Datasheet
LTC2488
20
2488fa
APPLICATIONS INFORMATION
Figure 8. Internal Serial Clock, Reduced Data Output Length with Valid Channel and Confi guration Selection
Figure 9. Internal Serial Clock, Continuous Operation
V
CC
F
O
SCK
SDI
SDO
CS
GND
REFERENCE
VOLTAGE
0.1V TO V
CC
ANALOG
INPUTS
= EXTERNAL OSCILLATOR
= INTERNAL OSCILLATOR
LTC2488
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
EOC
CS
SCK
(INTERNAL)
SDI
SDO
2488 F09
CONVERSION
DATA INPUT/OUTPUT
CONVERSION
1 0 EN SGL A2 A1 A0ODD
DON'T CAREDON'T CARE
MSBSIG“0”
231456789192021222324
LSB
BIT 23 BIT 22 BIT 21 BIT 20 BIT 19 BIT 18 BIT 17 BIT 16 BIT 15 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
V
CC
F
O
SCK
SDI
GND
REFERENCE
VOLTAGE
0.1V TO V
CC
ANALOG
INPUTS
= EXTERNAL OSCILLATOR
= INTERNAL OSCILLATOR
LTC2488
4-WIRE
SPI INTERFACE
OPTIONAL
10k
V
CC
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
Hi-Z
2488 F08
CS
SCK
(INTERNAL)
SDI
SDO
CONVERSION SLEEP DATA INPUT/OUTPUT CONVERSION
EOC
BIT 14 BIT 13
12345678910
1 0 EN SGL A2 A1 A0ODD
DON'T CAREDON'T CARE
MSBSIG“0”
<t
EOCTEST
BIT 23 BIT 22 BIT 21 BIT 20 BIT 19 BIT 18 BIT 17 BIT 16 BIT 15