Datasheet AD7791 (Analog Devices) - 7

AD7791 Data Sheet ISINK (1.6mA WITH VDD = 5V, 100

A WITH VDD = 3V) TO OUTPUT 1.6V PIN 50pF ISOURCE (200

A WITH VDD = 5V, 100

A WITH VDD = 3V)
04227-0-002 Figure 2. Load Circuit for Timing Characterization
CS (I) t6 t1 t5 DOUT/RDY (O) MSB LSB t t7 2 t3 SCLK (I) t4
04227-0-003
I = INPUT, O = OUTPUT
Figure 3. Read Cycle Timing Diagram
CS (I) t t 8 11 SCLK (I) t9 t10 DIN (I) MSB LSB
04227-0-004
I = INPUT, O = OUTPUT
Figure 4. Write Cycle Timing Diagram Rev. A | Page 6 of 20 Document Outline AD7791—Specifications Timing Characteristics Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics On-chip Registers Communications Register (RS1, RS0 = 0, 0) Status Register (RS1, RS0 = 0, 0; Power-on/Reset = 0x8C) Mode Register (RS1, RS0 = 0, 1; Power-on/Reset = 0x02) Filter Register (RS1, RS0 = 1, 0; Power-on/Reset = 0x04) Data Register (RS1, RS0 = 1, 1; Power-on/Reset = 0x000000) ADC Circuit Information Overview Noise Performance Reduced Current Modes Digital Interface Single Conversion Mode Continuous Conversion Mode Continuous Read Mode Circuit Description Analog Input Channel Bipolar/Unipolar Configuration Data Output Coding Reference Input VDD Monitor Grounding and Layout Outline Dimensions Ordering Guide