전자부품 데이터시트 검색엔진 |
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Q67120-C0937 데이터시트(PDF) 40 Page - Siemens Semiconductor Group |
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Q67120-C0937 데이터시트(HTML) 40 Page - Siemens Semiconductor Group |
40 / 56 page SAB 80C515/80C535 Semiconductor Group 39 A/D Converter Characteristics VCC = 5 V ± 10 %; VSS = 0 V; VAREF = VCC ± 5 %; VAGND = VSS ± 0.2 V; VI ntAREF – VIntAGND ≥ 1 V; TA = 0 to 70 ˚C for SAB 80C515/80C535 TA = – 40 to 85 ˚C for SAB 80C515/80C535-T40/85 Parameter Symbol Limit values Unit Test condition min. typ. max. Analog input voltage VAINPUT VAGND – 0.2 – VAREF + 0.2 V 9) Analog input capacitance CI –25 45 pF 7) Load time tL –– 2 tCY µs– Sample time (incl. load time) tS –– 7 tCY µs– Conversion time (incl. sample time) tC –– 13 tCY µs– Total unadjusted error TUE – ± 1 ± 2 LSB VI ntAREF = VAREF = VCC VI ntAGND = VAGND = VSS7) VAREF supply current IREF –– 5 mA 8) Internal reference error VI nt REFERR – ± 30 mV 8) 7) The output impedance of the analog source must be low enough to assure full loading of the sample capacitance (C I ) during load time (tL ) . After charging of the internal capacitance (C I ) in the load time (tL) the analog input must be held constant for the rest of the sample time (tS ) 8) The differential impedance r D of the analog reference voltage source must be less than 1 k Ω at reference supply voltage. 9) Exceeding these limit values at one or more input channels will cause additional current which is sinked / sourced at these channels. This may also affect the accuracy of other channels which are operated within these specifications. |
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