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AD7657BSTZ Datasheet(PDF) 5 Page - Analog Devices |
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AD7657BSTZ Datasheet(HTML) 5 Page - Analog Devices |
5 / 32 page Data Sheet AD7656/AD7657/AD7658 Rev. D | Page 5 of 32 AD7657 VREF = 2.5 V internal/external, AVCC = 4.75 V to 5.25 V, DVCC = 4.75 V to 5.25 V, VDRIVE = 2.7 V to 5.25 V; For ±4 × VREF range: VDD = 10 V to 16.5 V, VSS = −10 V to −16.5 V; For ±2 × VREF range: VDD = 5 V to 16.5 V, VSS = −5 V to −16.5 V; fSAMPLE = 250 kSPS, TA = TMIN to TMAX, unless otherwise noted.1 Table 2. Parameter B Version1 Y Version1 Unit Test Conditions/Comments DYNAMIC PERFORMANCE fIN = 50 kHz sine wave Signal-to-Noise + Distortion (SINAD)2 81.5 81.5 dB min Signal-to-Noise Ratio (SNR)2 82.5 82.5 dB min 83.5 83.5 dB typ Total Harmonic Distortion (THD)2 −90 −89 dB max −92 −92 dB typ Peak Harmonic or Spurious Noise (SFDR)2 −100 −100 dB typ Intermodulation Distortion (IMD)2 fa = 50 kHz, fb = 49 kHz Second-Order Terms −109 −109 dB typ Third-Order Terms −104 −104 dB typ Aperture Delay 10 10 ns max Aperture Delay Matching 4 4 ns max Aperture Jitter 35 35 ps typ Channel-to-Channel Isolation2 −100 −100 dB typ fIN on unselected channels up to 100 kHz Full Power Bandwidth 12 12 MHz typ @ −3 dB 2 2 MHz typ @ −0.1 dB DC ACCURACY Resolution 14 14 Bits No Missing Codes 14 14 Bits min Integral Nonlinearity2 ±1.5 ±1.5 LSB max ±1 ±1 LSB typ Positive Full-Scale Error2 ±0.75 ±0.75 % FSR max ±0.183% FSR typical Positive Full-Scale Error Matching2 ±0.3 ±0.3 % FSR max Bipolar Zero-Scale Error2 ±0.0305 ±0.0305 % FSR max ±0.015 % FSR typical Bipolar Zero-Scale Error Matching2 ±0.0427 ±0.0427 % FSR max Negative Full-Scale Error2 ±0.75 ±0.75 % FSR max ±0.183% FSR typical Negative Full-Scale Error Matching2 ±0.3 ±0.3 % FSR max ANALOG INPUT See Table 8 for min VDD/VSS for each range Input Voltage Ranges ±4 × VREF ±4 × VREF V RNG bit/RANGE pin = 0 ±2 × VREF ±2 × VREF V RNG bit/RANGE pin = 1 DC Leakage Current ±1 ±1 µA max Input Capacitance3 10 10 pF typ ±4 × VREF range when in track 14 14 pF typ ±2 × VREF range when in track REFERENCE INPUT/OUTPUT Reference Input Voltage Range 2.5/3 2.5/3 V min/max DC Leakage Current ±1 ±1 µA max Input Capacitance3 18.5 18.5 pF typ REFEN/DIS = 1 Reference Output Voltage 2.49/2.51 2.49/2.51 V min/max Long-Term Stability 150 150 ppm typ 1,000 hours Reference Temperature Coefficient 25 25 ppm/°C max 6 6 ppm/°C typ LOGIC INPUTS Input High Voltage (VINH) 0.7 × VDRIVE 0.7 × VDRIVE V min Input Low Voltage (VINL) 0.3 × VDRIVE 0.3 × VDRIVE V max Input Current (IIN) ±1 ±1 µA max Typically 10 nA, VIN = 0 V or VDRIVE Input Capacitance (CIN)3 10 10 pF max |
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