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

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LTC2327-18
18
232718fa
For more information www.linear.com/LTC2327-18
TiMing DiagraMs
Normal Mode, Multiple Devices
Figure 11 shows multiple LTC2327-18 devices operating
in normal mode (CHAIN = 0) sharing CNV, SCK and SDO.
By sharing CNV, SCK and SDO, the number of required
signals to operate multiple ADCs in parallel is reduced.
Since SDO is shared, the RDL/SDI input of each ADC must
be used to allow only one LTC2327-18 to drive SDO at a
time in order to avoid bus conflicts. As shown in Figure 11,
the RDL/SDI inputs idle high and are individually brought
low to read data out of each device between conversions.
When RDL/SDI is brought low, the MSB of the selected
device is output onto SDO.
Figure 11. Normal Mode with Multiple Devices Sharing CNV, SCK, and SDO
232718 F11
D17A
SDO
SCK
CNV
BUSY
CHAIN = 0
RDL/SDIB
RDL/SDIA
D17B D16B
D1B
D0B
D15B
D16A
D15A
D1A
D0A
Hi-Z
Hi-Z
Hi-Z
tEN
tHSDO
tDSDO
tDIS
tSCKL
tSCKH
tCNVL
1
2
3
16
17
18
19
20
21
34
35
36
tSCK
CONVERT
CONVERT
tQUIET
tCONV
tHOLD
tBUSYLH
NAP
ACQUIRE
ACQUIRE
NAP
RDLB
RDLA
CONVERT
IRQ
DATA IN
DIGITAL HOST
CLK
CNV
LTC2327-18
SDO
A
SCK
RDL/SDI
CNV
LTC2327-18
SDO
B
SCK
RDL/SDI
CHAIN
BUSY
CHAIN


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