Datasheet

LTC2414/LTC2418
14
241418fa
APPLICATIO S I FOR ATIO
WUUU
Figure 3a. Input/Output Data Timing
CS
SDO
Hi-Z
SIGDMY
BIT29
MSB B22
CONVERSON RESULT
BIT28 BIT27 BIT26 BIT25 BIT24
LSB
BIT6
SGL
BIT5
A2
BIT3
A1
BIT2
A0
BIT1
PARITY
BIT0
ODD/
SIGN
BIT4BIT30
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 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 01234567COM
*0 0 000 IN
+
IN
–
0 0 001 IN
+
IN
–
0 0 010 IN
+
IN
–
0 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 1 000 IN
+
IN
–
1 1 001 IN
+
IN
–
1 1 010 IN
+
IN
–
1 1 011 IN
+
IN
–
*Default at power up