ltc2428 Linear Technology Corporation, ltc2428 Datasheet - Page 22

• Manufacturer Part Number: ltc2428
• Description: 4-/8-channel 20-bit ?power No Latency Delta-sigma Adc
• Manufacturer: Linear Technology Corporation

APPLICATIONS
LTC2424/LTC2428
22
SCK/CLK
CSADC/
CSMUX
SDO
D
IN
SCKCLK
CSMUX
CSADC
SDO
D
TEST EOC
IN
TEST EOC
DON’T CARE
Hi-Z
t
EOCtest
DON’T CARE
U
Hi-Z
TEST EOC
Figure 15. External Serial Clock with Reduced Data Output Length Timing Diagram
INFORMATION
U
TEST EOC
EN
D2
Hi-Z
W
D1
Hi-Z
Figure 16. Internal Serial Clock Timing Diagram
BIT23
D0
BIT22
TO 1.12V
–0.12V
TO 1.12V
BIT21
U
SIG
–0.12V
TO V
2.7V TO 5.5V
TO V
0.1V
REF
REF
2.7V TO 5.5V
BIT20
CC
EXR
0.1V
REF
REF
CC
BIT19 BIT18
MSB
BIT23
V
FS
CH0
TO CH7
MUXOUT
ADCIN
ZS
GND
LTC2424/LTC2428
CC
V
FS
CH0
TO CH7
MUXOUT
ADCIN
ZS
GND
SET
SET
LTC2424/LTC2428
CC
SET
SET
BIT22
CSMUX
CSADC
BIT21
SIG
CSMUX
CSADC
SDO
SCK
CLK
D
BIT4 BIT3 BIT2 BIT1
F
SDO
IN
SCK
CLK
O
D
F
BIT20
IN
EXR
O
EN
BIT19 BIT18
MSB
D2
CS
SCK
V
CC
D1
V
= 50Hz REJECTION
= EXTERNAL OSCILLATOR
= 60Hz REJECTION
CC
CS
= 50Hz REJECTION
= EXTERNAL OSCILLATOR
= 60Hz REJECTION
LSB
BIT0
D0
DON’T CARE
BIT9
10k
BIT8
Hi-Z
DON’T CARE
TEST EOC
24248 F16
24248 F15