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Número de pieza | BA6798S | |
Descripción | 4-channel BTL driver for CD players | |
Fabricantes | ROHM Semiconductor | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de BA6798S (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
No Preview Available ! Optical disc ICs
4-channel BTL driver for CD players
BA6798S
The BA6798S is a 4-channel H-bridge BTL driver for CD players and actuators. The 5V regulator and internal standard
operational amplifier make this IC suited to a broad range of applications.
FApplications
CD players and CD-ROM drives
FFeatures
1) 4-channel BTL driver.
2) SDIP M 24-pin package for high package power.
FAbsolute maximum ratings (Ta = 25_C)
3) Internal thermal shutdown circuit.
4) Driver gain is adjustable with a single attached resis-
tor.
5) Internal 5V regulator. (requires attached PNP tran-
sistor)
374
1 page 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 mo-
tor.
BA6798S
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.
378
5 Page |
Páginas | Total 8 Páginas | |
PDF Descargar | [ Datasheet BA6798S.PDF ] |
Número de pieza | Descripción | Fabricantes |
BA6798S | 4-channel BTL driver for CD players | ROHM Semiconductor |
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