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LMX1601SLB bảng dữ liệu(PDF) 1 Page - National Semiconductor (TI) |
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1 / 14 page LMX1600/LMX1601/LMX1602 PLLatinum™ Low Cost Dual Frequency Synthesizer LMX1600 2.0 GHz/500 MHz LMX1601 1.1 GHz/500 MHz LMX1602 1.1 GHz/1.1 GHz General Description The LMX1600/01/02 is part of a family of monolithic inte- grated dual frequency synthesizers designed to be used in a local oscillator subsystem for a radio transceiver. It is fabri- cated using National’s 0.5u ABiC V silicon BiCMOS process. The LMX1600/01/02 contains two dual modulus prescalers, four programmable counters, two phase detectors and two selectable gain charge pumps necessary to provide the con- trol voltage for two external loop filters and VCO loops. Digi- tal filtered lock detects for both PLLs are included. Data is transferred into the LMX1600/01/02 via a MICROWIRE™ serial interface (Data, Clock, LE). V CC supply voltage can range from 2.7V to 3.6V. The LMX1600/01/02 features very low current consumption - typically 4.0 mA at 3V for LMX1601, 5.0 mA at 3V for LMX1600 or LMX1602. Powerdown for the PLL is hardware controlled. The LMX1600/01/02 is available in a 16 pin TSSOP surface mount plastic package. Features n V CC = 2.7V to 3.6V operation n Low current consumption: 4mA @ 3V (typ) for LMX1601 5mA @ 3V (typ) for LMX1600 or LMX1602 n PLL Powerdown mode: I CC = 1 µA typical n Dual modulus prescaler: — 2 GHz/500 MHz option: (Main) 32/33 (Aux) 8/9 — 1.1 GHz/500 MHz option: (Main) 16/17 (Aux) 8/9 — 1.1 GHz/1.1 GHz option: (Main) 16/17 (Aux) 16/17 n Digital Filtered Lock Detects Applications n Cordless / Cellular / PCS phones n Other digital mobile phones Functional Block Diagram TRI-STATE® is a registered trademark of National Semiconductor Corporation. MICROWIRE™ and PLLatinum™ are trademarks of National Semiconductor Corporation. DS100129-1 PRELIMINARY March 1998 © 1998 National Semiconductor Corporation DS100129 www.national.com |
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