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AD1985JST-REEL データシート(PDF) 8 Page - Analog Devices |
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AD1985JST-REEL データシート(HTML) 8 Page - Analog Devices |
8 / 48 page AD1985 Rev. A | Page 8 of 48 TIMING PARAMETERS Guaranteed over operating temperature range. Table 14. Parameter Symbol Min Typ Max Unit RESET ACTIVE LOW PULSE WIDTH tRST_LOW 1.0 µs RESET INACTIVE TO SDATA_IN OR BIT_CLK ACTIVE DELAY tRST2CLK 162.8 ns SYNC ACTIVE HIGH PULSE WIDTH tSYNC_HIGH 1.3 µs SYNC LOW PULSE WIDTH tSYNC_LOW 19.5 µs SYNC INACTIVE TO BIT_CLK STARTUP DELAY tSYNC2CLK 162.8 ns BIT_CLK FREQUENCY 12.288 MHz BIT_CLK PERIOD tCLK_PERIOD 81.4 ns BIT_CLK OUTPUT JITTER1, 2 750 2000 ps BIT_CLK HIGH PULSE WIDTH tCLK_HIGH 33 42 48 ns BIT_CLK LOW PULSE WIDTH tCLK_LOW 33 38 48 ns SYNC FREQUENCY 48.0 kHz SYNC PERIOD tSYNC_PERIOD 20.8 µs SETUP TO FALLING EDGE OF BIT_CLK tSETUP 10 2.5 ns HOLD FROM FALLING EDGE OF BIT_CLK tHOLD 5 ns BIT_CLK RISE TIME tRISECLK 2 4 6 ns BIT_CLK FALL TIME tFALLCLK 2 4 6 ns SYNC RISE TIME tRISESYNC 2 4 6 ns SYNC FALL TIME tFALLSYNC 2 4 6 ns SDATA_IN RISE TIME tRISEDIN 2 4 6 ns SDATA_IN FALL TIME tFALLDIN 2 4 6 ns SDATA_OUT RISE TIME tRISEDOUT 2 4 6 ns SDATA_OUT FALL TIME tFALLDOUT 2 4 6 ns END OF SLOT 2 TO BIT_CLK, SDATA_IN LOW tS2_PDOWN 0 1.0 µs SETUP TO TRAILING EDGE OF RESET (APPLIES TO SYNC, SDATA_OUT) tSETUP2RST 15.0 ns RISING EDGE OF RESET TO HIGH-Z DELAY tOFF 25.0 ns PROPAGATION DELAY 15 ns RESET RISE TIME 50 ns OUTPUT VALID DELAY FROM RISING EDGE OF BIT_CLK TO SDI VALID tCO 15 ns RESET INACTIVE TO BIT_CLK STARTUP DELAY tTRI2ACTV 25 ns 1 Guaranteed, not tested. 2 Output jitter directly dependent on crystal input jitter; maximum specified for noncrystal operation. |
同様の部品番号 - AD1985JST-REEL |
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同様の説明 - AD1985JST-REEL |
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