Datasheet

LTC2492
25
2492fd
APPLICATIONS INFORMATION
Figure 10. Internal Serial Clock, Reduced Data Output Length with Valid Channel and Confi guration Selection
Figure 11. Internal Serial Clock, Continuous Operation
EOC
CS
SCK
(INTERNAL)
SDI
SDO
2492 F11
CONVERSION
DATA INPUT/OUTPUT
BIT 28 BIT 27 BIT 26 BIT 25 BIT 24 BIT 23 BIT 22 BIT 21 BIT 20 BIT 19BIT 29BIT 30BIT 31
1 0 EN SGL A2 A1 A0 EN2 IM FA FB SPDODD
BIT 18 BIT 17 BIT 0
2314567891011121314 32
DON'T CAREDON'T CARE
MSBSIG“0”
V
CC
f
O
SCK
SDI
SDO
CS
GND
REFERENCE
VOLTAGE
0.1V TO V
CC
ANALOG
INPUTS
= EXTERNAL OSCILLATOR
= INTERNAL OSCILLATOR
LTC2492
3-WIRE
SPI INTERFACE
OPTIONAL
10k
V
CC
REF
+
REF
–
CH0
CH1
CH2
CH3
COM
12 1
13
14
8
9
10
11
7
3
5
6
4
2
2.7V TO 5.5V
0.1μF
10μF
CONVERSION
Hi-Z
2492 F10
CS
SCK
(INTERNAL)
SDI
SDO
CONVERSION SLEEP DATA INPUT/OUTPUT
V
CC
f
O
SCK
SDI
GND
REFERENCE
VOLTAGE
0.1V TO V
CC
ANALOG
INPUTS
= EXTERNAL OSCILLATOR
= INTERNAL OSCILLATOR
LTC2492
4-WIRE
SPI INTERFACE
EOC
BIT 28 BIT 27 BIT 26 BIT 25 BIT 24 BIT 23 BIT 22 BIT 21 BIT 20 BIT 19BIT 29BIT 30BIT 31
BIT 18 BIT17 BIT 19 BIT 19
1 2 3 4 5 6 7 8 9 10111213141516
1 0 EN SGL A2 A1 A0 EN2 IM FA FB SPDODD
DON'T CAREDON'T CARE
MSBSIG“0”
OPTIONAL
10k
V
CC
<t
EOCTEST
REF
+
REF
–
CH0
CH1
CH2
CH3
COM
12 1
13
14
8
9
10
11
7
3
4
6
5
2
2.7V TO 5.5V
0.1μF
10μF
CS
SDO
CONVERSION