MB1509 Datasheet (Fujitsu) - DUAL SERIAL INPUT PLL FREQUENCY SYNTHESIZER

MB1509, DUAL SERIAL INPUT PLL FREQUENCY SYNTHESIZER

TRANSMIT/RECEPTION BLOCK * 20-bit latch * Programmable divider consisting of: Binary 7-bit swallow counter (Divide ratio: 0 to 127) Binary 11-bit programmable counter (Divide ratio: 16 to 2047) * Phase detector with phase polarity change function * 400MHz dual modulu

Sept.

1995 Edition 3.0a DATA SHEET MB1509 DUAL SERIAL INPUT PLL FREQUENCY SYNTHESIZER DUAL SERIAL INPUT PLL FREQUENCY SYNTHESIZER WITH 400MHz PRESCALER The Fujitsu MB1509 is a 400MHz dual serial input PLL (Phase Locked) frequency synthesizer designed for cordless telephone application.

The MB1509 has two PLL circuits on a single chip: one for transmit and the other for reception.

Separate power supply pins are provided for the transmit and reception PLL circuits.

Transmit PLL contains a low se