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AD7663 Scheda tecnica(PDF) 6 Page - Analog Devices |
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AD7663 Scheda tecnica(HTML) 6 Page - Analog Devices |
6 / 32 page AD7610 Rev. 0 | 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 2.25 3.00 4.40 7.30 μs NOTES 1. IN SERIAL INTERFACE MODES, THE SYNC, SCLK, 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 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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