LMX2531LQ1500E - National Semiconductor

LMX2531LQ1500E High Performance Frequency Synthesizer System

The LMX2531LQ1500E is a low power, high performance frequency synthesizer system which includes a fully integrated delta-sigma PLL and VCO with fully integrated tank circuit. The third and fourth poles are also integrated and also adjustable. Also included are integrated ultra-low noise and high precision LDOs for the PLL and VCO which give higher supply noi.

Features

PLL Features — Fractional-N Delta Sigma Modulator Order programmable up to 4th order — FastLock/Cycle Slip Reduction with Timeout Counter — Partially integrated, adjustable Loop Filter — Very low phase noise and spurs VCO Features — Integrated tank inductor — Low phase noise — 1499 - 1510 MHz Output Frequency — 749.5 - 755 MHz Output Frequency (Divide by 2 Mode) Other Features — 2.8 V to 3.2 V Operation — Low Power-Down Current — 1.8V MICROWIRE Support — Package: 36 Lead LLP Target Applications n Data Converting Clocking © 2006 National Semiconductor Corporation DS201950 www.national.com .