Wide Band Frac-Integer-N Integrated Synthesizer

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  • The STW81200 is a dual architecture frequency synthesizer (Fractional-N and Integer-N), that features three low phase-noise VCOs with a fundamental frequency range of 3.0 GHz to 6.0 GHz and a programmable dual RF output divider stage which allows coverage from 46.875 MHz to 6 GHz.

    The STW81200 optimizes size and cost of the final application thanks to the integration of low- noise LDO voltage regulators and internally-matched broadband RF outputs.
    The STW81200 is compatible with a wide range of supply voltages (from 3.0 V to 5.4 V) providing to the end user a very high level of flexibility which trades off excellent performance with power dissipation requirements. A low-power functional mode (software controlled) gives an extra power saving.
    Additional features include crystal oscillator core, external VCO mode and output-mute function.

    Key Features

    • Output frequency range: 46.875 to 6000 MHz
    • Very low noise
      • Normalized in band phase noise floor: -227 dBc/Hz
      • VCO phase noise: -135 dBc/Hz @ 1 MHz offset, 4.0 GHz carrier
      • Noise floor: -160 dBc/Hz
    • Dual architecture frequency synthesizer: Fractional-N and Integer-N
    • Integrated VCOs with automatic center frequency calibration
    • Programmable RF output dividers by 1/2/4/8/16/32/64
    • Dual RF Output broadband matched with programmable power level and mute function
    • External VCO option with 5 V charge pump
    • Integrated low noise LDO voltage regulators
    • Maximum phase detector frequency: 100 MHz
    • Exact frequency mode
    • Fast lock and cycle slip reduction
    • Differential reference clock input (LVDS and LVECPL compliant) supporting up to 800 MHz
    • 13-bit programmable reference frequency divider
    • Programmable charge pump current
    • Digital lock detector
    • Integrated reference crystal oscillator core
    • R/W SPI interface
    • Logic compatibility/tolerance 1.8 V/3.3 V
    • Low power functional mode
    • Supply voltage: 3.0 V to 5.4 V
    • Small size exposed pad VFQFPN36 package 6 x 6 x 1.0 mm
    • Process: BICMOS 0.25 μm SiGe

Circuit Diagram

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Part Number
Package
Packing Type
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
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STW81200T VFQFPN 36 6x6x1-0 Tray
Active
- - EAR99 PHILIPPINES Check Availability

Distributor availability ofSTW81200T

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2880 1 Order Now
ARROW AMERICA 2769 1 Order Now

Distributor reported inventory date: 2019-11-21

Distributor Name

DIGIKEY

Stock

2880

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

2769

Min.Order

1

Region

AMERICA Order Now

Distributor reported inventory date: 2019-11-21

STW81200TR VFQFPN 36 6x6x1-0 Tape And Reel
Active
- EAR99 PHILIPPINES Check Availability

Distributor availability ofSTW81200TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2067 1 Order Now
ARROW EUROPE 2882 0 Order Now
MOUSER WORLDWIDE 1911 1 Order Now
ANGLIA Live EUROPE 12 3000 Order Now

Distributor reported inventory date: 2019-11-21

Distributor Name

DIGIKEY

Stock

2067

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

2882

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

1911

Min.Order

1

Region

WORLDWIDE Order Now

ANGLIA Live

Stock

12

Min.Order

3000

Region

EUROPE Order Now

Distributor reported inventory date: 2019-11-21

Buy now

STW81200T

Package

VFQFPN 36 6x6x1-0

Packing Type

Tray

Unit Price (US$)

*

Distributor availability ofSTW81200T

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2880 1 Order Now
ARROW AMERICA 2769 1 Order Now

Distributor reported inventory date: 2019-11-21

Distributor Name

DIGIKEY

Stock

2880

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

2769

Min.Order

1

Region

AMERICA Order Now

Distributor reported inventory date: 2019-11-21

Marketing Status

Active

Unit Price (US$)

-

Quantity

-

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

STW81200TR

Package

VFQFPN 36 6x6x1-0

Packing Type

Tape And Reel

Unit Price (US$)

*

Distributor availability ofSTW81200TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2067 1 Order Now
ARROW EUROPE 2882 0 Order Now
MOUSER WORLDWIDE 1911 1 Order Now
ANGLIA Live EUROPE 12 3000 Order Now

Distributor reported inventory date: 2019-11-21

Distributor Name

DIGIKEY

Stock

2067

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

2882

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

1911

Min.Order

1

Region

WORLDWIDE Order Now

ANGLIA Live

Stock

12

Min.Order

3000

Region

EUROPE Order Now

Distributor reported inventory date: 2019-11-21

Marketing Status

Active

Unit Price (US$)

-

Quantity

-

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

(*) 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

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Embedded Software

    • Part Number

      GUI for STW81200 evaluation board

Evaluation Tools

    • Part Number

      Evaluation Kit of STW81200

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS10185
      Wideband RF PLL fractional/integer frequency synthesizer with integrated VCOs and LDOs
      8.0
      2.75 MB
      PDF
      DS10185

      Wideband RF PLL fractional/integer frequency synthesizer with integrated VCOs and LDOs

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STW81200T
Active
VFQFPN 36 6x6x1-0 Industrial Ecopack2
STW81200TR
Active
VFQFPN 36 6x6x1-0 Industrial Ecopack2

STW81200T

Package:

VFQFPN 36 6x6x1-0

Material Declaration**:

PDF XML

Marketing Status

Active

Package

VFQFPN 36 6x6x1-0

Grade

Industrial

RoHS Compliance Grade

Ecopack2

STW81200TR

Package:

VFQFPN 36 6x6x1-0

Material Declaration**:

PDF XML

Marketing Status

Active

Package

VFQFPN 36 6x6x1-0

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) 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.

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