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AD8372-EVALZ1 Folha de dados(PDF) 5 Page - Analog Devices |
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AD8372-EVALZ1 Folha de dados(HTML) 5 Page - Analog Devices |
5 / 16 page AD8372 Rev. 0 | Page 5 of 16 SERIAL CONTROL INTERFACE TIMING DON'T CARE WRITE BIT LSB LSB + 1 LSB + 2 MSB – 2 MSB – 1 MSB tDH tDS tLH tLS tPW tCLK NOTES 1. THE FIRST SDI BIT DETERMINES WHETHER THE PART IS WRITING TO OR READING FROM THE INTERNAL GAIN WORD REGISTER. FOR A WRITE OPERATION, THE FIRST BIT SHOULD BE A HIGH LOGIC LEVEL, FOR A READ OPERATION THE FIRST BIT SHOULD BE A LOGIC 1. THE GAIN WORD BIT IS THEN REGISTERED INTO THE SDI PIN ON THE NEXT RISING CLOCK. CLK1 OR CLK2 LCH1 OR LCH2 SDI1 OR SDI2 Figure 2. Write Mode Timing Diagram tLH tDH tDS tLS tPW tCLK DC DC READ BIT DC DC DC DC DC LSB LSB + 1 LSB + 2 MSB – 2 MSB – 1 MSB NOTES 1. THE GAIN WORD BIT IS UPDATED AT THE SDO PIN ON THE FALLING CLOCK EDGE. CLK1 OR CLK2 LCH1 OR LCH2 SDI1 OR SDI2 SDO1 OR SDO2 tD Figure 3. Read Mode Timing Diagram Table 3. Serial Programming Timing Parameters Parameter Min Unit Clock Pulse Width (tPW) 10 ns Clock Period (tCK) 20 ns Write Mode Setup Time Data vs. Clock (tDS) 0.0 ns Hold Time Data vs. Clock (tDH) 1.6 ns Setup Time Latch vs. Clock (tLS) −1.8 ns Hold Time Latch vs. Clock (tLH) 2.0 ns Read Mode Clock to Data Out (tD) 4.5 ns |
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Descrição semelhante - AD8372-EVALZ1 |
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