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AD8220BRMZ Fiches technique(PDF) 5 Page - Analog Devices

No de pièce AD8220BRMZ
Description  JFET Input Instrumentation Amplifier with Rail-to-Rail Output in MSOP Package
Download  28 Pages
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
Logo AD - Analog Devices

AD8220BRMZ Fiches technique(HTML) 5 Page - Analog Devices

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AD8220
Rev. B | Page 5 of 28
A Grade
B Grade
W Grade
Parameter
Test Conditions
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
Unit
POWER SUPPLY
V
Operating Range
±2.254
±18
±2.254
±18
±2.254
±18
μA
Quiescent Current
TA
750
750
750
μA
Over Temperature
TOPR
850
850
1000
μA
TEMPERATURE RANGE
For Specified
Performance
TOPR
−40
+85
−40
+85
−40
+125
°C
1 When the output sinks more than 4 mA, use a 47 pF capacitor in parallel with the load to prevent ringing. Otherwise, use a larger load, such as 10 kΩ.
2 Differential and common-mode input impedance can be calculated from the pin impedance: ZDIFF = 2(ZPIN); ZCM = ZPIN/2.
3 The AD8220 can operate up to a diode drop below the negative supply but the bias current increases sharply. The input voltage range reflects the maximum
allowable voltage where the input bias current is within the specification.
4 At this supply voltage, ensure that the input common-mode voltage is within the input voltage range specification.
VS + = 5 V, VS− = 0 V, VREF = 2.5 V, TA = 25°C, TOPR = −40°C to +85°C for A and B grades. TOPR = −40°C to +125°C for W grade, G = 1,
RL = 2 kΩ1, unless otherwise noted.
Table 2.
A Grade
B Grade
W Grade
Parameter
Test Conditions
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
Unit
COMMON-MODE REJECTION
RATIO (CMRR)
TA for A, B grades,
TOPR for W grade
CMRR DC to 60 Hz with
1 kΩ Source Imbalance
VCM = 0 to 2.5 V
G = 1
78
86
77
dB
G = 10
94
100
92
dB
G = 100
94
100
92
dB
G = 1000
94
100
92
dB
CMRR at 5 kHz
VCM = 0 to 2.5 V
G = 1
74
80
72
dB
G = 10
84
90
80
dB
G = 100
84
90
80
dB
G = 1000
84
90
80
dB
NOISE
RTI noise = √(eni2 +
(eno/G)2), TA
Voltage Noise, 1 kHz
VS = ±2.5 V
Input Voltage Noise, eni
VIN+, VIN− = 0 V, VREF =
0 V
14
14
17
14
nV/√Hz
Output Voltage Noise, eno
VIN+, VIN− = 0 V, VREF =
0 V
90
90
100
90
nV/√Hz
RTI, 0.1 Hz to 10 Hz
G = 1
5
5
5
μV p-p
G = 1000
0.8
0.8
0.8
μV p-p
Current Noise
f = 1 kHz
1
1
1
fA/√Hz
VOLTAGE OFFSET
VOS = VOSI + VOSO/G
Input Offset, VOSI
TA
−300
+300
−200
+200
−300
+300
μV
Average TC
TOPR
−10
+10
−5
+5
−10
10
μV/°C
Output Offset, VOSO
TA
−800
+800
−600
+600
−800
+800
μV
Average TC
TOPR
−10
+10
−5
+5
−10
+10
μV/°C
Offset RTI vs. Supply (PSR)
TA for A, B grades,
TOPR for W grade
G = 1
86
86
80
dB
G = 10
96
100
92
dB
G = 100
96
100
92
dB
G = 1000
96
100
92
dB


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