Datasheet
+IN
ADS8326
1000pF
10W
-IN
0.1mF
5W
CS
D
OUT
DCLOCK
47mF
IN
GND
OUT
0.47mF
REF
V
DD
REF3225
AV
DD
2.7Vto5V
DV
DD
2.7Vto3.6V
V
CM
+(0Vto2.5V)
GND GND
DSP
TMS320C6xx
or
TMS320C5xx
or
TMS320C2xx
0.1mF 10mF
10mF
+
+
OPA350
OPA365
1000pF
10W
V
CM
OPA365
1nF
10W
2.2mF
+IN
ADS8326
1000pF
10W
-IN
0.1mF
5W
CS
D
OUT
DCLOCK
47mF
IN
GND
OUT
0.47mF
REF
V
DD
REF3240
AV
DD
4.3Vto5.5V
DV
DD
4.5Vto5.5V
0Vto4.096V
GND GND
Microcontroller
or
DSP
0.1mF 10mF
10mF
+
+
OPA350
OPA365
10W
2.2mF
ADS8326
www.ti.com
.................................................................................................................................................. SBAS343C –MAY 2007–REVISED SEPTEMBER 2009
APPLICATION CIRCUITS
high-frequency noise from the supply itself. The exact
Figure 44 and Figure 45 show two examples of a
values should be picked such that the filter provides
basic data acquisition system. The ADS8326 input
adequate rejection of noise. Operational amplifiers
range is connected to 2.5V or 4.096V. The 5Ω
and voltage reference are connected to analog power
resistor and 1μF to 10μF capacitor filters the
supply, AV
DD
.
microcontroller noise on the supply, as well as any
Figure 44. Basic Data Acquisition System: Example 1
Figure 45. Basic Data Acquisition System: Example 2
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Product Folder Link(s): ADS8326