STW81101:Multi-band RF frequency synthesizer with integrated VCOs

The STMicroelectronics STW81101 is an integrated RF synthesizer with voltage controlled oscillators (VCOs). Showing high performance, high integration, low power, and multi-band performances, STW81101 is a low-cost one-chip alternative to discrete PLL and VCO solutions.

The STW81101 includes an integer-N frequency synthesizer and two fully integrated VCOs featuring low phase-noise performance and a noise floor of -155 dBc/Hz. The combination of wide frequency range VCOs (using center-frequency calibration over 32 sub-bands) and multiple output options (direct output, divided by 2, or divided by 4) allows coverage of the 825 MHz-1100 MHz, 1650 MHz-2200 MHz and 3300 MHz-4400 MHz bands.

The STW81101 is designed with STMicroelectronics advanced 0.35 µm SiGe process.

Key Features

  • Digital Lock Detector
  • Programmable charge pump current
  • 3.3V Power Supply
  • Dual Digital Bus Interface: SPI and I2 C bus with 3 bit programmable address (1100A2 A1 A0 )
  • Small size exposed pad VFQFPN28 package 5x5x1.0mm
  • Power down mode (HW and SW)
  • 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:\t\t3300 - 3900 MHz (Direct output)\t\t3800 - 4400 MHz (Direct output)\t\t1650 - 1950 MHz (Internal divider by 2)\t\t1900 - 2200 MHz (Internal divider by 2)\t\t825 - 975 MHz (Internal divider by 4)\t\t950 - 1100 MHz (Internal divider by 4)\t\t
  • Dual modulus programmable prescaler (16/17 or 19/20)
  • Phase frequency comparator and charge pump
  • Fast lock time: 150μs
Product Specifications
DescriptionVersionSize
DS4643: Multi-band RF frequency synthesizer with integrated VCOs4.11 MB
Application Notes
DescriptionVersionSize
AN2452: STW8110x evaluation board and graphical user interface3.21 MB
AN2491: STW8110x hardware component layer API guide1.2148 KB
AN2455: STWPLLSim phase noise and settling time simulator for STW8110x2.21 MB
Flyers
DescriptionVersionSize
Integrated multi-band RF synthesizers1.01 MB
Sample & Buy
Part NumberPackagePacking TypeUnit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
STW81101ATRVFQFPN2 28 5x5x1.0Tape And Reel--NECEAR99PHILIPPINES
STW81101ATVFQFPN2 28 5x5x1.0Tray--NECEAR99PHILIPPINES
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
STW81101ATRVFQFPN2 28 5x5x1.0IndustrialEcopack2 (**)md_5x5_e5xi-wspc-w811fbi_all_p1c7_signed.pdf
md_5x5_e5xi-wspc-w811fbi_all_p1c7.xml
STW81101ATVFQFPN2 28 5x5x1.0IndustrialEcopack2 (**)md_5x5_e5xi-wspc-w811fbi_all_p1c7_signed.pdf
md_5x5_e5xi-wspc-w811fbi_all_p1c7.xml
Multi-band RF frequency synthesizer with integrated VCOs STW81101
circuit_diagram_12138_thumbnail.png STW81101
STW8110x evaluation board and graphical user interface STW81101
STW8110x hardware component layer API guide STW81101
STWPLLSim phase noise and settling time simulator for STW8110x STW81101
STWPLLSim phase noise and settling time simulator for STW8110x STW81101
md_5x5_e5xi-wspc-w811fbi_all_p1c7_signed.pdf STW81101
md_5x5_e5xi-wspc-w811fbi_all_p1c7.xml STW81101