Datasheet

LTC2480
22
2480fd
applicaTions inForMaTion
EN GS2 GS1 GS0 IM FA FB SPD
SDI*
DON’T CARE DON’T CARE
SDO
SCK
(EXTERNAL)
CS
DATA
OUTPUT
CONVERSIONSLEEP
SLEEP
SLEEP
TEST EOC
DATA OUTPUT
Hi-Z Hi-ZHi-Z
CONVERSION
2480 F06
MSBSIG
BIT 8BIT 19 BIT 18 BIT 17 BIT 16 BIT 9BIT 20BIT 21BIT 22
EOC
BIT 23BIT 0
EOC
Hi-Z
TEST EOC
TEST EOC
(OPTIONAL)
V
CC
F
O
V
REF
IN
+
IN
–
SCK
SDI
SDO
CS
GND
2 10
INT/EXT CLOCK
3
4
5
9
7
8
6
1
REFERENCE
VOLTAGE
0.1V TO V
CC
ANALOG
INPUT
1µF
2.7V TO 5.5V
LTC2480
4-WIRE
SPI INTERFACE
Figure 6. External Serial Clock, Reduced Data Output Length
Figure 7. External Serial Clock, CS = 0 Operation
EN GS2 GS1 GS0 IM FA FB SPD
SDI*
DON’T CARE DON’T CARE
EOC
BIT 23
SDO
SCK
(EXTERNAL)
CS
MSBSIG
BIT 0
IM
LSB
BIT 4BIT 19 BIT 18 BIT 17 BIT 16BIT 20BIT 21BIT 22
DATA OUTPUT CONVERSION
2480 F07
CONVERSION
V
CC
F
O
V
REF
IN
+
IN
–
SCK
SDI
SDO
CS
GND
2 10
INT/EXT CLOCK
3
4
5
9
7
8
6
1
REFERENCE
VOLTAGE
0.1V TO V
CC
ANALOG
INPUT
1µF
2.7V TO 5.5V
LTC2480
3-WIRE
SPI INTERFACE