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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LTM2893 датащи(PDF) 4 Page - Linear Technology |
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LTM2893 датащи(HTML) 4 Page - Linear Technology |
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4 / 32 page  LTM2893/LTM2893-1 4 28931fb For more information www.linear.com/LTM2893 SWITCHING CHARACTERISTICS The l denotes the specifications which apply over the full specified operating temperature range, otherwise specifications are at TA = 25°C. VCC = 5V, VL = 3.3V, GND = 0V, VCC2 = 5V, VL2 = 3.3V, GND2 = 0V unless otherwise noted. (Note 9) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Conversion Start tCNVH CNV Pulse Width l 20 ns tBUSYLH CNV↑ to BUSY↑ Delay l 40 ns tDCNV CNV↑ to CNV2↑ Delay (Aperture Delay) l 12 21 33 ns tCNV2H CNV2 Pulse Width (Config. SCK2 Frequency ≥ 40MHz) l 20 52 ns (Config. SCK2 Frequency ≤ 33MHz) l 35 80 ns CNV to CNV2 Rising Edge Jitter RMS (Note 7) 30 ps Minimum Low Time for CNV 100 ns SPI Timing tQUIET SCK or SS↑ Space to CNV↑ LTM2893 LTM2893-1, Configuration Register = 0x9F l 20 320 ns ns tSCK SCK Input Period SCK2 Frequency 100MHz LTM2893 (Note 3) SCK2 Frequency 100MHz LTM2893-1 (Note 3) l l 10 10 1185 ns ns tSCKH SCK Input High Time (Note 2) l 4 ns tSCKL SCK Input Low Time (Note 2) l 4 ns tSCK2 SCK2 Output Period SCK2 Frequency 100MHz (Notes 3, 8) l 9.5 10 10.8 ns tSCK2H SCK2 Output High Time (Note 2) l 4 ns tSCK2L SCK2 Output Low Time (Note 2) l 4 ns tHDMISO2 MISOA2, MISOB2 Data Hold Time from SCK2↑ (Note 2) l 1 ns tDMISO MISOA, MISOB Data Valid Delay from SCK↑ SCK2 Frequency = 100MHz or 66MHz or from SCK↓ SCK2 Frequency ≤ 50MHz CL = 20pF, VL = 5.5V (Note 2) CL = 20pF, VL = 2.5V (Note 2) CL = 20pF, VL = 1.71V (Note 2) l l l 5 7.5 8 9.5 ns ns ns tSUMISO2 MISOA2, MISOB2, Setup Time to SCK2↑ (Note 2) l 1.8 ns tHMISO MISOA, MISOB Data Remains Valid Delay from SCK↑ SCK2 Frequency = 100MHz or 66MHz or from SCK↓ SCK2 Frequency ≤ 50MHz CL = 20pF (Note 2) l 2 ns tDMISOSSF MISOA, MISOB Data Valid Delay from SS↓ CL = 20pF l 10 ns MISOA, MISOB Data Valid Delay from BUSY↓ SS = 0V, LTM2893 l 10 ns tSSFSCK SS↓ Delay to SCK↑ SCK2 Frequency 100MHz (Note 8), LTM2893-1 l 20 1185 ns tBUSYFSCKR BUSY↓ Delay to SCK↑ SS = 0V, SCK2 Frequency 100MHz (Notes 9, 10) l 15 ns tBUSY2FSS2F BUSY2↓ Delay to SS2↓ l 15 35 ns tBUSY2FBUSYF BUSY2↓ to BUSY↓ SCK2 Frequency 100MHz l 100 ns tSS2FSCK2 SS2↓ Delay to SCK2↑ SCK2 Frequency 100MHz l 15 33 ns tDIS Bus Relinquish Time After SS↑ l 35 ns tSCKSSDIS Last SCK↑ to SS↑ SCK2 Frequency 100MHz (Note 8) LTM2893-1 l 20 1185 ns tSCK2SSDIS Last SCK2↑ to SS2↑ SCK2 Frequency 100MHz l 8 ns SS↑ to SS↓ Space CRCENA Bit = 0 60 ns CRCENA Bit = 1 225 ns tSUMOSI MOSI Setup to SCK↑ LTM2893-1 or Configuration Port Write (Note 2) l 1.5 ns tHDMOSI MOSI Hold Time to SCK↑ LTM2893-1 or Configuration Port Write (Note 2) l 1 ns tSS2FMOSI2 SS2↓ to MOSI2 Valid LTM2893-1 l 8 ns |
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