LTC1289 Datasheet, PDF (13/28 Pages) Linear Technology – 3 Volt Single Chip 12-Bit Data Acquisition System

APPLICATI S I FOR ATIO
8-Bit Word Length
CS
tSMPL
tCONV
SCLK
D_OUT
MSB-FIRST
D_OUT
LSB-FIRST
1
B11 B10 B9 B8 B7 B6 B5 B4
(SB)
B0 B1 B2 B3 B4 B5 B6 B7
THE LAST FOUR BITS
ARE TRUNCATED
LTC1289
12-Bit Word Length
CS
tSMPL
tCONV
SCLK
D_OUT
MSB-FIRST
D_OUT
LSB-FIRST
1
10
12
(SB)
B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
(SB)
B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11
16-Bit Word Length
CS
tSMPL
tCONV
SCLK
1
12
16
D_OUT
MSB-FIRST
D_OUT
LSB-FIRST
(SB)
FILL
B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0 _ZEROS
(SB)
B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11
***
* IN UNIPOLAR MODE, THESE BITS ARE FILLED WITH ZEROS.
IN BIPOLAR MODE, THE SIGN BIT IS EXTENDED INTO THESE LOCATIONS.
LTC1289 AIF02
Figure 2. Data Output (D_OUT) Timing with Different Word Lengths
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