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TLC3574_14 Datasheet, PDF (30/50 Pages) Texas Instruments – 14-Bit Resolution for TLC3574/78, 12-Bit for TLC2574/2578 | |||
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TLC3574, TLC3578, TLC2574, TLC2578
5ÄV ANALOG, 3Ä/5ÄV DIGITAL, 14Ä/12ÄBIT, 200ÄKSPS, 4Ä/8ÄCHANNEL
SERIAL ANALOGÄTOÄDIGITAL CONVERTERS WITH ±10ÄV INPUTS
SLAS262C â OCTOBER 2000 â REVISED MAY 2003
conversion operation (continued)
Configure
CS
Conversion
From CH0
Conversion
From CH3
Conversion
From CH0
Conversion
From CH3
FS
SDI
ÃÃ***ÃÃÃÃÃÃ**ÃÃÃÃ**ÃÃÃÃ**ÃÃÃÃ**ÃÃÃÃÃÃ* ÃÃÃÃ* ÃÃÃÃ* ÃÃ*ÃÃÃÃ**ÃÃÃÃ**ÃÃÃÃ** ÃÃÃÃ** ÃÃÃÃ* ÃÃ
INT
ÃÃ SDO
Hi-Z
1st Sweep
ÃÃDonât Care
ÃÃ*** Command = Configure Write for Mode 10, FIFO
Threshold = 1/2 Full, Sweep Sequence: 0â1â2â3
CH0
CH1
CH2
CH3
1st FIFO Read
2nd Sweep
Using Existing
Configuration
Read FIFO After FIFO Threshold Is Hit
CH0
2nd FIFO Read
** COMMAND = Select Any Channel
* COMMAND = Read FIFO
Figure 16. Mode 10, FS Initiates Operations
CS Tied
to Low
FS
Configure
Conversion
From CH0
Conversion
From CH2
Conversion
From CH0
Conversion
From CH2
CSTART
à ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃà ÃÃÃÃÃÃÃÃÃà SDI
INT
*** **
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ SDO
Hi-Z
1st Sweep
ÃÃÃÃÃ ÃÃ Donât Care
ÃÃ*** Command = Configure Write for Mode 10, FIFO
*
*
*
* **
*
CH0
CH0
CH2
CH2
1st FIFO Read
2nd Sweep
Using Existing
Configuration
CH0
2nd FIFO Read
Read FIFO After FIFO Threshold Is Hit, FS Initiates Select Period
Threshold = 1/2 Full, Sweep Sequence: 0â0â2â2
** COMMAND = Select Any Channel
* COMMAND = Read FIFO
Figure 17. Mode 10, CSTART Initiates Operations
Configure Conversion
From CH0
Conversion Conversion
From CH3 From CH0
Conversion
From CH3
Conversion
From CH0
CS
START 2nd Round SWEEP CONVERSION,
FS=High
the DATA of the 1st Round Are Lost
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ ÃÃÃÃÃÃÃÃÃÃ SDI ***
**
**
**
**
**
**
**
**
*
*
*
*
**
INT
ÃÃ SDO
ÃÃÃÃDonât Care
ÃÃ
CH0
CH1
CH2
CH3
READ the DATA of 2nd
Sweep From FIFO
*** Command = Configure Write for Mode 11, FIFO
Threshold = 1/2 Full, Sweep Sequence: 0â1â2â3
** COMMAND = Select Any Channel
START 2nd Sweep conversion immediately (NO FIFO READ) after the 1st SWEEP completed.
* COMMAND = Read FIFO
Figure 18. Mode 11, CS Initiates Operations
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