1.8 V. Its 40 μA maximum supply current
makes it an excellent choice in battery-powered applications.
The AD8236’s high input impedance, low input bias current of
1 pA, high CMRR of 110 dB (G = 100), small size, and low power
offer tremendous value. It has a wider common-mode voltage
range than typical three-op-amp instrumentation amplifiers,
making this a great solution for applications that operate on a
single 1.8 V or 3 V supply. An innovative input stage allows for
a wide rail-to-rail input voltage range without the crossover
distortion common in other designs.
The AD8236 is available in an 8-lead MSOP and is specified
over the industrial temperature range of −40°C to +125°C.
Table 1. Instrumentation Amplifiers by Category1
General
Purpose Zero Drift
Military Low
High Speed
Grade Power PGA
AD8220 AD8230
AD620 AD8236 AD8250
AD8221 AD8231
AD621 AD627 AD8251
AD8222 AD8290
AD624 AD623 AD8253
AD8228 AD8293G80 AD524 AD8223
AD8295 AD8293G160 AD526 AD8226
AD8553
AD8556
AD8557
1 See www.analog.com/inamps for the latest instrumentation amplifiers.
Rev. 0
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.
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
©2009 Analog Devices, Inc. All rights reserved.
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
+VS = 1.8 V, −VS = 0 V (GND), VREF = 0.9 V, TA = 25°C, G = 5, RL = 100 kΩ to GND, unless otherwise noted.
Table 3.
Parameter
COMMON-MODE REJECTION RATIO (CMRR)
CMRR DC
G=5
G = 10
G = 100
G = 200
NOISE
Voltage Noise Spectral Density, RTI
RTI, 0.1 Hz to 10 Hz
G=5
G = 200
Current Noise
VOLTAGE OFFSET
Input Offset, VOS
Average Temperature Coefficient (TC)
Offset RTI vs. Supply (PSR)
G=5
G = 10
G = 100
G = 200
INPUT CURRENT
Input Bias Current
Overtemperature
Input Offset Current
Overtemperature
DYNAMIC RESPONSE
Small Signal Bandwidth, –3 dB
G=5
G = 10
G = 100
G = 200
Settling Time 0.01%
G=5
G = 10
G = 100
G = 200
Slew Rate
G = 5 to 100
GAIN
Gain Range
Gain Error
G=5
G = 10
G = 100
G = 200
Test Conditions
VS = ±0.9 V, VREF = 0 V
VCM = −0.6 V to +0.6 V
f = 1 kHz, G = 5
−40°C to +125°C
VS = 1.8 V to 5 V
−40°C to +85°C
−40°C to +125°C
www.DataSheet.co.kr
−40°C to +85°C
−40°C to +125°C
VOUT = 1.4 V step
G = 5 + 420 kΩ/RG
VS = ±0.9 V, VREF = 0 V, VOUT = −0.6 V to +0.6 V
Min Typ
86 94
90 100
100 110
100 110
76
4
4
15
2.5
100 120
110 126
110 130
110 130
1
0.5
23
9
0.8
0.4
143
178
1000
1864
11
5
0.005
0.03
0.06
0.15
AD8236
Max Unit
dB
dB
dB
dB
nV/√Hz
μV p-p
μV p-p
fA/√Hz
3.5 mV
μV/°C
dB
dB
dB
dB
10 pA
100 pA
600 pA
5 pA
50 pA
130 pA
kHz
kHz
kHz
kHz
μs
μs
μs
μs
mV/μs
2001 V/V
0.05 %
0.2 %
0.2 %
0.3 %
Rev. 0 | Page 5 of 20
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
RLOAD = 100kΩ TIED TO GND
RLOAD = 10kΩ TIED TO GND
VS = 5V
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
OUTPUT VOLTAGE (V)
Figure 17. Gain Nonlinearity, G = 5
4.5
TWO CURVES REPRESENTED:
RLOAD = 10kΩ AND 100kΩ TIED TO GND
VS = 5V
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
OUTPUT VOLTAGE (V)
Figure 18. Gain Nonlinearity, G = 10
4.5
TWO CURVES REPRESENTED:
RLOAD = 10kΩ AND 100kΩ TIED TO GND
VS = 5V
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
OUTPUT VOLTAGE (V)
Figure 19. Gain Nonlinearity, G = 200
4.5
AD8236
5.0
4.5
4.0 (0.01V, 4.24V)
(4.98V, 4.737V)
3.5
3.0
2.5
2.0
1.5
1.0
0.5 (0.01V, 0.27V)
(4.98V, 0.767V)
0
–0.5 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
OUTPUT VOLTAGE (V)
Figure 20. Input Common-Mode Voltage Range vs. Output Voltage,
G = 5, VS = 5 V, VREF = 2.5 V
5.0
4.5
4.0 (0.01V, 4.25V)
(4.994V, 4.75V)
3.5
3.0
2.5
2.0
1.5
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1.0
0.5 (0.01V, 0.026V)
(4.994V, 0.076V)
0
–0.5 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
OUTPUT VOLTAGE (V)
Figure 21. Input Common-Mode Voltage Range vs. Output Voltage,
G = 200, VS = 5 V, VREF = 2.5 V
1.8
1.6
(0.0069V, 1.52V)
1.4
(1.78V, 1.704V)
1.2
1.0
0.8
0.6
0.4
0.2 (0.0069V, 0.09V)
(1.78V, 0.274V)
0
–0.2 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
OUTPUT VOLTAGE (V)
Figure 22. Input Common-Mode Voltage Range vs. Output Voltage,
G = 5, VS = 1.8 V, VREF = 0.9 V
Rev. 0 | Page 11 of 20
Datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet AD8236.PDF ] | |
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