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ADS8557IPM Datasheet(PDF) 4 Page - Texas Instruments |
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ADS8557IPM Datasheet(HTML) 4 Page - Texas Instruments |
4 / 40 page ELECTRICAL CHARACTERISTICS: ADS8556 ADS8556 ADS8557 ADS8558 SBAS404A – OCTOBER 2006 – REVISED AUGUST 2009 ............................................................................................................................................... www.ti.com Over recommended operating free-air temperature range of –40°C to +125°C, AVDD = 4.5V to 5V, BVDD = 2.7V to 5.5V, HVDD = 10V to 15V, HVSS = –15V to –10V, VREF = 2.5V (internal), and fDATA = 630kSPS in parallel mode or 450kSPS in serial mode, unless otherwise noted. ADS8556 PARAMETER CONDITIONS MIN TYP(1) MAX UNIT DC ACCURACY Resolution 16 Bits No missing codes 16 Bits At TA = –40°C to +85°C –3 ±1.5 3 LSB Integral linearity error INL At TA = –40°C to +125°C –4 ±1.5 4 LSB At TA = –40°C to +85°C –1 ±0.75 1.5 LSB Differential linearity error DNL At TA = –40°C to +125°C –1 ±0.75 2 LSB Offset error –4.0 ±0.8 4.0 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 1.26 µs 18.5 tCCLK Internal conversion clock period tCCLK 68.0 ns Parallel interface, 630 kSPS internal clock and reference Throughput rate fDATA Serial interface, 450 kSPS internal clock and reference AC ACCURACY At fIN = 10kHz, TA = –40°C to +85°C 90 91.5 dB Signal-to-noise ratio SNR At fIN = 10kHz, TA = –40°C to +125°C 89 91.5 dB At fIN = 10kHz, TA = –40°C to +85°C 87 89.5 dB Signal-to-noise ratio + distortion SINAD At fIN = 10kHz, TA = –40°C to +125°C 86.5 89.5 dB At fIN = 10kHz, TA = –40°C to +85°C –94 –90 dB Total harmonic distortion(2) THD At fIN = 10kHz, TA = –40°C to +125°C –94 –89.5 At fIN = 10kHz, TA = –40°C to +85°C 90 95 dB Spurious-free dynamic range SFDR At fIN = 10kHz, TA = –40°C to +125°C 89.5 95 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. 4 Copyright © 2006–2009, Texas Instruments Incorporated Product Folder Link(s): ADS8556 ADS8557 ADS8558 |
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