Datasheet

LTC2175-12/
LTC2174-12/LTC2173-12
8
21754312fa
2-Lane Output Mode, 14-Bit Serialization
ANALOG
INPUT
ENC
–
ENC
+
DCO
–
DCO
+
t
AP
t
ENCH
t
ENCL
t
SER
t
SER
t
SER
t
PD
t
DATA
t
FRAME
SAMPLE N-6 SAMPLE N-5 SAMPLE N-4 SAMPLE N-3
N+1
N+2
N
217512 TD02
D5 D3 D1 D
X
* D11 D9 D7 D5 D3 D1 D
X
* D11 D9 D7 D5 D3 D1 D11 D9 D7
OUT#A
–
OUT#A
+
FR
–
FR
+
D4 D2 D0 D
Y
* D10 D8 D6 D4 D2 D0 D
Y
*
D
X
*
D
Y
*D10 D8 D6 D4 D2 D0 D10 D8 D6
OUT#B
–
OUT#B
+
NOTE THAT IN THIS MODE FR
+
/FR
–
HAS TWO TIMES THE PERIOD OF ENC
+
/ENC
–
*D
X
AND D
Y
ARE EXTRA NON-DATA BITS FOR COMPLETE SOFTWARE COMPATIBILITY WITH THE 14-BIT
VERSIONS OF THESE A/Ds. DURING NORMAL NON-OVERRANGED OPERATION D
X
AND D
Y
ARE SET TO
LOGIC 0. SEE THE DATA FORMAT SECTION FOR MORE DETAILS.
TiMing DiagraMs
2-Lane Output Mode, 16-Bit Serialization
ANALOG
INPUT
ENC
–
ENC
+
DCO
–
DCO
+
t
AP
t
ENCH
t
ENCL
t
SER
t
SER
t
SER
t
PD
t
DATA
t
FRAME
SAMPLE N-6 SAMPLE N-5 SAMPLE N-4
N+1
N
217512 TD01
D3 D1 D
X
* 0 D11 D9 D7 D5 D3 D1 D
X
* 0 D11 D9 D7
OUT#A
–
OUT#A
+
FR
–
FR
+
D2 D0 D
Y
* 0 D10 D8 D6 D4 D2 D0 D
Y
* 0 D10 D8 D6
OUT#B
–
OUT#B
+
*D
X
AND D
Y
ARE EXTRA NON-DATA BITS FOR COMPLETE SOFTWARE COMPATIBILITY WITH THE 14-BIT
VERSIONS OF THESE A/Ds. DURING NORMAL NON-OVERRANGED OPERATION D
X
AND D
Y
ARE SET TO
LOGIC 0. SEE THE DATA FORMAT SECTION FOR MORE DETAILS.