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MSC1200 Datasheet(PDF) 4 Page - Texas Instruments |
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MSC1200 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 60 page MSC1200 4 SBAS289E www.ti.com ELECTRICAL CHARACTERISTICS: AVDD = 3V All specifications from TMIN to TMAX, AVDD = +3V, DVDD = +2.7V to 5.25V, fMOD = 15.625kHz, PGA = 1, Buffer ON, fDATA = 10Hz, Bipolar, and VREF ≡ (REF IN+) – (REF IN–) = +1.25V, unless otherwise noted. MSC1200Yx PARAMETER CONDITION MIN TYP MAX UNITS ANALOG INPUT (AIN0-AIN7, AINCOM) Analog Input Range Buffer OFF AGND – 0.1 AVDD + 0.1 V Buffer ON AGND + 50mV AVDD – 1.5 V Full-Scale Input Voltage Range (In+) – (In–) ±V REF/PGA V Differential Input Impedance Buffer OFF 7/PGA M Ω Input Current Buffer ON 0.5 nA Bandwidth Fast Settling Filter –3dB 0.469 • fDATA Sinc2 Filter –3dB 0.318 • fDATA Sinc3 Filter –3dB 0.262 • fDATA Programmable Gain Amplifier User-Selectable Gain Ranges 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 ±V REF/(2 • PGA) V Offset DAC Monotonicity 8 Bits Offset DAC Gain Error ±1.5 % of Range Offset DAC Gain Error Drift 0.6 ppm/ °C SYSTEM PERFORMANCE Resolution 24 Bits ENOB 22 Bits Output Noise See Typical Characteristics No Missing Codes Sinc3 Filter 24 Bits Integral Nonlinearity End Point Fit, Differential Input ±0.0004 ±0.0015 %FSR Offset Error After Calibration 1.3 ppm of FS Offset Drift(1) Before Calibration 0.02 ppm of FS/ °C Gain Error(2) After Calibration 0.005 % 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 Common-Mode Rejection At DC 100 130 dB fCM = 60Hz, fDATA = 10Hz 130 dB fCM = 50Hz, fDATA = 50Hz 120 dB fCM = 60Hz, fDATA = 60Hz 120 dB Normal Mode Rejection fSIG = 50Hz, fDATA = 50Hz 100 dB fSIG = 60Hz, fDATA = 60Hz 100 dB Power-Supply Rejection At DC, dB = –20log(DVOUT/DVDD)(3) 88 dB VOLTAGE REFERENCE INPUTS Reference Input Range REF IN+, REF IN– AGND AVDD(2) V VREF VREF ≡ (REF IN+) – (REF IN–) 0.3 1.25 AVDD V Common-Mode Rejection At DC 110 dB Input Current VREF = 1.25V, PGA = 1 0.5 µA ON-CHIP VOLTAGE REFERENCE Output Voltage VREFH = 0 at +25 °C 1.25 V Short-Circuit Current Source 4mA Short-Circuit Current Sink 5 µA Short-Circuit Duration Sink or Source Indefinite Startup Time from Power ON 0.2 ms Temperature Sensor Temperature Sensor Voltage T = +25 °C 115 mV Temperature Sensor Coefficient 375 µV/°C IDAC OUTPUT CHARACTERISTICS Full-Scale Output Current 1mA Maximum Short-Circuit Current Duration Indefinite Compliance Voltage AVDD – 1.5 V POWER-SUPPLY REQUIREMENTS Power-Supply Voltage AVDD 2.7 3.0 3.6 V Analog Current Analog OFF, ALVD OFF, PDADC = PDIDAC = 1 < 1 nA ADC Current IADC PGA = 1, Buffer OFF 150 µA PGA = 128, Buffer OFF 380 µA PGA = 1, Buffer ON 200 µA PGA = 128, Buffer ON 610 µA VREF Supply Current IVREF ADC ON 330 µA IDAC Supply Current IIDAC IDAC = 00H 220 µA NOTES: (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) DVOUT is change in digital result. |
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