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AD7703CR 데이터시트(PDF) 2 Page - Analog Devices |
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AD7703CR 데이터시트(HTML) 2 Page - Analog Devices |
2 / 16 page REV. D –2– AD7703–SPECIFICATIONS Parameter A/S Versions 2 B Version 2 C Version 2 Units Test Conditions/Comments STATIC PERFORMANCE Resolution 20 20 20 Bits Integral Nonlinearity, TMIN to TMAX ± 0.0015 ± 0.0007 ± 0.0003 % FSR typ +25 °C ± 0.003 ± 0.0015 ± 0.0008 % FSR max TMIN to TMAX ± 0.003 ± 0.0015 ± 0.0012 % FSR max Differential Nonlinearity, TMIN to TMAX ± 0.5 ± 0.5 ± 0.5 LSB typ Guaranteed No Missing Codes Positive Full-Scale Error 3 ± 4 ± 4 ± 4 LSB typ ± 16 ± 16 ± 16 LSB max Full-Scale Drift 4 ± 19/± 37 ± 19 ± 19 LSB typ Unipolar Offset Error 3 ± 4 ± 4 ± 4 LSB typ ± 16 ± 16 ± 16 LSB max Unipolar Offset Drift 4 ± 26 ± 26 ± 26 LSB typ Temp Range: 0 °C to +70°C ± 67 +48/–400 ± 67 ± 67 LSB typ Specified Temp Range Bipolar Zero Error 3 ± 4 ± 4 ± 4 LSB typ ± 16 ± 16 ± 16 LSB max Bipolar Zero Drift 4 ± 13 ± 13 ± 13 LSB typ Temp Range: 0 °C to +70°C ± 34 +24/–200 ± 34 ± 34 LSB typ Specified Temp Range Bipolar Negative Full-Scale Errors 3 ± 8 ± 8 ± 8 LSB typ ± 32 ± 32 ± 32 LSB max Bipolar Negative Full-Scale Drift 4 ± 10/± 20 ± 10 ± 10 LSB typ Noise (Referred to Output) 1.6 1.6 1.6 LSB rms typ DYNAMIC PERFORMANCE Sampling Frequency, fS fCLKIN/256 fCLKIN/256 fCLKIN/256 Hz Output Update Rate, fOUT fCLKIN/1024 fCLKIN/1024 fCLKIN/1024 Hz Filter Corner Frequency, f–3 dB fCLKIN/409,600 fCLKIN/409,600 fCLKIN/409,600 Hz Settling Time to ±0.0007% FS 507904/fCLKIN 507904/fCLKIN 507904/fCLKIN sec For Full-Scale Input Step SYSTEM CALIBRATION Positive Full-Scale Calibration Range VREF + 0.1 VREF + 0.1 VREF + 0.1 V max System Calibration Applies to Positive Full-Scale Overrange VREF + 0.1 VREF + 0.1 VREF + 0.1 V max Unipolar and Bipolar Ranges. Negative Full-Scale Overrange –(VREF + 0.1) –(VREF + 0.1) –(VREF + 0.1) V max After Calibration, if AIN > VREF, Maximum Offset Calibration Ranges 5, 6 the Device Will Output All 1s. Unipolar Input Range –(VREF + 0.1) –(VREF + 0.1) –(VREF + 0.1) V max If AIN < 0 (Unipolar) or –VREF Bipolar Input Range –0.4 VREF to +0.4 VREF –0.4 VREF to +0.4 VREF –0.4 VREF to +0.4 VREF V max (Bipolar), the Device Will Input Span 7 0.8 VREF 0.8 VREF 0.8 VREF V min Output all 0s 2 VREF + 0.2 2 VREF + 0.2 2 VREF + 0.2 V max ANALOG INPUT Unipolar Input Range 0 to +2.5 0 to +2.5 0 to +2.5 Volts Bipolar Input Range ± 2.5 ± 2.5 ± 2.5 Volts Input Capacitance 20 20 20 pF typ Input Bias Current 1 1 1 1 nA typ LOGIC INPUTS All Inputs except CLKIN VINL, Input Low Voltage 0.8 0.8 0.8 V max VINH, Input High Voltage 2.0 2.0 2.0 V min CLKIN VINL, Input Low Voltage 0.8 0.8 0.8 V max VINH, Input High Voltage 3.5 3.5 3.5 V min IIN, Input Current 10 10 10 µA max LOGIC OUTPUTS VOL, Output Low Voltage 0.4 0.4 0.4 V max ISINK = 1.6 mA VOH, Output High Voltage DVDD –1 DVDD –1 DVDD –1 V min ISOURCE = 100 µA Floating State Leakage Current ± 10 ± 10 ± 10 µA max Floating State Output Capacitance 9 9 9 pF typ POWER REQUIREMENTS Power Supply Voltages Analog Positive Supply (AVDD) 4.5/5.5 4.5/5.5 4.5/5.5 V min/V max For Specified Performance Digital Positive Supply (DVDD) 4.5/AVDD 4.5/AVDD 4.5/AVDD V min/V max Analog Negative Supply (AVSS) –4.5/–5.5 –4.5/–5.5 –4.5/–5.5 V min/V max Digital Negative Supply (DVSS) –4.5/–5.5 –4.5/–5.5 –4.5/–5.5 V min/V max Calibration Memory Retention Power Supply Voltage 2.0 2.0 2.0 V min (TA = +25 C; AVDD = DVDD = +5 V; AVSS = DVSS = –5 V; VREF = +2.5 V; fCLKIN = 4.096 MHz; BP/UP = +5 V; MODE = +5 V; AIN Source Resistance = 1 k 1 with 1 nF to AGND at A IN unless otherwise noted.) |
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