Datasheet

ADC12130, ADC12132, ADC12138
SNAS098G –MARCH 2000–REVISED MARCH 2013 www.ti.com
Format and Set-Up Tables
Table 1. Data Out Formats
(1)
DB DB DB DB DB DB DB
DO Formats DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 DB8 DB9
10 11 12 13 14 15 16
17
X X X X Sign MSB 10 9 8 7 6 5 4 3 2 1 LSB
Bits
MSB
First
13
Sing MSB 10 9 8 7 6 5 4 3 2 1 LSB
Bits
with
Sign
17
LSB 1 2 3 4 5 6 7 8 9 10 MSB Sign X X X X
Bits
LSB
First
13
LSB 1 2 3 4 5 6 7 8 9 10 MSB Sign
Bits
16
0 0 0 0 MSB 10 9 8 7 6 5 4 3 2 1 LSB
Bits
MSB
First
12
MSB 10 9 8 7 6 5 4 3 2 1 LSB
with-
Bits
out
16
Sign
LSB 1 2 3 4 5 6 7 8 9 10 MSB 0 0 0 0
Bits
LSB
First
12
LSB 1 2 3 4 5 6 7 8 9 10 MSB
Bits
(1) X = High or Low state.
Table 2. ADC12138 Multiplexer Addressing
Analog Channel Addressed and Assignment ADC Input
Multiplexer Output
MUX Address with A/DIN1 tied to MUXOUT1 and A/DIN2 tied Polarity
Channel Assignment
to MUXOUT2 Assignment
Mode
CH CH CH CH CH CH CH CH
DI0 DI1 DI2 DI3 COM A/DIN1 A/DIN2 MUXOUT1 MUXOUT2
0 1 2 3 4 5 6 7
L L L L + − + − CH0 CH1
L L L H + − + − CH2 CH3
L L H L + − + − CH4 CH5
L L H H + − + − CH6 CH7
Differential
L H L L − + − + CH0 CH1
L H L H − + − + CH2 CH3
L H H L − + − + CH4 CH5
L H H H − + − + CH6 CH7
H L L L + − + − CH0 COM
H L L H + − + − CH2 COM
H L H L + − + − CH4 COM
H L H H + − + − CH6 COM
Single-Ended
H H L L + − + − CH1 COM
H H L H + − + − CH3 COM
H H H L + − + − CH5 COM
H H H H + − + − CH7 COM
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