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DM505LRBABF Datasheet(PDF) 231 Page - Texas Instruments |
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DM505LRBABF Datasheet(HTML) 231 Page - Texas Instruments |
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231 / 295 page ![]() 231 DM505 www.ti.com SPRS976E – NOVEMBER 2016 – REVISED MAY 2018 Submit Documentation Feedback Applications, Implementation, and Layout Copyright © 2016–2018, Texas Instruments Incorporated Table 7-8. DCap Scheme Vaule [uF] Size Qty Capacitance [uF] Cap Type: Automotive GCM series, X7R 22 1206 1 22 4.7 805 1 4.7 2.2 603 1 2.2 1 603 1 1 0.47 603 1 0.47 0.22 603 1 0.22 0.1 402 6 0.6 Totals 12 31.19 IR Drop: vdd_dspeve Figure 7-16. vdd_dspeve Voltage/IR Drop [All Layers] Dynamic analysis of this PCB design for the CORE power domain determined the vdd_dspeve decoupling capacitor loop inductance and impedance vs frequency analysis shown below. As you can see, the loop inductance values ranged from 0.68 –1.79nH and were less than maximum 2.0nH recommended. Table 7-9. Decoupling Design Detail Summary Cap Reference Description Loop Inductacne at 50MHz [nH] Footprint Types PCB Side Distance to Ball-Field [mils] Value Size C5101 0.73 2vWEE Bottom 82 0.1 0402 C5100 0.78 2vWEE Bottom 107 0.1 0402 |
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