link to page 6 AD9261DIGITAL SPECIFICATIONS All power supplies set to 1.8 V, 640 MHz sample rate, 0.5 V internal reference, PLL disabled, 40 MSPS output data rate, AIN = −2.0 dBFS, unless otherwise noted. Table 4. Parameter1TempMin Typ MaxUnit DIFFERENTIAL CLOCK INPUTS (CLK+, CLK−) Logic Compliance CMOS/LVPECL Differential Input Voltage Full 0.4 0.8 2 V p-p Input Common-Mode Range Full 0.3 0.450 0.5 V High Level Input Current Full −60 +60 μA Low Level Input Current Full −60 +60 μA Input Resistance Full 20 kΩ Input Capacitance Full 1 pF LOGIC INPUTS (SCLK) High Level Input Voltage Full 1.2 DRVDD + 0.3 V Low Level Input Voltage Full 0 0.8 V High Level Input Current Full −50 −75 μA Low Level Input Current Full −10 +10 μA Input Resistance Full 30 kΩ Input Capacitance Full 2 pF LOGIC INPUTS (SDIO, CSB, RESET) High Level Input Voltage Full 1.2 DRVDD + 0.3 V Low Level Input Voltage Full 0 0.8 V High Level Input Current Full −10 +10 μA Low Level Input Current Full +40 +135 μA Input Resistance Full 26 kΩ Input Capacitance Full 5 pF DIGITAL OUTPUTS DRVDD = 3.3 V High Level Output Voltage (VOH, IOH = 50 μA) Full 3.29 V High Level Output Voltage (VOH, IOH = 0.5 mA) Full 3.25 V Low Level Output Voltage (VOL, IOL = 1.6 mA) Full 0.2 V Low Level Output Voltage (VOL, IOL = 50 μA) Full 0.05 V DRVDD = 1.8 V High Level Output Voltage (VOH, IOH = 50 μA) Full 1.79 V High Level Output Voltage (VOH, IOH = 0.5 mA) Full 1.75 V Low Level Output Voltage (VOL, IOL = 1.6 mA) Full 0.2 V Low Level Output Voltage (VOL, IOL = 50 μA) Full 0.05 V 1 See the AN-835 Application Note, Understanding High Speed ADC Testing and Evaluation, for a complete set of definitions. Rev. 0 | Page 5 of 28 Document Outline Features Applications Functional Block Diagram General Description Product Highlights Revision History Specifications DC Specifications AC Specifications Digital Decimation Filtering Characteristics Digital Specifications Switching Specifications Timing Diagram Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Equivalent Circuits Theory of Operation Analog Input Considerations Input Common Mode Differential Input Configurations Voltage Reference Internal Reference Connection External Reference Operation Clock Input Considerations Direct Clocking Internal PLL Clock Distribution External PLL Control PLL Autoband Select Jitter Considerations Power Dissipation and Standby Mode Digital Engine Bandwidth Selection Decimation Filters Sample Rate Converter Cascaded Filter Responses Digital Outputs Digital Output Format Overrange (OR) Condition Timing Serial Port Interface (SPI) Configuration Using the SPI Hardware Interface Memory Map Memory Map Definitions Outline Dimensions Ordering Guide