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ADS8638SRGER bảng dữ liệu(PDF) 4 Page - Texas Instruments |
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ADS8638SRGER bảng dữ liệu(HTML) 4 Page - Texas Instruments |
4 / 76 page ADS8634 ADS8638 SBAS541A – MAY 2011 – REVISED AUGUST 2011 www.ti.com ELECTRICAL CHARACTERISTICS: ADS8634, ADS8638 (continued) Minimum/maximum specifications at TA = –40°C to +125°C, fSAMPLE = 1MSPS, HVDD = 10V to 15V, HVSS = –10V to –15V, AVDD = 4.75V to 5.25V, DVDD = 2.7V to 3.6V, and VREF = 2.5V, unless otherwise noted. Typical specifications at +25°C, fSAMPLE = 1MHz, HVDD = 10V, HVSS = –10V, AVDD = 3.3V, DVDD = 3.3V, and VREF = 2.5V, unless otherwise noted. ADS8634, ADS8638 PARAMETER TEST CONDITIONS MIN TYP MAX UNIT DYNAMIC CHARACTERISTICS At 1kHz –81 dB Total harmonic distortion(6) (THD) At 100kHz –80 dB At 1kHz 71 71.8 dB Signal-to-noise ratio (SNR) At 100kHz 71.1 dB At 1kHz 70.1 71.3 dB Signal-to-noise and distortion ratio (SINAD) At 100kHz 70.5 dB At 1kHz –83 dB Spurious-free dynamic range (SFDR) At 100kHz –80 dB Full-power bandwidth At –3dB 1 MHz DIGITAL INPUT/OUTPUT Logic family CMOS V VIH 0.7 DVDD V VIL 0.3 DVDD V Logic level VOH With 20pF load on SDO 0.8 DVDD V VOL With 20pF load on SDO 0.2 DVDD V EXTERNAL VOLTAGE REFERENCE 3.0 or Reference input AVDD, VREF 2.0 V voltage range whichever is less INTERNAL VOLTAGE REFERENCE Reference output voltage 2.5 V Initial accuracy –1.2 1.2 % Temperature drift 20 ppm/ °C Drive current, source(7) 750 µA Drive current, sink 20 µA Driver output impedance 1 Ω Turn-on settling time With 10 µF decoupling capacitor from REF to REFGND 9 ms INTERNAL TEMPERATURE SENSOR Absolute accuracy 5 % of FSR (6) Calculated on the first nine harmonics of the input frequency. (7) Internal reference output is short-circuit protected. In case of short-circuit to ground, the drive current is limited to this value. 4 Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated Product Folder Link(s): ADS8634 ADS8638 |
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