參數(shù)資料
型號: ADS7808UB
英文描述: 12-Bit 10ms Serial CMOS Sampling ANALOG-to-DIGITAL CONVERTER
中文描述: 12位10ms的串行CMOS采樣模擬數(shù)字轉(zhuǎn)換器
文件頁數(shù): 5/10頁
文件大小: 251K
代理商: ADS7808UB
5
ADS7808
FIGURE 1. Basic Conversion Timing.
MODE Acquire
t
4
t
5
t
1
t
3
t
7
t
6
Convert
Acquire
t
2
BUSY
CS, R/C
TABLE II. Conversion and Data Timing T
A
= –40
°
C to
+85
°
C.
FIGURE 2. Serial Data Timing Using Internal Clock. (CS, EXT/INT and TAG Tied LOW.)
SYMBOL
DESCRIPTION
MIN
TYP
MAX UNITS
t
1
Convert Pulse Width
40
4500
ns
t
2
BUSY Delay
65
ns
t
3
t
4
BUSY LOW
8
μ
s
BUSY Delay after
End of Conversion
220
ns
t
5
Aperture Delay
40
ns
t
6
Conversion Time
5.7
8
μ
s
t
7
Acquisition Time
2
μ
s
t
6
+ t
7
Throughput Time
9
10
μ
s
t
8
R/C LOW to DATACLK Delay
450
ns
t
9
DATACLK Period
440
ns
t
10
Data Valid to DATACLK
HIGH Delay
20
75
ns
t
11
Data Valid after
DATACLK LOW Delay
100
125
ns
t
12
External DATACLK Period
100
ns
t
13
External DATACLK HIGH
20
ns
t
14
External DATACLK LOW
30
ns
t
15
DATACLK HIGH
Setup Time
20
t
12
+ 5
ns
t
16
R/C to CS
Setup Time
10
ns
t
17
SYNC Delay After
DATACLK HIGH
15
35
ns
t
18
Data Valid Delay
25
55
ns
t
19
CS to Rising Edge Delay
25
ns
t
20
Data Available after CS LOW
4.5
μ
s
1
MSB Valid
R/C
DATACLK
SDATA
t
8
t
11
t
10
t
9
2
3
11
12
Bit 10 Valid
Bit 1 Valid
Bit 9 Valid
LSB Valid
t
2
t
3
BUSY
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