LTC2338-18 REFERENCE BUFFER CHARACTERISTICSThe l denotes the specifications which apply over the fulloperating temperature range, otherwise specifications are at TA = 25°C. (Note 4) SYMBOL PARAMETERCONDITIONSMINTYPMAXUNITS VREFBUF Reference Buffer Output Voltage VREFIN = 2.048V l 4.091 4.096 4.101 V REFBUF Input Voltage Range (REFBUF Overdriven) (Notes 5, 9) l 2.5 5 V REFBUF Output Impedance VREFIN = 0V 13 kΩ IREFBUF REFBUF Load Current VREFBUF = 5V (REFBUF Overdriven) (Notes 9, 10) l 1.05 1.2 mA VREFBUF = 5V, Nap Mode (REFBUF Overdriven) (Note 9) 0.39 mA 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) SYMBOLPARAMETERCONDITIONSMINTYPMAXUNITS 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 = –500µA l OVDD – 0.2 V VOL Low Level Output Voltage IO = 500µA 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 4.75 5 5.25 V OVDD Supply Voltage l 1.71 5.25 V IVDD Supply Current 1Msps Sample Rate (IN+ = IN– = 0V) l 10 11.2 mA IOVDD Supply Current 1Msps Sample Rate (CL = 20pF) 0.4 mA INAP Nap Mode Current Conversion Done (IVDD + IOVDD) l 3.9 4.6 mA ISLEEP Sleep Mode Current Sleep Mode (IVDD + IOVDD) l 60 225 μA PD Power Dissipation 1Msps Sample Rate (IN+ = IN– = 0V) l 50 56 mW Nap Mode Conversion Done (IVDD + IOVDD) l 19.5 23 mW Sleep Mode Sleep Mode (IVDD + IOVDD) l 0.3 1.1 mW 233818fa 4 For more information www.linear.com/LTC2338-18 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Converter Characteristics Dynamic Accuracy Internal Reference Characteristics Reference Buffer Characteristics Digital Inputs and Digital Outputs Power Requirements ADC Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagram Applications Information Board Layout Package Description Revision History Typical Application Related Parts
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