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PDF SA9614 Data sheet ( Hoja de datos )
| Número de pieza | SA9614 | |
| Descripción | RF AMPLIFIER FOR DIGITAL SERVO SYSTEM | |
| Fabricantes | SILAN MICROELECTRONICS | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de SA9614 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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SA9614
RF AMPLIFIER FOR DIGITAL SERVO SYSTEM
DESCRIPTION
SA9614 is a RF amplifier, used for signal conversion and auto laser
power control (ALPC) between the CD optical pickup head and
decoding chip.
SA9614 includes interface of CD optical diode, RF signal amplifier
and equalizer, VREF generation circuit, automatic optical power
switching circuit (it suits for CD-A/V, CD-R, CD-R/W, CD-ROM).
FEATURES
SOP-16-225-1.27
* RF amplitude automatic adjustment circuit (it suits for CD-A/V, CD-
R, CD-R/W, CD-ROM).
* RF signal equalizer (including VCA).
* Auto laser power control circuit (ALPC).
* Operating voltage: 3V -7V, power dissipation (150mW @5V).
APPLICATIONS
ORDERING INFORMATION
Device
SA9614
Package
SOP-16-225-1.27
* CD Players
* VCD Players
BLOCK DIAGRAM
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.0 2006.07.28
Page 1 of 8
1 page  
APC CIRCUIT
SA9614
The constant power circuit is used to generate the constant power when diode is in the different state. APC
circuit realizes the constant power by monitoring the receiving power of diode, thereby to stabilize the RF input
amplitude.
In order to adapt to RF input signal of different disks, APC circuit adds the auto power adjusting function. It is to
adjust the output power by detecting the RF input signals and thus to adapt to various disks.
In the above figure, MON pin is the constant power monitor pin, LD is driver output pin which connects with a
PNP transistor. LD_ON is the enable port of APC circuit, high level active.
EQUALIZER (INCLUDE VCA AND OUTPUT STAGE)
BST 14
RFC 1
EQIN 10
RFG 8
VREF
VCA
EQ
EQ circuit
9 RFAC
EQ curve
The equalizer includes controllable gain amplifier VCA , equalizer circuit and signal amplifier.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.0 2006.07.28
Page 5 of 8
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet SA9614.PDF ] | |
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