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AD9645 数据表(PDF) 4 Page - Analog Devices |
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AD9645 数据表(HTML) 4 Page - Analog Devices |
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4 / 36 page  AD9645 Data Sheet Rev. 0 | Page 4 of 36 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. Table 2. Parameter1 Temp AD9645-80 AD9645-125 Unit Min Typ Max Min Typ Max SIGNAL-TO-NOISE RATIO (SNR) fIN = 9.7 MHz 25°C 75.6 75.2 dBFS fIN = 30.5 MHz 25°C 75.4 75.0 dBFS fIN = 70 MHz Full 73.1 74.5 72.8 74.3 dBFS fIN = 139.5 MHz 25°C 72.1 72.5 dBFS fIN = 200.5 MHz 25°C 70.0 70.3 dBFS SIGNAL-TO-NOISE-AND-DISTORTION RATIO (SINAD) fIN = 9.7 MHz 25°C 75.6 75.1 dBFS fIN = 30.5 MHz 25°C 75.2 75.0 dBFS fIN = 70 MHz Full 72.7 74.4 72.4 74.2 dBFS fIN = 139.5 MHz 25°C 71.7 72.4 dBFS fIN = 200.5 MHz 25°C 69.7 70.0 dBFS EFFECTIVE NUMBER OF BITS (ENOB) fIN = 9.7 MHz 25°C 12.3 12.2 Bits fIN = 30.5 MHz 25°C 12.2 12.2 Bits fIN = 70 MHz Full 11.8 12.1 11.7 12.0 Bits fIN = 139.5 MHz 25°C 11.6 11.7 Bits fIN = 200.5 MHz 25°C 11.3 11.3 Bits SPURIOUS-FREE DYNAMIC RANGE (SFDR) fIN = 9.7 MHz 25°C 96 93 dBc fIN = 30.5 MHz 25°C 91 97 dBc fIN = 70 MHz Full 82 96 82 91 dBc fIN = 139.5 MHz 25°C 82 91 dBc fIN = 200.5 MHz 25°C 82 81 dBc WORST HARMONIC (SECOND OR THIRD) fIN = 9.7 MHz 25°C −96 −93 dBc fIN = 30.5 MHz 25°C −91 −97 dBc fIN = 70 MHz Full −96 −83 −91 −82 dBc fIN = 139.5 MHz 25°C −82 −93 dBc fIN = 200.5 MHz 25°C −82 −81 dBc WORST OTHER HARMONIC OR SPUR fIN = 9.7 MHz 25°C −99 −96 dBc fIN = 30.5 MHz 25°C −97 −99 dBc fIN = 70 MHz Full −99 −82 −96 −84 dBc fIN = 139.5 MHz 25°C −93 −91 dBc fIN = 200.5 MHz 25°C −91 −87 dBc TWO-TONE INTERMODULATION DISTORTION (IMD)—AIN1 AND AIN2 = −7.0 dBFS fIN1 = 70.5 MHz, fIN2 = 72.5 MHz 25°C −93 −93 dBc CROSSTALK2 25°C −97 −97 dB CROSSTALK (OVERRANGE CONDITION)3 25°C −97 −97 dB POWER SUPPLY REJECTION RATIO (PSRR)4 AVDD 25°C 42 42 dB DRVDD 25°C 67 67 dB ANALOG INPUT BANDWIDTH, FULL POWER 25°C 650 650 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 70 MHz with −1.0 dBFS analog input on one channel and no input on the adjacent channel. 3 Overrange condition is specified with 3 dB of 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 amplitude of the spur voltage over the amplitude of the pin voltage, expressed in decibels (dB). |
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