BCM89836A0BFBG - 100BASE-T1 Automotive Ethernet PHY | Broadcom
Référence : BCM89836A0BFBG ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $0 | $0,00 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1 000 | $0 | $0,00 |
BCM89836A0BFBG Présentation
Automotive Ethernet PHYs form the physical layer of the modern in-vehicle network hierarchy: the PHY converts digital MAC data into analog signals for transmission over the single twisted pair, sitting below the Ethernet switch and above the copper cable plant. 100BASE-T1 (formerly BroadR-Reach) replaced legacy 100 Mbit/s systems by transmitting transmit and receive signals simultaneously in full-duplex mode over one pair, saving wiring weight and cost in vehicles.
Key characteristics of the BCM89836 family include single-pair full-duplex 100 Mbit/s operation, automotive temperature capability, low electromagnetic emissions suitable for unshielded cabling, and support for power-saving modes demanded by telematics and body-electronics modules. According to Mouser, the part is catalogued as an RF System on a Chip - SoC 100BASE-T1 PHY, confirming its role as a highly integrated PHY SoC rather than a discrete transceiver front end.
Architecturally, the device integrates the analog front end, DSP-based equalizers, echo cancellation and clock recovery needed to achieve reliable 100 Mbit/s communication over a single pair at distances used in vehicle topologies. Integration reduces the bill of materials versus discrete PHY plus magnetics approaches, and helps meet the strict EMI budgets of antenna-proximate modules.
Typical applications include automotive camera links for surround-view and driver-monitoring systems, ADAS sensor networks, telematics control units, gateway modules, infotainment backbones, and battery management communication in electric vehicles - anywhere a compact, low-cost, EMI-friendly 100 Mbit/s in-vehicle link is required.
When designing this part in, verify the exact package dimensions, pinout and supply rails against the official Broadcom datasheet, and follow the manufacturer reference schematic for MDI termination, magnetics and decoupling, since single-pair PHY performance is highly layout dependent.
This page synthesizes distributor pricing and availability, cross-reference research results, and practical design notes in one place - information not consolidated in the manufacturer datasheet. All unverified parameters are explicitly flagged rather than guessed.
Alternatives de remplacement direct pour BCM89836A0BFBG — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
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BCM89836A0BFBG Valeurs maximales et caractéristiques électriques
| Product Type | 100BASE-T1 Automotive Ethernet PHY SoC |
| Manufacturer | Broadcom Limited (Broadcom / Avago) |
| Débit de données | 100 Mbit/s |
| Ethernet Standard | 100BASE-T1 (single-pair, full-duplex) |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant (per JLCPCB listing) |
| Statut du cycle de vie | Active (in production, ships today per DigiKey) |
Guide de configuration des broches du BCM89836A0BFBG standard
Configuration des broches du BCM89836A0BFBG (boîtier standard). Ce composant analogique comporte des broches d'entrée, de sortie et d'alimentation. Consultez la fiche technique du fabricant pour les configurations des broches d'annulation d'offset, de compensation et d'activation. Idéal pour le conditionnement de signaux et les circuits amplificateurs.
Aucune donnée de brochage détaillée disponible pour BCM89836A0BFBG.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
BCM89836A0BFBG convient pour 6 applications: Automotive Camera Links, Telematics Control Units (TCU), Vehicle Gateway Modules, ADAS Sensor Networking, Infotainment and Display Links, Electric Vehicle Battery Management.
Automotive Camera Links
The BCM89836A0BFBG connects surround-view, rear-view and driver-monitoring cameras to the vehicle ECU over a single unshielded twisted pair at 100 Mbit/s, sufficient for compressed video streams from multiple camera modules. Because 100BASE-T1 transmits full-duplex on one pair, the harness saves copper weight and connector size versus two-pair solutions, and the PHY's low-emission profile helps modules meet EMC limits when routed near vehicle antennas. The PHY is placed between the camera's MAC (typically a SoC in the camera or ECU) and the MDI connector with integrated magnetics; the link budget and cable length must be validated against the 100BASE-T1 reach specification for the vehicle topology.
Recommandé
Telematics Control Units (TCU)
In telematics control units, the BCM89836A0BFBG provides the 100 Mbit/s in-vehicle uplink between the cellular/wireless module and the vehicle gateway. Single-pair Ethernet keeps the TCU harness minimal in a module that is often space-constrained and mounted near the vehicle roof or windshield, where emissions budgets are strictest. The PHY's full-duplex 100BASE-T1 link carries diagnostic, OTA-update and infotainment traffic concurrently. Power-saving modes reduce standby drain on the always-connected battery rail - confirm the exact low-power mode set in the datasheet when dimensioning the sleep current budget of the vehicle.
Recommandé
Vehicle Gateway Modules
Central gateways aggregate CAN, LIN, FlexRay and Ethernet domains; the BCM89836A0BFBG adds cost-effective 100 Mbit/s single-pair Ethernet ports for camera, ADAS and infotainment branches without the cost of gigabit PHYs where bandwidth is unnecessary. Its DSP-based equalization and echo cancellation sustain reliable links over the cabling lengths typical of vehicle star topologies. When designing the gateway PCB, keep the MDI differential pair length-matched and impedance-controlled at 100 ohms, and place the magnetics close to the connector per the Broadcom reference design to preserve the module's EMC margins.
Recommandé
ADAS Sensor Networking
Radar, lidar and ultrasonic sensor clusters increasingly use 100BASE-T1 as their data backbone; the BCM89836A0BFBG offers the bandwidth needed for fused object data and diagnostic streams while keeping cabling to a single twisted pair. The automotive-oriented PHY family integrates the analog front end and clock recovery needed for robust links in the electrically noisy engine-bay and chassis environment, subject to compliance with the module's overall EMC test plan. Designers should validate link performance over the actual cable harness type and length, including connector discontinuities, during vehicle-level EMC and EMI testing.
Recommandé
Infotainment and Display Links
Head units, displays and audio amplifiers in the infotainment domain use 100 Mbit/s single-pair Ethernet for control and compressed audio/video transport. The BCM89836A0BFBG's single-pair interface simplifies the daisy-chained cabling between head unit and rear-seat displays, and its full-duplex 100 Mbit/s rate accommodates compressed streams plus control traffic. Because these modules are user-facing, electromagnetic emissions from the PHY and its magnetics must be checked against consumer-grade EMC limits as well as automotive requirements; follow the manufacturer reference layout for grounding of the MDI termination network.
Recommandé
Electric Vehicle Battery Management
EV battery management systems adopt 100BASE-T1 single-pair Ethernet as a daisy-chain communication layer between battery module controllers and the master BMS, replacing or complementing ring-type isolated serial buses. The BCM89836A0BFBG supplies the 100 Mbit/s physical layer with the low pair count and connector cost that high-cell-count packs require. Thermal design must account for the PHY's power dissipation inside sealed pack enclosures - verify junction-to-ambient thermal resistance in the datasheet and derate for the pack's maximum ambient. Confirm isolation strategy on the MDI side per the HV-safety requirements of the pack.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour BCM89836A0BFBG — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | BCM89836A0BFBG (family variants - same package suffix BFBG) | BCM89836A0BFBG P3G (tape-and-reel ordering variant of same family code) |
|---|---|---|---|
| Brand | Broadcom Limited | Broadcom Limited | Broadcom Limited |
| Ethernet Standard | 100BASE-T1 | 100BASE-T1 | 100BASE-T1 |
| Data Rate | 100 Mbit/s | 100 Mbit/s | 100 Mbit/s |
| Media | Single unshielded twisted pair, full-duplex | Same | Same |
Principaux différenciateurs
- Same-family drop-in substitutability (vs BCM89836A0BFBG family variants)
- Highly integrated PHY SoC (vs Discrete PHY + front-end solutions)
- Availability (vs Scarce automotive PHYs)
Notes de conception
The 100BASE-T1 MDI pair is the most performance-critical net on the board. Route it as a tightly coupled differential pair with 100 ohm differential impedance, length-match the two traces, keep stubs out of the path, and place the magnetics/integrated connector within a few millimeters of the PHY MDI pins. Use a solid reference plane under the pair and avoid crossing plane splits. Follow the Broadcom reference schematic for the exact termination and decoupling network - single-pair PHY EMC results depend heavily on this network being reproduced faithfully.
Supply every PHY power pin per the official Broadcom datasheet pin map and decouple each pin with a local ceramic capacitor (typically 100 nF) with a bulk capacitor per rail near the regulator. Verify supply rail sequencing requirements before powering the PHY together with the host MAC. Because exact supply voltage values for the BCM89836A0BFBG are gated behind the NDA datasheet, confirm rails from the official document rather than from secondary listings before committing to a regulator choice.
Common failure modes with single-pair automotive Ethernet PHYs: (1) routing the MDI pair as two single-ended traces - this violates differential impedance and fails EMC; (2) substituting the magnetics with a non-qualified transformer - 100BASE-T1 termination differs from 100BASE-TX; (3) assuming software compatibility with other vendors' PHYs - PHY drivers and initialization sequences are vendor-specific; (4) skipping link validation over the real harness length. Validate each of these against the Broadcom reference design before design freeze.
Informations de conformité
RoHS compliance stated on JLCPCB part page (C5595692). AEC-Q100 status not stated in verified data - marked not_applicable pending confirmation from official Broadcom documentation; obtain formal certificates from DigiKey/Mouser compliance downloads.
