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BA8274F Datasheet(PDF) 7 Page - Rohm |
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BA8274F Datasheet(HTML) 7 Page - Rohm |
7 / 9 page BA8274 / F Audio ICs 7/8 Note): R1, R2 and R3 are calculated from the capacitive loading and a 1 µsec time constant on each bus node. For an addition to an existing system, R2 (the new value for R2) is shown as being calculated from the parallel combination of R2 and the scaled value of R3; while for a permanent system R2, and scaled values of R1 and R3 have been used. Note that this example has used scaled resistor values and combined the node and cable capacitances. Check for maximum pull-up current: = 17.6mA < 30mA (5 −0.4)V 260 Ω Operation notes 1. About operation voltage supply range Within operation voltage supply range, basic circuit function operation is guaranteed within operation ambient temp. But please confirm set up of constant and element, voltage set up and temp set up on use. 2. About operation temp range If it within recommended operation voltage range, circuit function operation is guaranteed within operation temp. It corralled to conditions of power dissipation to temp. Please watch out except condition stipulated by electrical characteristics within the range, it cannot guarantee standard value of electrical characteristics. But it retains original function. 3. SX, SY, I 2C BUS, SDA or SCL Because the two buffer circuits in the BA8274/F are identical either input pin can be used as the I 2C BUS SDA data line, or the SCL clock line. 4. LX, LY, Buffered bus, LDA or LCL On the buffered low impedance line side, the corresponding output becomes LDA and LCL. Electrical characteristic curves 0.05 0.1 0.15 0.2 0.3 0.4 0.25 0.35 0 0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1 S PIN VOLTAGE VSX, VSY : (V) Fig.5 S pin voltage-drive current ILX, ILY |
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