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  • The STMicroelectronics STW81103 is an integrated RF synthesizer with voltage controlled oscillators (VCOs). Showing high performance, high integration, low power, and multi-band performances, STW81103 is a low cost one chip alternative to discrete PLL and VCOs solutions.

    STW81103 includes an Integer-N frequency synthesizer and two fully integrated VCOs featuring low phase noise performance and a noise floor of -155dBc/Hz. The combination of wide frequency range VCOs (thanks to center frequency calibration over 32 sub-bands) and multiple output options (direct output, divided by 2 or divided by 4) allows to cover the 625MHz-762.5MHz, the 1087.5MHz-1525MHz, the 2175MHz-3050MHz and the 4350MHz-5000MHz bands.
    The STW81103 is designed with STMicroelectronics advanced 0.35µm SiGe process.

    Key Features

    • Digital lock detector
    • Programmable charge pump current
    • 3.3V power supply
    • Dual digital bus interface: SPI and I2C bus (fast mode) with 3 bit programmable address (1100A2A1A0)
    • Small size exposed pad VFQFPN28 package 5mm x 5mm x 1.0mm
    • Power down mode (hardware and software)
    • Process: BICMOS 0.35µm SiGe
    • Programmable reference frequency divider (10 bits)
    • 2 programmable counters to achieve a feedback division ratio from 256 to 65551 (prescaler 16/17) and from 361 to 77836 (prescaler 19/20).
    • Integer-N frequency synthesizer
    • Excellent integrated phase noise
    • Dual differential integrated VCOs with automatic center frequency calibration:2500 - 3050 MHz (direct output)4350 - 5000 MHz (direct output)1250 - 1525 MHz (internal divider by 2)2175 - 2500 MHz (internal divider by 2)625 - 762.5 MHz (internal divider by 4)1087.5 - 1250 MHz (internal divider by 4)
    • Dual modulus programmable prescaler (16/17 or 19/20)
    • Phase frequency comparator and charge pump
    • Fast lock time: 150µs

Recommended for you

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS5385
      Multi-band RF frequency synthesizer with integrated VCOs
      3.2
      1.29 MB
      PDF
      DS5385

      Multi-band RF frequency synthesizer with integrated VCOs

    • Description Version Size Action
      AN2452
      STW8110x evaluation board and graphical user interface
      3.2
      1.25 MB
      PDF
      AN2491
      STW8110x hardware component layer API guide
      1.2
      148.6 KB
      PDF
      AN2455
      STWPLLSim phase noise and settling time simulator for STW8110x
      2.2
      1.02 MB
      PDF
      AN2452

      STW8110x evaluation board and graphical user interface

      AN2491

      STW8110x hardware component layer API guide

      AN2455

      STWPLLSim phase noise and settling time simulator for STW8110x

Publications and Collaterals

    • Description Version Size Action
      Integrated multi-band RF synthesizers 1.0
      1.19 MB
      PDF

      Integrated multi-band RF synthesizers

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STW81103AT
Active
VFQFPN2 28 5x5x1.0 Industrial Ecopack2
STW81103ATR
Active
VFQFPN2 28 5x5x1.0 Industrial Ecopack2

STW81103AT

Package:

VFQFPN2 28 5x5x1.0

Material Declaration**:

PDF XML

Marketing Status

Active

Package

VFQFPN2 28 5x5x1.0

Grade

Industrial

RoHS Compliance Grade

Ecopack2

STW81103ATR

Package:

VFQFPN2 28 5x5x1.0

Material Declaration**:

PDF XML

Marketing Status

Active

Package

VFQFPN2 28 5x5x1.0

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.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
STW81103AT No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tray VFQFPN2 28 5x5x1.0 -40 85 PHILIPPINES
STW81103ATR No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tape And Reel VFQFPN2 28 5x5x1.0 -40 85 PHILIPPINES

STW81103AT

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

ECCN (EU)

NEC

Packing Type

Tray

Package

VFQFPN2 28 5x5x1.0

Operating Temperature (°C)

(min)

-40

(max)

85

Budgetary Price (US$)* / Qty

Country of Origin

PHILIPPINES

STW81103ATR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

VFQFPN2 28 5x5x1.0

Operating Temperature (°C)

(min)

-40

(max)

85

Budgetary Price (US$)* / Qty

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