CXA2550N

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 voltageconverted 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 V Supply voltage VCC 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 19 LD_ON 15 RF O 14 RFM 13 FE 12 FE_BIAS 17 RFTC 16 RF I 20 VCC VCC 174k 11 TE 30k 30k 30k VC 10 49 96k VC 15k VEE TRACKING ERROR VC AMP VC VCC 15k 6k 54k 13.4k 50µA 670mV VEE 154k FOCUS ERROR AMP 87k 32k 13k 32k 24p VC 260k 8 E VC VC VC 7 26k 12p 12p 13k F 24p 56k APC LD AMP 56k 10k VC 2k 10k 10k 1k VCC 55k VEE VREF 1.25V VC 2k APC PD AMP 8k 6p 2k 8k 6p 10k 10k VEE 10k VC VC 2 5 VC VEE VC VC 260k 2k 25k 1 4 3 6 PD1 Sony reserves the right to change products and specifications without prior notice. This ...