AD8222HACPZ-RL Analog Devices Inc, AD8222HACPZ-RL Datasheet - Page 17
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AD8222HACPZ-RL
Manufacturer Part Number
AD8222HACPZ-RL
Description
Hidden Paddle Dual Precision InAmp
Manufacturer
Analog Devices Inc
Datasheet
1.AD8222BCPZ-R7.pdf
(24 pages)
Specifications of AD8222HACPZ-RL
Amplifier Type
Instrumentation
Number Of Circuits
2
Slew Rate
2 V/µs
-3db Bandwidth
1.2MHz
Current - Input Bias
500pA
Voltage - Input Offset
120µV
Current - Supply
900µA
Current - Output / Channel
18mA
Voltage - Supply, Single/dual (±)
4.6 V ~ 36 V, ±2.3 V ~ 18 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
16-LFCSP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Output Type
-
Gain Bandwidth Product
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
both pins should be connected for specified performance and
optimum reliability.
The AD8222 should be decoupled with 0.1 μF bypass capacitors,
one for each supply. The positive supply decoupling capacitor
should be placed near Pin 16, and the negative supply decoupl-
ing capacitor should be placed near Pin 8. Each supply should
also be decoupled with a 10 μF tantalum capacitor. The tantalum
capacitor can be placed further away from the AD8222 and can
generally be shared by other precision integrated circuits. Figure
46 shows an example layout.
R
G1
0.1µF
1
2
3
4
Figure 46. Example Layout
AD8222
16
5
15
6
14
7
0.1µF
13
8
12
11
10
9
R
G2
Rev. A | Page 17 of 24
INPUT BIAS CURRENT RETURN PATH
The input bias current of the AD8222 must have a return path
to common. When the source, such as a thermocouple, cannot
provide a return current path, one should be created, as shown
in Figure 47.
CAPACITIVELY COUPLED
C
C
THERMOCOUPLE
TRANSFORMER
INCORRECT
AD8222
+V
AD8222
–V
AD8222
+V
–V
+V
–V
S
S
S
S
S
S
REF
Figure 47. Creating an I
REF
REF
f
HIGH-PASS
=
CAPACITIVELY COUPLED
2πRC
1
10MΩ
BIAS
C
C
Path
R
R
THERMOCOUPLE
TRANSFORMER
CORRECT
AD8222
AD8222
AD8222
+V
+V
+V
–V
–V
–V
AD8222
S
S
S
S
S
S
REF
REF
REF