SX1781 Datasheet (Semtech) - PLL Frequency Synthesizer

SX1781, PLL Frequency Synthesizer

The SX1781 is a high-performance low phase noise integer-N frequency synthesizer for wireless communications applications.

The circuit embeds a fully integrated PLL (including VCO tank and loop filter), complementary output buffers The divider and power-down settings are programmable via an SPI inte

SX1781 Features

* Frequency range:1200 to 1400 MHz Frequency step: 250 kHz min. Phase noise: -85 dBc/Hz @ 10 kHz offset Reference spurs: -67 dBc Hopping time: 350 µs max. Operating voltage: 3.0 - 3.6V Programmable Output Power: up to +5 dBm Integrated VCO and loop filter SPI-bus interface Lock Detect output and squel