Fujitsu MB1519
MB1519 is a 600MHz dual serial input PLL (Phase Locked) frequency synthesizer designed for cellular telephone and cordless telephone applications. Copyright ©1994 by FUJITSU LIMIED 1 om The MB1519 has two PLL circuits on a single chip: one for transmit and the other for reception.ABSOLUTE MAXIMUM RATINGS
(see NOTE) PD Rating Symbol Power Supply Voltage Output Voltage Output Current Storage Temperature NOTE: Permanent device damage may occur if the aboveAbsoluteMAXIMUM RATINGS
are exceeded. Functional operation should be restricted to the conditions as detailed in the operational sections of this data sheet. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Separate power supply pins are provided for the transmit and reception PLL circuits. T ransmit PLL contains a low sensitivity charge pump for ease of modulation and reception PLL contains a high sensitivity charge pump for faster lock up time. 8 c T DUAL SERIAL INPUT PLL FREQUENCY SYNTHESIZER WITH 600MHz PRESCALER ria l PLASTIC PACKAGE DIP-20P-M02 MB1519 MB1519 BLOCK DIAGRAM 7 9 10 6 15 14 12 11 8 Charge Pump ria l om Latch Selector 23-bit shift register CNT Schmitt Circuit Schmitt Circuit Schmitt Circuit 18 19 20 13 Charge Pump 1 Phase Detector fp monitor out...