
LTC2414/LTC2418
14
241418fa
APPLICATIO S I FOR ATIO
WU
UU
Figure 3a. Input/Output Data Timing
CS
SDO
Hi-Z
SIG
DMY
BIT29
MSB
B22
CONVERSON RESULT
BIT28
BIT27
BIT26
BIT25
BIT24
LSB
BIT6
SGL
BIT5
A2
BIT3
A1
BIT2
A0
BIT1
PARITY
BIT0
ODD/
SIGN
BIT4
BIT30
SCK
SDI
SLEEP
DATA INPUT/OUTPUT
BIT31
EOC
1
0
EN
SGL
A2
A1
A0
DON’T CARE
CONVERSION
241418 F03a
ODD/
SIGN
ADDRESS CORRESPONDING TO RESULT
ADDRESS
N – 1
CONVERSION RESULT
N – 1
ADDRESS
N
ADDRESS
N + 1
ADDRESS
N + 2
OUTPUT
N – 1
OUTPUT
N
OUTPUT
N + 1
SDO
SCK
SDI
OPERATION
Hi-Z
DON’T CARE
CONVERSION N
241418 F03b
CONVERSION N + 1
DON’T CARE
Hi-Z
CONVERSION RESULT
N
CONVERSION RESULT
N + 1
ADDRESS
N
ADDRESS
N + 1
Figure 3b. Typical Operation Sequence
Table 1. Channel Selection for the LTC2414 (Bit A2 Should Always Be 0)
MUX ADDRESS
CHANNEL SELECTION
ODD/
SGL
SIGN
A2 A1 A0
01234567
COM
*
0
000
IN+
IN–
0
001
IN+
IN–
0
010
IN+
IN–
0
011
IN+
IN–
0
1
000
IN–
IN+
0
1
001
IN–
IN+
0
1
010
IN–
IN+
0
1
011
IN–
IN+
1
0
000
IN+
IN–
1
0
001
IN+
IN–
1
0
010
IN+
IN–
1
0
011
IN+
IN–
1
000
IN+
IN–
1
001
IN+
IN–
1
010
IN+
IN–
1
011
IN+
IN–
*Default at power up