STW81103
Multi-band RF frequency synthesizer with integrated VCOs-
Active
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.
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Datasheet
Key Features
- Integer-N frequency synthesizer
- 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) - Excellent integrated phase noise
- Fast lock time: 150µs
- Dual modulus programmable prescaler (16/17 or 19/20)
- 2 programmable counters to achieve a feedback division ratio from 256 to 65551 (prescaler 16/17) and from 361 to 77836 (prescaler 19/20).
- Programmable reference frequency divider (10 bits)
- Phase frequency comparator and charge pump
- Programmable charge pump current
- Digital lock detector
- Dual digital bus interface: SPI and I2C bus (fast mode) with 3 bit programmable address (1100A2A1A0)
- 3.3V power supply
- Power down mode (hardware and software)
- Small size exposed pad VFQFPN28 package 5mm x 5mm x 1.0mm
- Process: BICMOS 0.35µm SiGe
Circuit Diagram
Design Resources
TopTechnical Documentation
Product Specifications
| Description | Version | Size |
|---|---|---|
DS5385: Multi-band RF frequency synthesizer with integrated VCOs
|
3.2 | 1,319 KB |
Application Notes
| Description | Version | Size |
|---|---|---|
|
AN2452: STW8110x evaluation board and graphical user interface
|
3.2 | 1,276 KB |
|
AN2455: STWPLLSim phase noise and settling time simulator for STW8110x
|
2.2 | 1,040 KB |
|
AN2491: STW8110x hardware component layer API guide
|
1.2 | 149 KB |
Publications and Collaterals
Flyer
| Description | Version | Size |
|---|---|---|
|
Integrated multi-band RF synthesizers
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1,216 KB | |
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Integrated multi-band RF synthesizers
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1.0.0 | 114 KB |
Sample & Buy
Top| Part Number | Marketing Status | Package | Packing Type | Order From ST | Unit Price (US$)* @ | Distributor Availability | RoHS Compliance Grade | Download Material Declaration** |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| STW81103AT | Active | VFQFPN2 28 5x5x1.0 | Tray | - |
| Ecopack1 | - | |||||||||||
| STW81103ATR | Active | VFQFPN2 28 5x5x1.0 | Tape And Reel | - | No data reported, please contact our Distributors | Ecopack1 | - | |||||||||||
(*) 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 (**) 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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