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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MSC1210 датащи(PDF) 3 Page - Texas Instruments |
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MSC1210 датащи(HTML) 3 Page - Texas Instruments |
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3 / 83 page  MSC1210 SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004 www.ti.com 3 ELECTRICAL CHARACTERISTICS: AVDD = 5V All specifications from TMIN to TMAX, DVDD = +2.7V to 5.25V, fMOD = 15.625kHz, PGA = 1, Buffer ON, fDATA = 10Hz, Bipolar, and VREF = (REF IN+) − (REF IN−) = +2.5V, unless otherwise noted. MSC1210Yx PARAMETER CONDITIONS MIN TYP MAX UNITS Analog Input (AIN0-AIN7, AINCOM) Analog Input Range Buffer OFF AGND − 0.1 AVDD + 0.1 V Analog Input Range Buffer ON AGND + 50mV AVDD − 1.5 V Full-Scale Input Voltage Range (In+) − (In−) ±VREF/PGA V Differential Input Impedance Buffer OFF 7/PGA(5) M Ω Input Current Buffer ON 0.5 nA Fast Settling Filter −3dB 0.469 • fDATA Bandwidth Sinc2 Filter −3dB 0.318 • fDATA Bandwidth Sinc3 Filter −3dB 0.262 • fDATA Programmable Gain Amplifier User-Selectable Gain Range 1 128 Input Capacitance Buffer On 9 pF Input Leakage Current Modulator OFF, T = +25 °C 0.5 pA Burnout Current Sources Buffer On ±2 µA Offset DAC Offset DAC Range ±VREF/(2•PGA) V Offset DAC Monotonicity 8 Bits Offset DAC Gain Error ±1.5 % of Range Offset DAC Gain Error Drift 1 ppm/ °C System Performance Resolution 24 Bits ENOB See Typical Characteristics 22 Bits Output Noise See Typical Characteristics No Missing Codes Sinc3 Filter, Decimation > 360 24 Bits Integral Nonlinearity End Point Fit, Differential Input ±0.0015 % of FSR Offset Error After Calibration 7.5 ppm of FS Offset Drift(1) Before Calibration 0.02 ppm of FS/ °C Gain Error(2) After Calibration 0.002 % Gain Error Drift(1) Before Calibration 0.5 ppm/ °C System Gain Calibration Range 80 120 % of FS System Offset Calibration Range −50 50 % of FS At DC 100 115 dB ADC Common-Mode Rejection fCM = 60Hz, fDATA = 10Hz 130 dB ADC Common-Mode Rejection fCM = 50Hz, fDATA = 50Hz 120 dB fCM = 60Hz, fDATA = 60Hz 120 dB Normal-Mode Rejection fSIG = 50Hz, fDATA = 50Hz 100 dB Normal-Mode Rejection fSIG = 60Hz, fDATA = 60Hz 100 dB Power-Supply Rejection At DC, dB = −20log( ∆VOUT/∆VDD)(3) 80 88 dB (1) Calibration can minimize these errors. (2) The gain calibration cannot have a REF IN+ of more than AVDD −1.5V with Buffer ON. To calibrate gain, turn Buffer OFF. (3) ∆VOUT is change in digital result. (4) 9pF switched capacitor at fSAMP clock frequency (see Figure 13). (5) The input impedance for PGA = 128 is the same as that for PGA = 64 (that is, 7M Ω/64). |
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