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LM4985 Datasheet(PDF) 27 Page - Texas Instruments |
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LM4985 Datasheet(HTML) 27 Page - Texas Instruments |
27 / 33 page LM4985, LM4985TMEVAL www.ti.com SNAS346B – MAY 2006 – REVISED MAY 2006 Volume Control Settings Binary Values The minimum volume setting is set to –76dB when 00000 is loaded into the volume control register. Incrementing the volume control register in binary fashion increases the volume control setting, reaching full scale at 11111. Table 2 shows the value of the gain for each of the 32 binary volume control settings. Table 2. Binary Values for the Different Volume Control Gain Settings Gain B4 B3 B2 B1 B0 18 1 1 1 1 1 17 1 1 1 1 0 16 1 1 1 0 1 15 1 1 1 0 0 14 1 1 0 1 1 13 1 1 0 1 0 12 1 1 0 0 1 10 1 1 0 0 0 8 1 0 1 1 1 6 1 0 1 1 0 4 1 0 1 0 1 2 1 0 1 0 0 0 1 0 0 1 1 –2 1 0 0 1 0 –4 1 0 0 0 1 –6 1 0 0 0 0 –8 0 1 1 1 1 –10 0 1 1 1 0 –12 0 1 1 0 1 –14 0 1 1 0 0 –16 0 1 0 1 1 –18 0 1 0 1 0 –21 0 1 0 0 1 –24 0 1 0 0 0 –27 0 0 1 1 1 –30 0 0 1 1 0 –34 0 0 1 0 1 –38 0 0 1 0 0 –44 0 0 0 1 1 –52 0 0 0 1 0 –62 0 0 0 0 1 –76 0 0 0 0 0 Revision History Rev Date Description 1.0 05/17/06 Initial WEB release. Copyright © 2006, Texas Instruments Incorporated Submit Documentation Feedback 27 Product Folder Links: LM4985 LM4985TMEVAL |
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