LMX2352TMX/NOPB

Clock Generators, PLLs, Frequency Synthesizers Overview

The LMX2352TMX/NOPB is a PLLatinum Fractional N RF / Integer N IF Dual Low Power Frequency Synthesizer. It features an RF frequency range of 250 MHz to 1.2 GHz and an IF range of 10 MHz to 550 MHz. The device operates on a supply voltage between 2.7 V and 5.5 V, with typical current consumption of 4.75 mA at 3.0 V. It includes dual modulus prescalers (8/9 or 16/17 for RF) and a fully programmable IF circuitry. The RF charge pump output current is adjustable from 100 µA to 1.6 mA in 100 µA steps.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Dual low power synthesizer architecture supporting fractional N RF and integer N IF loops
• Programmable charge pump with selectable current levels for optimized loop filter design
• Integrated digital filtered lock detect function for reliable phase locking status indication
• Flexible reference oscillator input options including external crystal or logic gate drive

Clock Generators, PLLs, Frequency Synthesizers Applications

• Portable wireless communications systems
• Dual mode cellular telephone systems
• Zero blind slot TDMA systems
• Spread spectrum communication systems
• Cable TV Tuners

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix TMX/NOPB against the manufacturer's official documentation to confirm package type and RoHS compliance status. Ensure that the component matches the required surface mount specifications for your assembly process. Cross-reference the datasheet revision number to validate all electrical characteristics and pin configurations before finalizing procurement orders.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a dual-loop synthesizer with low power consumption is required for UHF and VHF applications. Consider the available prescaler ratios and programmable charge pump currents to match your VCO tuning requirements. Verify that the operating temperature range and supply voltage constraints align with your system design parameters.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the LMX2350/LMX2352 family of monolithic integrated frequency synthesizers. These devices are designed for local oscillator subsystems in radio transceivers. They utilize a silicon BiCMOS process and feature modulo 15 or 16 fractional compensation circuitry in the RF divider. The family supports various prescale ratios to accommodate different frequency ranges.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

LMX2350TMX/NOPB serves as a functional alternative within the same family, offering a higher RF frequency range up to 2.5 GHz while maintaining similar IF capabilities and interface compatibility.