Datasheet

LTC2381-16
16
238116f
TIMING DIAGRAM
CNV
LTC2381-16
BUSY
CONVERT
IRQ
DATA IN
DIGITAL HOST
CLK
SDO
SCK
238116 F10
RDL/SDI
CHAIN
238116 F10a
CONVERT
CONVERT
POWER-DOWN POWER-UP
ACQUIRE
ACQUIRE
CNV
CHAIN = 0
BUSY
SCK
SDO
(RDL/SDI = 0)
t
BUSYLH
t
DSDOBUSYL
t
SCK
t
HSDO
t
SCKH
t
SCKL
t
DSDO
t
CONV
t
HOLD
t
ACQ
t
ACQ
= t
CYC
– t
HOLD
t
CNVH
t
CYC
t
CNVL
D15 D14 D13 D1 D0
123 141516
Figure 12. Using a Single LTC2381-16 in Normal Mode
Normal Mode, Single Device
When CHAIN = 0, the LTC2381-16 operates in Normal
mode. In Normal mode, RDL/SDI enables or disables the
serial data output pin SDO. If RDL/SDI is high, SDO is in
high-impedance. If RDL/SDI is low, SDO is driven.
Figure 12 shows a single LTC2381-16 operated in Normal
Mode with CHAIN and RDL/SDI tied to ground. With RDL/
SDI grounded, SDO is enabled and the MSB(D15) of the
new conversion data is available at the falling edge of BUSY.
This is the simplest way to operate the LTC2381-16.