MAX11120–MAX11128
1Msps, Low-Power, Serial 12-/10-/8-Bit,
4-/8-/16-Channel ADCs
SELECT REFERENCE
EXTERNAL SINGLE-ENDED
EXTERNAL DIFFERENTIAL
SINGLE-ENDED
OR DIFFERENTIAL
SELECT ADC
CONFIGURATION REGISTER
SET REFSEL BIT TO 1
SELECT ADC
CONFIGURATION REGISTER
SET REFSEL BIT TO 0
FIGURE OUT NUMBER
OF CHANNELS TO USE (N)
FOR EACH ADC CHANNEL
SE, PsD/FD
SINGLE-ENDED
PSEUDO-
DIFFERENTIAL
FULLY-
DIFFERENTIAL
SINGLE-ENDED
PSEUDO-
DIFFERENTIAL
UNIPOLAR OR
BIPOLAR
PSEUDO-DIFFERENTIAL
SINGLE-ENDED
BIPOLAR
UNIPOLAR
SELECT UNIPOLAR AND
BIPOLAR REGISTER SET PER
CHANNEL UCH{X}/{X+1}
AND BCH{X}/{X+1} TO 0 FOR
SINGLE-ENDED SELECTION
SELECT BIPOLAR REGISTER
SET PER CHANNEL
BCH{X}/{X+1} TO 1
FOR BIPOLAR FULLY
DIFFERENTIAL
SELECT UNIPOLAR AND
REGISTER SET BIT PDIFF_COM
TO 1 FOR PSEUDO-
SELECT UNIPOLAR
REGISTER SET PER
CHANNEL UCH{X}/{X+1}
TO 1 FOR UNIPOLAR
DIFFERENTIAL SELECTION
1
SELECT RANGE REGISTER SET PER CHANNEL
RANGE SELECT
PAIR RANGE{X}/{X+1} TO 1 QV
REF+
0
SELECT RANGE REGISTER SET PER CHANNEL
FOR EACH ADC CHANNEL
PAIR RANGE{X}/{X+1} TO 0 QV
/2
REF+
NEXT CHANNEL
SEE FIGURE 12
Figure 11. ADC Programming Sequence
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MAXIM [ MAXIM INTEGRATED PRODUCTS ]
