參數(shù)資料
型號(hào): ADS7825PB
英文描述: 4 Channel, 16-Bit Sampling CMOS A/D Converter
中文描述: 4通道,16位采樣的CMOS A / D轉(zhuǎn)換
文件頁數(shù): 9/16頁
文件大?。?/td> 342K
代理商: ADS7825PB
9
ADS7825
Hi-Z State
BUSY
R/C
DATA
BUS
High Byte
t
3
t
4
t
21
t
21
t
1
t
21
t
21
BYTE
t
21
t
21
t
21
t
21
t
21
t
21
Hi-Z State
Low Byte
Hi-Z State
t
9
t
12
t
9
t
12
CS
FIGURE 2. Conversion Timing with Parallel Output (CS LOW).
t
10
BUSY
R/C
MODE
Acquire
Convert
t
11
t
7
t
6
t
3
t
4
t
1
Acquire
Convert
t
8
t
6
t
3
Parallel
Data Bus
Previous
High Byte Valid
t
12
Hi-Z
Not Valid
t
2
t
9
High Byte
Valid
t
12
t
9
t
12
BYTE
t
1
Previous Low
Byte Valid
Previous High
Byte Valid
Low Byte
Valid
High Byte
Valid
t
12
Hi-Z
t
12
t
12
t
5
FIGURE 3. Using CS to Control Conversion and Read Timing with Parallel Outputs.
FIGURE 4. Serial Data Timing Using Internal Data Clock (TAG LOW).
1
MSB Valid
Hi-Z
CS or R/C
(1)
DATACLK
SDATA
BUSY
t
7
+ t
8
t
16
t
15
t
14
t
26
t
13
t
25
2
3
15
16
Bit 14 Valid
Bit 1 Valid
Bit 13 Valid
LSB Valid
Hi-Z
NOTE: (1) If controlling with CS, tie R/C LOW. If controlling with R/C, tie CS LOW.
1
MSB Valid
2
Bit 14 Valid
(Results from previous conversion.)
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