Datasheet

MAX1036–MAX1039

2.7V to 3.6V and 4.5V to 5.5V, Low-Power,

4-/12-Channel 2-Wire Serial 8-Bit ADCs

18 ______________________________________________________________________________________

CS3

CS2

CS1 CS0 AIN0 AIN1 AIN2 AIN3

AIN4 AIN5 AIN6 AIN7 AIN8 AIN9 AIN10 AIN11

0000+-

0001-+

0010 +-

0011 -+

0100 +-

0101 -+

0110 +-

0111 -+

1000 +-

1001 -+

1010 +-

1011 -+

1 1 0 0 RESERVED

1 1 0 1 RESERVED

1 1 1 0 RESERVED

1 1 1 1 RESERVED

Table 4. Channel Selection in Pseudo-Differential Mode (SGL / DIF = 0)

Note 1: For MAX1036/MAX1037, CS3 and CS2 are internally set to zero.

Note 2: When SEL1 =1, a pseudo-differential read between AIN2 and AIN3/REF (MAX1036/MAX1037) or AIN10 and AIN11/REF

(MAX1038/MAX1039) returns the difference between GND and AIN2 or AIN10, respectively. For example, a pseudo-differen-

tial read of 1011 returns the negative difference between AIN10 and GND.

Note 3: When scanning multiple channels (SCAN0 = 0), CS0 = 0 causes the even-numbered channel-select bits to be scanned,

while CS0 = 1 causes the odd-numbered channel-select bits to be scanned. For example, if the MAX1038/MAX1039

SCAN[1:0] = 00 and CS[3:0] = 1010, a pseudo-differential read returns AIN0–AIN1, AIN2–AIN3, AIN4–AIN5, AIN6–AIN7,

AIN8–AIN9, and AIN10–AIN11. If the MAX1038/MAX1039 SCAN[1:0] = 00 and CS[3:0] = 1011, a pseudo-differential read

returns AIN1–AIN0, AIN3–AIN2, AIN5–AIN4, AIN7–AIN6, AIN9–AIN8, and AIN11–AIN10.