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ADS8329IBRSAR bảng dữ liệu(PDF) 6 Page - Texas Instruments |
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ADS8329IBRSAR bảng dữ liệu(HTML) 6 Page - Texas Instruments |
6 / 40 page www.ti.com ADS8329 ADS8330 SLAS516 – DECEMBER 2006 SPECIFICATIONS (continued) T A = –40°C to 85°C, +VBD = +VA × 1.5 to +1.65 V, Vref = 2.5 V, fSAMPLE = 1 MHz for 3 V ≤ +VA ≤ 3.6 V, fSAMPLE = 900 kHz for 3 V < +VA ≤ 2.7 V using external clock (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT DYNAMIC CHARACTERISTICS VIN = 2.5 Vpp at 10 kHz –102 THD Total harmonic distortion (4) dB VIN = 2.5 Vpp at 100 kHz –93 VIN = 2.5 Vpp at 10 kHz 89 SNR Signal-to-noise ratio dB VIN = 2.5 Vpp at 100 kHz 88 VIN = 2.5 Vpp at 10 kHz 88.5 SINAD Signal-to-noise + distortion dB VIN = 2.5 Vpp at 100 kHz 88 VIN = 2.5 Vpp at 10 kHz 104 SFDR Spurious free dynamic range dB VIN = 2.5 Vpp at 100 kHz 94.2 -3dB Small signal bandwidth 30 MHz CLOCK Internal conversion clock frequency 21 22.3 23.5 MHz Used as I/O clock only 42 SCLK External serial clock MHz As I/O clock and conversion clock 1 42 EXTERNAL VOLTAGE REFERENCE INPUT Vref[REF+ – (REF–)] 3.6 V ≥ +VA ≥ 2.7 V 2.475 3 Input reference Vref V range (REF–) – AGND –0.1 0.1 Resistance (5) Reference input 40 k Ω DIGITAL INPUT/OUTPUT Logic family — CMOS VIH High-level input voltage (+VA × 1.5) V ≥ +VBD ≥ 1.65 V 0.65 × (+VBD) +VBD + 0.3 V VIL Low-level input voltage (+VA × 1.5) V ≥ +VBD ≥ 1.65 V –0.3 0.35 × (+VBD) V II Input current VI = +VBD or BDGND -50 50 nA Ci Input capacitance 5 pF (+VA × 1.5) V ≥ +VBD ≥ 1.65 V, VOH High-level output voltage +VBD – 0.6 +VBD V IO = 100 µA (+VA × 1.5) V ≥ +VBD ≥ 1.65 V, VOL Low-level output voltage 0 0.4 V IO = 100 µA CO Output capacitance 5 pF CL Load capacitance 30 pF Data format — straight binary POWER SUPPLY REQUIREMENTS +VBD 1.65 +VA 1.5 × (+VA) V Power supply fs ≤ 1 MHz 3 3.6 voltage +VA V fs ≤ 900 kHz 2.7 3.6 1-MHz Sample rate, 5.1 6.1 3 V ≤ +VA ≤ 3.6 V 900-kHz Sample rate, mA 4.84 Supply current 2.7 V ≤ +VA ≤ 3 V Nap mode 0.25 0.4 PD Mode 2 50 nA Buffer I/O supply current 1 MSPS, +VBD = 1.8 V 0.05 mA +VBD = 1.8 V, 3 V ≤ +VA ≤ 3.6 V 15.5 19 Power dissipation mW +VBD = 1.8 V, 2.7 V ≤ +VA ≤ 3 V 13.2 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% 6 Submit Documentation Feedback |
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