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LMX2471 Datasheet 3.6 Ghz Delta-sigma Fractional-n Pll

Manufacturer: National Semiconductor (now Texas Instruments)

Overview: LMX2471 3.6 GHz Delta-Sigma Fractional-N PLL with 1.7 GHz Integer-N PLL November 2003 LMX2471 3.6 GHz Delta-Sigma Fractional-N PLL with 1.

General Description

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

The device is fabricated using National Semiconductor’s advanced BiCMOS process.

With delta-sigma architecture, fractional spur pensation is achieved with noise shaping capability of the delta-sigma modulator and the inherent low pass filtering of the PLL loop filter.

Key Features

  • 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.

More Datasheets from National Semiconductor (now Texas Instruments)

Part Number Description
LMX2470 2.6 GHz Delta-Sigma Fractional-N PLL
LMX2411 Baseband Processor
LMX2430 Dual High Frequency Synthesizer
LMX2433 Dual High Frequency Synthesizer
LMX2434 Dual High Frequency Synthesizer
LMX2485 High Performance Delta-Sigma Low Power Dual PLLatinum Frequency Synthesizers
LMX2485E High Performance Delta-Sigma Low Power Dual PLLatinum Frequency Synthesizers
LMX2486 High Performance Delta-Sigma Low Power Dual PLLatinum Frequency Synthesizers
LMX2487 High Performance Delta-Sigma Low Power Dual PLLatinum Frequency Synthesizers
LMX2487E High Performance Delta-Sigma Low Power Dual PLLatinum Frequency Synthesizers

LMX2471 Distributor