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AD7908 Folha de dados(PDF) 2 Page - Analog Devices |
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AD7908 Folha de dados(HTML) 2 Page - Analog Devices |
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2 / 24 page  AD7908/AD7918/AD7928 REV. A Parameter B Version 1 Unit Test Conditions/Comments DYNAMIC PERFORMANCE fIN = 50 kHz Sine Wave, fSCLK = 20 MHz Signal-to-(Noise + Distortion) (SINAD) 2 49 dB min Signal-to-Noise Ratio (SNR) 2 49 dB min Total Harmonic Distortion (THD) 2 –66 dB max Peak Harmonic or Spurious Noise (SFDR) 2 –64 dB max Intermodulation Distortion (IMD) 2 fa = 40.1 kHz, fb = 41.5 kHz Second Order Terms –90 dB typ Third Order Terms –90 dB typ Aperture Delay 10 ns typ Aperture Jitter 50 ps typ Channel-to-Channel Isolation 2 –85 dB typ fIN = 400 kHz Full Power Bandwidth 8.2 MHz typ @ 3 dB 1.6 MHz typ @ 0.1 dB DC ACCURACY 2 Resolution 8 Bits Integral Nonlinearity ±0.2 LSB max Differential Nonlinearity ±0.2 LSB max Guaranteed No Missed Codes to 8 Bits 0 V to REFIN Input Range Straight Binary Output Coding Offset Error ±0.5 LSB max Offset Error Match ±0.05 LSB max Gain Error ±0.2 LSB max Gain Error Match ±0.05 LSB max 0 V to 2 REFIN Input Range –REFIN to +REFIN Biased about REFIN with Positive Gain Error ±0.2 LSB max Twos Complement Output Coding Positive Gain Error Match ±0.05 LSB max Zero Code Error ±0.5 LSB max Zero Code Error Match ±0.1 LSB max Negative Gain Error ±0.2 LSB max Negative Gain Error Match ±0.05 LSB max ANALOG INPUT Input Voltage Ranges 0 to REFIN V RANGE Bit Set to 1 0 to 2 REFIN V RANGE Bit Set to 0, AVDD/VDRIVE = 4.75 V to 5.25 V DC Leakage Current ±1 µA max Input Capacitance 20 pF typ REFERENCE INPUT REFIN Input Voltage 2.5 V ±1% Specified Performance DC Leakage Current ±1 µA max REFIN Input Impedance 36 k typ fSAMPLE = 1 MSPS LOGIC INPUTS Input High Voltage, VINH 0.7 VDRIVE V min Input Low Voltage, VINL 0.3 VDRIVE V max Input Current, IIN ±1 µA max Typically 10 nA, VIN = 0 V or VDRIVE Input Capacitance, CIN 3 10 pF max LOGIC OUTPUTS Output High Voltage, VOH VDRIVE – 0.2 V min ISOURCE = 200 µA, AVDD = 2.7 V to 5.25 V Output Low Voltage, VOL 0.4 V max ISINK = 200 µA Floating-State Leakage Current ±1 µA max Floating-State Output Capacitance 3 10 pF max Output Coding Straight (Natural) Binary Coding Bit Set to 1 Twos Complement Coding Bit Set to 0 CONVERSION RATE Conversion Time 800 ns max 16 SCLK Cycles with SCLK at 20 MHz Track-and-Hold Acquisition Time 300 ns max Sine Wave Input 300 ns max Full-Scale Step Input Throughput Rate 1 MSPS max See Serial Interface Section (AVDD = VDRIVE = 2.7 V to 5.25 V, REFIN = 2.5 V, fSCLK = 20 MHz, TA = TMIN to TMAX, unless otherwise noted.) AD7908–SPECIFICATIONS –2– |
Nº de peça semelhante - AD7908 |
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Descrição semelhante - AD7908 |
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