BCM47452SM02 - RF System on Chip SoC | Broadcom | Wireless
MPN： BCM47452SM02 ✓ 啟用中BCM47452SM02 概覽
An RF system on chip is a semiconductor category in which an RF transceiver, baseband or MAC controller, and often an embedded host processor are combined on one die. The SoC hierarchy runs from wireless connectivity module, to RF SoC, to integrated circuit and finally to semiconductor. Bundling the radio chain and the Ethernet physical layer on a single die reduces board area, EMI coupling between radio and digital sections, and the number of external components a designer must qualify.
The BCM47452SM02 is described by Broadcom as an RF System on Chip for embedded connectivity, integrating the BCM47452, BCM43217 and BCM54210E functions. This combination allows a single PCB to serve as a dual-band 802.11ac access point, a media gateway, or a smart-home hub while still offering Gigabit Ethernet connectivity. Because the radio and Ethernet PHYs share the same die, the design avoids the module-to-module interconnect losses typical of discrete solutions.
Key engineering benefits of this integration are lower BOM cost, reduced board area, faster software bring-up since one vendor supports the whole connectivity stack, and simpler regulatory qualification because only one IC carries the radio emissions profile. The trade-off is reduced flexibility: because the parts are pre-integrated and Broadcom-provisioned, you cannot substitute an individual PHY or add a third radio band without changing the platform.
Typical uses include home gateway and mesh router products, cable and satellite set-top boxes, IPTV and media players, and connected smart-home controllers that must bridge 802.11ac clients to a Gigabit Ethernet backbone. Industrial and building-automation gateways benefit when the same chip serves both the wireless commissioning link and the wired supervisory network.
In a hardware design, budget the PCB for a multilayer stack-up with a continuous ground reference plane, keep the Ethernet magnetics and 50-ohm routing away from the radio front end, and provide the reference clock and power rails the Broadcom reference design specifies. Follow the manufacturer evaluation platform for antenna matching, because the tuned layout around the RF pins is part of the radio performance, not just a mechanical detail.
直接替換替代品，適用於 BCM47452SM02 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
BCM47452SM01
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
BCM47452SM00
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
BCM47452SM03
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
BCM47452A1
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
BCM47452SM02 最大額定值與電氣特性
| Device Type | RF System on Chip (SoC) |
| Integrated Silicon | BCM47452 + BCM43217 + BCM54210E |
| Manufacturer | Broadcom |
| Ethernet Interface | Gigabit Ethernet transceiver integrated (BCM54210E) |
| 安裝類型 | Surface Mount |
| Order Code Suffix | SM02 revision code |
BCM47452SM02 standard 腳位配置指南
BCM47452SM02（standard 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： BCM47452SM02.
請參閱 資料表 以查看完整腳位配置。
典型應用
BCM47452SM02 適用於 6 應用s: Dual-Band Home Gateway and Mesh Router, Cable and Satellite Set-Top Box, Smart-Home Hub with Wireless Commissioning Link, Industrial and Building-Automation Gateway, IPTV Media Player and Streaming Box, Connected Consumer Gateway with Wired Backup.
Dual-Band Home Gateway and Mesh Router
The BCM47452SM02 suits a home gateway because it carries the BCM47452 wireless processor, the BCM43217 wireless plus Bluetooth block and the BCM54210E Gigabit Ethernet transceiver on one die. In a mesh router this means the radio and the wired backhaul PHY share a single device, shrinking PCB area in an enclosure that is already thermally constrained. Using one integrated part also removes the RF-to-digital interconnect of a discrete radio design, which lowers radiated emissions risk and simplifies the antenna matching network layout around the radio pads. The practical trade-off is reduced sourcing flexibility, because the integrated die cannot be split across two vendors if one block becomes end-of-life.
推薦
Cable and Satellite Set-Top Box
In a set-top box the BCM47452SM02 provides both the wireless client link and the Gigabit Ethernet output path without adding a separate Ethernet PHY to the board. The 802.11ac-capable radio allows playback devices and phones to offload video streams over Wi-Fi while the operator network path stays wired and deterministic. Because the radio and the Ethernet PHY are integrated, the board requires one RF section with the manufacturer reference layout and one Ethernet magnetics section, which shortens PCB routing and reduces the number of parts to qualify for an operator programme. Watch the thermal path through the exposed pad, since sealed set-top boxes often run at elevated ambient temperatures.
推薦
Smart-Home Hub with Wireless Commissioning Link
A smart-home hub built on the BCM47452SM02 can use the same silicon for the wireless commissioning and control link and for the wired supervisory network. Because the BCM47452, BCM43217 and BCM54210E functions share one die, the hub can accept new device credentials over Wi-Fi and then forward them to a wired controller without a second network interface chip. The BCM43217 block adds Bluetooth capability, which is useful for pairing sensors and door locks without an additional radio. The key design consideration is antenna placement inside a plastic enclosure, where the manufacturer reference layout and matching network must be reproduced exactly for acceptable radio performance.
推薦
Industrial and Building-Automation Gateway
Building-automation gateways need both a commissioning radio and a hardwired supervisory network, and the BCM47452SM02 delivers both from a single device. Combining the BCM47452 wireless processor with the BCM54210E Gigabit Ethernet transceiver removes a board partition and the isolation concerns that arise when an RF section sits next to a separate high-speed PHY. It also reduces the number of external components required for regulatory approval in a building environment. Design rules include keeping the Ethernet magnetics at least a safe distance from the radio pads, using a multilayer stack-up with a solid ground reference, and derating junction temperature for the maximum ambient inside a DIN-rail enclosure.
推薦
IPTV Media Player and Streaming Box
An IPTV media player benefits from the BCM47452SM02 because streaming clients on the local network can be served over 802.11ac while the box keeps a Gigabit Ethernet uplink for high-bitrate content delivery. The integrated approach shortens the path from RF reception to the Ethernet MAC inside the same package, which reduces latency jitter compared with a discrete radio feeding a separate PHY. The Bluetooth portion of the BCM43217 block supports pairing of remote controls and companion speakers without another radio on the board. A key engineering trade-off is that the single silicon revision then governs both the radio and Ethernet path, so it is worth confirming long-term supply and firmware support for the chosen revision.
推薦
Connected Consumer Gateway with Wired Backup
Consumer gateways that must keep connectivity when the wireless link degrades benefit from having a Gigabit Ethernet PHY in the same device as the radio. With the BCM47452SM02, the fallback path does not require a separate transceiver chip or extra board area, which matters in small-form-factor products such as mesh extenders and connected hubs. The BCM43217 block also brings Bluetooth for accessory and provisioning use cases. Engineering guidance is to treat the Ethernet channel as a controlled-impedance structure, keep the magnetics area clear of the antenna region, and use the manufacturer evaluation platform to validate both the radio matching and the link margin before layout freeze.
推薦
推薦產品摘要
工程參考資料，適用於 BCM47452SM02 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | BCM47452SM01 | BCM47452SM00 | BCM47452SM03 | BCM47452A1 |
|---|---|---|---|---|---|
| Brand | Broadcom | Broadcom | Broadcom | Broadcom | Broadcom |
| Device Type | RF System on Chip (SoC) | RF System on Chip (SoC) | RF System on Chip (SoC) | RF System on Chip (SoC) | RF System on Chip (SoC) |
| Integrated Silicon | BCM47452 + BCM43217 + BCM54210E | BCM47452 + BCM43217 + BCM54210E | BCM47452 + BCM43217 + BCM54210E | BCM47452 + BCM43217 + BCM54210E | BCM47452 family generation |
| Silicon Revision | SM02 | SM01 | SM00 | SM03 | A1 |
主要差異化特點
- Radio, Bluetooth and Gigabit Ethernet PHY integrated on one die (對比Discrete radio plus external Ethernet PHY architecture)
- Newer silicon revision for fresh qualification cycles (對比BCM47452SM01)
- Single-vendor accountability for the whole connectivity stack (對比BCM47083SL01)
設計說明
Treat the radio section of the BCM47452SM02 board as a tuned RF layout, not a generic routing job. Reproduce the manufacturer reference land pattern for the antenna matching network, keep the RF pads and their routed traces free of ground pour on the opposite layers where the reference design specifies, and observe the keep-out around the radio pins. Changing trace length or impedance inside the matching network shifts the antenna resonance, which shows up as reduced link margin and poor regulatory margin rather than as an obvious schematic error.
Separate the Ethernet channel from the radio front end. Place the isolation transformer and the differential 100-ohm pairs at a distance from the antenna feed and matching components, keep the Ethernet differential pair impedance controlled and matched to the magnetics, and avoid running Ethernet traces beneath the radio area or across the reference plane cutouts created by antenna routing. The BCM54210E Gigabit Ethernet transceiver shares this die with the radio, so intra-package coupling is already minimized; board-level separation is what keeps the design clean.
Estimated: with the BCM47452SM02 exposed pad on a 4-layer board with a solid ground pour, the junction-to-ambient rise depends on the copper area available for heat spreading, so calculate the worst case at the maximum enclosure ambient. Determine the actual thermal pad area, copper keep-out and via count from the manufacturer mechanical drawing, then apply the resulting junction temperature limit from the datasheet. Because the radio, Bluetooth and Ethernet PHY are all active in the same package, derate for the aggregate dissipation rather than for a single block.
合規資訊
No RoHS, REACH, halogen-free or conflict-minerals statements appear in the distributor product summaries for the BCM47452SM02. Confirm compliance from the Broadcom product page and the material declaration for the specific silicon revision before release. The part is an embedded consumer and industrial connectivity device, so automotive AEC-Q100 qualification is treated as not applicable.
