参数资料
型号: TLV2548QDWG4
厂商: TEXAS INSTRUMENTS INC
元件分类: ADC
英文描述: 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
封装: PLASTIC, SOIC-20
文件页数: 7/43页
文件大小: 989K
代理商: TLV2548QDWG4
TLV2544Q, TLV2548Q, TLV2548M
3V TO 5.5V, 12BIT, 200KSPS, 4/8CHANNEL, LOW POWER
SERIAL ANALOGTODIGITAL CONVERTERS WITH AUTOPOWERDOWN
SGLS119F FEBRUARY 2002 REVISED OCTOBER 2009
15
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
conversion cycles (continued)
CS
CSTART
SDI
INT
EOC
SDO
Hi-Z
Select/Read
Cycle
Select/Read
Cycle
t(sample )
t(conv)
Previous Conversion
Result
Previous Conversion
Result
FS
Hi-Z
Device Going Into
Extended Sampling Mode
Device Get Out
Extended Sampling
Mode
Read
Cycle
Normal
Cycle
This is one of the single shot commands. Conversion starts on next rising edge of CSTART.
Figure 9. Mode 00 Single Shot/Extended Sampling (FS Signal Used, FS Pin Connected to TMS320 DSP)
modes using the FIFO: modes 01, 10, 11 timing
CS
CSTART
SDI
INT
SDO
Hi-Z
From Channel 2
FS
§
§
Hi-Z
Configure
Select
Conversion #1
Select
Conversion #4
Read FIFO
#1
#2
#3
#4
Next #1
Top of FIFO
From Channel 2
Command = Configure write for mode 01, FIFO threshold = 1/2
Command = Read FIFO, 1st FIFO read
§ Command = Select ch2.
Use any channel select command to trigger SDI input.
Figure 10. TLV2544/TLV2548 Mode 01 DSP Serial Interface (Conversions Triggered by FS)
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