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ADS1203IPWT Datasheet(PDF) 4 Page - Texas Instruments |
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ADS1203IPWT Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 33 page  ADS1203 SBAS318C − JUNE 2004 − REVISED JANUARY 2008 www.ti.com 4 ELECTRICAL CHARACTERISTICS (continued) Over recommended operating free-air temperature range at −40 °C to +125°C, AVDD = BVDD = +5V or VDD = +5V, VIN+ = −250mV to +250mV, VIN− = 0V, Mode 3, MCLK input = 20MHz, and 16-bit Sinc3 filter, with OSR = 256, unless otherwise noted. PARAMETER UNITS ADS1203I TEST CONDITIONS PARAMETER UNITS MAX TYP(1) MIN TEST CONDITIONS AC Accuracy SINAD Signal-to-noise + distortion VIN = ±250mVPP at 5kHz 81 85 dB SINAD Signal-to-noise + distortion VIN = ±250mVPP at 5kHz, TA = −40°C to +85°C 82.5 dB SNR Signal-to-noise ratio VIN = ±250mVPP at 5kHz 81.5 85 dB SNR Signal-to-noise ratio VIN = ±250mVPP at 5kHz, TA = −40°C to +85°C 83 dB THD Total harmonic distortion VIN = ±250mVPP at 5kHz −95 −87 dB THD Total harmonic distortion VIN = ±250mVPP at 5kHz, TA = −40°C to +85°C −88 dB SFDR Spurious-free dynamic range VIN = ±250mVPP at 5kHz 88 95 dB SFDR Spurious-free dynamic range VIN = ±250mVPP at 5kHz, TA = −40°C to +85°C 90 dB Voltage Reference Output(6) VOUT Reference voltage output 2.440 2.5 2.560 V dVOUT/dT Reference voltage temperature ±30 ppm/ °C dVOUT/dT Reference voltage temperature drift TA = −40°C to +85°C ±20 ppm/ °C Output voltage noise f = 0.1Hz to 10Hz, CL = 10 µF 10 µVrms Output voltage noise f =10Hz to 10kHz, CL = 10 µF 12 µVrms PSRR Power-supply rejection ratio 60 dB IOUT Output current 10 µA ISC Short-circuit current 0.5 mA Turn-on settling time To 0.1% at CL = 0 100 µs Voltage Reference Input(6) VIN Reference voltage input 0.5 2.5 2.6 V Reference input resistance 20 k Ω Reference input capacitance 5 pF Reference input current 1 µA Digital Inputs(7) Logic family CMOS with Schmitt Trigger VIH High-level input voltage 0.7 ×BVDD BVDD+0.3 V VIL Low-level input voltage −0.3 0.3 ×BVDD V IIN Input current VIN = BVDD or GND ±50 nA CI Input capacitance 5 pF Digital Outputs(7) Logic family CMOS VOH High-level output voltage BVDD = 4.5V, IOH = −100 µA 4.44 V VOL Low-level output voltage BVDD = 4.5V, IOL = +100 µA 0.5 V CL Load capacitance 30 pF Data format Bit Stream (1) All typical values are at T A = +25 °C. (2) Integral nonlinearity is defined as the maximum deviation of the line through the end points of the specified input range 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. (5) With reduced accuracy, the supported external clock frequency range is 1MHz up to 32MHz. (6) Available only for QFN package. (7) Applicable for 5.0V nominal supply: BV DD = 4.5V to 5.5V. (8) Applicable for 3.0V nominal supply: BV DD = 2.7V to 3.6V. (9) Measured with CLKOUT pin not loaded. |
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