AD8222ACPZ-RL Analog Devices Inc, AD8222ACPZ-RL Datasheet - Page 17

• Manufacturer Part Number: AD8222ACPZ-RL
• Description: IC,Instrumentation Amplifier,DUAL,LLCC,16PIN,PLASTIC
• Manufacturer: Analog Devices Inc

Specifications of AD8222ACPZ-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