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ADS8557IPM Arkusz danych(PDF) 5 Page - Texas Instruments |
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ADS8557IPM Arkusz danych(HTML) 5 Page - Texas Instruments |
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5 / 40 page  ELECTRICAL CHARACTERISTICS: ADS8557 ADS8556 ADS8557 ADS8558 www.ti.com ............................................................................................................................................... SBAS404A – OCTOBER 2006 – REVISED AUGUST 2009 Over recommended operating free-air temperature range of –40°C to +125°C, AVDD = 4.5V to 5.5V, BVDD = 2.7V to 5.5V, HVDD = 10V to 15V, HVSS = –15V to –10V, VREF = 2.5V (internal), and fDATA = 670kSPS in parallel mode or 470kSPS in serial mode, unless otherwise noted. ADS8557 PARAMETER CONDITIONS MIN TYP(1) MAX UNIT DC ACCURACY Resolution 14 Bits No missing codes 14 Bits Integral linearity error INL –1 ±0.4 1 LSB Differential linearity error DNL –1 ±0.25 1 LSB Offset error –4 ±0.8 4 mV Offset error drift ±3.5 µV/°C Gain error Referenced to voltage at REFIO –0.75 ±0.25 0.75 %FSR Gain error drift Referenced to voltage at REFIO ±6 ppm/°C Power-supply rejection ratio PSRR At output code FFFFh, related to AVDD 60 dB SAMPLING DYNAMICS Acquisition time tACQ 280 ns Conversion time per ADC tCONV 1.19 µs 18.5 tCCLK Internal conversion clock period tCCLK 64.1 ns Parallel interface, 670 kSPS internal clock and reference Throughput rate fDATA Serial interface, 470 kSPS internal clock and reference AC ACCURACY Signal-to-noise ratio SNR At fIN = 10kHz 84 85 dB Signal-to-noise ratio + distortion SINAD At fIN = 10kHz 83 84 dB Total harmonic distortion(2) THD At fIN = 10kHz –91 –86 dB Spurious-free dynamic range SFDR At fIN = 10kHz 86 92 dB Channel-to-channel isolation At fIN = 10kHz 100 dB In 4 × VREF mode 48 MHz –3dB small-signal bandwidth In 2 × VREF mode 24 MHz (1) All values are at TA = +25°C. (2) Calculated on the first nine harmonics of the input frequency. Copyright © 2006–2009, Texas Instruments Incorporated 5 Product Folder Link(s): ADS8556 ADS8557 ADS8558 |
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