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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AD7701ARS датащи(PDF) 3 Page - Analog Devices |
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AD7701ARS датащи(HTML) 3 Page - Analog Devices |
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3 / 21 page  REV. E –2– AD7701–SPECIFICATIONS Parameter A, S Version 2 B, T Version 2 Unit Test Conditions/Comments STATIC PERFORMANCE Resolution 16 16 Bits Integral Nonlinearity TMIN to TMAX ±0.0007 % FSR typ ±0.003 ±0.0015 % FSR max Differential Nonlinearity TMIN to TMAX ±0.125 ±0.125 LSB typ Guaranteed No Missing Codes ±0.5 ±0.5 LSB max Positive Full-Scale Error3 ±0.13 ±0.13 LSB typ ±0.5 ±0.5 LSB max Full-Scale Drift4 ±1.2 (±2.3 S Version) ±1.2 (±2.3 T Version) LSB typ Unipolar Offset Error 3 ±0.25 ±0.25 LSB typ ±1 ±1 LSB max Unipolar Offset Drift 4 ±1.6 (+3/–25 S Version) ±1.6 (+3/–25 T Version) LSB typ Bipolar Zero Error3 ±0.25 ±0.25 LSB typ ±1 ± 1 LSB max Bipolar Zero Drift4 ±0.8 (+1.5/–12.5 S Version) ±0.8 (+1.5/–12.5 T Version) LSB typ Bipolar Negative Full-Scale Error 3 ±0.5 ±0.5 LSB typ ±2 ±2 LSB max Bipolar Negative Full-Scale Drift 4 ±0.6 (±1.2 S Version) ±0.6 (±1.2 T Version) LSB typ Noise (Referred to Output) 0.1 0.1 LSB rms typ DYNAMIC PERFORMANCE Sampling Frequency, fS fCLKIN/256 fCLKIN/256 Hz Output Update Rate, fOUT fCLKIN/1024 fCLKIN/1024 Hz Filter Corner Frequency, f–3 dB fCLKIN/409,600 fCLKIN/409,600 Hz Settling Time to ±0.0007% FS 507904/fCLKIN 507904/fCLKIN sec For Full-Scale Input Step SYSTEM CALIBRATION Applies to unipolar and Positive Full-Scale Overrange VREF + 0.1 VREF + 0.1 V max bipolar ranges. After cali- Positive Full-Scale Overrange VREF + 0.1 VREF + 0.1 V max bration, if AIN > VREF, the Negative Full-Scale Overrange –(VREF + 0.1) –(VREF + 0.1) V max device will output all 1s. Maximum Offset Calibration Range 5, 6 If AIN < 0 (unipolar) or Unipolar Input Range –(VREF + 0.1) –(VREF + 0.1) V max –VREF (bipolar), the device Bipolar Input Range –0.4 VREF to +0.4 VREF –0.4 VREF to +0.4 VREF V max will output all 0s. Input Span7 0.8 VREF 0.8 VREF V min 2 VREF + 0.2 2 VREF + 0.2 V max ANALOG INPUT Unipolar Input Range 0 to 2.5 0 to 2.5 V Bipolar Input Range ±2.5 ±2.5 V Input Capacitance 10 10 pF typ Input Bias Current 1 11 nA typ LOGIC INPUTS All Inputs Except CLKIN VINL, Input Low Voltage 0.8 0.8 V max VINH, Input High Voltage 2.0 2.0 V min CLKIN VINL, Input Low Voltage 0.8 0.8 V max VINH, Input High Voltage 3.5 3.5 V min IIN, Input Current 10 10 µA max LOGIC OUTPUTS VOL, Output Low Voltage 0.4 0.4 V max ISINK = 1.6 mA VOH, Output High Voltage DVDD – 1 DVDD – 1 V min ISOURCE = 100 µA Floating State Leakage Current ±10 ±10 µA max Floating State Output Capacitance 9 9 pF typ (TA = 25 C; AVDD = DVDD = +5 V; AVSS = DVSS = –5 V; VREF = +2.5 V; fCLKIN = 4.096 MHz; Bipolar Mode: MODE = +5 V; AIN Source Resistance = 1k 1 with 1 nF to AGND at A IN; unless otherwise noted.) |
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