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Sony Semiconductor Electronic Components Datasheet

CXA2557R Datasheet

RF Amplifier for CD Player/CD-ROM

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CXA2557R pdf
CXA2557R
RF Amplifier for CD Player/CD-ROM
For the availability of this product, please contact the sales office.
Description
The CXA2557R is an RF signal processing IC for
48 pin LQFP (Plastic)
CD players, CD-ROM and CD-RW (playback).
Features
Wide-band RF AC amplifier
Supports CD-RW playback (RF DC, RF AC, FE,
TE and AL amplifiers)
5-mode RF AC equalizer (active filter type)
RF AC equalizer boost amount and cut-off frequency
adjustable
Voltage gain adjustable for RF DC, RF AC, FE, TE
and AL amplifier
RF DC amplifier offset voltage switchable
FE and TE amplifier bias voltage adjustable
Tracking error amplifier cut-off frequency adjustable
Alignment amplifier
Center error amplifier
AGC (Automatic Gain Control) function
APC (Automatic Power Control) function
VC/VC IN separation
Supports laser coupler/3 spots
Structure
Bipolar silicon monolithic IC
Absolute Maximum Ratings (Ta = 25°C)
Supply voltage
VCC – GND 7
V
Storage temperature Tstg
–65 to +150 °C
Power consumption PD
400 mW
Operating Conditions (Ta = 25°C)
Supply voltage
VCC – GND 3.5 to 5.5 V
Operating temperature Topr
–20 to +75 °C
Functions
RF DC summing amplifier
RF AC summing amplifier
RF AC equalizer
Focus error (FE) amplifier
Tracking error (TE) amplifier
Alignment (AL) amplifier
Center error (CE) amplifier
Mirror circuit
AGC circuit
VREF output
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–
E97757-PS


Sony Semiconductor Electronic Components Datasheet

CXA2557R Datasheet

RF Amplifier for CD Player/CD-ROM

No Preview Available !

CXA2557R pdf
CXA2557R
Block Diagram
A3
B4
C5
D6
RW SW DC
RF DC
SUM AMP
RF DC AMP
RF AC SUM AMP
APC ON
DC OFFSET
RF DC VCA
VCA CNT
RF SW DC
RW SW AC
RW SW 1
32 RW SW
RW SW DC RW SW AC
RW SW 1
26 RF DC OUT
RF DC OUT
48 RF AC OUT
RW SW AC
RF AC VCA VCA CNT
E8
F9
TE 1 10
AL IN 11
FE AMP
RW SW 1
TE AMP
TE MODE
FE VCA
FE VCA
CNT
TE RW AMP
RW SW 1
AL AMP
RW SW 1
AL VCA
FE BIAS
TE VCA
TE VCA
CNT
AL DRV
RF DC OUT
TE BIAS
CE AMP
CE DRV
20 FE
19 FE BIAS
38 FE CNT
17 TE
18 TE BIAS
39 TE CNT
40 AL CNT
12 AL
13 AL 1
14 CE IN
15 CE 1
16 CE
MIRR CNT 37
PBH CNT 21
EQ IN 47
FC CNT 1 44
FC CNT 2 45
FC H CNT 43
MODE 1 34
MODE 2 35
BST CNT 42
LPF 1 LPF 2 LPF 3
AMP
MIRR CNT
LPF
PEAK
HOLD
HALF
ADJ
COMP
25 MIRR
24 MIRR BIAS
23 PH C
PBH CNT
HPF
PEAK
HOLD 1
AMP
BOTTOM
HOLD
PEAK
HOLD 2
COMP
VCA CNT
FC CNT
MODE CNT
LPF 1 DELAY
HPF BOOST
MODE 1
MIXER LPF 2 LPF 3 LPF 4 AMP
APC AMP
22 BH C
33 AGC SW
41 VCA
46 HOLD C
29 RFO 1
30 RFO 2
2 PD
1 LD
BOOST
CNT
APC ON
36 APC ON
7 27 28
31
–2–


Part Number CXA2557R
Description RF Amplifier for CD Player/CD-ROM
Maker Sony Corporation
Total Page 30 Pages
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CXA2557R pdf
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