BA6398 Просмотр технического описания (PDF) - ROHM Semiconductor

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BA6398

4-channel BTL driver for CD players

ROHM Semiconductor 

Optical disc ICs

FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC = 8V, f = 1kHz, RL = 8Ω)

BA6398FP

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. Two sys-

tems (positive phase and negative phase) are created

during V / I conversion, generating BTL output via the

driver buffer.

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