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參數(shù)資料
| 型號(hào)： | PCM78 |
| 英文描述： | 16-Bit Audio ANALOG-TO-DIGITAL CONVERTER |
| 中文描述： | 16位音頻模擬數(shù)字轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 13/16頁(yè) |
| 文件大?。?/td> | 241K |
| 代理商： | PCM78 |
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PCM78
13
FIGURE 9. Timing when using S
OUT2
Latch.
S
Clock
T
2
Ext
Clock
Status
S
Latch
S
Data
S
Data
T
3
T
4
MSB
MSB
MSB
LSB
LSB
Data (n – 1)
T
1
MSB
Data Sample n
Data (n + 1)
Data n
T
A
= +25
°
C, V
CC
= +5V, guaranteed by sample testing; these parameters are not 100% tested in production.
TIME (ns)
TYP
TIME
DESCRIPTION
MIN
MAX
T
1
T
2
T
3
T
4
S
OUT2
Latch pulse width
S
OUT2
Clock Cycle
Delay from rising edge of CLOCK OUT to bit data valid
Delay from rising edge of S
OUT2
Clock to rising edge of Ext Clock
50
100
24
10
125
30
50
FIGURE 10. Application Example of S
OUT 2
Operation.
)
f
S
1
2
Ext Clock
(
3
f
S
128
B
1 Word
WDCK
(S Latch)
(2f )
S
Word A's Serial Data
LSB
Serial Out 2
MSB
MSB
LSB
Word A’s Serial Data
Serial Out 1
MSB
LSB
MSB
LSB
Word A’s Serial Data
S Clock
JUMPER
2
3
1
4
5
15
14
13
12
11
10
9
8
X
0
X
0
X
0
X
0
X
0
0
X
X
0
0
X
X
0
0
0
0
X
X
X
X
0
0
0
0
0
0
0
0
X
X
X
X
X
X
X
X: Off
0: On
NO OF BITS
+5V
Clock Out
Convert Command
PCM78P
LS20
12
A
CL
A
CL
LS393
1
2
13
Q
Q
Q
Q
Q
3
4
5
6
11
A
B
C
D
E
1
2
3
4
5
+5V
10k
x 4
Jumper
LS20
Short
Cycle
18
(PCM78)
10
19
FIGURE 11 . Short Cycle Circuit.
CC
Clock
Short
Cycle
Status
1
2
3
4
11
12
13
11
12
13
1
2
3
Conversion
Time
FIGURE 12. Short Cycle Operation Timing.
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