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PDF BA6798S Data sheet ( Hoja de datos )
| Número de pieza | BA6798S | |
| Descripción | 4-channel BTL driver for CD players | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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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 ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
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