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LTC2641 Datasheet(PDF) 4 Page - Linear Technology |
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LTC2641 Datasheet(HTML) 4 Page - Linear Technology |
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4 / 24 page  LTC2379-18 4 237918p ADC TIMING CHARACTERISTICS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS fSMPL Maximum Sampling Frequency l 1.6 Msps tCONV Conversion Time l 380 410 ns tACQ Acquisition Time tACQ = tCYC –tCONV – tBUSYLH (Note 10) l 200 ns tCYC Time Between Conversions l 625 ns tCNVH CNV High Time l 20 ns tBUSYLH CNV ↑ to BUSY Delay CL = 20pF (Note 11) l 15 ns tCNVL Minimum Low Time for CNV (Note 11) l 20 ns tQUIET SCK Quiet Time from CNV ↑ (Note 10) l 20 ns tSCK SCK Period (Notes 11, 12) l 10 ns tSCKH SCK High Time l 4ns The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 4) POWER REQUIREMENTS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VDD Supply Voltage l 2.375 2.5 2.625 V OVDD Supply Voltage l 1.71 5.25 V IVDD IOVDD IPD IPD Supply Current Supply Current Power Down Mode Power Down Mode 1.6Msps Sample Rate 1.6Msps Sample Rate (CL = 20pF) Conversion Done (IVDD + IOVDD + IREF) Conversion Done (IVDD + IOVDD + IREF, H-Grade) l l l l 7.2 0.8 0.5 0.5 8 1 40 110 mA mA μA μA PD Power Dissipation Power Down Mode Power Down Mode 1.6Msps Sample Rate Conversion Done (IVDD + IOVDD + IREF) Conversion Done (IVDD + IOVDD + IREF, H-Grade) 18 1.25 1.25 20 100 275 mW μW μW The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 4) REFERENCE INPUT SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VREF Reference Voltage (Note 5) l 2.5 5.1 V IREF Reference Input Current (Note 9) l 1 1.2 mA VIHDGC High Level Input Voltage REF/DGC Pin l 0.8VREF V VILDGC Low Level Input Voltage REF/DGC Pin l 0.2VREF V The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 4) DIGITAL INPUTS AND DIGITAL OUTPUTS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIH High Level Input Voltage l 0.8 • OVDD V VIL Low Level Input Voltage l 0.2 • OVDD V IIN Digital Input Current VIN = 0V to OVDD l –10 10 μA CIN Digital Input Capacitance 5pF VOH High Level Output Voltage IO = –500 μA l OVDD – 0.2 V VOL Low Level Output Voltage IO = 500 μA l 0.2 V IOZ Hi-Z Output Leakage Current VOUT = 0V to OVDD l –10 10 μA ISOURCE Output Source Current VOUT = 0V –10 mA ISINK Output Sink Current VOUT = OVDD 10 mA The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 4) |
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