Datasheet

Differential Common-Mode Range
The MAX1300/MAX1301 differential common-mode
range (V
CMDR
) must remain within -14V to +10V to obtain
valid conversion results. The differential common-mode
range is defined as:
( ) ( )
CMDR
CH_ CH_
V
2
++
=
In addition to the common-mode input voltage limitations,
each individual analog input must be limited to ±16.5V
with respect to AGND1.
The range-select bits R[2:0] in the analog input con-
figuration bytes determine the full-scale range for the
corresponding channel (Tables 2 and 6). Figures 9, 10,
and 11 show the valid analog input voltage ranges for
the MAX1300/MAX1301 when operating with FSR = (±3
x V
REF
)/2, FSR = ±3 x V
REF
, and FSR = ±6 x V
REF
,
respectively. The shaded area contains the valid com-
mon-mode voltage ranges that support the entire FSR.
Table 3. Input Data Word Formats
Table 4. Channel Selection in Single-Ended Mode (DIF/SGL = 0)
Table 5. Channel Selection in True-Differential Mode (DIF/SGL = 1)
OPERATION
DATA BIT
D7
(START)
D6 D5 D4 D3 D2 D1 D0
Conversion-Start Byte
(Tables 4 and 5)
1 C2 C1 C0 0 0 0 0
Analog-Input Conguration Byte
(Table 2)
1 C2 C1 C0
DIF/SGL
R2 R1 R0
Mode-Control Byte
(Table 7)
1 M2 M1 M0 1 0 0 0
CHANNEL-SELECT BIT CHANNEL
C2 C1 C0 CH0 CH1 CH2 CH3 CH4 CH5 CH6 CH7 AGND1
0 0 0 + -
0 0 1 + -
0 1 0 + -
0 1 1 + -
1 0 0 + -
1 0 1 + -
1 1 0 + -
1 1 1 + -
CHANNEL-SELECT BIT CHANNEL
C2 C1 C0 CH0 CH1 CH2 CH3 CH4 CH5 CH6 CH7 AGND1
0 0 0 + -
0 0 1 RESERVED
0 1 0 + -
0 1 1 RESERVED
1 0 0 + -
1 0 1 RESERVED
1 1 0 + -
1 1 1 RESERVED
MAX1300/MAX1301 8- and 4-Channel, ±3 x V
REF
Multirange Inputs,
Serial 16-Bit ADCs
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Maxim Integrated
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