|
|
Número de pieza | CXA2525AN | |
Descripción | RF Amplifier for CD Player and CD-ROM | |
Fabricantes | Sony Corporation | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de CXA2525AN (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
No Preview Available ! CXA2525AM/AN
RF Amplifier for CD Player and CD-ROM
For the availability of this product, please contact the sales office.
Description
The CXA2525AM/AN is an IC for RF signal
processing of CD player and CD-ROM.
CXA2525AM
20 pin SOP (Plastic)
CXA2525AN
20 pin SSOP (Plastic)
Features
• Wide-band RF amplifier. (RF signal fc ≥ 12MHz)
• RF equalizer (T type)
• EFM time constant can be adjusted
(with switching function)
• APC (Automatic Power Control) function
• Power saving function
Functions
• RF summing amplifier
• RF equalizer
• Focus error amplifier
• Tracking error amplifier
• APC circuit
Absolute Maximum Ratings
• Supply voltage
VCC
• Storage temperature Tstg
• Allowable power dissipation
PD
7V
–65 to +150 °C
500 mW
Operating Conditions
• Supply voltage
VCC – GND +3.0 to +5.5 V
• Operating temperature Topr
–20 to +75 °C
Applications
• CD players
• CD-ROM drives
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
–1–
E96318C8Z
1 page Pin
No.
Symbol
I/O
15 LPF_SW O
Equivalent circuit
124
15
124
17
CXA2525AM/AN
Description
Transistor switch output
which sets the LPF cut-off
frequency of RF amplifier.
OFF when Pin 19 is
connected to VCC, ON when
it is connected to GND.
16 BPF_SW O
124
16
VC
18 VCC
124
19 MODE
I
19
50k
50k 30k
Transistor switch output
which sets the RF amplifier
BPF boost.
OFF when Pin 19 is
connected to VCC, ON when
it is connected to GND.
VCC.
Multiple-speed mode
switching input.
VCC : High multiple-speed
mode
GND: Low multiple-speed
mode
20 APC_ON I
20
100k
APC amplifier ON/OFF
switching.
OFF when connecting to VCC;
ON when connecting to GND.
–5–
5 Page CXA2525AM/AN
Tracking Error Amplifier
Each signal current from the photodiodes E and F is I-V converted and input to Pins 8 and 9. These signals
undergo operational amplification at the tracking error amplifier and tracking drive amplifier, and are output to
Pin 12.
11P
VC
5P
E
8I-V
F
9I-V
112k
320k
73.4k
TE
44k 12
VC
44k 112k
The low frequency component of TE output voltage is as follows:
VTE =
112k
44k
×
320k
73.4k
× (F – E)
= 11.1 × (F – E)
Center Voltage Generation Circuit
The center voltage of VR = (VCC + GND) is supplied.
The maximum current is approximately ±3mA.
Vcc
40k
Vc Buffer
25 VR
10
40k
Vcc
VC
APC Circuit
When the laser diode is driven with constant current, the optical output possesses large negative temperature
characteristics. Therefore, the current must be controlled with the monitor photodiode to ensure the output
remains constant. When APC_ON pin is connected to GND, APC is ON; connected to VCC, it is OFF.
PD
2
VCC
56k
10k
55k 56k
100µ
1k LD
1
22
10k 10k
1.25V
10µH
1µ
100
500
– 11 –
11 Page |
Páginas | Total 13 Páginas | |
PDF Descargar | [ Datasheet CXA2525AN.PDF ] |
Número de pieza | Descripción | Fabricantes |
CXA2525AM | RF Amplifier for CD Player and CD-ROM | Sony Corporation |
CXA2525AN | RF Amplifier for CD Player and CD-ROM | Sony Corporation |
Número de pieza | Descripción | Fabricantes |
SLA6805M | High Voltage 3 phase Motor Driver IC. |
Sanken |
SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
Analog Devices |
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |