link to page 17 AD9248TestAD9248BST/BCP-20AD9248BST/BCP-40AD9248BST/BCP-65ParameterTempLevelMinTypMaxMinTypMaxMinTypMaxUnit MATCHING CHARACTERISTICS Offset Error 25°C I ±0.19 ±1.56 ±0.19 ±1.56 ±0.25 ±1.74 % FSR (Nonshared Reference Mode) Offset Error 25°C I ±0.19 ±1.56 ±0.19 ±1.56 ±0.25 ±1.74 % FSR (Shared Reference Mode) Gain Error 25°C I ±0.07 ±1.43 ±0.07 ±1.43 ±0.07 ±1.47 % FSR (Nonshared Reference Mode) Gain Error 25°C I ±0.01 ±0.06 ±0.01 ±0.06 ±0.01 ±0.10 % FSR (Shared Reference Mode) 1 Gain error and gain temperature coefficient are based on the ADC only (with a fixed 1.0 V external reference). 2 Measured at maximum clock rate with a low frequency sine wave input and approximately 5 pF loading on each output bit. 3 Input capacitance refers to the effective capacitance between one differential input pin and AVSS. Refer to Figure 2 f 9 or the equivalent analog input structure. 4 Measured with dc input at maximum clock rate. 5 Standby power is measured with the CLK_A and CLK_B pins inactive (that is, set to AVDD or AGND). Rev. B | Page 4 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
