參數(shù)資料
型號： TLV1548QDBRQ1
廠商： TEXAS INSTRUMENTS INC
元件分類： ADC
英文描述： 8-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
封裝： ROHS COMPLIANT, PLASTIC, SSOP-20
文件頁數(shù)： 4/34頁
文件大?。?/td> 532K
代理商： TLV1548QDBRQ1
TLV1548Q1
LOW VOLTAGE 10BIT ANALOGTODIGITAL CONVERTER
WITH SERIAL CONTROL AND 8 ANALOG INPUTS
SGLS172B JUNE 2003 REVISED APRIL 2008
12
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
9h
0h
Ab
X
D0
MUX Address for Channel 0
AsyncFlag Reset Low
Conversion Rate Set to Fast
Conversion Result From Channel 0
CS
DATA IN
DATA OUT
EOC
Signal Channel 0 Converted
FS
(For DSP Mode)
First Cycle After Powerup
Async Flag
(Internal)
HiZ
X
Figure 4. Power Up Initialization
input clock inversion INV CLK
The input data register uses I/O CLK as the source of the sampling clock. This clock can be inverted to provide
more setup time. INV CLK can invert the clock. When INV CLK is grounded, the input clock for the input data
register is inverted. This allows an additional one-half I/O CLK period for the input data setup time. This is useful
for some serial interfaces. When the input sampling clock is inverted, the output data changes at the same time
that the input data is sampled.
Table 6. Function of INV CLK
CONDITION
CLOCK
I/O CLK ACTIVE EDGE
INV CLK
FS at CS
↓
OUTPUT DATA
CHANGES ON
INPUT DATA
SAMPLED ON
High
High (MP mode)
↓
↑
High
Low (DSP mode)
↑
↓
Low
High (MP mode)
↓
Low
Low (DSP mode)
↑
MP = microprocessor mode
DSP = digital signal processor mode
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