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ADS1203IPWT Arkusz danych(PDF) 3 Page - Texas Instruments |
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ADS1203IPWT Arkusz danych(HTML) 3 Page - Texas Instruments |
3 / 34 page ADS1203 SBAS318C − JUNE 2004 − REVISED JANUARY 2008 www.ti.com 3 ELECTRICAL CHARACTERISTICS 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. ADS1203I PARAMETER TEST CONDITIONS MIN TYP(1) MAX UNITS Resolution 16 Bits DC Accuracy INL Integral linearity error(2) ±1 ±4 LSB INL Integral linearity error(2) TA = −40°C to +85°C ±3 LSB DNL Differential nonlinearity(3) ±1 LSB VOS Input offset(4) ±220 ±1000 µV TCVOS Input offset drift ±3.5 ±8 µV/°C GERR Gain error(4) REFIO = internal 2.5V ±0.2 ±1.4 % GERR Gain error(4) REFIO = internal 2.5V, TA = −40°C to +85°C −1 1 % TCGERR Gain error drift ±30 ppm/ °C TCGERR Gain error drift TA = −40°C to +85°C ±20 ppm/ °C PSRR Power-supply rejection ratio 4.5V < AVDD or VDD < 5.5V 80 dB Analog Input FSR Full-scale differential range (VIN+) − (VIN−) ±320 mV Operating common-mode signal(3) −0.1 5 V Input capacitance Common-mode 3 pF Input leakage current ±16 nA Input leakage current TA = −40°C to +85°C ±1 nA Differential input resistance Equivalent 28 k Ω Differential input capacitance 5 pF CMRR Common-mode rejection ratio At DC 92 dB CMRR Common-mode rejection ratio VIN = 0V to 5V at 50kHz 105 dB Internal Clock for Modes 0, 1, and 2 Clock frequency 8.7 10 11 MHz Clock frequency TA = −40°C to +85°C 9 11 MHz External Clock for Mode 3 Clock frequency(5) 16 20 24 MHz (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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