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ADS7863IRGE Arkusz danych(PDF) 4 Page - Burr-Brown (TI) |
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ADS7863IRGE Arkusz danych(HTML) 4 Page - Burr-Brown (TI) |
4 / 30 page www.ti.com ELECTRICAL CHARACTERISTICS ADS7863 SBAS383 – JUNE 2007 At TA = –40°C to +125°C, and AVDD = 5V, BVDD = 3.3V, VREF = 2.5V (internal), fCLK = 24MHz, and fSAMPLE = 1.5MSPS, unless otherwise noted. ADS7863 PARAMETER TEST CONDITIONS MIN TYP(1) MAX UNIT RESOLUTION 12 Bits ANALOG INPUT FSR Full-scale differential input range (CHxx+) – (CHxx–) –VREF +VREF V VIN Absolute input voltage CHxx+ or CHxx+ to AGND –0.1 AVDD + 0.1 V CIN Input capacitance CHxx+ or CHxx– to AGND 2 pF CID Differential input capacitance 4 pF IIL Input leakage current –1 +1 nA CMRR Common-mode rejection ratio 80 dB DC ACCURACY INL Integral nonlinearity –1 +1 LSB INL match LSB DNL Differential nonlinearity(2) –1 +1 LSB DNL match LSB VOS Input offset error –1 +1 LSB VOS match Asynchronous to Synchronous LSB dVOS/dT Input offset thermal drift μV/ °C GERR Gain error(2) 0.25 % GERR match % GERR/dT Gain error thermal drift ppm/ °C PSRR Power-supply rejection ratio 2.7V < AVDD < 5.5V 70 dB AC ACCURACY SINAD Signal-to-noise + distortion VIN = 5VPP at 100kHz 70 dB SNR Signal-to-noise ratio VIN = 5VPP at 100kHz dB THD Total harmonic distortion VIN = 5VPP at 100kHz –75 dB SFDR Spurious-free dynamic range VIN = 5VPP at 100kHz 75 dB SAMPLING DYNAMICS tCONV Conversion time per ADC 1MHz < fCLK ≤ 24MHz 0.542 13 μs tACQ Acquisition time 125 ns tDATA Throughput rate 1MHz < fCLK ≤ 24MHz 62.5 1500 kSPS tA Aperture delay 6 ns tA match 50 ps tAJIT Aperture jitter 50 ps fCLK Clock frequency on CLOCK 1 24 MHz INTERNAL VOLTAGE REFERENCE Resolution Reference output DAC resolution 10 Bits Over 20%...100% DAC range 0.496 2.520 V DAC = 0x3FF, VREFOUT Reference output voltage 2.480 2.500 2.520 V –40 °C < T A < +125°C DAC = 0x3FF at +25 °C 2.485 2.500 2.515 V dVREFOUT/dT Reference voltage drift ±10 ppm/ °C –9.76 9.76 mV DNLDAC DAC differential nonlinearity –4 4 LSB –9.76 9.76 mV INLDAC DAC integral nonlinearity –4 4 LSB 9.76 mV VOSDAC DAC offset error VREFOUT = 0.5V 4 LSB (1) All typical values at TA = +25°C. (2) Ensured by design, not production tested. 4 Submit Documentation Feedback |
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