LTC2348-18 aDc TiMing characTerisTics The l denotes the specifications which apply over the full operatingtemperature range, otherwise specifications are at TA = 25°C. (Note 9) SYMBOLPARAMETERCONDITIONSMINTYPMAXUNITS tCNVH CNV High Time l 40 ns tCNVL CNV Low Time l 420 ns tBUSYLH CNV↑ to BUSY Delay CL = 25pF l 30 ns tQUIET Digital I/O Quiet Time from CNV↑ l 20 ns tPDH PD High Time l 40 ns tPDL PD Low Time l 40 ns tWAKE REFBUF Wake-Up Time CREFBUF = 47μF, CREFIN = 0.1μF 200 ms CMOS I/O Mode tSCKI SCKI Period (Notes 17, 18) l 10 ns tSCKIH SCKI High Time l 4 ns tSCKIL SCKI Low Time l 4 ns tSSDISCKI SDI Setup Time from SCKI↑ (Note 17) l 2 ns tHSDISCKI SDI Hold Time from SCKI↑ (Note 17) l 1 ns tDSDOSCKI SDO Data Valid Delay from SCKI↑ CL = 25pF (Note 17) l 7.5 ns tHSDOSCKI SDO Remains Valid Delay from SCKI↑ CL = 25pF (Note 17) l 1.5 ns tSKEW SDO to SCKO Skew (Note 17) l –1 0 1 ns tDSDOBUSYL SDO Data Valid Delay from BUSY↓ CL = 25pF (Note 17) l 0 ns tEN Bus Enable Time After CS↓ (Note 17) l 15 ns tDIS Bus Relinquish Time After CS↑ (Note 17) l 15 ns LVDS I/O Mode tSCKI SCKI Period (Note 19) l 4 ns tSCKIH SCKI High Time (Note 19) l 1.5 ns tSCKIL SCKI Low Time (Note 19) l 1.5 ns tSSDISCKI SDI Setup Time from SCKI (Notes 11, 19) l 1.2 ns tHSDISCKI SDI Hold Time from SCKI (Notes 11, 19) l –0.2 ns tDSDOSCKI SDO Data Valid Delay from SCKI (Notes 11, 19) l 6 ns tHSDOSCKI SDO Remains Valid Delay from SCKI (Notes 11, 19) l 1 ns tSKEW SDO to SCKO Skew (Note 11) l –0.4 0 0.4 ns tDSDOBUSYL SDO Data Valid Delay from BUSY↓ (Note 11) l 0 ns tEN Bus Enable Time After CS↓ l 50 ns tDIS Bus Relinquish Time After CS↑ l 15 ns 234818fa For more information www.linear.com/LTC2348-18 7 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics 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 Configuration Tables Functional Block Diagram Timing Diagram Applications Information Board Layout Package Description Revision History Typical Application Related Parts
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