STW81101ATR - Multi-Band RF Frequency Synthesizer | STMicroelectronics
Артикул: STW81101ATR ✓ АктивенSTW81101ATR Обзор
A frequency synthesizer is a clock-and-timing IC that generates a stable, programmable output frequency by locking a voltage-controlled oscillator to a reference signal. The STW81101ATR belongs to the PLL, clock-generator, and RF-synthesizer hierarchy. Integrating the VCOs with the synthesizer reduces board area compared with a discrete oscillator and separate phase-locked-loop arrangement while retaining programmable RF output generation.
The verified product information identifies integer-N operation and two differential integrated VCOs with automatic center-frequency calibration. Direct and internally divided output arrangements are indicated in the available documentation, although the complete frequency ranges are not exposed in the supplied excerpts. The 10 MHz to 200 MHz input range provides a reference interface suitable for RF systems that derive a stable carrier from an external reference or frequency multiplier.
The STW81101ATR is specified for a 3 V to 3.6 V supply and an operating temperature range of -40°C to +85°C. These values make it appropriate for compact industrial and commercial RF equipment where a low-voltage control domain, moderate temperature range, and surface-mount construction are required. Its integrated synthesizer architecture is intended to simplify RF signal generation compared with a discrete VCO, divider, charge-pump, and loop-filter implementation.
Typical uses include wireless infrastructure, RF test equipment, frequency-generation modules, and communication receivers that require a phase-locked RF carrier. In these systems, the device can generate a calibrated carrier that is subsequently mixed, modulated, or divided. Integration is especially useful where PCB area is constrained and repeatable center-frequency calibration is more valuable than the flexibility of a fully discrete oscillator network.
Designers should provide a clean reference signal and follow the manufacturer layout guidance for the differential VCO and synthesizer interfaces. Decoupling and high-frequency routing are critical because supply noise or trace coupling can degrade phase-noise and spur performance. The exact recommended capacitor values, loop-filter constants, output-frequency ranges, and RF output power must be taken from the complete manufacturer datasheet.
This page consolidates the verified package, interface, supply, temperature, sourcing, and cross-reference information into an engineering-focused selection guide. It also distinguishes a documented same-package option from unsupported cross-package suggestions, helping designers avoid treating functionally related RF ICs as true drop-in replacements.
Аналоги без доработки для STW81101ATR — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
STW81101AT
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
STW81101ATR Характеристики
| Device Type | Multi-band RF frequency synthesizer with integrated VCOs |
| Synthesis Architecture | Integer-N frequency synthesizer |
| VCO Configuration | Dual differential integrated VCOs |
| VCO Calibration | Automatic center-frequency calibration |
| Input Frequency Range | 10 MHz to 200 MHz |
| Supply Voltage Range | 3 V to 3.6 V |
| Диапазон рабочих температур | -40°C to +85°C |
| Корпус | 28-pin VFQFPN |
| Terminal Pitch | 0.5 mm |
| Package Height | 1.0 mm |
| Тип монтажа | Surface Mount |
| Shipping Format | Tape and Reel |
| Количество выводов | 28 pins |
Руководство по цоколевке STW81101ATR в корпусе 1.0 mm
Цоколевка для STW81101ATR (корпус 1.0 mm). Нумерация выводов, функции и схемы подключения определены в техническом описании производителя. Обратитесь к нему для точного посадочного места и рекомендаций по пайке.
Нет подробных данных о распиновке для STW81101ATR.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
STW81101ATR подходит для 6 применениеs: Wireless Infrastructure RF Carrier Generation, RF Test and Measurement Equipment, Multi-Band RF Signal Generators, RF Communication Receivers, Industrial RF Control Modules, Frequency-Dependent Communications Modules.
Wireless Infrastructure RF Carrier Generation
The STW81101ATR fits compact wireless-infrastructure RF chains that require a programmable, phase-locked carrier rather than a fixed-frequency source. Its integer-N architecture and dual differential integrated VCOs provide a compact way to synthesize RF outputs, while automatic center-frequency calibration helps compensate for VCO variation. The 3 V to 3.6 V operating range and 28-pin VFQFPN package support dense RF hardware, but the design must still satisfy the required output band, phase-noise, spur, and output-power limits. A clean 10 MHz to 200 MHz reference environment and controlled impedance routing are essential for reliable synthesizer performance.
Рекомендуется
RF Test and Measurement Equipment
The STW81101ATR can serve as the programmable RF source in compact test equipment when the required carrier frequency, phase noise, and spurious emissions fall within the device's verified operating capabilities. Its dual differential integrated VCOs and automatic center-frequency calibration are useful where repeatable tuning is needed across multiple instrument channels or production-test fixtures. The 10 MHz to 200 MHz input range allows reference generation from a common laboratory reference. Because the supplied excerpts omit the complete direct-output and divided-output frequency ranges, the instrumentation designer must verify coverage, settling time, output level, and calibration limits against the full manufacturer datasheet.
Рекомендуется
Multi-Band RF Signal Generators
The STW81101ATR is specifically described as a multi-band RF frequency synthesizer, making it appropriate for equipment that must move among several RF bands using one compact synthesizer stage. The two differential integrated VCOs can support independent signal paths or parallel RF functions, subject to the device's exact routing and output-mode limits in the manufacturer datasheet. Automatic center-frequency calibration improves repeatability across temperature and supply conditions. Integration reduces the component count and board area associated with separate VCO and PLL networks, although final band coverage, output power, phase-noise performance, and spur limits must be confirmed before selecting the device.
Рекомендуется
RF Communication Receivers
The STW81101ATR can generate a stable local carrier for RF receiver architectures that benefit from programmable frequency selection. Integer-N synthesis provides a straightforward way to relate the programmed RF output to a stable reference, while the integrated differential VCO arrangement avoids the area and assembly burden of a discrete oscillator. The verified 10 MHz to 200 MHz reference range and 3 V to 3.6 V supply are compatible with low-voltage receiver hardware. Before integration, verify that the required LO range is supported, assess phase noise near the carrier, inspect reference-jitter sensitivity, and ensure the PCB implements the manufacturer's differential-routing and decoupling recommendations.
Рекомендуется
Industrial RF Control Modules
The STW81101ATR fits industrial RF modules operating from a 3 V to 3.6 V rail where stable, programmable RF generation is needed in a small surface-mount footprint. Its specified -40°C to +85°C temperature range covers many industrial environments, while automatic center-frequency calibration supports repeatable operation as temperature and supply conditions vary. The 28-pin VFQFPN construction permits dense module layouts, but the 0.5 mm pitch requires careful assembly and inspection. Engineers should budget board area for reference conditioning, supply decoupling, crystal or oscillator support, and the manufacturer-prescribed loop-filter network before finalizing the module design.
Рекомендуется
Frequency-Dependent Communications Modules
The STW81101ATR is appropriate for compact communications modules that generate, divide, or distribute an RF-derived carrier within a multi-band system. Integrating the VCOs directly with the synthesizer can reduce component count and help preserve control over the complete RF generation path. Its dual differential VCO implementation supports single-ended or differential downstream routing depending on the configured output and application. The design must account for reference purity, loop-filter stability, output isolation, and unwanted coupling between RF and digital control lines. Complete frequency coverage and output-level specifications are unavailable in the supplied excerpts and therefore remain mandatory datasheet checks before schematic release.
Рекомендуется
Справочные инженерные данные для STW81101ATR — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | STW81101AT |
|---|---|---|
| Package | 28-pin VFQFPN | 28-pin VFQFPN - same package |
| Brand | STMicroelectronics | STMicroelectronics |
| Device Type | Multi-band RF frequency synthesizer with integrated VCOs | Multi-band RF frequency synthesizer with integrated VCOs |
| Orderable Format | STW81101ATR - Tape and Reel | STW81101AT order code |
Ключевые отличия
- Integrated multi-VCO RF synthesis (против General-purpose PLL or transceiver alternatives)
- Documented same-package replacement path (против STW81101AT)
- Wide verified reference-input capability (против Restricted-reference synthesizer alternatives)
Заметки по проектированию
Treat the reference, synthesizer, and VCO paths as controlled-impedance RF routes rather than ordinary digital traces. Keep the reference input path short, preserve the manufacturer's differential-pair symmetry, and place required passive components at the locations shown in the complete datasheet layout example. The supplied information confirms a 28-pin VFQFPN with 0.5 mm pitch, so small routing errors can have a disproportionate effect on phase noise, spur performance, and calibration repeatability.
Use a quiet 3 V to 3.6 V supply and place the manufacturer's prescribed bypass network immediately beside the device. Estimate the regulator's allowable supply ripple against the synthesizer phase-noise and spur requirements rather than assuming any DC supply is adequate. Keep switching regulators, digital clocks, and high-current return paths away from the reference and VCO nodes to reduce converted noise and prevent calibration variation across operating conditions.
Do not treat a PLL, clock generator, RF transceiver, or divider IC as a drop-in replacement merely because it performs a related function. The supplied cross-reference data explicitly supports STW81101AT because it has consistent terminals and packages, but it does not establish comparable pin compatibility for unrelated parts. Confirm the RF output range, reference requirements, loop-filter architecture, calibration sequence, control interface, and absolute maximum ratings before authorizing a substitution.
The verified information identifies a -40°C to +85°C operating range but does not provide power dissipation, thermal resistance, or maximum output-power limits. Thermal and RF-output assessments therefore require the complete manufacturer electrical characteristics. In a dense module, provide adequate copper area and consider worst-case ambient temperature, supply voltage, output-load state, and calibration operation rather than estimating reliability from the low-profile package alone.
Информация о соответствии
The supplied verified excerpts identify the manufacturer and device category but do not provide extractable RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations.
