Datasheet AD9248 (Analog Devices) - 6

AD9248 AC SPECIFICATIONS
AVDD = 3 V, DRVDD = 2.5 V, maximum sample rate, CLK_A = CLK_B; AIN = −0.5 dBFS differential input, 1.0 V external reference, TMIN to TMAX, DCS Enabled, unless otherwise noted.
Table 2. Test AD9248BST/BCP-20 AD9248BST/BCP-40 AD9248BST/BCP-65 Parameter Temp Level Min Typ Max Min Typ Max Min Typ Max Unit
SIGNAL-TO-NOISE RATIO (SNR) fINPUT = 2.4 MHz Full V 73.4 73.1 72.8 dB 25°C IV 73.1 73.7 72.8 73.4 72.3 73.1 dB fINPUT = 9.7 MHz Full V 72.9 dB 25°C IV 72.4 73.1 dB fINPUT = 19.6 MHz Full V 72.7 dB 25°C IV 72.3 72.9 dB fINPUT = 35 MHz Full V 71.5 dB 25°C IV 71.2 71.6 dB fINPUT = 100 MHz 25°C V 70 69.5 69.0 dB SIGNAL-TO-NOISE AND DISTORTION RATIO (SINAD) fINPUT = 2.4 MHz Full V 73.0 72.8 72.5 dB 25°C IV 72.2 73.2 72.0 73.0 71.7 72.7 dB fINPUT = 9.7 MHz Full V 72.0 dB 25°C IV 70.9 72.2 dB fINPUT = 19.6 MHz Full V 72.1 dB 25°C IV 71.0 72.3 dB fINPUT = 35 MHz Full V 70.9 dB 25°C IV 70.0 71.0 dB fINPUT = 100 MHz 25°C V 69.5 69.0 68.5 dB EFFECTIVE NUMBER OF BITS (ENOB) fINPUT = 2.4 MHz Full V 11.8 11.8 11.8 Bits 25°C IV 11.7 11.8 11.7 11.8 11.6 11.8 Bits fINPUT = 9.7 MHz Full V 11.7 Bits 25°C IV 11.5 11.7 Bits fINPUT = 19.6 MHz Full V 11.7 Bits 25°C IV 11.5 11.7 Bits fINPUT = 35 MHz Full V 11.5 Bits 25°C IV 11.3 11.5 Bits fINPUT = 100 MHz 25°C V 11.3 11.2 11.2 Bits WORST HARMONIC (SECOND or THIRD) fINPUT = 2.4 MHz Full V 86.0 85.0 84.0 dBc 25°C IV 77.5 87.5 77.5 86.0 77.5 86.0 dBc fINPUT = 9.7 MHz Full V 83.0 dBc 25°C I 76.1 84.0 dBc fINPUT = 19.6 MHz Full V 83.0 dBc 25°C I 76.0 84.0 dBc fINPUT = 35 MHz Full V 80.0 dBc 25°C I 73.0 80.5 dBc Rev. B | Page 5 of 48 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS DC SPECIFICATIONS AC SPECIFICATIONS DIGITAL SPECIFICATIONS SWITCHING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS EXPLANATION OF TEST LEVELS ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TERMINOLOGY TYPICAL PERFORMANCE CHARACTERISTICS EQUIVALENT CIRCUITS THEORY OF OPERATION ANALOG INPUT Differential Input Configurations Single-Ended Input Configuration CLOCK INPUT AND CONSIDERATIONS POWER DISSIPATION AND STANDBY MODE DIGITAL OUTPUTS TIMING DATA FORMAT VOLTAGE REFERENCE Internal Reference Connection External Reference Operation AD9248 LQFP EVALUATION BOARD CLOCK CIRCUITRY ANALOG INPUTS REFERENCE CIRCUITRY DIGITAL CONTROL LOGIC OUTPUTS LQFP EVALUATION BOARD BILL OF MATERIALS (BOM) LQFP EVALUATION BOARD SCHEMATICS LQFP PCB LAYERS DUAL ADC LFCSP PCB POWER CONNECTOR ANALOG INPUTS OPTIONAL OPERATIONAL AMPLIFIER CLOCK VOLTAGE REFERENCE DATA OUTPUTS LFCSP EVALUATION BOARD BILL OF MATERIALS (BOM) LFCSP PCB SCHEMATICS LFCSP PCB LAYERS THERMAL CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE