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AD7825BRU 데이터시트(PDF) 3 Page - Analog Devices |
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AD7825BRU 데이터시트(HTML) 3 Page - Analog Devices |
3 / 28 page AD7822/AD7825/AD7829 Rev. C | Page 3 of 28 SPECIFICATIONS VDD = 3 V ± 10%, VDD = 5 V ± 10%, GND = 0 V, VREF IN/OUT = 2.5 V. All specifications −40°C to +85°C, unless otherwise noted. Table 1. Parameter Version B Unit Test Condition/Comment DYNAMIC PERFORMANCE fIN = 30 kHz, fSAMPLE = 2 MHz Signal to (Noise + Distortion) Ratio1 48 dB min Total Harmonic Distortion1 −55 dB max Peak Harmonic or Spurious Noise1 −55 dB max Intermodulation Distortion1 fa = 27.3 kHz, fb = 28.3 kHz Second-Order Terms −65 dB typ Third-Order Terms −65 dB typ Channel-to-Channel Isolation1 −70 dB typ fIN = 20 kHz DC ACCURACY Resolution 8 Bits Minimum Resolution for Which No Missing Codes Are Guaranteed 8 Bits Integral Nonlinearity (INL)1 ±0.75 LSB max Differential Nonlinearity (DNL)1 ±0.75 LSB max Gain Error1 ±2 LSB max Gain Error Match1 ±0.1 LSB typ Offset Error1 ±1 LSB max Offset Error Match1 ±0.1 LSB typ ANALOG INPUTS2 See Analog Input section VDD = 5 V ± 10% Input voltage span = 2.5 V VIN1 to VIN8 Input Voltage VDD V max 0 V min VMID Input Voltage VDD − 1.25 V max Default VMID = 1.25 V 1.25 V min VDD = 3 V ± 10% Input voltage span = 2 V VIN1 to VIN8 Input Voltage VDD V max 0 V min VMID Input Voltage VDD − 1 V max Default VMID = 1 V 1 V min VIN Input Leakage Current ±1 μA max VIN Input Capacitance 15 pF max VMID Input Impedance 6 kΩ typ REFERENCE INPUT VREF IN/OUT Input Voltage Range 2.55 V max 2.5 V + 2% 2.45 V min 2.5 V − 2% Input Current 1 μA typ 100 μA max ON-CHIP REFERENCE Nominal 2.5 V Reference Error ±50 mV max Temperature Coefficient 50 ppm/°C typ LOGIC INPUTS Input High Voltage, VINH 2.4 V min VDD = 5 V ± 10% Input Low Voltage, VINL 0.8 V max VDD = 5 V ± 10% Input High Voltage, VINH 2 V min VDD = 3 V ± 10% Input Low Voltage, VINL 0.4 V max VDD = 3 V ± 10% Input Current, IIN ±1 μA max 10 nA typical, VIN = 0 V to VDD Input Capacitance, CIN 10 pF max |
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