ltc1855 Linear Technology Corporation, ltc1855 Datasheet - Page 11

• Manufacturer Part Number: ltc1855
• Description: Ltc1855 - 8-channel, ?10v Input 14-bit, 100ksps Adc Converter With Shutdown
• Manufacturer: Linear Technology Corporation

TI I G DIAGRA S
TEST CIRCUITS
W U
CONVST
(A) Hi-Z TO V OH AND V OL TO V OH
SDO
RD
SCK
DN
Hi-Z
Load Circuits for Access Timing
1k
t 1
t
8
(For Short Pulse Mode)
(SDO Valid After RD )
t 3
50%
25pF
, t
4
t
, t
4
0.4V
5
W
t
(SCK Timing)
1
t
3
(B) Hi-Z TO V OL AND V OH TO V OL
t
8
t
5
DN
50%
2.4V
0.4V
5V
1k
18545 TD03
25pF
18545 TD05
18545 TD01
18545 TC01
t
7
CONVST
SDO
SCK
SCK
(Time from Previous Data Remains Valid After SCK )
RD
BUSY
LTC1854/LTC1855/LTC1856
t
DN
6
Load Circuits for Output Float Delay
(Delay Time, SCK to SDO Valid)
(A) V OH TO Hi-Z
0.4V
t
1k
2.4V
9
t
t
9
(RD to SCK Setup Time)
2
t
2
(CONVST to BUSY Delay)
0.4V
25pF
2.4V
t
t
0.4V
6
7
2.4V
0.4V
DN
(B) V OL TO Hi-Z
5V
1k
18545 TC02
25pF
18545 TD04
18545 TD06
18545 TD02
11
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