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LTC2327-18 数据表(PDF) 19 Page - Linear Technology

部件名 LTC2327-18
功能描述  True Bipolar, Pseudo-Differential Input ADC with 95dB SNR
Download  26 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC2327-18 数据表(HTML) 19 Page - Linear Technology

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LTC2327-18
19
232718fa
For more information www.linear.com/LTC2327-18
TiMing DiagraMs
Chain Mode, Multiple Devices
When CHAIN = OVDD, the LTC2327-18 operates in
chain mode. In chain mode, SDO is always enabled and
RDL/SDI serves as the serial data input pin (SDI) where
daisy-chain data output from another ADC can be input.
This is useful for applications where hardware constraints
may limit the number of lines needed to interface to a large
number of converters. Figure 12 shows an example with
two daisy-chained devices. The MSB of converter A will
appear at SDO of converter B after 18 SCK cycles. The
MSB of converter A is clocked in at the SDI/RDL pin of
converter B on the rising edge of the first SCK.
Figure 12. Chain Mode Timing Diagram
232718 F12
D0A
D1A
D16A
D17A
D15B
D16B
D17B
SDOB
SDOA = RDL/SDIB
RDL/SDIA = 0
D0B
D1B
D15A
D16A
D17A
D0A
D1A
1
2
3
16
17
18
19
20
34
35
36
tDSDOBUSYL
tSSDISCK
tHSDISCK
tBUSYLH
tCONV
tHOLD
tHSDO
tDSDO
tSCKL
tSCKH
tSCKCH
tCNVL
tCYC
CONVERT
CONVERT
SCK
CNV
BUSY
CHAIN = OVDD
tQUIET
NAP
NAP
ACQUIRE
ACQUIRE
OVDD
CONVERT
IRQ
DATA IN
DIGITAL HOST
CLK
CNV
LTC2327-18
BUSY
SDO
B
SCK
RDL/SDI
CNV
LTC2327-18
SDO
A
SCK
RDL/SDI
CHAIN
OVDD
CHAIN


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