Product overview
Description
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.
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All 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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STMicroelectronics - STW81200
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| STW81200T | Active | VFQFPN 36 6x6x1.0 mm | Industrial | Ecopack2 | |
| STW81200TR | Active | VFQFPN 36 6x6x1.0 mm | Industrial | 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 | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| STW81200T | | | distributors No availability of distributors reported, please contact our sales office | ||||||||||
| STW81200TR | | | distributors No availability of distributors reported, please contact our sales office |
STW81200T Active
STW81200TR Active
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors