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LM4040AI-4.1 Scheda tecnica(PDF) 8 Page - National Semiconductor (TI) |
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LM4040AI-4.1 Scheda tecnica(HTML) 8 Page - National Semiconductor (TI) |
8 / 41 page DC and Logic Electrical Characteristics (Continued) The following specifications apply for V + =V A+=VD+ = +5.0 VDC,VREF+ = +4.096 VDC,VREF−=0 VDC, 12-bit + sign conver- sion mode, f CK =fSK = 8 MHz for the ADC12H030, ADC12H032, ADC12H034 and ADC12H038, fCK =fSK = 5 MHz for the ADC12030, ADC12032, ADC12034 and ADC12038, R S =25 Ω, source impedance for V REF+ and VREF− ≤ 25Ω, fully-differential input with fixed 2.048V common-mode voltage, and 10(t CK) acquisition time unless otherwise specified. Bold- face limits apply for T A =TJ =TMIN to TMAX; all other limits TA =TJ = 25˚C. (Notes 7, 8, 9) Symbol Parameter Conditions Typical Limits Units (Note 10) (Note 11) (Limits) POWER SUPPLY CHARACTERISTICS and ADC12038 CS = HIGH, Powered Down, CCLK off 20 µA Digital Supply Current Awake 2.3 3.2 mA ADC12H030, ADC12H032, CS = HIGH, Powered Down, CCLK on 0.9 mA ADC12H034 and ADC12H038 CS = HIGH, Powered Down, CCLK off 20 µA I A+ Positive Analog Supply Current Awake 2.7 4.0 mA (max) CS = HIGH, Powered Down, CCLK on 10 µA CS = HIGH, Powered Down, CCLK off 0.1 µA I REF Reference Input Current Awake 70 µA CS = HIGH, Powered Down 0.1 µA AC Electrical Characteristics The following specifications apply for V + =V A+=VD+ = +5.0 VDC,VREF+ = +4.096 VDC,VREF−=0 VDC, 12-bit + sign conver- sion mode, t r =tf = 3 ns, fCK =fSK = 8 MHz for the ADC12H030, ADC12H032, ADC12H034 and ADC12H038, fCK =fSK =5 MHz for the ADC12030, ADC12032, ADC12034 and ADC12038, R S =25 Ω, source impedance for V REF+ and VREF− ≤ 25Ω, fully-differential input with fixed 2.048V common-mode voltage, and 10(t CK) acquisition time unless otherwise specified. Bold- face limits apply for T A =TJ =TMIN to TMAX; all other limits TA =TJ = 25˚C. (Note 17) Symbol Parameter Conditions Typical (Note 10) ADC12H030/2/4/8 ADC12030/2/4/8 Units (Limits) Limits Limits (Note 11) (Note 11) f CK Conversion Clock 10 85 MHz (max) (CCLK) Frequency 1 MHz (min) f SK Serial Data Clock 10 85 MHz (max) SCLK Frequency 0 Hz (min) Conversion Clock 40 40 % (min) Duty Cycle 60 60 % (max) Serial Data Clock 40 40 % (min) Duty Cycle 60 60 % (max) t C Conversion Time 12-Bit + Sign or 12-Bit 44(t CK) 44(t CK) 44(t CK) (max) 5.5 8.8 µs (max) 8-Bit + Sign or 8-Bit 21(t CK) 21(t CK) 21(t CK) (max) 2.625 4.2 µs (max) www.national.com 8 |
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