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TPL0401A-10 Fiches technique(PDF) 11 Page - Texas Instruments |
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TPL0401A-10 Fiches technique(HTML) 11 Page - Texas Instruments |
11 / 22 page DDR3 DIMM1 1.5 V VREF1 _ + 1 kW DPOT TPL0401A/B OP-AMP LMV321 1 kW TPL0401A TPL0401B TPL0401C www.ti.com SLIS144A – SEPTEMBER 2011 – REVISED MARCH 2012 TYPICAL APPLICATION Figure 15. DDR3 Voltage Reference Adjustment Below table shows Ideal values of resistance for a 10k Ω DPOT. The absolute values can vary significantly, but the ratio (Rhw/Rwl) is extremely accurate. Table 1. Resistance Values Table Step Binary Rwl (k Ω) Rhw (k Ω) Rhw/Rwl 0 0 0.00 10.00 0.00 1 1 0.08 9.92 0.01 2 10 0.16 9.84 0.02 3 11 0.23 9.77 0.02 4 100 0.31 9.69 0.03 5 101 0.39 9.61 0.04 6 110 0.47 9.53 0.05 7 111 0.55 9.45 0.06 8 1000 0.63 9.38 0.07 9 1001 0.70 9.30 0.08 10 1010 0.78 9.22 0.08 11 1011 0.86 9.14 0.09 12 1100 0.94 9.06 0.10 13 1101 1.02 8.98 0.11 14 1110 1.09 8.91 0.12 15 1111 1.17 8.83 0.13 16 10000 1.25 8.75 0.14 17 10001 1.33 8.67 0.15 18 10010 1.41 8.59 0.16 19 10011 1.48 8.52 0.17 20 10100 1.56 8.44 0.19 21 10101 1.64 8.36 0.20 22 10110 1.72 8.28 0.21 23 10111 1.80 8.20 0.22 24 11000 1.88 8.13 0.23 25 11001 1.95 8.05 0.24 26 11010 2.03 7.97 0.25 27 11011 2.11 7.89 0.27 28 11100 2.19 7.81 0.28 29 11101 2.27 7.73 0.29 30 11110 2.34 7.66 0.31 31 11111 2.42 7.58 0.32 Copyright © 2011–2012, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Link(s): TPL0401A TPL0401B TPL0401C |
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