BA6397 Rohm, BA6397 Datasheet - Page 5

• Manufacturer Part Number: BA6397
• Description: 4-channel BTL driver for CD players
• Manufacturer: Rohm

FElectrical characteristics (unless otherwise noted, Ta = 25_C, V
FCircuit operation
(1)
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
336
Optical disc ICs
Driver
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.
CC
= 8V, f = 1kHz, R
L
= 8 )
BA6397FP