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SPC572L64F2 датащи(PDF) 43 Page - STMicroelectronics |
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SPC572L64F2 датащи(HTML) 43 Page - STMicroelectronics |
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43 / 112 page ![]() DocID027866 Rev 5 43/112 SPC572Lx Electrical characteristics 111 Figure 11. Test circuit 3.12 ADC specifications 3.12.1 ADC input description Figure 12 shows the input equivalent circuit for fast SARn channels. V + - A IXTAL Bias Comparator OF VSSOSC XTAL EXTAL VSS PCB GND Tester AL Z = R + j ωL VDDOSC VEXTAL = 0 V VXTAL = 0 V ALC INACTIVE Conditions Table 23. Internal RC oscillator electrical specifications Symbol C Parameter Conditions Value Unit Min Typ Max fTarget CC D IRC target frequency — — 16 — MHz δfvar_noT CC P IRC frequency variation without temperature compensation —–8 — +8 % δfvar_T CC T IRC frequency variation with temperature compensation TJ < 150 °C –1.5 — +1.5 % δfvar_SW — T IRC frequency accuracy after software trimming accuracy(1) Trimming temperature –1 — +1 % tstart_noT CC T Startup time to reach within fvar_noT Factory trimming already applied —— 5 µs tstart_T CC D Startup time to reach within fvar_T Factory trimming already applied — — 120 µs 1. The typical user trim step size of δfTRIM =0.35 % |
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