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AD8224 Datasheet(PDF) 6 Page - Analog Devices

Part No. AD8224
Description  Precision, Dual-Channel, JFET Input Rail-to-Rail Instrumentation Amplifier
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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AD8224
Preliminary Technical Data
VS + = 5 V, VS− = 0 V, VREF = 2.5 V, TA = +25°C, G = 1, RL = 2 kΩ, unless otherwise noted.
Table 5. Single-Ended and Differential1 Output Configuration
Parameter
Test Conditions
Min
A Grade
Typ
Max
Unit
COMMON-MODE REJECTION RATIO (CMRR)
CMRR DC to 60 Hz with 1 kΩ Source Imbalance
VCM
= 0 to 2.5 V
G = 1
78
dB
G = 10
94
dB
G = 100
94
dB
G = 1000
94
dB
CMRR at 5 kHz
G = 1
74
dB
G = 10
84
dB
G = 100
84
dB
G = 1000
84
dB
NOISE
RTI noise = √(eni2 + (eno/G)2)
Voltage Noise, 1 kHz
Input Voltage Noise, eni
VIN+, VIN− = 0 V, VREF = 0 V
14
nV√Hz
Output Voltage Noise, eno
VIN+, VIN− = 0 V, VREF = 0 V
90
nV√Hz
RTI, 0.1 Hz to 10 Hz
G = 1
5
μV p-p
G = 1000
0.8
μV p-p
Current Noise
f = 1 kHz
1
fA/√Hz
VOLTAGE OFFSET
RTI VOS = (VOSI) + (VOSO/G)
Input Offset, VOSI
300
μV
Average TC
T = −40°C to +85°C
10
μV/°C
Output Offset, VOSO
800
μV
Average TC
T = −40°C to +85°C
10
μV/°C
Offset RTI vs. Supply (PSR)
G = 1
86
dB
G = 10
96
dB
G = 100
96
dB
G = 1000
96
dB
INPUT CURRENT (PER CHANNEL)
Input Bias Current
25
pA
Over Temperature2
T = −40°C to +85°C
300
pA
Input Offset Current
2
pA
Over Temperature2
T = −40°C to +85°C
5
pA
GAIN
G = 1 + (49.4 kΩ/RG)
Gain Range
1
1000
V/V
Gain Error
VOUT = 0.3 V to 2.9 V for G = 1
VOUT = 0.3 V to 3.8 V for G > 1
G = 1
0.06
%
G = 10
0.3
%
G = 100
0.3
%
G = 1000
0.3
%
Nonlinearity
VOUT = 0.3 V to 2.9 V for G = 1
VOUT = 0.3 V to 3.8 V for G > 1
G = 1
RL = 10 kΩ
35
50
ppm
G = 10
RL = 10 kΩ
35
50
ppm
G = 100
RL = 10 kΩ
50
75
ppm
Rev. PrB | Page 6 of 27




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