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ADS1202 Datasheet(PDF) 3 Page - Texas Instruments |
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ADS1202 Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 25 page  ADS1202 3 SBAS275B www.ti.com ELECTRICAL CHARACTERISTICS Over recommended operating free-air temperature range at –40 °C to +85°C, V DD = 5V, +In = –250mV to 250mV, –In = 0V, and MCLK = 10MHz, unless otherwise noted. ADS1202IPW PARAMETER CONDITIONS MIN TYP(1) MAX UNITS RESOLUTION 16 Bits DC ACCURACY Integral Nonlinearity(2) INL ±3 ±12 LSB 0.005 0.018 % Differential Linearity(3) DNL ±1 LSB Input Offset(4) VOS ±300 ±1000 µV Input Offset Drift TCVOS 28 µV/°C Gain Error(4) GERR ±0.25 ±2% Gain Error Drift TCGERR 20 ppm/ °C Power-Supply Rejection Ratio PSRR 4.75V < VDD < 5.25V 80 dB ANALOG INPUT Full-Scale Range FSR +In – (–In) ±320 mV Operating Common-Mode Signal(3) –0.1 5 V Input Capacitance Common-Mode 3 pF Input Leakage Current ±1nA Differential Input Resistance Equivalent 28 k Ω Differential Input Capacitance 5pF Common-Mode Rejection Ratio CMRR At DC 90 dB VIN = ±1.25Vp-p at 50kHz 85 dB INTERNAL VOLTAGE REFERENCE Reference Voltage VOUT Scale to 320mV 2.450 2.5 2.550 V Accuracy(4) Scale to 320mV ±2% Reference Temperature Drift dVOUT/dT ±20 ppm/ °C PSRR 80 dB Startup Time 0.1 ms INTERNAL CLOCK FOR MODES, 0, 1, AND 2 Clock Frequency 8 10 12 MHz EXTERNAL CLOCK FOR MODE 3 Clock Frequency 16 20 24 MHz AC ACCURACY Signal-to-Noise Ratio + Distortion SINAD VIN = ±250mVp-p at 5kHz 70 dB Signal-to-Noise Ratio SNR VIN = ±250mVp-p at 5kHz 67 70.5 dB Total Harmonic Distortion THD VIN = ±250mVp-p at 5kHz –84 dB Spurious Free Dynamic Range SFDR VIN = ±250mVp-p at 5kHz 84 dB DIGITAL INPUT Logic Family TTL with Schmitt Trigger High-Level Input Voltage VIH 2.6 VDD + 0.3 V Low-Level Input Voltage VIL –0.3 0.8 V High-Level Input Current IIH VI = VDD 0.005 2.5 µA Low-Level Input Current IIL VI = GND –2.5 0.005 µA Input Capacitance CJ 5pF DIGITAL OUTPUT High-Level Digital Output VOH VDD = 4.5V, IO = –5mA 4.6 V VDD = 4.5V, IO = –15mA 3.9 V Low-Level Digital Output VOL VDD = 4.5V, IO = 5mA 0.4 V VDD = 4.5V, IO = 15mA 1.1 V Output Capacitance CO 5pF Load Capacitance CL 30 pF POWER SUPPLY Supply Voltage VDD 4.5 5 5.5 V Operating Supply Current ICC Mode 0 8 9.5 mA Mode 3 6 7.5 mA Power Dissipation VDD = 5V, Mode 0 40 47.5 mW VDD = 5V, Mode 3 30 37.5 mW OPERATING TEMPERATURE –40 +85 °C NOTES: (1) All typical values are at TA = +25°C. (2) Integral nonlinearity is defined as the maximum deviation of the line through the end points of the transfer curve for VIN+ = –250mV to +250mV, expressed either as the number of LSBs or as a percent of measured input range (500mV). (3) Ensured by design. (4) Maximum values, including temperature drift, are ensured over the full specified temperature range. |
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