Datasheet AD9218 (Analog Devices) - 5

AD9218 DIGITAL SPECIFICATIONS
VDD = 3.0 V, VD = 3.0 V; external reference, unless otherwise noted.
Table 2. Test AD9218BST-40/-65 AD9218BST-80/-105 Parameter Temp Level Min Typ Max Min Typ Max Unit
DIGITAL INPUTS Encode Input Common Full V V Mode D/2 VD/2 V Encode 1 Voltage Full VI 2 2 V Encode 0 Voltage Full VI 0.8 0.8 V Encode Input Resistance Full VI 1.8 2.0 2.3 1.8 2.0 2.3 kΩ Logic 1 Voltage—S1, S2, Full VI 2 2 V DFS Logic 0 Voltage—S1, S2, Full VI 0.8 0.8 V DFS Logic 1 Current—S1 Full VI –50 ±0 50 –50 ±0 50 μA Logic 0 Current—S1 Full VI –400 –230 –50 –400 –230 –50 μA Logic 1 Current—S2 Full VI 50 230 400 50 230 400 μA Logic 0 Current—S2 Full VI –50 ±0 50 –50 ±0 50 μA Logic 1 Current—DFS Full VI 30 100 200 30 100 200 μA Logic 0 Current—DFS Full VI –400 –230 –50 –400 –230 –50 μA Input Capacitance—S1, 25°C V 2 2 pF S2, Encode Inputs Input Capacitance DFS 25°C V 4.5 4.5 pF DIGITAL OUTPUTS Logic 1 Voltage Full VI 2.45 2.45 V Logic 0 Voltage Full VI 0.05 0.05 V Output Coding Twos complement or offset binary Twos complement or offset binary Rev. C | Page 4 of 28 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS DC SPECIFICATIONS DIGITAL SPECIFICATIONS AC SPECIFICATIONS SWITCHING SPECIFICATIONS TIMING DIAGRAMS ABSOLUTE MAXIMUM RATINGS EXPLANATION OF TEST LEVELS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TERMINOLOGY EQUIVALENT CIRCUITS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION USING THE AD9218 ENCODE INPUT DIGITAL OUTPUTS ANALOG INPUT VOLTAGE REFERENCE TIMING USER SELECT OPTIONS APPLICATION INFORMATION AD9218/AD9288 CUSTOMER PCB BOM EVALUATION BOARD POWER CONNECTOR ANALOG INPUTS VOLTAGE REFERENCE CLOCKING DATA OUTPUTS DATA FORMAT/GAIN TIMING TROUBLESHOOTING OUTLINE DIMENSIONS ORDERING GUIDE