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AD7871KN Datasheet(PDF) 2 Page - Analog Devices |
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AD7871KN Datasheet(HTML) 2 Page - Analog Devices |
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2 / 16 page  REV. D –2– AD7871/AD7872–SPECIFICATIONS (VDD = +5 V 5%, VSS = –5 V 5%, AGND = DGND = O V, fCLK = 2 MHz external, fSAMPLE = 83 kHz unless otherwise noted.) All Specifications TMIN to TMAX unless otherwise noted. J, A K T, B Parameter Versions 1 Version1 Versions1 Units Test Conditions/Comments DYNAMIC PERFORMANCE 2 Signal-to-Noise Ratio 3 (SNR) @ +25 °C 80 80 79 dB min VIN = 10 kHz Sine Wave TMIN to TMAX 80 80 79 dB min SNR is Typically 82 dB for <VIN<41.5 kHz; Total Harmonic Distortion (THD) –86 –88 dB max VIN = 10 kHz Sine Wave –85 dB typ Peak Harmonic or Spurious Noise –86 –88 dB max VIN = 10 kHz. –85 dB typ Intermodulation Distortion (IMD) Second Order Terms –86 –88 dB max fa = 9 kHz, fb = 9.5 kHz, fSAMPLE = 50 kHz –85 dB typ Third Order Terms –86 –88 dB max fa = 9 kHz, fb = 9.5 kHz, fSAMPLE = 50 kHz –85 dB typ Track/Hold Acquisition Time 2 2 2 µs max DC ACCURACY Resolution 14 14 14 Bits Minimum Resolution for Which No Missing Codes Are Guaranteed 14 14 14 Bits Integral Nonlinearity @ +25 °C ±1/2 ±1/2 LSB typ Integral Nonlinearity ±1 ±1 LSB max Bipolar Zero Error ±12 ±12 ±12 LSB max Positive Gain Error 4 ±12 ±12 ±12 LSB max Negative Gain Error 4 ±12 ±12 ±12 LSB max ANALOG INPUT Input Voltage Range ±3 ±3 ±3 Volts Input Current ±500 ±500 ±500 µA max REFERENCE OUTPUT REF OUT @ +25 °C 2.99/3.01 2.99/3.01 2.99/3.01 V min/V max TMIN to TMAX 2.98/3.02 2.98/3.02 2.98/3.02 V min/V max REF OUT Tempco ±40 ±40 ppm/ °C max Typically 35 ppm Reference Load Sensitivity ( ∆REF OUT/∆I) ±1.2 ±1.2 ±1.2 mV max Reference Load Current Change (0 µA–300 µA); Reference Load Should Not Be Changed During Conversion 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 Current (14/ 8/CLK Input Only) ±10 ±10 ±10 µA max VIN = VSS to VDD Input Capacitance, CIN 5 10 10 10 pF max LOGIC OUTPUTS Output High Voltage, VOH 4.0 4.0 4.0 V min ISOURCE = 40 µA Output Low Voltage, VOL 0.4 0.4 0.4 V max ISINK = 1.6 mA DB13 – DB0 Floating-State Leakage Current 10 10 10 µA max Floating-State Output Capacitance 5 15 15 15 pF max CONVERSION TIME External Clock 10 10 10 µs max Internal Clock 10.5 10.5 11 µs max The Internal Clock Has a Nominal Value of 2 MHz POWER REQUIREMENTS VDD +5 +5 +5 V nom ±5% for Specified Performance VSS –5 –5 –5 V nom ±5% for Specified Performance IDD 13 13 13 mA max Typically 6 mA ISS 6 6 6 mA max Typically 4 mA Power Dissipation 95 95 95 mW max Typically 50 mW NOTES 1Temperature ranges are as follows: J, K versions, 0 °C to +70°C; A, B versions, –40°C to +85°C; T version; –55°C to +125°C. 2V IN = ± 3 V. 3SNR calculation includes distortion and noise components. 4Measured with respect to internal reference. 5Sample tested @ +25 °C to ensure compliance. Specifications subject to change without notice. |
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