CXA2550M/N
RF Amplifier for CD Players
Description
The CXA2550M/N is an IC developed for compact
disc players. This IC incorporates an RF amplifier,
focus error amplifier, tracking error amplifier, APC
circuit and RF level control circuit. (The voltage-
converted optical pickup output is supported.)
Features
•
Low power consumption (35mW at 3.5V)
•
APC circuit
•
RF level control circuit
•
Both single power supply and dual power supply
operations possible.
Structure
Bipolar silicon monolithic IC
Applications
Compact disc players
Block Diagram and Pin Configuration
(Top View)
18 AGCCONT
(50%/30%/OFF)
CXA2550M
20 pin SOP (Plastic)
CXA2550N
20 pin SSOP (Plastic)
Absolute Maximum Ratings
(Ta = 25°C)
12
•
Supply voltage
V
CC
•
Operating temperature Topr
–20 to +75
•
Storage temperature
Tstg
•
Allowable power dissipation
–65 to +150
V
°C
°C
mW
mW
P
D
(SOP)
620
(SSOP) 370
Operating Conditions
Supply voltage
V
CC
– V
EE
3.0 to 4.0
V
19 LD_ON
15 RF O
14 RFM
13 FE
12 FE_BIAS
17 RFTC
16 RF I
20 V
CC
V
CC
174k
11 TE
30k
30k
30k
VC 10
49
96k
VC
15k
V
EE
TRACKING
ERROR
VC AMP
VC
V
CC
15k
6k
54k
13.4k
50µA
670mV
V
EE
154k
FOCUS
ERROR
AMP
87k
32k
13k
32k
24p
VC
260k
8
E
VC
VC
VC
F
7
26k
12p
12p
13k
24p
56k APC LD
AMP
56k
10k
VC
2k
10k
10k
1k
V
CC
55k
V
EE
VREF 1.25V
VC
2k
APC PD AMP
8k 6p
2k
8k 6p
10k
10k
V
EE
10k
VC VC
2
5
VC
V
EE
VC
VC
260k
2k
25k
1
4
3
6
PD1
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.
AGCVTH
PD2
–1–
V
EE
LD
PD
EI
9
V
CC
30k
95k
E97514B25
SONY [ SONY CORPORATION ]
