TA2109F

TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA2109F RF Amplifier for Digital Servo CD System TA2109F is a 3-beam type PUH compatible RF Amplifier for Digital Servo to be used in the CD system. In combination with a CMOS single chip processor TC9432AF/TC9462F a CD system can be composed very simply. Features · Built in amplifier for reference (VREF, 2 VREF) supply. · Built in Auto Laser Power Control circuit. · Built in RF amplifier. · Built in focus error amp and tracking error amp. · Built in sub-beam adder signal amplifier. · Capable of tracking balance control with TC9432AF/TC9462F. · Capable of RF gain adjustment circuit with TC9432AF/TC9462F. · Built in signal amplifier for track counter. · Capable of 4 times speed operation. · 24 pin mini flat package. Weight: 0.3 g (typ.) TA2109F 1 2002-08-06 Block Diagram TA2109F LDC SEL SW1 SW2 SW3 L ON OFF OFF HiZ OFF ON ON H OFF ON ON 2 2002-08-06 TA2109F Pin Function Pin No. Symbol 1 VCC 2 FNI 3 FPI 4 TPI 5 TNI 6 MDI 7 LDO 8 SEL 9 TEB 10 2VRO 11 TEN 12 TEO 13 SBAD 14 FEO 15 FEN 16 VRO 17 RFRP 18 RFIS 19 RFGO 20 RFGC 21 AGCI 22 RFO 23 GND 24 RFN I/O Functional Description Remark ― Power supply input terminal ― I Main beam I-V amp input terminal Connected to pin diode A, C I Main beam I-V amp input terminal Connected to pin diode B, D I Sub beam I-V amp input terminal Connected to pin diode F I Sub beam I-V amp input terminal Connected to pin diode E I Monitor ph...