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Применения > > Low Power RF PLL-Synthesizer Operating From a Single Cell Battery Reference Design

Low Power RF PLL-Synthesizer Operating From a Single Cell Battery Reference Design (TIDA-00886)

The TIDA-00886 consists of the LMX2571, high-performance, wideband PLLatinum™ low-power RF synthesizer, powered by a single cell battery usingTPS63050 a DC-DC buck-boost converter. The TIDA-00886 shows that the DC-DC buck-boost converter has a small to negligible effect on the phase noise performance of the LMX2571. The LMX2571 is very popular in 2-way radio applications as well as handheld test and measurement equipment. Although this is a low current consumption device, 39-mA in Synthesizer mode (Internal VCO) and 9mA in PLL mode (External VCO), efficiency is critical for battery operated applications.

Возможности

3.3 Vdc output from the buck-boost to power LMX2571 from a battery 2.5V to 5.5V input voltage range Any frequency from 10MHz to 1344MHz Efficiency >90% in boost mode and >95 % in Buck Mode

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Low Power RF PLL-Synthesizer Operating From a Single Cell Battery Reference Design TIDA-00886

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