参数资料
型号: TLC3544IPW
厂商: TEXAS INSTRUMENTS INC
元件分类: ADC
英文描述: 4-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
封装: GREEN, PLASTIC, TSSOP-20
文件页数: 19/44页
文件大小: 1000K
代理商: TLC3544IPW
TLC3544, TLC3548
5-V ANALOG, 3-/5-V DIGITAL, 14-BIT, 200-KSPS, 4-/8-CHANNELS SERIAL
ANALOG-TO-DIGITAL CONVERTERS WITH 0-5 V (PSEUDODIFFERENTIAL) INPUTS
SLAS266C – OCTOBER 2000 – REVISED MAY 2003
26
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
conversion operation (continued)
***
Hi-Z
**
Data Lost
Hi-Z
**
Select Channel
Possible
Signal
t(sample)
t(convert)
Select Channel
16 SCLK
Select Channel
16 SCLK
Previous Conversion Result
CS Tied to Low
CSTART
FS
SDI
INT
EOC
SDO
Hi-Z
OR
Conversion Result
Don’t Care
Possible Signal
Figure 14. Mode 00, CSTART Triggers Sampling/Conversion, FS Initiates Select
**
Hi-Z
***
*
**
*
*
*
Select CH1
Select CH2
1/4 FIFO FULL
Don’t Care
***
–– WRITE CFR
**
–– Select Channel
*
–– FIFO Read
**
**
Select Any
Channel
Select Any
Channel
Possible Signal
DATA1 of CH1 DATA2 of CH1
MODE 01, FS Activates Conversion, FIFO Threshold = 1/4 Full
Read FIFO After Threshold Is Hit
CS
FS
SDI
SDO
INT
DATA1 of CH2 DATA2 of CH2
Figure 15. Mode 01, FS Initiates Operations
**
Hi-Z
***
*
**
*
*
*
1/4 FIFO FULL
Don’t Care
***
–– WRITE CFR
**
–– Select Channel
*
–– FIFO Read
Select CH1
Select CH2
DATA1 of CH1 DATA2 of CH1
DATA1 of CH2 DATA2 of CH2
MODE 01, FS Initiates Select Period, CSTART Activates Conversion, FIFO Threshold = 1/4 Full,
Read FIFO After Threshold Is Hit
CS
FS
CSTART
SDI
SDO
INT
Possible Signal
Figure 16. Mode 01, CSTART Triggers Samplings/Conversions
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