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ADC12132CIMSA Fiches technique(PDF) 7 Page - National Semiconductor (TI) |
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ADC12132CIMSA Fiches technique(HTML) 7 Page - National Semiconductor (TI) |
7 / 41 page Electrical Characteristics (Continued) The following specifications apply for (V + =V A+=VD+ = +5V, VREF+ = +4.096V, and fully differential input with fixed 2.048V common-mode voltage) or (V + =V A+=VD+ = +3.3V, VREF+ = 2.5V and fully-differential input with fixed 1.250V common-mode voltage), V REF− = 0V, 12-bit + sign conversion mode, source impedance for analog inputs, VREF− and VREF+ ≤ 25Ω,f CK =fSK = 5 MHz, and 10 (tCK) acquisition time unless otherwise specified. Boldface limits apply for TA =TJ = T MIN to TMAX; all other limits TA =TJ = 25˚C. (Notes 7, 8, 9) Symbol Parameter Conditions Typical Limits Units (Note 10) (Note 11) (Limits) REFERENCE INPUT, ANALOG INPUTS AND MULTIPLEXER CHARACTERISTICS On Channel Leakage (Note 16) On Channel = 5V and 0.01 µA CH0–CH7 and COM Pins Off Channel = 0V On Channel = 0V and −0.01 µA Off Channel = 5V MUXOUT1 and MUXOUT2 V MUXOUT = 5.0V or 0.01 µA Leakage Current V MUXOUT =0V R ON MUX On Resistance V IN = 2.5V and 850 1900 Ω (max) V MUXOUT = 2.4V R ON Matching Channel to Channel V IN = 2.5V and 5 % V MUXOUT = 2.4V Channel to Channel Crosstalk V IN =5 VPP,fIN = 40 kHz −72 dB MUX Bandwidth 90 kHz DC and Logic Electrical Characteristics The following specifications apply for (V + =V A+=VD+ = +5V, VREF+ = +4.096V, and fully-differential input with fixed 2.048V common-mode voltage) or (V + =V A+=VD+ = +3.3V, VREF+ = +2.5V and fully-differential input with fixed 1.250V common-mode voltage), V REF− = 0V, 12-bit + sign conversion mode, source impedance for analog inputs, VREF− and VREF+ ≤ 25Ω,f CK =fSK = 5 MHz, and 10 (tCK) acquisition time unless otherwise specified. Boldface limits apply for TA =TJ = T MIN to TMAX; all other limits TA =TJ = 25˚C. (Notes 7, 8, 9) Symbol Parameter Conditions Typical (Note 10) V + =V A+= V + =V A+ = Units (Limits) V D+ = 3.3V V D+=5V Limits Limits (Note 11) (Note 11) CCLK, CS, CONV, DI, PD AND SCLK INPUT CHARACTERISTICS V IN(1) Logical “1” Input Voltage V A+=VD+=V + +10% 2.0 2.0 V (min) V IN(0) Logical “0” Input Voltage V A+=VD+=V + −10% 0.8 0.8 V (max) I IN(1) Logical “1” Input Current V IN =V + 0.005 1.0 1.0 µA (max) I IN(0) Logical “0” Input Current V IN = 0V −0.005 −1.0 −1.0 µA (min) DO, EOC AND DOR DIGITAL OUTPUT CHARACTERISTICS V OUT(1) Logical “1” V A+=VD+=V + − 10%, Output Voltage I OUT = −360 µA 2.4 2.4 V (min) V A+=VD+=V + − 10%, 2.9 4.25 V (min) I OUT = −10 µA V OUT(0) Logical “0” V A+=VD+=V + − 10% Output Voltage I OUT = 1.6 mA 0.4 0.4 V (max) I OUT TRI-STATE V OUT = 0V −0.1 −3.0 −3.0 µA (max) Output Current V OUT =V + −0.1 3.0 3.0 +I SC Output Short Circuit Source Current V OUT = 0V −14 mA www.national.com 7 |
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