Datasheet AD9257-EP (Analog Devices) - 4

AD9257-EP Data Sheet AC SPECIFICATIONS
AVDD = 1.8 V, DRVDD = 1.8 V, 2 V p-p differential input, 1.0 V internal reference, AIN = −1.0 dBFS, unless otherwise noted. CLK divider = 8 used for typical characteristics at input frequency ≥ 19.7 MHz.
Table 2. Parameter1 Temp Min Typ Max Unit
SIGNAL-TO-NOISE RATIO (SNR) fIN = 9.7 MHz 25°C 75.7 dBFS fIN = 19.7 MHz Full 72.8 75.6 dBFS fIN = 30.5 MHz 25°C 75.5 dBFS fIN = 63.5 MHz 25°C 74.9 dBFS fIN = 123.4 MHz 25°C 73.2 dBFS SIGNAL-TO-NOISE AND DISTORTION RATIO (SINAD) fIN = 9.7 MHz 25°C 75.6 dBFS fIN = 19.7 MHz Full 70.9 75.6 dBFS fIN = 30.5 MHz 25°C 75.4 dBFS fIN = 63.5 MHz 25°C 74.8 dBFS fIN = 123.4 MHz 25°C 72.8 dBFS EFFECTIVE NUMBER OF BITS (ENOB) fIN = 9.7 MHz 25°C 12.3 Bits fIN = 19.7 MHz Full 11.5 12.3 Bits fIN = 30.5 MHz 25°C 12.2 Bits fIN = 63.5 MHz 25°C 12.1 Bits fIN = 123.4 MHz 25°C 11.8 Bits SPURIOUS-FREE DYNAMIC RANGE (SFDR) fIN = 9.7 MHz 25°C 96 dBc fIN = 19.7 MHz Full 78 96 dBc fIN = 30.5 MHz 25°C 91 dBc fIN = 63.5 MHz 25°C 95 dBc fIN = 123.4 MHz 25°C 83 dBc WORST HARMONIC (SECOND OR THIRD) fIN = 9.7 MHz 25°C −99 dBc fIN = 19.7 MHz Full −98 −78 dBc fIN = 30.5 MHz 25°C −91 dBc fIN = 63.5 MHz 25°C −98 dBc fIN = 123.4 MHz 25°C −83 dBc WORST OTHER (EXCLUDING SECOND OR THIRD) fIN = 9.7 MHz 25°C −96 dBc fIN = 19.7 MHz Full −96 −86 dBc fIN = 30.5 MHz 25°C −98 dBc fIN = 63.5 MHz 25°C −95 dBc fIN = 123.4 MHz 25°C −94 dBc TWO-TONE INTERMODULATION DISTORTION (IMD)—AIN1 AND AIN2 = −7.0 dBFS fIN1 = 30 MHz, fIN2 = 32 MHz 25°C 92 dBc CROSSTALK2 25°C −98 dB Crosstalk (Overrange Condition)3 25°C −94 dB POWER SUPPLY REJECTION RATIO (PSRR)4 25°C AVDD 52 dB DRVDD 71 dB ANALOG INPUT BANDWIDTH, FULL POWER 25°C 650 MHz 1 See the AN-835 Application Note, Understanding High Speed ADC Testing and Evaluation, for definitions and for details on how these tests were completed. 2 Crosstalk is measured at 10 MHz with −1.0 dBFS analog input on one channel and no input on the adjacent channel. 3 Overrange condition is 3 dB above the full-scale input range. 4 PSRR is measured by injecting a sinusoidal signal at 10 MHz to the power supply pin and measuring the output spur on the FFT. PSRR is calculated as the ratio of the amplitudes of the spur voltage over the pin voltage, expressed in decibels. Rev. A | Page 4 of 13 Document Outline FEATURES ENHANCED PRODUCT FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS DC SPECIFICATIONS AC SPECIFICATIONS DIGITAL SPECIFICATIONS SWITCHING SPECIFICATIONS TIMING SPECIFICATIONS Timing Diagrams ABSOLUTE MAXIMUM RATINGS THERMAL CHARACTERISTICS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS OUTLINE DIMENSIONS ORDERING GUIDE