ADC0831-N, ADC0832-N, ADC0834-N, ADC0838-N
SNAS531B –AUGUST 1999–REVISED MARCH 2013
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Table 3. MUX Addressing: ADC0838-N Differential MUX Mode
MUX Address
ODD/
Analog Differential Channel-Pair #
SGL/
SELECT
0
1
2
3
DIF
0
SIGN
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1
2
3
4
5
6
+
−
7
0
0
0
0
1
1
1
1
+
−
0
+
−
0
+
−
0
−
0
−
+
0
−
+
0
−
+
0
+
Table 4. MUX Addressing: ADC0834-N Single-Ended MUX Mode
MUX Address
Channel #
SELECT
SGL / DIF
ODD / SIGN
0
1
2
3
1
0
1
0
1
1
1
1
1
0
0
1
1
+
+
+
+
Table 5. MUX Addressing: ADC0834-N Differential MUX Mode
MUX Address
Channel #
SELECT
SGL / DIF
ODD / SIGN
0
1
2
3
1
0
1
0
1
0
0
0
0
0
0
1
1
+
−
+
−
−
+
−
+
Table 6. MUX Addressing: ADC0832-N Single-Ended MUX Mode
MUX Address
Channel #
SGL / DIF
ODD / SIGN
0
1
1
1
0
1
+
+
Table 7. MUX Addressing: ADC0832-N Differential MUX Mode
MUX Address
Channel #
SGL / DIF
ODD / SIGN
0
+
−
1
−
+
0
0
0
1
Since the input configuration is under software control, it can be modified, as required, at each conversion. A
channel can be treated as a single-ended, ground referenced input for one conversion; then it can be
reconfigured as part of a differential channel for another conversion. Figure 22 illustrates the input flexibility which
can be achieved.
The analog input voltages for each channel can range from 50 mV below ground to 50 mV above VCC (typically
5V) without degrading conversion accuracy.
14
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