Product Summary

The LMX1601TM is a Low Cost Dual Frequency Synthesizer. It is designed to be used in a local oscillator subsystem for a radio transceiver. The LMX1601TM is fabricated using National’s 0.5u ABiC V silicon BiCMOS process. It contains two dual modulus prescalers, four programmable counters, two phase detectors and two selectable gain charge pumps necessary to provide the control voltage for two external loop filters and VCO loops. Digital filtered lock detects for both PLLs are included. Data is transferred into the LMX1600/01/02 via a MICROWIRE. Serial interface (Data, Clock, LE). The applications of the LMX1601TM include Cordless/Cellular/PCS phones, other digital mobile phones.

Parametrics

LMX1601TM absolute maximum ratings: (1)Power Supply Voltage VCCAUX: -0.3V to 6.5V; (2)Voltage on any pin with GND=0V VI:-0.3V to VCC+0.3V; (3)Storage Temperature Range TS: -65℃ to +150℃; (4)Lead Temp. (solder 4 sec) TL: +260℃; (5)ESD-Human Body Model: 2000eV.

Features

LMX1601TM features: (1)VCC = 2.7V to 3.6V operation; (2)Low current consumption: 4mA @ 3V (typ) for LMX1601; (3)PLL Power down mode: ICC = 1μA typical; (4)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 (Main) 16/17 (Aux) 16/17; (5)Digital Filtered Lock Detects.

Diagrams

LMX1601TM block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
LMX1601TM/NOPB
LMX1601TM/NOPB

IC FREQ SYNTHESIZER DUAL 16TSSOP
Data Sheet
Negotiable 
LMX1601TMX/NOPB
LMX1601TMX/NOPB

IC FREQ SYNTHESIZER DUAL 16TSSOP
Data Sheet
Negotiable