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LV5682P Datasheet(PDF) 10 Page - Sanyo Semicon Device |
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LV5682P Datasheet(HTML) 10 Page - Sanyo Semicon Device |
10 / 15 page LV5682P No.A1833-10/15 • ILM output voltage setting method Formula for ILM voltage calculation Example : ILM = 9V setting method The ILM_F voltage is determined by the internal band gap voltage of the IC (typ = 1.26V). When R3 = 150k, the ILM output voltage will be as follows: • AUDIO output voltage setting method Formula for AUDIO voltage calculation The circuit must be designed in such a way that the R1:R2 ratio satisfies the formula given above for the AUDIO voltage that has been set. Example : AUDIO = 8.5V setting method The AUDIO_F voltage is determined by the internal band gap voltage of the IC (typ = 1.26V). Note : In the above, the typical values are given in all instances for the values used and, as such, they will vary due to the effects of production-related variations of the IC and external resistors. V V V AUDIO 8.49 1.26 5.74 1.26 ≅ + × = V V k k V ILM 8.94 1.26 Ω 42.69 Ω 7 1.26 ≅ + × = 3 2 3 2 3 2 1 // R R R R R R Z + ⋅ = = ] [ 26 . 1 ] [ 1.26 1 1 V Z R V ILM + × = ( ) 1.26 1.26 1 1 R ILM Z ⋅ − = 1 2 1 2 3 Z R Z R R − ⋅ = ( ) Ω 43 1.26 Ω 7 1.26 9 1 k V k V V Z ≅ ⋅ − = Ω 42.69 Ω 150 Ω 59.67 Ω 150 Ω 59.67 1 k k k k k Z ≅ + ⋅ = ′ ] 1.26[ ] 1.26[ 1 2 V R R V AUDIO + × = ( ) 1.26 1.26 2 1 − = AUDIO R R ( ) 5.75 1.26 1.26 8.5 2 1 ≅ − = R R 5.74 Ω 4.7 Ω 27 2 1 ≅ = k k R R ILM ILM_F Z1=R2/R3 R3 R2 1.26V R1 5 6 AUDIO AUDIO_F R1 1.26V R2 10 8 Ω → ≅ − ⋅ = k k k k k k R 150 Ω 9 . 53 1 Ω 3 4 Ω 59.67 Ω 3 4 Ω 59.67 3 |
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