Low Power RF PLL-Synthesizer Operating From a Single Cell Battery Reference Design
TIDA-00886
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
See the Important Notice and Disclaimer covering reference designs and other TI resources.
Key Document
- Operating a Low-Power, High Performance PLL Single-Cell Battery Design Guide (Rev. A)
(PDF 2306 KB)
07 Oct 2016
Description
The TIDA-00886 consists of the LMX2571, high-performance, wideband PLLatinum™ low-power RF synthesizer, powered by a single cell battery using TPS63050 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.
Features
- 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
See the Important Notice and Disclaimer covering reference designs and other TI resources.
