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AD8285 Scheda tecnica(PDF) 4 Page - Analog Devices |
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AD8285 Scheda tecnica(HTML) 4 Page - Analog Devices |
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4 / 27 page  AD8285 Data Sheet Rev. B | Page 4 of 27 Parameter2 Test Conditions/Comments Min Typ Max Unit ADC Resolution 12 Bits Maximum Sample Rate 72 MSPS Signal-to-Noise Ratio (SNR) fIN = 1 MHz 68.5 dB Signal-to-Noise and Distortion (SINAD) 66 dB Signal-to-Noise Ratio Full Scale (SNRFS) 68 dB Differential Nonlinearity (DNL) Guaranteed no missing codes 1 LSB Integral Nonlinearity (INL) 10 LSB Effective Number of Bits (ENOB) 10.67 LSB ADC OUTPUT CHARACTERISTICS Maximum Capacitor Load Per bit 20 pF IDVDD33 Peak Current with Capacitor Load Peak current per bit when driving 20 pF load; can be programmed via the SPI port, if required 40 mA ADC REFERENCE Output Voltage Error VREF = 1.024 V ±25 mV Load Regulation At 1.0 mA, VREF = 1.024 V 2 mV Input Resistance 6 kΩ FULL CHANNEL CHARACTERISTICS LNA, PGA, AAF, and ADC channels SNRFS fIN = 1 MHz Gain = 16 dB 68 dB Gain = 22 dB 68 dB Gain = 28 dB 68 dB Gain = 34 dB 66 dB SINAD fIN = 1 MHz Gain = 16 dB 67 dB Gain = 22 dB 68 dB Gain = 28 dB 67 dB Gain = 34 dB 66 dB Spurious-Free Dynamic Range (SFDR) fIN = 1 MHz Gain = 16 dB 68 dB Gain = 22 dB 74 dB Gain = 28 dB 74 dB Gain = 34 dB 73 dB Harmonic Distortion Second Harmonic fIN = 1 MHz at −10 dBFS, gain = 16 dB −70 dBc fIN = 1 MHz at −10 dBFS, gain = 34 dB −70 dBc Third Harmonic fIN = 1 MHz at −10 dBFS, gain = 16 dB −66 dBc fIN = 1 MHz at −10 dBFS, gain = 34 dB −75 dBc IM3 Distortion fIN1 = 1 MHz, fIN2 = 1.1 MHz, −1 dBFS, gain = 34 dB −69 dBc Gain Response Time 600 ns Overdrive Recovery Time 200 ns 1 x stands for A, B, C, or D. 2 See the AN-835 Application Note, Understanding High Speed ADC Testing and Evaluation, for a complete set of definitions, and how these tests were completed. |
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