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AD7641 Folha de dados(PDF) 6 Page - Analog Devices

Nome de Peças AD7641
Descrição Electrónicos  18-Bit, 2 MSPS SAR ADC
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Fabricante Electrônico  AD [Analog Devices]
Página de início  http://www.analog.com
Logo AD - Analog Devices

AD7641 Folha de dados(HTML) 6 Page - Analog Devices

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AD7641
Rev. 0 | Page 6 of 28
Table 4. Serial Clock Timings in Master Read After Convert Mode
DIVSCLK[1]
0
0
1
1
DIVSCLK[0]
Symbol
0
1
0
1
Unit
SYNC to SCLK First Edge Delay Minimum
t18
0.5
3
3
3
ns
Internal SCLK Period Minimum
t19
8
16
32
64
ns
Internal SCLK Period Maximum
t19
14
26
52
103
ns
Internal SCLK High Minimum
t20
2
6
15
31
ns
Internal SCLK Low Minimum
t21
3
7
16
32
ns
SDOUT Valid Setup Time Minimum
t22
1
5
5
5
ns
SDOUT Valid Hold Time Minimum
t23
0
0.5
10
28
ns
SCLK Last Edge to SYNC Delay Minimum
t24
0
0.5
9
26
ns
BUSY High Width Maximum
t24
0.630
0.870
1.350
2.28
μs
NOTE
IN SERIAL INTERFACE MODES, THE SYNC, SCLK, AND
SDOUT TIMING ARE DEFINED WITH A MAXIMUM LOAD
CL OF 10pF; OTHERWISE, THE LOAD IS 60pF MAXIMUM.
500µAIOL
500µAIOH
1.4V
TO OUTPUT
PIN
CL
50pF
Figure 2. Load Circuit for Digital Interface Timing,
SDOUT, SYNC, and SCLK Outputs, CL = 10 pF
0.8V
2V
2V
0.8V
0.8V
2V
tDELAY
tDELAY
Figure 3. Voltage Reference Levels for Timing


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