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AD7890BNZ-4 bảng dữ liệu(PDF) 4 Page - Analog Devices |
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AD7890BNZ-4 bảng dữ liệu(HTML) 4 Page - Analog Devices |
4 / 29 page AD7890 Rev. C | Page 3 of 28 SPECIFICATIONS VDD = 5 V, AGND = DGND = 0 V, REF IN = 2.5 V, fCLK IN = 2.5 MHz external, MUX OUT connect to SHA IN. All specifications TMIN to TMAX, unless otherwise noted. Table 1. Parameter A Versions1 B Versions S Version Unit Test Conditions/Comments DYNAMIC PERFORMANCE Using external CONVST, any channel Signal to (Noise + Distortion) Ratio2 70 70 70 dB min fIN = 10 kHz sine wave, fSAMPLE = 100 kHz3 Total Harmonic Distortion (THD)2 −77 −77 −77 dB max fIN = 10 kHz sine wave, fSAMPLE = 100 kHz3 Peak Harmonic or Spurious Noise2 −78 −78 −78 dB max fIN = 10 kHz sine wave, fSAMPLE = 100 kHz3 Intermodulation Distortion fa = 9 kHz, fb = 9.5 kHz, fSAMPLE = 100 kHz3 2nd Order Terms −80 −80 −80 dB typ 3rd Order Terms −80 −80 −80 dB typ Channel-to-Channel Isolation2 −80 −80 −80 dB max fIN = 1 kHz sine wave DC ACCURACY Resolution 12 12 12 Bits Min. Resolution for Which No Missing Codes Are Guaranteed 12 12 12 Bits Relative Accuracy2 ±1 ±0.5 ±1 LSB max Differential Nonlinearity2 ±1 ±1 ±1 LSB max Positive Full-Scale Error2 ±2.5 ±2.5 ±2.5 LSB max Full-Scale Error Match4 2 2 2 LSB max AD7890-2, AD7890-4 Unipolar Offset Error2 ±2 ±2 ±2 LSB max Unipolar Offset Error Match 2 2 2 LSB max AD7890-10 Only Negative Full-Scale Error2 ±2 ±2 ±2 LSB max Bipolar Zero Error2 ±5 ±5 ±5 LSB max Bipolar Zero Error Match 2 2 2 LSB max ANALOG INPUTS AD7890-10 Input Voltage Range ±10 ±10 ±10 Volts Input Resistance 20 20 20 kΩ min AD7890-4 Input Voltage Range 0 to 4.096 0 to 4.096 0 to 4.096 Volts Input Resistance 11 11 11 kΩ min AD7890-2 Input Voltage Range 0 to 2.5 0 to 2.5 0 to 2.5 Volts Input Current 50 50 200 nA max MUX OUT OUTPUT Output Voltage Range 0 to 2.5 0 to 2.5 0 to 2.5 Volts Output Resistance AD7890-10, AD7890-4 3/5 3/5 3/5 kΩ min/kΩ max AD7890-2 2 2 2 kΩ max Assuming VIN is driven from low impedance SHA IN INPUT Input Voltage Range 0 to 2.5 0 to 2.5 0 to 2.5 Volts Input Current ±50 ±50 ±50 nA max 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 kΩ min Resistor connected to internal reference node Input Capacitance5 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 2 2 2 kΩ nom |
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