TLC2578IDW Datasheet, PDF (29/49 Pages) Texas Instruments – 5-V ANALOG,3-/5-V DIGITAL, 14-/12-BIT, 200-KSPS, 4-/8-CHANNEL SERIAL ANALOG-TO-DIGITAL CONVERTERS WIRH 10-V INPUTS

TLC3574, TLC3578, TLC2574, TLC2578
5ĆV ANALOG, 3Ć/5ĆV DIGITAL, 14Ć/12ĆBIT, 200ĆKSPS, 4Ć/8ĆCHANNEL
SERIAL ANALOGĆTOĆDIGITAL CONVERTERS WITH ±10ĆV INPUTS
SLAS262C − OCTOBER 2000 − REVISED MAY 2003
conversion operation (continued)
CS Tied to Low
Select Channel
16 SCLK
t_(sample)
Select Channel
16 SCLK
CSTART
Possible
FS
Signal
t_(convert)
SD_ÌI _ÌÌÌ^*****_{ÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌ}** _{ÌÌÌÌÌÌÌ}
INT
EOC
OR
SDO
Previous Conversion Result
Hi-Z
Data Lost
Hi-Z
Conversion Result
Hi-Z
Possible Signal
** Select Channel
ÌÌÌÌ Don’t Care
Figure 13. Mode 00, CSTART Triggers Sampling/Conversion, FS Initiates Select
CS
FS
SDI
ÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌ ÌÌÌÌÌÌÌÌ _SDO
ÌÌÌÌÌÌÌ ^{ÌÌÌ INT}
Select CH1
Select Any
Channel
Select CH2
Select Any
Channel
***
**
**
*
*
**
**
*
*
DATA1 of CH1 DATA2 of CH1
Hi-Z
1/4 FIFO FULL
DATA1 of CH2 DATA2 of CH2
1/4 FIFO FULL
Don’t Care
Possible Signal
MODE 01, FS Activates Conversion, FIFO Threshold = 1/4 Full
*** −− WRITE CFR
Read FIFO After Threshold Is Hit
** −− Select Channel
* −− FIFO Read
Figure 14. Mode 01, FS Initiates Operations
CS
FS
CSTART
SDI
ÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌ _SDO
Select CH1
***
**
Select CH2
*
*
**
*
*
Hi-Z
1/4 FIFO FULL
DATA1 of CH1 DATA2 of CH1
1/4 FIFO FULL
DATA1 of CH2 DATA2 of CH2
ÌÌ INT
Don’t Care
Possible Signal
*** −− WRITE CFR
** −− Select Channel
* −− FIFO Read
MODE 01, FS Initiates Select Period, CSTART Activates Conversion, FIFO Threshold = 1/4 Full,
Read FIFO After Threshold Is Hit
Figure 15. Mode 01, CSTART Triggers Samplings/Conversions
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