SX1781
DESCRIPTION
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.
PIN DIAGRAM
FEATURES
Frequency range:1200 to 1400 MHz Frequency step: 250 k Hz min. Phase noise: -85 d Bc/Hz @ 10 k Hz offset Reference spurs: -67 d Bc Hopping time: 350 µs max. Operating voltage: 3.0
- 3.6V Programmable Output Power: up to +5 d Bm Integrated VCO and loop filter SPI-bus interface Lock Detect output and squelch Ultra-low power sleep mode plementary RF outputs Temperature range: -40 to +85°C 4 x 4 mm MLPQ16 package Pb-free and Ro HS...
