參數(shù)資料
型號: AD7928
廠商: Analog Devices, Inc.
英文描述: 8-Channel, 1 MSPS, 8-/10-/12-Bit ADCs with Sequencer in 20-Lead TSSOP
中文描述: 8通道,1 MSPS的,8-/10-/12-Bit與序列ADC的20引腳TSSOP封裝
文件頁數(shù): 22/24頁
文件大?。?/td> 607K
代理商: AD7928
AD7908/AD7918/AD7928
REV. A
CS
SCLK
DOUT
DIN
t
2
t
3
t
9
SEQ1
t
4
t
7
t
5
t
11
t
8
t
QUIET
t
6
t
CONVERT
1
2
3
4
5
6
11
12
13
14
15
16
THREE-
STATE
ADD2
ADD1
3 IDENTIFICATION
BITS
ADD0
DB7
DB6
DB0
ZERO
ZERO
4 TRAILING ZEROS
ZERO
ZERO
THREE-
STATE
t
10
ZERO
B
WRITE
DONTC
ADD2
ADD1
ADD0
CODING
DONTC
DONTC
DONTC
DONTC
Figure 17. AD7908 Serial Interface Timing Diagram
CS
SCLK
DOUT
DIN
t
2
t
3
t
9
SEQ
t
4
t
7
t
5
t
11
t
8
t
6
t
CONVERT
1
2
3
4
5
6
11
12
13
14
15
16
THREE-
STATE
ADD2
ADD1
3 IDENTIFICATION
BITS
ADD0
DB9
DB8
DB2
DB1
DB0
ZERO
2 TRAILING ZEROS
ZERO
THREE-
STATE
t
10
ZERO
B
WRITE
DONTC
ADD2
ADD1
ADD0
CODING
DONTC
DONTC
DONTC
DONTC
t
QUIET
Figure 18. AD7918 Serial Interface Timing Diagram
CS
SCLK
DOUT
DIN
t
3
t
2
t
9
SEQ
t
4
DB11
6
t
7
t
10
t
5
t
11
t
8
t
QUIET
t
CONVERT
WRITE
DONTC
ADD2
ADD1
ADD0
DONTC
DONTC
DONTC
1
2
3
4
5
13
14
15
16
B
ADD2
ADD1
ADD0
DB10
DB2
DB1
DB0
THREE-
STATE
ZERO
3 IDENTIFICATION BITS
THREE-
STATE
Figure 19. AD7928 Serial Interface Timing Diagram
CS
SCLK
DOUT
DIN
t
CONVERT
6
t
2
t
3
t
9
t
4
DB11
t
7
t
5
t
11
t
8
DB0
ZERO
V
IN
0
SEQUENCE 1
SEQUENCE 2
3 IDENTIFICATION BITS
THREE-
STATE
THREE-
STATE
1
2
3
4
5
13
14
15
16
ADD2
ADD1
ADD0
DB10
DB2
DB1
V
IN
1
V
IN
2
V
IN
3
V
IN
4
V
IN
5
V
IN
5
V
IN
6
V
IN
7
t
10
C
Figure 20. AD7928 Writing to SHADOW Register Timing Diagram
–22–
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