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MSC1200 Datasheet(PDF) 3 Page - Texas Instruments |
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MSC1200 Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 92 page  MSC1200 MSC1201 MSC1202 SBAS317E − APRIL 2004 − REVISED MAY 2006 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, ADC Bipolar Mode, and VREF ≡ (REF IN+) − (REF IN−) = +2.5V, unless otherwise noted. MSC120x PARAMETER CONDITION MIN TYP MAX UNITS Analog Input (AIN0-AIN5, 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−), Bipolar Mode ±VREF/PGA V Differential Input Impedance Buffer OFF 7/PGA(1) 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 7 pF Input Leakage Current Multiplexer Channel OFF, T = +25 °C 0.5 pA Burnout Current Sources Buffer ON ±2 µA ADC Offset DAC Offset DAC Range ±VREF/(2•PGA) V Offset DAC Resolution 8 Bits Offset DAC Full-Scale Gain Error ±1.0 % of Range Offset DAC Full-Scale Gain Error Drift 0.6 ppm/ °C System Performance Resolution MSC1200, MSC1201 24 Bits Resolution MSC1202 16 Bits ENOB MSC1200, MSC1201 22 Bits ENOB MSC1202 16 Bits Output Noise See Typical Characteristics No Missing Codes MSC1201, Sinc3 Filter, Decimation > 360 24 Bits No Missing Codes MSC1202, Sinc3 Filter 16 Bits Integral Nonlinearity End Point Fit, Differential Input ±0.0004 ±0.0015 % of FSR Offset Error After Calibration 1.5 ppm of FS Offset Drift(2) Before Calibration 0.1 ppm of FS/ °C Gain Error(3) After Calibration 0.005 % Gain Error Drift(2) Before Calibration 0.5 ppm/ °C System Gain Calibration Range 80 120 % of FS System Offset Calibration Range −50 50 % of FS At DC, VIN = 0V 120 dB Common-Mode Rejection fCM = 60Hz, fDATA = 10Hz 130 dB Common-Mode Rejection fCM = 50Hz, fDATA = 50Hz 120 dB fCM = 60Hz, fDATA = 60Hz 120 dB Normal-Mode Rejection fCM = 50Hz, fDATA = 50Hz 100 dB Normal-Mode Rejection fCM = 60Hz, fDATA = 60Hz 100 dB Power-Supply Rejection At DC, dB = −20log( ∆VOUT/∆VDD)(4), VIN = 0V 100 dB (1) The input impedance for PGA = 128 is the same as that for PGA = 64 (that is, 7MΩ/64). (2) Calibration can minimize these errors. (3) The gain self-calibration cannot have a REF IN+ of more than AVDD −1.5V with Buffer ON. To calibrate gain, turn Buffer OFF. (4) ∆VOUT is change in digital result. |
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