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DCS1800 - Triple-band VCO for GSM900/DCS1800/PCS1900

Datasheet Summary

Description

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.

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 High output power.
  • +6 dBm in GSM mode.
  • +6 dBm in DCS and PCS mode n Low current consumption.
  • 18 mA in GSM mode.
  • 15 mA in DCS and PCS mode n +2.6 V to +3.0 V supply v.

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Datasheet Details

Part number DCS1800
Manufacturer NSC
File Size 268.74 KB
Description Triple-band VCO for GSM900/DCS1800/PCS1900
Datasheet download datasheet DCS1800 Datasheet
Additional preview pages of the DCS1800 datasheet.

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    LMX2604 Triple-band VCO for GSM900/DCS1800/PCS1900 January 2004 LMX2604 Triple-band VCO for GSM900/DCS1800/PCS1900 General Description 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 for DCS/PCS. The IC has two separate buffer amplifiers to drive an external high power amplifier, one for GSM900 band and the other one for DCS1800/ PCS1900 bands. The IC also has a differential buffer amplifier to drive a mixer for the offset PLL. The resonant circuits of the VCOs are fully integrated in the chip to ease the application of the IC.
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