Datasheet Texas Instruments LMX2487 — 数据表

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SNAS322C – FEBRUARY 2006 – REVISED JANUARY 2016 LMX2487 1-GHz to 6-GHz High Performance Delta-Sigma Low-Power Dual PLLatinum™
Frequency Synthesizers With 3-GHz Integer PLL
1 Features 3 Description The LMX2487 device is a low power, high
performance delta-sigma fractional-N PLL with an
auxiliary integer-N PLL. It is fabricated using TI’s
advanced process. 1 Quadruple Modulus Prescaler for Lower Divides
– RF PLL: 16/17/20/21 or 32/33/36/37
– IF PLL: 8/9 or 16/17
Advanced Delta Sigma Fractional Compensation
– 12-Bit or 22-Bit Selectable Fractional Modulus
– Up to 4th Order Programmable Delta-Sigma
Modulator
Improved Lock Times
– Fastlock / Cycle Slip Reduction With SingleWord Write to Change Frequencies
– Integrated Time-Out Counter
Wide Operating Range
– LMX2487 RF PLL: 1.0 GHz to 6.0 GHz …