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The STW81101ATR is a highly integrated multi-band RF frequency synthesizer featuring Voltage-Controlled Oscillators (VCOs), engineered by STMicroelectronics. Developed using an advanced 0.35µm SiGe BiCMOS process, this Integer-N synthesizer delivers outstanding integrated phase noise performance and a rapid lock time of just 150µs. It incorporates dual differential integrated VCOs with automatic center-frequency calibration. Through its direct output and programmable internal dividers (divide-by-2 and divide-by-4), the device provides comprehensive wideband coverage ranging from 825 MHz to 4400 MHz. Fully configurable via a dual digital bus interface (SPI and I²C), the STW81101ATR serves as a robust, low-cost monolithic alternative to discrete PLL and VCO solutions for wireless infrastructure, cellular base stations, and microwave links. The "TR" suffix denotes Tape and Reel packaging for automated SMT assembly.
| Parameter | Specification |
|---|---|
| Manufacturer | STMicroelectronics (ST) |
| Exact Part Number | STW81101ATR |
| Component Type | Integer-N RF Frequency Synthesizer with VCOs |
| Frequency Coverage | 825 MHz to 4.4 GHz (Multiple Sub-Bands) |
| Lock Time | 150 µs (Typical) |
| Control Interface | SPI and I²C Bus |
| Operating Supply Voltage | 3.3V |
| Package / Case | 28-VFQFPN (5mm x 5mm, Exposed Pad) |
| Packaging Delivery | Tape and Reel (TR) |
AICCHIP specializes in the global wholesale distribution of verifiable, factory-original electronic components, including critical timing and RF ICs like the STW81101ATR. We operate strictly on a B2B inquiry basis, ensuring highly competitive volume pricing for telecommunications and industrial networking manufacturers. All inventory is meticulously inspected and dispatched directly from our primary transit hubs in Shenzhen and Hong Kong. To support our global clientele, particularly in Europe and Russia, we provide specialized DDP/DDU freight routing, managing all customs formalities to ensure seamless and predictable delivery schedules. For real-time stock allocation, Date Code (D/C) verification, and volume RFQs, please connect with our sales engineering team directly via WhatsApp.
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