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AD8224 Datasheet(PDF) 4 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
Parameter
Test Conditions
Min
A Grade
Typ
Max
Unit
G = 1000
RL = 10 kΩ
400
500
ppm
G = 1
RL = 2 kΩ
10
15
ppm
G = 10
RL = 2 kΩ
10
15
ppm
G = 100
RL = 2 kΩ
50
75
ppm
Gain vs. Temperature
G = 1
3
10
ppm/°C
G > 10
−50
ppm/°C
INPUT
Impedance (Pin to Ground)3
104||5
GΩ||pF
Input Operating Voltage Range4
VS = ±2.25 V to ±18 V for dual supplies
−VS − 0.1
+VS − 2
V
Over Temperature
T = −40°C to +85°C
−VS − 0.1
+VS − 2.1
V
OUTPUT
Output Swing
RL = 2 kΩ
−14.3
+14.3
V
Over Temperature
T = −40°C to +85
°C
−14.3
+14.1
V
Output Swing
RL = 10 kΩ
−14.7
+14.7
V
Over Temperature
T = −40°C to +85°C
−14.6
+14.6
V
Short-Circuit Current
15
mA
REFERENCE INPUT
RIN
40
IIN
VIN+, VIN− = 0 V
70
μA
Voltage Range
−VS
+VS
V
Gain to Output
1 ± 0.0001
V/V
POWER SUPPLY (PER AMPLIFIER)
Operating Range
±2.255
±18
V
Quiescent Current
750
μA
Over Temperature
T = −40°C to +85°C
850
μA
TEMPERATURE RANGE
For Specified Performance
−40
+85
°C
Operational6
−40
+125
°C
1 Refers to differential configuration shown in Figure 64.
2 Please refer to Figure 16 and Figure 17 for the relationship between input current and temperature.
3 Differential and common-mode input impedance can be calculated from the pin impedance: ZDIFF = 2(ZPIN); ZCM = ZPIN/2.
4 The AD8224 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.
5 At this supply voltage, ensure that the input common-mode voltage is within the input voltage range specification.
6 The AD8224 is characterized from −40°C to +125°C. See the Typical Performance Characteristics section for expected operation in this temperature range.
Rev. PrB | Page 4 of 27




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