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AD7870LN 数据表(PDF) 3 Page - Analog Devices |
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AD7870LN 数据表(HTML) 3 Page - Analog Devices |
3 / 20 page AD7875/AD7876 Parameter K, B 1 L, C 1 T 1 Units Test Conditions/Comments DC ACCURACY Resolution 12 12 12 Bits Minimum Resolution for Which No Missing Codes Are Guaranteed 12 12 12 Bits Integral Nonlinearity @ +25 °C ±1 ±1/2 ±1 LSB max TMIN to TMAX (AD7875 Only) ±1 ±1 ±1 LSB max TMIN to TMAX (AD7876 Only) ±1 ±1/2 ±1 LSB max Differential Nonlinearity ±1 ±1 ±1.5/–1.0 LSB max Unipolar Offset Error (AD7875 Only) ±5 ±5 ±5 LSB max Bipolar Zero Error (AD7876 Only) ±6 ±2 ±6 LSB max Full-Scale Error at +25 °C2 ±8 ±8 ±8 LSB max Typical Full-Scale Error Is ±1 LSB Full-Scale TC 2 ±60 ±35 ±60 ppm/ °C max Typical TC is ±20 ppm/°C Track/Hold Acquisition Time 2 2 2 µs max DYNAMIC PERFORMANCE 3 (AD7875 ONLY) Signal-to-Noise Ratio 4 (SNR) @ +25 °C 70 72 69 dB min VIN = 10 kHz Sine Wave, fSAMPLE = 100 kHz TMIN to TMAX 70 71 69 dB min Typically 71.5 dB for 0 < VIN < 50 kHz Total Harmonic Distortion (THD) –80 –80 –78 dB max VIN = 10 kHz Sine Wave, fSAMPLE = 100 kHz Typically –86 dB for 0 < VIN < 50 kHz Peak Harmonic or Spurious Noise –80 –80 –78 dB max VIN = 10 kHz, fSAMPLE = 100 kHz Typically –86 dB for 0 < VIN < 50 kHz Intermodulation Distortion (IMD) Second Order Terms –80 –80 –78 dB max fa = 9 kHz, fb = 9.5 kHz, fSAMPLE = 50 kHz Third Order Terms –80 –80 –78 dB max fa = 9 kHz, fb = 9.5 kHz, fSAMPLE = 50 kHz ANALOG INPUT AD7875 Input Voltage Range 0 to +5 0 to +5 0 to +5 Volts AD7875 Input Current 500 500 500 µA max AD7876 Input Voltage Range ±10 ±10 ±10 Volts AD7876 Input Current ±600 ±600 ±600 µA max REFERENCE OUTPUT REF OUT @ +25 °C 2.99 2.99 2.99 V min 3.01 3.01 3.01 V max REF OUT Tempco ±60 ±35 ±60 ppm/ °C max Typical Tempco Is ±20 ppm/°C Reference Load Sensitivity ( ∆REF OUT/∆I) –1 –1 –1 mV max Reference Load Current Change (0 µA–500 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 (12/ 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 DB11–DB0 Floating-State Leakage Current 10 10 10 µA max Floating-State Output Capacitance5 15 15 15 pF max CONVERSION TIME External Clock (fCLK = 2.5 MHz) 8 8 8 µs max Internal Clock 7/9 7/9 7/9 µs min/µs max POWER REQUIREMENTS As per AD7870 NOTES 1Temperature ranges are as follows: AD7875: K, L Versions, 0 °C to +70°C; B, C Versions, –40°C to +85°C; T Version, –55°C to +125°C. AD7876: B, C Versions, –40 °C to +85°C; T Version, –55°C to +125°C. 2Includes internal reference error and is calculated after unipolar offset error (AD7875) or bipolar zero error (AD7876) has been adjusted out. Full-scale error refers to both positive and negative full-scale error for the AD7876. 3Dynamic performance parameters are not tested on the AD7876 but these are typically the same as for the AD7875. 4SNR calculation includes distortion and noise components. 5Sample tested @ +25 °C to ensure compliance. Specifications subject to change without notice. REV. B AD7870/AD7875/AD7876 –3– |
类似零件编号 - AD7870LN |
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类似说明 - AD7870LN |
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