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AD7631 Fiches technique(PDF) 7 Page - Analog Devices

No de pièce AD7631
Description  18-Bit, 250 kSPS, Differential Programmable Input PulSAR ADC
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
Logo AD - Analog Devices

AD7631 Fiches technique(HTML) 7 Page - Analog Devices

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AD7631
Data Sheet
Rev. B | Page 6 of 32
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 SDCLK First Edge Delay Minimum
t18
3
20
20
20
ns
Internal SDCLK Period Minimum
t19
30
60
120
240
ns
Internal SDCLK Period Maximum
t19
45
90
180
360
ns
Internal SDCLK High Minimum
t20
15
30
60
120
ns
Internal SDCLK Low Minimum
t21
10
25
55
115
ns
SDOUT Valid Setup Time Minimum
t22
4
20
20
20
ns
SDOUT Valid Hold Time Minimum
t23
5
8
35
90
ns
SDCLK Last Edge to SYNC Delay Minimum
t24
5
7
35
90
ns
BUSY High Width Maximum
t28
2.55
3.40
5.00
8.20
μs
NOTES
1. IN SERIAL INTERFACE MODES, THE SYNC, SDCLK,
AND SDOUT ARE DEFINED WITH A MAXIMUM LOAD
CL OF 10pF; OTHERWISE, THE LOAD IS 60pF MAXIMUM.
1.6mA
IOL
500µA
IOH
1.4V
TO OUTPUT
PIN
CL
60pF
Figure 2. Load Circuit for Digital Interface Timing,
SDOUT, SYNC, and SDCLK 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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