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BA6798 Scheda tecnica(PDF) 5 Page - Rohm |
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BA6798 Scheda tecnica(HTML) 5 Page - Rohm |
5 / 8 page 378 Optical disc ICs BA6798S FCircuit operation (1) Driver Inputs to the IC are the focus tracking error signal from the servo preamplifier and the control signal from the mo- tor. The input signals, which normally center on 2.5V, are V / I converted by the preamplifier, generating a current corresponding to the input voltage. This current is passed through a resistor and into the internal reference voltage component, the preamplifier output being a sig- nal centering on the internal reference voltage. Both pos- itive and negative phases are created during V / I conver- sion, generating BTL output via the driver buffer. (2) Regulator This is a typical series regulator that generates a refer- ence voltage internally. A PNP low saturation transistor must be connected. |
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Descrizione simile - BA6798 |
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