LTC2157-12/ LTC2156-12/LTC2155-12 TIMING DIAGRAMSSPI Port Timing (Readback Mode) tS tDS tDH tSCK tH CS SCK tDO SDI R/W A6 A5 A4 A3 A2 A1 A0 XX XX XX XX XX XX XX XX SDO D7 D6 D5 D4 D3 D2 D1 D0 HIGH IMPEDANCE SPI Port Timing (Write Mode) CS SCK SDI R/W A6 A5 A4 A3 A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0 SDO 21576512 TD02 HIGH IMPEDANCE 21576512fb For more information www.linear.com/LTC2157-12 7 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Converter Characteristics Analog Input Dynamic Accuracy Internal Reference Characteristics Power Requirements Digital Inputs And Outputs Timing Characteristics Timing Diagrams Typical Performance Characteristics Pin Functions Functional Block Diagram Applications Information Related Parts