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| LTC1273 Datasheet, PDF (18/24 Pages) Linear Technology – 12-Bit, 300ksps Sampling A/D Converters with Reference | |||
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LTC1273
LTC1275/LTC1276
APPLICATI S I FOR ATIO
CS
RD
BUSY
DATA
HOLD
t1
t4
t5
t2
t CONV
t3
t7
OLD DATA
DB11-DB0
t12
t1
t4
t11
t2
t5
t CONV
t3
t7
NEW DATA
DB11-DB0
t12
TRACK
LTC1273/75/76 ⢠F15
Figure 15. ROM Mode, Parallel Read Timing Diagram (HBEN = LOW)
Table 4. ROM Mode, Parallel Read Data Bus Status
Data Outputs
First Read (Old Data)
Second Read
D11 D10
D9
D8
D7
D6
D5
D4 D3/11 D2/10 D1/9 D0/8
DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
HBEN
CS
RD
BUSY
DATA
HOLD
TRACK
t8
t9
t8
t9
t8
t9
t1
t4
t2
t5
tCONV
t1
t5
t4
t1
t4
t5
t10
t11
t2
t3
t7
OLD DATA
DB7-DB0
t12
t3
t7
NEW DATA
DB11-DB8
t3
t7
NEW DATA
DB7-DB0
t12
Figure 16. ROM Mode Two Byte Read Timing Diagram
LTC1272 ⢠TA16
Table 5. ROM Mode, Two Byte Read Data Bus Status
Data Outputs
D7
D6
D5
D4
D3/11
D2/10
D1/9
D0/8
First Read (Old Data)
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
Second Read (New Data)
Low
Low
Low
Low
DB11
DB10
DB9
DB8
Third Read (New Data)
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
18
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