Wide Band Microwave Frac-Integer-N Integrated Synthesizer

The STuW81300 includes a dual architecture frequency synthesizer (Fractional-N and Integer- N), four low phase noise VCOs with a fast automatic center frequency calibration providing a very wide frequency range, from 1.925 GHz to 16 GHz, with a single device.

The STuW81300 optimizes size and cost of the final application by the integration of low noise LDO voltage regulators and internally matched broadband RF outputs.

Additional features include a crystal oscillator core, external VCO mode, output mute function and low power mode to trade current consumption with phase noise performance and/or output level.

Key Features

  • Output frequency range: 1.925 GHz to 16 GHz
    • RF out 1 (VCO, VCO÷2): 1.925-8.0 GHz
    • RF out 2 (VCO x 2): 7.7-16.0 GHz
  • Very Low Noise
    • Normalized phase noise floor: -227 dBc/Hz
    • VCO phase noise (6.0 GHz): -131 dBc/Hz @ 1 MHz offset
    • Noise floor (6.0 GHz): -158 dBc/Hz
    • Phase noise (12 GHz): -125 dBc/Hz @ 1 MHz offset
    • Noise floor (12 GHz): -154 dBc/Hz
  • Integrated VCOs with fast automatic center frequency calibration
  • External VCO option with 5 V charge pump
  • Fundamental VCO rejection at doubler output higher than 20 dB
  • Internally broadband matched RF outputs delivering +6 dBm @6 GHz and +4 dBm @12 GHz single-ended
  • Integrated low noise LDOs
  • Maximum phase detector frequency: 100 MHz
  • Exact frequency mode
  • Differential reference clock input (LVDS and LVECPL compliant) supporting up to 800 MHz
  • Integrated reference crystal oscillator core
  • R/W SPI interface
  • Logic compatibility/tolerance 1.8 V/3.3 V
  • Supply Voltage: 3.0 V to 5.4 V
  • Small size exposed pad VFQFPN36 package 6x6x1.0 mm
  • Process: BICMOS 0.25 μm SiGe

Circuit Diagram


Technical Documentation

Product Specifications
Description Version Size
DS11314 DS11314: Wideband RF/microwave PLL fractional/integer frequency synthesizer with integrated VCOs and LDOs 5.0 2 MB
User Manuals
Description Version Size
UM2218 UM2218: STuW81300-EVB evaluation board and STSW-RFSOL003 software for STuW81300 1.0 1 MB

Tools and Software

Development Tools
Software Development Tools
Embedded Software
Evaluation Tool Software
Evaluation Tools
Solution Evaluation Tools
Support & Community

Sample & Buy

Part Number Package Packing Type Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
STUW81300TR VFQFPN 36 6x6x1-0 Tape And Reel Active 11 1000 NEC EAR99 PHILIPPINES MORE INFO No availability reported, please contact our Sales office

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STUW81300T ActiveVFQFPN 36 6x6x1-0IndustrialEcopack2 0 0
STUW81300TR ActiveVFQFPN 36 6x6x1-0IndustrialEcopack2 0 0

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.