LTC2355-14 Linear Technology, LTC2355-14 Datasheet - Page 8

• Manufacturer Part Number: LTC2355-14
• Description: (LTC2355-12/-14) 3.5Msps Sampling ADCs
• Manufacturer: Linear Technology

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LTC2355-12/LTC2355-14
TI I G DIAGRA
8
W
U
S/H STATUS
S/H STATUS
INTERNAL
INTERNAL
SLEEP
CONV
CONV
CONV
SLK
V
NAP
SCK
SCK
SDO
SDO
REF
NOTE: NAP AND SLEEP ARE INTERNAL SIGNALS
SAMPLE
SAMPLE
16
16
t
t
t
t
6
6
4
4
17
17
*BITS MARKED "X" AFTER D0 SHOULD BE IGNORED.
W
1
1
Hi-Z
Hi-Z
t
t
3
SDO
3
SCK
t
t
2
2
t
t
2
2
8
8
3
3
D13
D11
SDO REPRESENTS THE ANALOG INPUT FROM THE PREVIOUS CONVERSION
SDO REPRESENTS THE ANALOG INPUT FROM THE PREVIOUS CONVERSION
t
4
4
1
t
D12
D10
10
Nap Mode and Sleep Mode Waveforms
t
8
5
5
D11
LTC2355-12 Timing Diagram
D9
LTC2355-14 Timing Diagram
6
6
D10
D8
SCK to SDO Delay
HOLD
HOLD
7
7
V
V
V
IH
OH
OL
D7
D9
8
t
8
t
1
1
t
t
CONV
CONV
t
t
D6
D8
THROUGHPUT
THROUGHPUT
14-BIT DATA WORD
14-BIT DATA WORD
9
9
SDO
SCK
D5
D7
t
t
10
10
10
10
D4
D6
11
11
D5
D3
12
12
t
D4
9
D2
13
13
D3
D1
t
1
14
14
2355 TD03
D2
D0
t
12
15
15
V
90%
10%
t
t
5
5
IH
D1
X
t
t
16
8
16
8
D0
X
17
17
SAMPLE
SAMPLE
t
t
7
7
t
t
9
9
18
18
Hi-Z
Hi-Z
1
2355 TD02
1
t
t
ACQ
ACQ
HOLD
HOLD
2355 TD01b
2355 TD01
2355f