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ADC121S021 Datasheet(PDF) 6 Page - Texas Instruments |
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ADC121S021 Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 26 page  6 ADC121S021 SNAS305J – JULY 2005 – REVISED MARCH 2016 www.ti.com Product Folder Links: ADC121S021 Submit Documentation Feedback Copyright © 2005–2016, Texas Instruments Incorporated Electrical Characteristics (continued) VA = 2.7 V to 5.25 V, fSCLK = 1 MHz to 4 MHz, fSAMPLE = 50 ksps to 200 ksps, CL = 15 pF, unless otherwise noted. Typical limits apply for TA = 25°C; minimum and maximum limits apply for TA = –40°C to 85°C, unless otherwise noted. All limits (1)(2)(2) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT (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) Required by bus relinquish and the start of the next conversion. DIGITAL INPUT CHARACTERISTICS VIH Input high voltage VA = 5.25 V TA = –40°C to 85°C 2.4 V VA = 3.6 V TA = –40°C to 85°C 2.1 VIL Input low voltage VA = 5 V TA = –40°C to 85°C 0.8 V VA = 3 V TA = –40°C to 85°C 0.4 IIN Input current VIN = 0 V or VA ±0.1 ±1 µA CIND Digital input capacitance 2 4 pF DIGITAL OUTPUT CHARACTERISTICS VOH Output high voltage ISOURCE = 200 µA VA – 0.2 VA – 0.07 V ISOURCE = 1 mA VA – 0.1 VOL Output low voltage ISINK = 200 µA 0.03 0.4 V ISINK = 1 mA 0.1 IOZH, IOZL TRI-STATE ® leakage current ±0.1 ±10 µA COUT TRI-STATE output capacitance 2 4 pF Output coding Straight (Natural) Binary POWER SUPPLY CHARACTERISTICS VA Supply voltage 2.7 5.25 V IA Supply current, normal mode (operational, CS low) VA = 5.25 V, fSAMPLE = 200 ksps 1.5 2.8 mA VA = 3.6 V, fSAMPLE = 200 ksps 0.4 1.2 Supply current, shutdown (CS high) fSCLK = 0 MHz, VA = 5.25 V, fSAMPLE = 0 ksps 500 nA fSCLK = 4 MHz, VA = 5.25 V, fSAMPLE= 0 ksps 60 µA PD Power consumption, normal mode (operational, CS low) VA = 5.25 V 7.9 14.7 mW VA = 3.6 V 1.5 4.3 Power consumption, shutdown (CS high) fSCLK = 0 MHz, VA = 5.25 V, fSAMPLE = 0 ksps 2.6 µW VA = 5.25 V, fSCLK = 4 MHz, fSAMPLE= 0 ksps 315 AC ELECTRICAL CHARACTERISTICS fSCLK Clock frequency(3) 1 4 MHz fS Sample rate(3) 50 200 ksps DC SCLK duty cycle fSCLK = 4 MHz 40% 50% 60% tACQ Minimum acquisition time 350 ns tQUIET Minimum quiet time(4) 50 ns tAD Aperture delay 3 ns tAJ Aperture jitter 30 ps |
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