LTC2381-16 REFERENCE INPUTThe l denotes the specifications which apply over the full operating temperature range, otherwisespecifications are at TA = 25°C. (Note 4)SYMBOLPARAMETERCONDITIONSMINTYPMAXUNITS VREF Reference Voltage (Note 5) l 2.4 2.6 V IREF Load Current (Note 9) l 285 µA DIGITAL INPUTS AND DIGITAL OUTPUTSThe l denotes the specifications which apply over thefull operating temperature range, otherwise specifications are at TA = 25°C. (Note 4) SYMBOL PARAMETERCONDITIONSMINTYPMAXUNITS 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 5 pF 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 POWER REQUIREMENTSThe l denotes the specifications which apply over the full operating temperaturerange, otherwise specifications are at TA = 25°C. (Note 4)SYMBOLPARAMETERCONDITIONSMINTYPMAXUNITS VDD Supply Voltage l 2.375 2.5 2.625 V OVDD Supply Voltage 1.71 5.25 V IDD Supply Current 250ksps Sample Rate l 1.3 1.7 mA Power Down Mode Conversion Done l 0.5 40 µA Power Down Mode Conversion Done (H-Grade) l 0.5 110 µA PD Power Dissipation 250ksps Sample Rate 3.25 4.25 mW Power Down Mode Conversion Done 1.25 100 µW Power Down Mode Conversion Done (H-Grade) 1.25 275 µW ADC TIMING CHARACTERISTICSThe l denotes the specifications which apply over the full operatingtemperature range, otherwise specifications are at TA = 25°C. (Note 4)SYMBOLPARAMETERCONDITIONSMINTYPMAXUNITS fSMPL Maximum Sampling Frequency l 250 ksps tCONV Conversion Time l 2 3 µs tACQ Acquisition Time tACQ = tCYC – tHOLD (Note 10) l 3.25 µs tHOLD Maximum Time Between Acquisitions l 750 ns tCYC Time Between Conversions l 4 us tCNVH CNV High Time l 20 ns tBUSYLH CNV ↑ to BUSY Delay CL = 20pF (Note 11) l 20 ns tCNVL Minimum Low Time for CNV (Note 11) l 200 ns tSCK SCK Period (Notes 11, 12) l 10 ns 238116fa 4 For more information www.linear.com/LTC2381-16
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