BCM43217KMLG - 2x2 802.11n RF Transceiver | Broadcom
料号： BCM43217KMLG ✓ 量产中BCM43217KMLG 概述
An RF transceiver is the radio-frequency section of a wireless system. It converts transmitted data into RF signals and converts received RF signals back into digital data. A 2x2 radio provides two spatial transmit and receive paths, while 802.11n defines the wireless networking standard implemented by the associated WLAN system. These devices sit between the baseband or host processor and the antennas in a complete connected product.
The principal product attributes visible in manufacturer and distributor documentation are its 2x2 radio configuration, single-band operation, 802.11n support, low-cost positioning, and QFN package. The QFN format supports compact board layouts, but its exposed thermal and electrical features require careful land-pattern design. The Broadcom family designation identifies BCM43217 as the product series and KMLG as the ordering variant.
The BCM43217KMLG is positioned for cost-sensitive embedded WLAN equipment in which a single-band 802.11n connection is sufficient. Unlike a dual-band solution, it does not provide separate radio paths for multiple frequency bands, so system planners should select it only where one supported band satisfies the regional and application requirements. Its 2x2 configuration can support higher spatial-stream throughput than a 1x1 radio when the host, antenna system, channel conditions, and client support the full capability.
Typical implementation environments include embedded access points, wireless routers, range extenders, industrial wireless gateways, connected appliances, and embedded OEM modules. Host integration also requires suitable crystal, power-supply, antenna, and RF routing arrangements. Because the exact frequency band, pinout, electrical limits, and operating-temperature limits are not stated in the accessible product records, those details must be confirmed in the manufacturer datasheet before schematic release.
The primary design consideration is PCB compatibility. Confirm the exact KMLG land pattern, pin assignments, exposed-pad connection, and recommended antenna network against the manufacturer datasheet. Preserve the RF layout geometry and keep the antenna feed path free of unnecessary copper and high-current switching nodes. Prototype the power network and antenna matching because package choice alone does not guarantee RF performance.
This page consolidates the exact product identity, package format, wireless configuration, sourcing context, comparison information, and practical integration considerations for BCM43217KMLG. It also distinguishes the documented KMLG ordering variant from the closely related BCM43217TKMLG family member while directing critical engineering decisions to the Broadcom manufacturer datasheet.
直接替换替代料： BCM43217KMLG ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
BCM43217TKMLG
✅ 直接替换📋 参考替代料（不在目录中）
BCM43217KMLG 最大额定值与电气特性
| Manufacturer | Broadcom |
| Product Type | RF Transceiver |
| Wireless Standard | 802.11n |
| Radio Configuration | 2x2 |
| Frequency Band | Single band |
| Product Positioning | Ultimate low cost |
| 封装 | QFN |
| Factory Pack Quantity | 2436 pieces |
| RoHS 状态 | Details stated; compliance status not specified |
| 生命周期状态 | Active |
BCM43217KMLG qfn 引脚配置指南
BCM43217KMLG（qfn 封装）的引脚配置。 该模拟元件具有输入、输出和电源引脚。请参阅制造商数据手册以了解失调调零、补偿和使能引脚配置。适用于信号调理和放大器电路。
暂无详细引脚数据： BCM43217KMLG.
请参阅 数据手册 以查看完整引脚配置。
典型应用
BCM43217KMLG 适用于 6 应用s: Embedded Wireless Router, Access Point, Industrial Wireless Gateway, Connected Appliance, Wireless Range Extender, Embedded OEM Wireless Module.
Embedded Wireless Router
BCM43217KMLG fits an embedded single-band router requiring 802.11n connectivity and a compact 2x2 radio arrangement. The two transmit and two receive paths can support spatial-stream operation when the host platform, antennas, and client devices support the full arrangement. Integrating the transceiver in a QFN package helps conserve PCB area in compact networking equipment. The design must provide the manufacturer-specified supply rails, crystal support, decoupling, antenna network, and controlled-impedance RF routing. Confirm the supported frequency band and regional transmit-power limits before the PCB is released.
推荐
Access Point
The BCM43217KMLG is applicable to a cost-sensitive 802.11n access point that uses one wireless band and a 2x2 antenna configuration. Its QFN package supports compact radio placement, while the 2x2 architecture can improve spatial diversity and client capacity compared with a 1x1 radio. The access-point board still needs suitable antenna isolation, matching components, a stable reference source, and power filtering. Confirm conducted output power, receiver sensitivity, channel coverage, and regulatory limits in the Broadcom manufacturer datasheet before deployment.
推荐
Industrial Wireless Gateway
BCM43217KMLG can support an industrial wireless gateway that connects equipment over a single-band 802.11n link. Its 2x2 radio configuration provides two spatial paths, which can help maintain connectivity in environments where multipath propagation and interference are concerns. The QFN package also reduces board consumption in gateways with several communication and processing functions. Industrial implementations should verify the operating-temperature grade, regulatory band, antenna isolation, and conducted emissions. Use the manufacturer reference layout and validate RF behavior under representative metal-enclosure conditions.
推荐
Connected Appliance
BCM43217KMLG is suited to a connected appliance that needs embedded 802.11n control or telemetry without the board area of a larger wireless module. The single-band radio can support local network communication, while the 2x2 configuration may improve link robustness compared with a basic 1x1 radio. Appliance designers should place the QFN device near the antenna boundary, maintain a short feed path, and isolate the radio from motors, relays, switching supplies, and digital clocks. Confirm the supported band, supply requirements, and exact land pattern before committing the PCB.
推荐
Wireless Range Extender
BCM43217KMLG can serve as the radio element of an 802.11n range extender in a compact OEM module. A 2x2 arrangement can support spatial diversity through two antennas, helping maintain coverage across rooms, floors, or retail environments. The low-cost positioning is useful for cost-sensitive networking accessories, while the QFN package supports dense board layouts. Success depends on correct antenna placement, matching, isolation, and regulatory compliance. Confirm the radio band and output limits in the Broadcom manufacturer datasheet, and test the complete enclosure rather than evaluating only the bare board.
推荐
Embedded OEM Wireless Module
BCM43217KMLG is appropriate for an embedded OEM wireless module that exposes 802.11n connectivity to a host processor. The 2x2 radio allows two antenna connections and can improve throughput or resilience when both ends of the link support spatial streams. Its QFN package gives module designers a compact central radio component while leaving the host interface, supply design, and regulatory approvals to the integrator. The module layout should closely follow the manufacturer's reference placement and routing. Validate boot interfaces, reference-clock requirements, RF calibration, and antenna performance on production-intent hardware.
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推荐产品汇总
工程参考数据： BCM43217KMLG ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | BCM43217TKMLG |
|---|---|---|
| Brand | Broadcom | Broadcom |
| Package | QFN | QFN |
| Product Type | RF Transceiver | RF Transceiver |
| Wireless Standard | 802.11n | 802.11n |
| Radio Configuration | 2x2 | 2x2 |
| Factory Pack Quantity | 2436 pieces | 2436 pieces |
| Product Description | Ultimate low-cost 2x2 802.11n RF transceiver | Ultimate low-cost 802.11n 2x2 RF transceiver |
| RoHS Status | Details stated; compliance status not specified | Details stated; compliance status not specified |
关键差异点
- Exact Broadcom KMLG ordering variant （对比 BCM43217TKMLG)
- Low-cost integrated radio positioning （对比 BCM43217TKMLG)
- Compact QFN radio implementation （对比 BCM43217TKMLG)
设计说明
Use the exact Broadcom QFN land pattern and exposed-pad treatment shown for BCM43217KMLG. Confirm pin 1 orientation, ground-pad connections, and the permitted solder-mask and paste-land geometry before fabrication. Place decoupling capacitors adjacent to their assigned supply pins and provide a low-impedance ground reference. Because the exact pin count and net names are not stated in the product record, do not assign PCB connections until the manufacturer pin-description table has been checked.
Keep the antenna feed path short and use the reference component placement and transmission-line geometry specified by Broadcom. Avoid placing digital traces, test pads, connector launches, and switching-power nodes beneath or parallel to the RF path. Reserve a clean antenna keep-out where required and maintain consistent reference geometry through the matching network. Validate the completed board with conducted antenna measurements because an electrically correct schematic does not guarantee acceptable in-enclosure RF performance.
Build the supply network from the manufacturer reference schematic, including the specified filtering, bulk capacitance, and local high-frequency bypass. Route high-current return paths away from the radio's sensitive supply and ground connections, and verify startup and load-transient behavior on prototypes. The exact voltage range, current demand, and decoupling values are not stated in the accessible product record, so use the Broadcom manufacturer datasheet rather than generic values before schematic release.
Do not treat BCM43217TKMLG as interchangeable solely because it shares the BCM43217 series and 2x2 802.11n description. The ordering suffix may encode a different grade or option, and the published comparison does not decode the difference. Check the suffix definition, temperature range, frequency band, pinout, package drawing, and electrical limits for both order codes. If any of these differ, the part is not a drop-in replacement regardless of its similar marketing description.
合规信息
The comparison record displays a RoHS details field but does not explicitly state a compliant, non-compliant, or unknown declaration. No REACH, halogen-free, lead-free, conflict-minerals, or automotive qualification result is stated for BCM43217KMLG.
