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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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AD7894 Scheda tecnica(PDF) 2 Page - Analog Devices |
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AD7894 Scheda tecnica(HTML) 2 Page - Analog Devices |
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2 / 12 page  –2– REV. 0 AD7894–SPECIFICATIONS (VDD = +5 V 5%, GND = 0 V, REF IN = +2.5 V. All specifications TMIN to TMAX unless otherwise noted.) Parameter A Versions l B Versions 1 Units Test Conditions/Comments DYNAMIC PERFORMANCE 2 Signal to (Noise + Distortion) Ratio 3 @ +25 °C 78 78 dB min fIN = 70 kHz Sine Wave, fSAMPLE = 160 kHz TMIN to TMAX 77 77 dB min See Figure 14 Total Harmonic Distortion (THD) 3 –86 –86 dB max fIN = 10 kHz Sine Wave, fSAMPLE = 160 kHz, Typically –87 dB. See Figure 15 Peak Harmonic or Spurious Noise 3 –92 –92 dB typ fIN = 10 kHz Sine Wave, fSAMPLE = 160 kHz Intermodulation Distortion (IMD) 3 fa = 9 kHz, fb = 9.5 kHz, fSAMPLE = 160 kHz 2nd Order Terms –92 –92 dB typ 3rd Order Terms –92 –92 dB typ DC ACCURACY Resolution 14 14 Bits Minimum Resolution for Which No Missing Codes Are Guaranteed 14 14 Bits Relative Accuracy 3 ±2 ±1.5 LSB max Differential Nonlinearity 3 –1 to +1.5 –1 to +1.5 LSB max AD7894-2 Positive Gain Error 3 ±12 ±10 LSB max Unipolar Offset Error ±8 ±6 LSB max AD7894-10, AD7894-3 Only Positive Gain Error 3 ±8 ±6 LSB max Negative Gain Error 3 ±8 ±6 LSB max Bipolar Zero Error ±10 ±8 LSB max ANALOG INPUT AD7894-10 Input Voltage Range ±10 ±10 V Input Current 2 2 mA max See Analog Input Section AD7894-3 Input Voltage Range ±2.5 ±2.5 V Input Current 1.5 1.5 mA max See Analog Input Section AD7894-2 Input Voltage Range 0 to +2.5 0 to +2.5 V Input Current 500 500 nA max REFERENCE INPUT REF IN Input Voltage Range 2.375/2.625 2.375/2.625 V min/V max 2.5 V ± 5% Input Current 1 1 µA max Input Capacitance 4 10 10 pF max LOGIC INPUTS Input High Voltage, VINH 2.4 2.4 V min VDD = 5 V ± 5% Input Low Voltage, VINL 0.8 0.8 V max VDD = 5 V ± 5% Input Current, IIN ±10 ±10 µA max VIN = 0 V to VDD Input Capacitance, CIN 4 10 10 pF max LOGIC OUTPUTS Output High Voltage, VOH 4.0 4.0 V min ISOURCE = 400 µA Output Low Voltage, VOL 0.4 0.4 V max ISINK = 1.6 mA Output Coding AD7894-10, AD7894-3 Twos Complement AD7894-2 Straight (Natural) Binary CONVERSION RATE Conversion Time Mode 1 Operation 5 5 µs max Mode 2 Operation 5 10 10 µs max Track/Hold Acquisition Time 3 0.35 0.35 µs max SAMPLE AND HOLD –3 dB Small Signal Bandwidth 7.5 7.5 MHz typ Aperture Jitter 50 50 ps typ |
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