Datasheet AD7989-1, AD7989-5 (Analog Devices) - 5

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Data Sheet AD7989-1/AD7989-5 TIMING SPECIFICATIONS
VDD = 2.37 V to 2.63 V, VIO = 2.3 V to 5.5 V, TA = −40°C to +85°C, unless otherwise noted.1
Table 4.
Parameter Symbol Min Typ Max Unit THROUGHPUT RATE AD7989-1 100 kSPS AD7989-5 500 kSPS CONVERSION AND ACQUISITION TIMES Conversion Time: CNV Rising Edge to Data Available tCONV AD7989-1 9500 ns AD7989-5 1600 ns Acquisition Time tACQ AD7989-1 500 ns AD7989-5 400 ns Time Between Conversions tCYC AD7989-1 10 μs AD7989-5 2 μs CNV PULSE WIDTH (CS MODE) tCNVH 500 ns SCK SCK Period (CS Mode) tSCK VIO Above 4.5 V 10.5 ns VIO Above 3 V 12 ns VIO Above 2.7 V 13 ns VIO Above 2.3 V 15 ns SCK Period (Chain Mode) tSCK VIO Above 4.5 V 11.5 ns VIO Above 3 V 13 ns VIO Above 2.7 V 14 ns VIO Above 2.3 V 16 ns SCK Low Time tSCKL 4.5 ns SCK High Time tSCKH 4.5 ns SCK Falling Edge to Data Remains Valid tHSDO 3 ns SCK Falling Edge to Data Valid Delay tDSDO VIO Above 4.5 V 9.5 ns VIO Above 3 V 11 ns VIO Above 2.7 V 12 ns VIO Above 2.3 V 14 ns CS MODE CNV or SDI Low to SDO D17 MSB Valid tEN VIO Above 3 V 10 ns VIO Above 2.3V 15 ns CNV or SDI High or Last SCK Falling Edge to SDO High Impedance (CS Mode) tDIS 20 ns SDI Valid Setup Time from CNV Rising Edge (CS Mode) tSSDICNV 5 ns SDI Valid Hold Time from CNV Rising Edge (CS Mode) tHSDICNV 2 ns CHAIN MODE SCK Valid Setup Time from CNV Rising Edge tSSCKCNV 5 ns SCK Valid Hold Time from CNV Rising Edge tHSCKCNV 5 ns SDI Valid Setup Time from SCK Falling Edge tSSDISCK 2 ns SDI Valid Hold Time from SCK Falling Edge tHSDISCK 3 ns 1 See Figure 2 and Figure 3 for load conditions. Rev. B | Page 5 of 24 Document Outline Features Applications General Description Typical Applications Circuit Revision History Specifications Timing Specifications Absolute Maximum Ratings ESD Caution Pin Configurations and Function Descriptions Typical Performance Characteristics Terminology Theory of Operation Circuit Information Converter Operation Transfer Functions Typical Connection Diagram Analog Inputs Driver Amplifier Choice Single-Ended to Differential Driver Voltage Reference Input Power Supply Digital Interface CSB Mode, 3-Wire CSB Mode, 4-Wire Chain Mode Applications Information Interfacing to Blackfin® DSP Layout Evaluating AD7989-1/AD7989-5 Performance Outline Dimensions Ordering Guide