Datasheet

A
1
A
2
A
3
7
50 kW10 kW
50 kW10 kW
8
5
4
3
2
1
-IN
+IN
R
G
V+
V-
Device
G = 5 +
80 kW
R
G
6
8 kW
8 kW
Load
V = G (V´ V )-
O IN+ IN-
0.1 Fm
0.1 Fm
+
-
V
O
REF
R
(1)
S
R
(1)
S
INA827
www.ti.com SBOS631A –JUNE 2012–REVISED JULY 2013
APPLICATION INFORMATION
Figure 54 shows the basic connections required for device operation. Good layout practice mandates that bypass
capacitors are placed as close to the device pins as possible.
The INA827 output is referred to the output reference (REF) terminal, which is normally grounded. This
connection must be low-impedance to assure good common-mode rejection. Although 5 Ω or less of stray
resistance can be tolerated while maintaining specified CMRR, small stray resistances of tens of ohms in series
with the REF pin can cause noticeable degradation in CMRR.
(1) This resistor is optional if the input voltage remains above [(V–) – 2 V] or if the signal source current drive capability is limited to less than
3.5 mA. See the Input Protection section for more details.
Figure 54. Basic Connections
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Product Folder Links: INA827