AL Tech 8CH Manual de usuario Pagina 22

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LTC2424/LTC2428
APPLICATIONS INFORMATION
WUU
U
Figure 16. Internal Serial Clock Timing Diagram
SCKCLK
SDO
D
IN
CSADC
CSMUX
t
EOCtest
MSB
LSB
EXRSIG
BIT0BIT4 BIT3 BIT2 BIT1BIT19BIT18BIT20BIT21BIT22BIT23
24248 F16
TEST EOC
DON’T CARE DON’T CAREEN D2 D1 D0
Hi-Z Hi-ZHi-Z
TEST EOCTEST EOC
V
CC
CS
10k
F
O
FS
SET
CSMUX
CSADC
SCK
CLK
MUXOUT
ADCIN
GND
D
IN
ZS
SET
SDO
0.1V
TO V
CC
CH0
TO CH7
0.12V
REF
TO 1.12V
REF
2.7V TO 5.5V
LTC2424/LTC2428
= 50Hz REJECTION
= EXTERNAL OSCILLATOR
= 60Hz REJECTION
V
CC
Figure 15. External Serial Clock with Reduced Data Output Length Timing Diagram
SCK/CLK
SDO
D
IN
CSADC/
CSMUX
V
CC
CS
SCK
F
O
FS
SET
CSMUX
CSADC
SCK
CLK
MUXOUT
ADCIN
D
IN
ZS
SET
GND
SDO
0.1V
TO V
CC
CH0
TO CH7
0.12V
REF
TO 1.12V
REF
2.7V TO 5.5V
LTC2424/LTC2428
MSB
EXRSIG
BIT8BIT9BIT19 BIT18BIT20BIT21BIT22BIT23
24248 F15
= 50Hz REJECTION
= EXTERNAL OSCILLATOR
= 60Hz REJECTION
V
CC
TEST EOC
DON’T CARE DON’T CAREEN D2 D1 D0
Hi-ZHi-Z
TEST EOC
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