BA6896FP

Optical disc ICs 4-channel BTL driver for CD players BA6896FP The BA6896FP is a 4-channel BTL driver designed for CD player motor and actuator drives. The internal 5V regulator and standard operational amplifier make this IC suitable for a wide spectrum of applications. FApplications CD players, CD-ROM drives FFeatures 1) HSOP 28-pin package, for application miniaturization. 2) A minimum of attached components. 3) Driver gain is adjustable with a single attached resistor. 4) Internal 5V regulator. (requires attached PNP transistor) FAbsolute maximum ratings (Ta = 25_C) 5) Internal standard operational amplifier. 6) Internal thermal shutdown function. 7) The output current between pins 1 and 2 is mutable with the external mute pin. 382 Optical disc ICs FBlock diagram BA6896FP FPin descriptions 383 Optical disc ICs FPin equivalent circuit diagrams BA6896FP 384 Optical disc ICs FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC = 8V, f = 1kHz, RL = 8Ω) BA6896FP 385 Optical disc ICs FMeasurement circuit BA6896FP 386 Optical disc ICs FCircuit operation (1) Driver Inputs to the IC are the focus tracking error signal from the servo preamplifier and the control signal from the motor. 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 BA6896FP passed through a resistor and into the internal reference voltage component, the preamplifier ou...