Datasheet AD9271 (Analog Devices) - 9

AD9271 ADC TIMING DIAGRAMS N – 1 AIN tA N tEH tEL CLK– CLK+ tCPD DCO– DCO+ t t FCO FRAME FCO– FCO+ tPD tDATA DOUTx– MSB D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 MSB D10
2
N – 9 N – 9 N – 9 N – 9 N – 9 N – 9 N – 9 N – 9 N – 9 N – 9 N – 9 N – 9 N – 8 N – 8
0 0 4- 30
DOUTx+
06 Figure 2. 12-Bit Data Serial Stream (Default)
N – 1 AIN tA N tEH tEL CLK– CLK+ tCPD DCO– DCO+ t t FCO FRAME FCO– FCO+ tPD tDATA DOUTx– LSB D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 LSB D0 N – 9 N – 9 N – 9 N – 9 N – 9 N – 9 N – 9 N – 9 N – 9 N – 9 N – 9 N – 9 N – 8 N – 8
04
DOUTx+
0 4- 30 06 Figure 3. 12-Bit Data Serial Stream, LSB First Rev. B | Page 9 of 60 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY PRODUCT HIGHLIGHTS SPECIFICATIONS AC SPECIFICATIONS DIGITAL SPECIFICATIONS SWITCHING SPECIFICATIONS ADC TIMING DIAGRAMS ABSOLUTE MAXIMUM RATINGS THERMAL IMPEDANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS EQUIVALENT CIRCUITS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION ULTRASOUND CHANNEL OVERVIEW Low Noise Amplifier (LNA) Active Impedance Matching LNA Noise INPUT OVERDRIVE Input Overload Protection CW DOPPLER OPERATION Crosspoint Switch TGC OPERATION Variable Gain Amplifier Gain Control VGA Noise Antialiasing Filter ADC CLOCK INPUT CONSIDERATIONS Clock Duty Cycle Considerations Clock Jitter Considerations Power Dissipation and Power-Down Mode Digital Outputs and Timing SDIO Pin SCLK Pin CSB Pin RBIAS Pin Voltage Reference Internal Reference Operation External Reference Operation SERIAL PORT INTERFACE (SPI) HARDWARE INTERFACE MEMORY MAP READING THE MEMORY MAP TABLE RESERVED LOCATIONS DEFAULT VALUES LOGIC LEVELS APPLICATIONS INFORMATION DESIGN GUIDELINES Power and Ground Recommendations Exposed Paddle Thermal Heat Slug Recommendations EVALUATION BOARD POWER SUPPLIES INPUT SIGNALS OUTPUT SIGNALS DEFAULT OPERATION AND JUMPER SELECTION SETTINGS QUICK START PROCEDURE SCHEMATICS AND ARTWORK OUTLINE DIMENSIONS ORDERING GUIDE