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TPL0401B 데이터시트(PDF) 11 Page - Texas Instruments |
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TPL0401B 데이터시트(HTML) 11 Page - Texas Instruments |
11 / 18 page DDR3 DIMM1 1.5 V VREF1 _ + 1 kW DPOT TPL0401A/B OP-AMP LMV321 1 kW TPL0401A TPL0401B www.ti.com SLIS144 – SEPTEMBER 2011 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, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Link(s): TPL0401A TPL0401B |
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