LMX2471 - 3.6 GHz Delta-Sigma Fractional-N PLL

National Semiconductor

Datasheet Details

The LMX2471 is a low power, high performance delta-sigma fractional-N PLL with an auxiliary integer-N PLL..

a typical current consumption of 5.6 mA at 2.5 V. The LMX2471 is available in a 24 lead 3.5 X 4.5 X 0.6 mm package. Features n n n n Low in-band phase noise and low fractional spurs 12 bit or 22 bit selectable fractional modulus Up to 4th order programmable delta-sigma modulator Enhanced Anti-Cycle Slip Fastlock Circuitry Fastlock Cycle slip reduction Integrated timeout counters Digital lock detect output Prescalers allow wide range of N values RF PLL: 16/17/20/21 IF PLL: 8/9 or 16/17 Crystal R.

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