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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AD7892 датащи(PDF) 2 Page - Analog Devices |
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AD7892 датащи(HTML) 2 Page - Analog Devices |
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2 / 14 page  (VDD = +5 V 5%, AGND = DGND = 0 V, REF IN = +2.5 V. All specifications TMIN to TMAX unless otherwise noted.) AD7892–SPECIFICATIONS Parameter A Versions 1 B Versions S Version 2 Unit Test Conditions/Comments DYNAMIC PERFORMANCE AD7892-1, AD7892-2 fIN = 100 kHz. fSAMPLE = 500 kSPS Signal to (Noise + Distortion) Ratio 3 70 70 70 dB min Total Harmonic Distortion3 –78 –78 –78 dB max typ –84 dB Peak Harmonic or Spurious Noise 3 –79 –79 –79 dB max Intermodulation Distortion 3 fa = 49 kHz, fb = 50 kHz 2nd Order Terms –78 –78 –78 dB max typ –84 dB 3rd Order Terms –78 –78 –78 dB max typ –84 dB AD7892-3 fIN = 100 kHz. fSAMPLE = 600 kSPS Signal to (Noise + Distortion) Ratio3 70 70 dB min Total Harmonic Distortion 3 –78 –78 dB max Peak Harmonic or Spurious Noise 3 –79 –79 dB max Intermodulation Distortion3 fa = 49 kHz, fb = 50 kHz 2nd Order Terms –78 –78 dB max 3rd Order Terms –78 –78 dB max DC ACCURACY Resolution 12 12 12 Bits Minimum Resolution for Which No Missing Codes Are Guaranteed 12 12 12 Bits Relative Accuracy 3 ±1.5 ±1 ±1 LSB max Differential Nonlinearity 3 ±1 ±1 ±1 LSB max AD7892-1 Positive Full-Scale Error 3 ±4 ±4 ±5 LSB max Negative Full-Scale Error 3 ±4 ±4 ±5 LSB max Bipolar Zero Error 3 ±3 ±2 ±3 LSB max AD7892-3 Positive Full-Scale Error 3 ±4 ±4 LSB max Negative Full-Scale Error 3 ±4 ±4 LSB max Bipolar Zero Error 3 ±4 ±3 LSB max AD7892-2 Positive Full-Scale Error3 ±5 ±5 ±5 LSB max Unipolar Offset Error 3 ±4 ±3 ±4 LSB max ANALOG INPUT AD7892-1 Input Voltage Range ±10 ±10 ±10 Volts Input Applied to VIN1 with VIN2 Grounded Input Voltage Range ±5 ±5 ±5 Volts Input Applied to VIN1 and VIN2 Input Resistance 8 8 8 k Ω min Input Applied to VIN1 with VIN2 Grounded AD7892-2 Input Voltage Range on VIN1 0 to +2.5 0 to +2.5 0 to +2.5 Volts Input Applied to VIN1 Input Current 10 10 50 nA max Input Voltage Range on VIN2 ±50 ±50 ±50 mV max AD7892-3 Input Voltage Range on VIN1 ±2.5 ±2.5 Volts Input Applied to VIN1 Input Resistance 2 2 k Ω min REFERENCE OUTPUT/INPUT REF IN Input Voltage Range 2.375/2.625 2.375/2.625 2.375/2.625 V min/V max 2.5 V ± 5% Input Impedance 1.6 1.6 1.6 k Ω min Resistor Connected to Internal Reference Node Input Capacitance 4 10 10 10 pF max REF OUT Output Voltage 2.5 2.5 2.5 V nom REF OUT Error @ +25 °C ±10 ±10 ±10 mV max TMIN to TMAX ±20 ±20 ±25 mV max REF OUT Temperature Coefficient 25 25 25 ppm/ °C typ REF OUT Output Impedance 5.5 5.5 5.5 k Ω nom LOGIC INPUTS Input High Voltage, VINH 2.4 2.4 2.4 V min VDD = 5 V ± 5% Input Low Voltage, VINL 0.8 0.8 0.8 V max VDD = 5 V ± 5% Input Current, IIN ±10 ±10 ±10 µA max VIN = 0 V to VDD Input Capacitance, CIN 4 10 10 10 pF max –2– REV. C |
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