TA2157F Digital Servo Head Amp

TA2157F Digital Servo Head Amp

3.3 V power supply pin Internal Circuit ¾ 22 kW 2 3 3 FPI I Main-beam amp input pin 1 kW 120 mA 2 FNI I Main-beam amp input pin VC 4 TPI I Sub-beam amp input pin 4 5 2 mA 100 W VC 2 mA 5 TNI I Sub-beam amp input pin 20 mA 2 mA 4 mA 6 MDI I Monitor photo diode amp input pin 6 .

Features

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· Low power dissipation digital servo head amp Built-in amplifier for generating reference voltage (VRO) Built-in auto laser power control (APC) amplifier Built-in RF amplifier Built-in RF signal automatic gain control (AGC) amplifier Built-in gain change circuit for CD-RW Built-in focus error and tracking error signal amplifiers Built-in track count signal amplifier Normal-, double-, and ×4-speed operation 24-pin mini flat package Weight SSOP24-P-300-1.00: 0.3 g (typ.) SSOP24-P-300-0.65A: 0.17 g (typ.) TA2157FN 1 2002-11-21 TA2157F/FN Block Diagram GVSW 13 PEAK 20 kW 20.