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ADC121S051 bảng dữ liệu(PDF) 5 Page - Texas Instruments |
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ADC121S051 bảng dữ liệu(HTML) 5 Page - Texas Instruments |
5 / 24 page ADC121S051 www.ti.com SNAS302I – JULY 2005 – REVISED JANUARY 2014 ADC121S051 Converter Electrical Characteristics (1)(2) (continued) The following specifications apply for VA = +2.7V to 5.25V, fSCLK = 4 MHz to 10 MHz, fSAMPLE = 200 ksps to 500 ksps, CL = 15 pF, unless otherwise noted. Boldface limits apply for TA = TMIN to TMAX: all other limits TA = 25°C. Limits Symbol Parameter Conditions Typical Units (2) DIGITAL OUTPUT CHARACTERISTICS ISOURCE = 200 µA VA − 0.07 VA − 0.2 V (min) VOH Output High Voltage ISOURCE = 1 mA VA − 0.1 V ISINK = 200 µA 0.03 0.4 V (max) VOL Output Low Voltage ISINK = 1 mA 0.1 V IOZH, IOZL TRI-STATE® Leakage Current ±0.1 ±10 µA (max) COUT TRI-STATE® Output Capacitance 2 4 pF (max) Output Coding Straight (Natural) Binary POWER SUPPLY CHARACTERISTICS 2.7 V (min) VA Supply Voltage 5.25 V (max) VA = +5.25V, 1.66 3.0 mA (max) fSAMPLE = 200 ksps Supply Current, Normal Mode (Operational, CS low) VA = +3.6V, 0.46 1.3 mA (max) fSAMPLE = 200 ksps IA VA = +5.25V, fSCLK = 0 MHz, 500 nA fSAMPLE = 0 ksps Supply Current, Shutdown (CS high) VA = +5.25V, fSCLK = 10 MHz, 60 µA fSAMPLE = 0 ksps VA = +5.25V 8.7 15.8 mW (max) Power Consumption, Normal Mode (Operational, CS low) VA = +3.6V 1.7 4.7 mW (max) VA = +5.25V, fSCLK = 0 MHz, PD 2.6 µW fSAMPLE = 0 ksps Power Consumption, Shutdown (CS high) VA = +5.25V, fSCLK = 10 MHz, 315 µW fSAMPLE = 0 ksps AC ELECTRICAL CHARACTERISTICS 4 MHz (min) fSCLK Clock Frequency See (3) 10 MHz (max) 200 ksps (min) fS Sample Rate See (3) 500 ksps (max) 40 % (min) DC SCLK Duty Cycle fSCLK = 10 MHz 50 60 % (max) tACQ Minimum Time Required for Acquisition 350 ns (max) tQUIET See (4) 50 ns (min) tAD Aperture Delay 3 ns tAJ Aperture Jitter 30 ps (3) This is the frequency range over which the electrical performance is ensured. The device is functional over a wider range which is specified under Operating Ratings. (4) Minimum Quiet Time required by bus relinquish and the start of the next conversion. Copyright © 2005–2014, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: ADC121S051 |
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