LMX2531LQ1500E

www.DataSheet4U.com LMX2531LQ1500E High Performance Frequency Synthesizer System with Integrated VCO October 2006 LMX2531LQ1500E High Performance Frequency Synthesizer System with Integrated VCO General Description 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 noise immunity and also more consistent performance. When combined with a high quality reference oscillator, the LMX2531LQ1500E generates very stable, low noise local oscillator signals for up and down conversion in wireless communication devices. The LMX2531LQ1500E is a monolithic integrated circuit, fabricated in an advanced BiCMOS process. There are several different versions of this product in order to accomdate different frequency bands. Device programming is facilitated using a three-wire MICROWIRE Interface that can operate down to 1.8 volts. Supply voltage range is 2.8 to 3.2 Volts. The LMX2531LQ1500E is available in a 36 pin 6x6x0.8 mm Lead-Free Leadless Leadframe Package (LLP). 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 ...