Datasheet AD7892 (Analog Devices) - 3

(VDD = +5 V
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5%, AGND = DGND = 0 V, REF IN = +2.5 V. All specifications TMIN to TMAX AD7892–SPECIFICATIONS unless otherwise noted.) Parameter A Versions1 B Versions S Version2 Unit Test Conditions/Comments
DYNAMIC PERFORMANCE AD7892-1, AD7892-2 fIN = 100 kHz. fSAMPLE = 500 kSPS Signal to (Noise + Distortion) Ratio3 70 70 70 dB min Total Harmonic Distortion3 –78 –78 –78 dB max typ –84 dB Peak Harmonic or Spurious Noise3 –79 –79 –79 dB max Intermodulation Distortion3 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 Distortion3 –78 –78 dB max Peak Harmonic or Spurious Noise3 –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 Accuracy3 ±1.5 ±1 ±1 LSB max Differential Nonlinearity3 ±1 ±1 ±1 LSB max AD7892-1 Positive Full-Scale Error3 ±4 ±4 ±5 LSB max Negative Full-Scale Error3 ±4 ±4 ±5 LSB max Bipolar Zero Error3 ±3 ±2 ±3 LSB max AD7892-3 Positive Full-Scale Error3 ±4 ±4 LSB max Negative Full-Scale Error3 ±4 ±4 LSB max Bipolar Zero Error3 ±4 ±3 LSB max AD7892-2 Positive Full-Scale Error3 ±5 ±5 ±5 LSB max Unipolar Offset Error3 ±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 kΩ 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 kΩ 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 kΩ min Resistor Connected to Internal Reference Node Input Capacitance4 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 T ± MIN 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 kΩ 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, I ± IN 10 ±10 ±10 µA max VIN = 0 V to VDD Input Capacitance, C 4 IN 10 10 10 pF max –2– REV. C