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PDF CXA2556 Data sheet ( Hoja de datos )
| Número de pieza | CXA2556 | |
| Descripción | RF Amplifier for CD Player/CD-ROM | |
| Fabricantes | Sony Corporation | |
| Logotipo |  |
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CXA2556Q
RF Amplifier for CD Player/CD-ROM
For the availability of this product, please contact the sales office.
Description
The CXA2556Q is an IC for RF signal processing of
32 pin QFP (Plastic)
CD player and CD-ROM.
Features
• Wide-band RF AC amplifier
(RF AC signal fc ≥ 20MHz)
• 4-mode RF equalizer (active filter type)
• RF equalizer boost amount and cut-off frequency
adjustable
• EFM time constant adjustable (switching function
provided)
• Peak hold time constant of mirror circuit adjustable
• Tracking error amplifier cut-off frequency adjustable
• Tracking error amplifier voltage gain adjustable
• APC (Automatic Power Control) function
• APC ON/OFF control
Absolute Maximum Ratings
• Supply voltage
VCC
• Storage temperature Tstg
• Power consumption PD
7
–65 to +150
800
V
°C
mW
Applications
• CD players
• CD-ROM drives
Functions
• RF summing amplifier
• RF equalizer
• Focus error amplifier
• Tracking error amplifier
• Mirror detection function
• APC circuit
Operating Conditions
• Supply voltage
VCC – GND 3.0 to 5.5 V
• Operating temperature Topr
–20 to +75 °C
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–
E96731B76
1 page  
Pin
No.
Symbol
I/O
20 VCC
21 RFO 2
22 RFO 1
O
O
23 MODE 2 I
24 MODE 1 I
25 APC ON I
CXA2556Q
Equivalent circuit
3k
147
21
147
22
Description
Power supply.
Buffer switch output for the RF
time constant setting for Pin 21.
ON when Pins 23 and 24 are
connected to GND.
RF equalizer output.
147 10k
23
40k
147 10k 40k
24
147
25
100k
Double-speed mode switching
input.
×1
×N
× 1.5N
× 2.0N
Mode 1
GND
VCC
GND
VCC
Mode 2
GND
GND
VCC
VCC
N is varied according to the
external resistor connected to
Pin 26.
Switching pin for APC amplifier
ON/OFF.
OFF when connected to Vcc;
ON when connected to GND.
26 FC C
I
5k
5k 5k
147
26
Input to set the RF equalizer
LPF cut-off frequency.
–5–
5 Page 
CXA2556Q
– 11 –
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet CXA2556.PDF ] | |
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