SX1781 Overview
The SX1781 is a high-performance low phase noise integer-N frequency synthesizer for wireless munications applications. The circuit embeds a fully integrated PLL (including VCO tank and loop filter), plementary output buffers The divider and power-down settings are programmable via an SPI interface. A Lock Detector pin linked to a squelch function have been designed to ease the software development.
SX1781 Key Features
- 3.6V Programmable Output Power: up to +5 dBm Integrated VCO and loop filter SPI-bus interface Lock Detect output and squ