LTC2353-16 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 fSMPL Maximum Sampling Frequency 2 Channels Enabled l 550 ksps 1 Channel Enabled l 800 ksps tCYC Time Between Conversions 2 Channels Enabled, fSMPL = 550ksps l 1815 ns 1 Channel Enabled, fSMPL = 800ksps l 1250 ns tCONV Conversion Time N Channels Enabled, 1 ≤ N ≤ 2 l 450•N 500•N 550•N ns tACQ Acquisition Time 2 Channels Enabled, fSMPL = 550ksps l 685 795 ns (tACQ = tCYC – tCONV – tBUSYLH) 1 Channel Enabled, fSMPL = 800ksps l 670 730 ns tCNVH CNV High Time l 40 ns tCNVL CNV Low Time l 750 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 18, 19) l 10 ns tSCKIH SCKI High Time l 4 ns tSCKIL SCKI Low Time l 4 ns tSSDISCKI SDI Setup Time from SCKI (Note 18) l 2 ns tHSDISCKI SDI Hold Time from SCKI (Note 18) l 1 ns tDSDOSCKI SDO Data Valid Delay from SCKI CL = 25pF (Note 18) l 7.5 ns tHSDOSCKI SDO Remains Valid Delay from SCKI CL = 25pF (Note 18) l 1.5 ns tSKEW SDO to SCKO Skew (Note 18) l –1 0 1 ns tDSDOBUSYL SDO Data Valid Delay from BUSY CL = 25pF (Note 18) l 0 ns tEN Bus Enable Time After CS (Note 18) l 15 ns tDIS Bus Relinquish Time After CS (Note 18) l 15 ns LVDS I/O Mode tSCKI SCKI Period (Note 20) l 4 ns tSCKIH SCKI High Time (Note 20) l 1.5 ns tSCKIL SCKI Low Time (Note 20) l 1.5 ns tSSDISCKI SDI Setup Time from SCKI (Notes 11, 20) l 1.2 ns tHSDISCKI SDI Hold Time from SCKI (Notes 11, 20) l –0.2 ns tDSDOSCKI SDO Data Valid Delay from SCKI (Notes 11, 20) l 6 ns tHSDOSCKI SDO Remains Valid Delay from SCKI (Notes 11, 20) 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 235316f For more information www.linear.com/LTC2353-16 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 TYPICAL APPLICATION RELATED PARTS
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