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
Absolute Maximum Ratings (Ta = 25°C)
• Supply voltage VCC 12 V
• Operating temperature Topr –20 to +75 °C
• Storage temperature Tstg –65 to +150 °C
• Allowable power dissipation
PD (SOP) 620 mW
(SSOP) 370 mW
Operating Conditions
Supply voltage VCC – VEE 3.0 to 4.0 V
– 1 –
CXA2550M/N
E97514B25
RF Amplifier for CD Players
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.
CXA2550M
20 pin SOP (Plastic)
CXA2550N
20 pin SSOP (Plastic)
10
151720
VC
VC
10k
8k
6p
VC
VC
10k
8k
6p
4 5
2k
2k
VC
13.4k
V
CC
50µ
A
10k
56k
10k
V
EE
10k
55k
10k56k1k
V
CC
V
EE
APC LD AMP
APC PD AMP
VREF 1.25V
V
CC
19 18
15k
VC
54k
V
EE
6k
16
VC
2k 2k
VC
13k
12p
V
EE
VC
25k
260k 260k
26k
13k
12p
VC
VC
6 7 9
32k 32k
24p
174k
1314
24p
87k
154k
FOCUS ERROR AMP
30k 30k
96k
1112
TRACKING ERROR AMP
15k
49
VC
V
CC
30k 30k
V
EE
2 31
AGCVTH
LD PD
PD1 PD2
V
EE
F E
EI
VC
V
CC
LD_ON AGCCONT (50%/30%/OFF) RFTC RF I RF O RFM FE FE_BIAS TE
8
95k
VC
VC
670mV
Block Diagram and Pin Configuration (Top View)