LMX2604 Datasheet - National Semiconductor

LMX2604 Triple-band VCO

The LMX2604 is a fully integrated VCO (Voltage-Controlled Oscillator) IC designed for GSM900/DCS1800/PCS1900 triple-band application. The IC is ideal for use in the transmitter modulation loop by providing extremely small form factor and low phase noise. The IC has two VCOs, one for GSM and a second.

LMX2604 Features

* n On-chip Triple-band RF VCOs GSM: 880 MHz to 915 MHz DCS: 1710 MHz to 1785 MHz PCS: 1850 MHz to 1910 MHz n On-chip tank circuit n Low phase noise

* -167 dBc/Hz @ 20 MHz offset in GSM band

* -163 dBc/Hz @ 20 MHz offset in DCS band

* -162 dBc/Hz @ 20 MHz offset in PCS band n H

LMX2604_NationalSemiconductor.pdf