Datasheet AD9248 (Analog Devices) - 7
| 制造商 | Analog Devices |
| 描述 | Dual 14-Bit, 20/40/65 MSPS, 3 V Analog-to-Digital Converter |
| 页数 / 页 | 49 / 7 — AD9248. Test. AD9248BST/BCP-20. AD9248BST/BCP-40. AD9248BST/BCP-65. … |
| 修订版 | B |
| 文件格式/大小 | PDF / 1.1 Mb |
| 文件语言 | 英语 |
AD9248. Test. AD9248BST/BCP-20. AD9248BST/BCP-40. AD9248BST/BCP-65. Parameter. Temp. Level. Min. Typ. Max. Unit. DIGITAL SPECIFICATIONS. Table 3
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AD9248 Test AD9248BST/BCP-20 AD9248BST/BCP-40 AD9248BST/BCP-65 Parameter Temp Level Min Typ Max Min Typ Max Min Typ Max Unit
WORST OTHER SPUR (NONSECOND or THIRD) fINPUT = 2.4 MHz Full V 88.0 88.0 85.5 dBc 25°C I 83.3 89.0 83.5 89.0 81.0 86.0 dBc fINPUT = 9.7 MHz Full V 87.0 dBc 25°C I 83.1 88.0 dBc fINPUT = 19.6 MHz Full V 88.0 dBc 25°C I 82.6 88.5 dBc fINPUT = 35 MHz Full V 85.5 dBc 25°C I 79.8 86.0 dBc fINPUT = 100 MHz 25°C V 79.0 81.0 75.0 dBc SPURIOUS-FREE DYNAMIC RANGE (SFDR) 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 CROSSTALK Full V −85.0 −85.0 −85.0 dB
DIGITAL SPECIFICATIONS
AVDD = 3 V, DRVDD = 2.5 V, maximum sample rate, CLK_A = CLK_B; AIN = −0.5 dBFS differential input, 1.0 V internal reference, TMIN to TMAX, DCS enabled, unless otherwise noted.
Table 3. Test AD9248BST/BCP-20 AD9248BST-40 AD9248BST-65 Parameter Temp Level Min Typ Max Min Typ Max Min Typ Max Unit
LOGIC INPUTS High Level Input Voltage Full IV 2.0 2.0 2.0 V Low Level Input Voltage Full IV 0.8 0.8 0.8 V High Level Input Current Full IV −10 +10 −10 +10 −10 +10 μA Low Level Input Current Full IV −10 +10 −10 +10 −10 +10 μA Input Capacitance Full IV 2 2 2 pF LOGIC OUTPUTS1 High Level Output Voltage Full IV DRVDD − DRVDD − DRVDD − V 0.05 0.05 0.05 Low Level Output Voltage Full IV 0.05 0.05 0.05 V 1 Output voltage levels measured with capacitive load only on each output. Rev. B | Page 6 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
AD9248 Test AD9248BST/BCP-20 AD9248BST/BCP-40 AD9248BST/BCP-65 Parameter Temp Level Min Typ Max Min Typ Max Min Typ Max Unit
WORST OTHER SPUR (NONSECOND or THIRD) fINPUT = 2.4 MHz Full V 88.0 88.0 85.5 dBc 25°C I 83.3 89.0 83.5 89.0 81.0 86.0 dBc fINPUT = 9.7 MHz Full V 87.0 dBc 25°C I 83.1 88.0 dBc fINPUT = 19.6 MHz Full V 88.0 dBc 25°C I 82.6 88.5 dBc fINPUT = 35 MHz Full V 85.5 dBc 25°C I 79.8 86.0 dBc fINPUT = 100 MHz 25°C V 79.0 81.0 75.0 dBc SPURIOUS-FREE DYNAMIC RANGE (SFDR) 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 CROSSTALK Full V −85.0 −85.0 −85.0 dB
DIGITAL SPECIFICATIONS
AVDD = 3 V, DRVDD = 2.5 V, maximum sample rate, CLK_A = CLK_B; AIN = −0.5 dBFS differential input, 1.0 V internal reference, TMIN to TMAX, DCS enabled, unless otherwise noted.
Table 3. Test AD9248BST/BCP-20 AD9248BST-40 AD9248BST-65 Parameter Temp Level Min Typ Max Min Typ Max Min Typ Max Unit
LOGIC INPUTS High Level Input Voltage Full IV 2.0 2.0 2.0 V Low Level Input Voltage Full IV 0.8 0.8 0.8 V High Level Input Current Full IV −10 +10 −10 +10 −10 +10 μA Low Level Input Current Full IV −10 +10 −10 +10 −10 +10 μA Input Capacitance Full IV 2 2 2 pF LOGIC OUTPUTS1 High Level Output Voltage Full IV DRVDD − DRVDD − DRVDD − V 0.05 0.05 0.05 Low Level Output Voltage Full IV 0.05 0.05 0.05 V 1 Output voltage levels measured with capacitive load only on each output. Rev. B | Page 6 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