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ADS8557IPMR Datasheet(PDF) 11 Page - Texas Instruments |
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ADS8557IPMR Datasheet(HTML) 11 Page - Texas Instruments |
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11 / 47 page  11 ADS8556, ADS8557, ADS8558 www.ti.com SBAS404D – OCTOBER 2006 – REVISED FEBRUARY 2016 Product Folder Links: ADS8556 ADS8557 ADS8558 Submit Documentation Feedback Copyright © 2006–2016, Texas Instruments Incorporated (1) All values are at TA = 25°C. (2) Calculated on the first nine harmonics of the input frequency. 6.6 Electrical Characteristics: ADS8556 over recommended operating free-air temperature range of –40°C to 125°C, AVDD = 4.5 V to 5 V, BVDD = 2.7 V to 5.5 V, HVDD = 10 V to 15 V, HVSS = –15 V to –10 V, VREF = 2.5 V (internal), and fDATA = 630 kSPS in parallel mode or 450 kSPS in serial mode (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP(1) MAX UNIT DC ACCURACY Resolution 16 Bits No missing codes 16 Bits INL Integral linearity error At TA = –40°C to 85°C –3 ±1.5 3 LSB At TA = –40°C to 125°C –4 ±1.5 4 DNL Differential linearity error At TA = –40°C to 85°C –1 ±0.75 1.5 LSB At TA = –40°C to 125°C –1 ±0.75 2 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 PSRR Power-supply rejection ratio At output code FFFFh, related to AVDD 60 dB SAMPLING DYNAMICS tACQ Acquisition time 280 ns tCONV Conversion time per ADC 1.26 μs tCCLK Internal conversion clock period 18.5 tCCLK 68.0 ns fDATA Throughput rate Parallel interface, internal clock and reference 630 kSPS Serial interface, internal clock and reference 450 AC ACCURACY SNR Signal-to-noise ratio At fIN = 10 kHz, TA = –40°C to 85°C 90 91.5 dB At fIN = 10 kHz, TA = –40°C to 125°C 89 91.5 SINAD Signal-to-noise ratio + distortion At fIN = 10 kHz, TA = –40°C to 85°C 87 89.5 dB At fIN = 10 kHz, TA = –40°C to 125°C 86.5 89.5 THD Total harmonic distortion(2) At fIN = 10 kHz, TA = –40°C to 85°C –94 –90 dB At fIN = 10 kHz, TA = –40°C to 125°C –94 –89.5 SFDR Spurious-free dynamic range At fIN = 10 kHz, TA = –40°C to 85°C 90 95 dB At fIN = 10 kHz, TA = –40°C to 125°C 89.5 95 Channel-to-channel isolation At fIN = 10 kHz 100 dB –3-dB small-signal bandwidth In 4 × VREF mode 48 MHz In 2 × VREF mode 24 |
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