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LTM2893 Datasheet(PDF) 26 Page - Linear Technology

Part # LTM2893
Description  100MHz Isolated ADC Serial Interface
PDF  32 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTM2893 Datasheet(HTML) 26 Page - Linear Technology

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LTM2893/LTM2893-1
26
28931fb
For more information www.linear.com/LTM2893
TYPICAL APPLICATIONS
Figure 15. Isolated 2Msps LTC2314-14 0V to 4.096V Input Range, ADC
Without a CNV or BUSY, LTC2314 CS Is Synchronized to Low Jitter CNV2
LTM2893
100k
VL
VCC
VL2
VCC2
CSC
CNV
BUSY
SS
SCK
MISOA
MISOB
CNV2
BUSY2
BUSYS
SS2
SCK2
MISOA2
MISOB2
VDD
5Vi
5V
3.3V
REF
OVDD
IN+
2.2µF
2.2µF
2.2µF
LTC2314-14
CNV2
5Vi
5Vi
CONFIGURATION REGISTERS WRITE 0x20h AND 0x83h
SETS SCK2 TO 50MHz AND WORDLENGTH TO 16-BIT.
NOTE: THE LTC2314-14
CHANGES SDO ON THE
FALLING EDGE OF SCK,
WITH A MAXIMUM DELAY
UNTIL THE DATA IS VALID
OF 9.1ns. THE SCK2
FREQUENCY IS REDUCED
TO 50MHz IN THIS
APPLICATION TO
GUARANTEE SETUP TIME.
MASTER
FPGA
OR
MICROPROCESSOR
(HOST)
28931 F15
SCK
SDO
22nF
50
0V TO 4.096V
INPUT
BUSY
CNV
CNV2 = BUSY2
SS2
SCK2 (50MHz)
tCNV2H
MISOA2
ADC RESULT (ISOLATED SIDE)
SS
SCK (50MHz)
MISOA
ADC RESULT (LOGIC SIDE)
500ns
CS
PRE
CLR
D
CLK
NC7SZ74
CNV2
74VHC04
Q



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