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AD7450BR Datasheet(PDF) 2 Page - Analog Devices |
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AD7450BR Datasheet(HTML) 2 Page - Analog Devices |
2 / 24 page REV. PrJ PRELIMINARY TECHNICAL DATA –2– Parameter A Version 1 B Version 1 Units Test Conditions/Comments DYNAMIC PERFORMANCE FIN = 300kHz Sine Wave, fSAMPLE= 833kSPS, 1MSPS Signal to (Noise + Distortion) Ratio 70 70 dB min (SINAD) 2 Total Harmonic Distortion (THD) 2 -80 -80 dB max Peak Harmonic or Spurious Noise 2 -80 -80 dB max Intermodulation Distortion (IMD) 2 Second Order Terms -78 -78 dB typ Third Order Terms -78 -78 dB typ Aperture Delay 3 10 10 ns typ Aperture Jitter 3 50 50 ps typ Full Power Bandwidth 3 20 20 MHz typ @ -3 dB 2.5 2.5 MHz typ @ -0.1 dB Common Mode Rejection Ratio T B D T B D dB (CMRR) 2 DC ACCURACY Resolution 12 12 Bits Integral Nonlinearity (INL)2 ± 2 ± 1 LSB max Differential Nonlinearity (DNL) 2 ± 1 ± 1 LSB max Guaranteed No Missed Codes to 12 Bits. Zero Code Error 2 ± 5 ± 5 LSB max Positive Gain Error2 ± 5 ± 5 LSB max Negative Gain Error 2 ± 5 ± 5 LSB max ANALOG INPUT Full Scale Input Span VIN+ - VIN - Volts 2 x VREF 4 Absolute Input Voltage VIN+ VCM 3 ± V REF/2 Volts VCM = VREF VIN- VCM 3 ± V REF/2 Volts VCM = VREF DC Leakage Current ± 1 ± 1 µA max Input Capacitance 20 20 pF typ When in Track 5 5 pF typ When in Hold REFERENCE INPUT VREF Input Voltage 2.5 5 2.5 Volts 5 V supply (±1% tolerance for specified performance) 1.25 6 1.25 Volts 3 V supply (±1% tolerance for specified performance) DC Leakage Current ± 1 ± 1 µA max VREF Input Capacitance 15 15 pF typ LOGIC INPUTS Input High Voltage, VINH 2.4 2.4 V min Input Low Voltage, VINL 0.8 0.8 V max Input Current, IIN ± 1 ± 1 µA max Typically 10 nA, VIN = 0 V or VDD Input Capacitance, CIN 7 10 10 pF max LOGIC OUTPUTS Output High Voltage, VOH 2.8 2.8 V min ISOURCE = 200µA Output Low Voltage, VOL 0.4 0.4 V max ISINK =200µA Floating-State Leakage Current ±10 ±10 µA max Floating-State Output Capacitance 7 10 10 pF max Output Coding Two’s Complement CONVERSION RATE Conversion Time 16 16 SCLK cycles 888ns with an 18MHz SCLK 1.07µs with a 15MHz SCLK Track/Hold Acquisition Time 8 275 275 ns max Sine Wave input Throughput Rate 9 1 1 MSPS max @ VDD = 5V 833 833 kSPS max @ VDD = 3V AD7450 - SPECIFICATIONS1 ( VDD = 2.7V to 3.3V, fSCLK = 15MHz, fS = 833kHz, VREF = 1.25 V; VDD = 4.75V to 5.25V, fSCLK = 18MHz, fS = 1MHz, VREF = 2.5 V; VCM 3 = V REF; TA = TMIN to TMAX, unless otherwise noted.) |
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