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ADS7279 Arkusz danych(PDF) 4 Page - Texas Instruments |
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ADS7279 Arkusz danych(HTML) 4 Page - Texas Instruments |
4 / 51 page ADS7279 ADS7280 SBAS436A – MAY 2008 – REVISED JUNE 2009 ............................................................................................................................................................... www.ti.com ELECTRICAL CHARACTERISTICS (continued) At TA = –40°C to +85°C, +VA = 4.5V to 5.5V, +VBD = +1.65V to +5.5V, VREF = 5V, and fSAMPLE = 1MHz, unless otherwise noted. ADS7279, ADS7280 PARAMETER TEST CONDITIONS MIN TYP MAX UNIT DYNAMIC CHARACTERISTICS VIN = 5VPP at 10kHz –100.1 THD Total harmonic distortion(4) dB VIN = 5VPP at 100kHz –89.1 VIN = 5VPP at 10kHz 85.9 SNR Signal-to-noise ratio dB VIN = 5VPP at 100kHz 81.0 84.3 VIN = 5VPP at 10kHz 85.7 SINAD Signal-to-noise + distortion dB VIN = 5VPP at 100kHz 82.7 VIN = 5VPP at 10kHz 105.3 SFDR Spurious-free dynamic range dB VIN = 5VPP at 100kHz 91.3 –3dB small-signal bandwidth 30 MHz CLOCK Internal conversion clock frequency 21 23 24.5 MHz Used as I/O clock only 50 SCLK external serial clock MHz As I/O clock and conversion clock 1 42 EXTERNAL VOLTAGE REFERENCE INPUT Input VREF[REF+ – (REF–)] 0.3 +VA VREF reference V (REF–) – AGND –0.1 0.1 range Resistance(5) Reference input 40 k Ω DIGITAL INPUT/OUTPUT Logic family—CMOS VIH High-level input voltage 5.5V ≥ +VBD ≥ 4.5V 0.65 × (+VBD) +VBD + 0.3 V VIL Low-level input voltage 5.5V ≥ +VBD ≥ 4.5V –0.3 0.35 × (+VBD) V II Input current VI = +VBD or BDGND –50 50 nA CI Input capacitance 5 pF VOH High-level output voltage 5.5V ≥ +VBD ≥ 4.5V, IO = 100µA +VBD – 0.6 +VBD V VOL Low-level output voltage 5.5V ≥ +VBD ≥ 4.5V, IO = 100µA 0 0.4 V CO Output capacitance 5 pF CL Load capacitance 30 pF Data format—straight binary POWER-SUPPLY REQUIREMENTS +VBD 1.65 3.3 5.5 V Power-supply voltage +VA 4.5 5 5.5 V 1MHz Sample rate 5.7 7.0 mA Supply current Nap or Auto Nap mode 0.3 0.5 Deep power-down mode 0.004 1 µA 1MSPS, BVDD = 1.8V 0.1 0.5 Buffer I/O supply current mA 1MSPS, BVDD = 3V 0.5 1.2 AVDD = 5V, BVDD = 1.8V 28.7 35.9 Power dissipation mW AVDD = 5V, BVDD = 3V 30.0 38.6 TEMPERATURE RANGE TA Operating free-air temperature –40 +85 °C (4) Calculated on the first nine harmonics of the input frequency. (5) Can vary ±30%. 4 Submit Documentation Feedback Copyright © 2008–2009, Texas Instruments Incorporated Product Folder Link(s): ADS7279 ADS7280 |
Podobny numer części - ADS7279_14 |
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Podobny opis - ADS7279_14 |
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