Datasheet AD9261 (Analog Devices) - 5

link to page 5 link to page 5 link to page 5
AD9261 AC 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 2. Parameter1 Temp Min Typ Max Unit
SIGNAL-TO-NOISE RATIO (SNR) fIN = 2.4 MHz Full 81 83 dB fIN = 4.2 MHz 25°C 83 dB fIN = 8.4 MHz 25°C 83 dB EFFECTIVE NUMBER OF BITS (ENOB) fIN = 2.4 MHz 25°C 13.5 Bits fIN = 4.2 MHz 25°C 13.5 Bits fIN = 8.4 MHz 25°C 13.5 Bits SPURIOUS-FREE DYNAMIC RANGE (SFDR) fIN = 2.4 MHz Full 87 80 dBc fIN = 4.2 MHz 25°C 87 dBc fIN = 8.4 MHz 25°C <120 dBc NOISE SPECTRAL DENSITY (NSD) AIN= −2 dBFS Full −155 −153 dB/Hz AIN = −40 dBFS Full −156 −154.5 dB/Hz NOISE FIGURE2 25°C 15 dB TWO-TONE SFDR fIN1 = 2.1 MHz at −8 dBFS, fIN2 = 2.4 MHz at −8 dBFS 25°C 93 dBc fIN1 = 3.6 MHz at −8 dBFS, fIN2 = 4.2 MHz at −8 dBFS 25°C 92.5 dBc fIN1 = 7.2 MHz at −8 dBFS, fIN2 = 8.4 MHz at −8 dBFS 25°C 92.5 dBc ANALOG INPUT BANDWIDTH 25°C 10 MHz APERTURE JITTER 25°C 1 ps rms 1 See the AN-835 Application Note, Understanding High Speed ADC Testing and Evaluation, for a complete set of definitions. 2 Noise figure with respect to 50 Ω. AD9261 internal impedance is 1000 Ω differential. See the AN-835 Application Note for a definition.
DIGITAL DECIMATION FILTERING CHARACTERISTICS
All power supplies set to 1.8 V, 640 MHz sample rate, 0.5 V internal reference, PLL disabled, AIN = −2.0 dBFS, unless otherwise noted.
Table 3. 2.5 MHz BW 5 MHZ BW 10 MHz BW Parameter1 Min Typ Max Min Typ Max Min Typ Max Unit
Pass-Band Transition 2.5 3.75 5 6.5 10 13 MHz Pass-Band Ripple <0.1 <0.1 <0.1 dB Stop Band 3.75 MHz − fS/2 6.5 MHz − fS/2 13 MHz − fS/2 MHz Stop Band Attenuation >85 >85 >85 dB 1 See the AN-835 Application Note, Understanding High Speed ADC Testing and Evaluation, for a complete set of definitions. Rev. 0 | Page 4 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