SI3056-FS - Integrated Isolated DAA | Skyworks
部品番号: SI3056-FS ✓ 生産中SI3056-FS 概要
A direct access arrangement is a subscriber-line interface circuit that connects a telephone network to a communications system while providing the required line-state detection, ringing, signaling, isolation, and voice-path functions. Within the product hierarchy, a DAA is a telecom interface IC used in telephony, broadband access, voice-over-IP, and related line-termination equipment.
The SI3056 data sheet identifies the SI3056 as a programmable line interface designed to meet global telephone-line interface requirements. Its isolation technology is a central feature because it permits the line-facing circuitry to be integrated into a single package. Compared with a discrete implementation, this integration can reduce board area and the number of external isolation and switching components that a design otherwise needs to coordinate.
The SI3056 is associated with 56Kbps modem-class line-interface operation according to the supplied cross-reference information. The device also appears in distributor records as a telecom interface IC using an SSI interface, while the closely related SI3056-D-FS listing identifies a DAA system-side SSI configuration. Exact voltage, current, timing, temperature, isolation-voltage, and absolute-maximum ratings were not included in the supplied records and therefore require confirmation from the manufacturer data sheet.
Typical uses include analog telephone adapters, voice-over-IP terminals, fax and modem equipment, central-office line-card assemblies, and other systems requiring a programmable interface to the public telephone network. The 16-pin SOIC package is also compatible with conventional surface-mount assembly processes, although designers should confirm the exact footprint, exposed-pad details, and recommended land pattern before layout release.
The primary design consideration is not to infer electrical compatibility from the package alone. Designers should verify pin assignments, supply rails, isolation requirements, interface timing, ringing behavior, and line-side approvals against the applicable version of the Skyworks Si3056 Si3018/19/10 data sheet before production use.
This page consolidates the verified distributor identity, manufacturer data-sheet link, package information, replacement-search evidence, pricing caveats, and engineering comparison points into one traceable reference for the SI3056-FS integrated DAA.
ドロップイン代替品: SI3056-FS — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
SI3056-D-FS
✅ ドロップイン📋 参考代替品（カタログ未掲載）
SI3056-FS 仕様
| Product Type | Integrated direct access arrangement (DAA) |
| Device Function | Programmable telephone-line interface |
| Isolation Technology | Patented Skyworks Solutions isolation technology |
| パッケージ | 16-pin SOIC |
| 実装タイプ | Surface mount |
| Interface Category | Telecom interface IC |
| Associated Data Rate | 56 Kbps |
| Line Interface Support | 2-wire to 4-wire hybrid integration |
SI3056-FS 16-pin soic ピン配置ガイド
SI3056-FS (16-pin soic パッケージ) のピン配置。 ピン番号、機能、接続図はメーカーのデータシートで定義されています。正確なフットプリントとはんだ付けのガイドラインについては、データシートを参照してください。
詳細なピン配置データはありません: SI3056-FS.
詳細は データシート をご参照ください。
主な用途
SI3056-FS の用途: 6 件s: Analog Telephone Adapter, Voice-over-IP Terminal, Fax and Modem Equipment, Central-Office Line Card, Remote Telemetry Equipment, Legacy Data and Voice Terminal.
Analog Telephone Adapter
The SI3056-FS fits an analog telephone adapter because it integrates the functions of a line-facing analog front end, isolation transformer, relays, opto-isolators, and a 2-wire to 4-wire hybrid. Its programmable DAA architecture can simplify the system-side telephone-line interface while the 16-pin SOIC package supports conventional surface-mount assembly. The supplied records associate the SI3056 family with 56 Kbps modem-class operation, making it relevant to legacy voice and data terminals. Before schematic capture, engineers should verify the exact line impedance, ring-voltage requirements, SSI timing, supply levels, and isolation rating in the manufacturer data sheet; those values were not included in the supplied web results.
おすすめ
Voice-over-IP Terminal
The SI3056-FS can serve the telephone-network-facing side of a voice-over-IP terminal, where a programmable DAA provides an interface between line-side circuitry and the communications subsystem. Its integrated isolation and hybrid-related functions are valuable when reducing external analog and isolation-component count. The 16-pin SOIC format is useful for compact voice hardware, and the supplied cross-reference data identifies 56 Kbps operation for the SI3056 family. The exact host-interface protocol, digital timing, power rails, and regional line requirements are not present in the verified records, so a production design must confirm them from the official Si3056 data sheet and applicable network specifications.
おすすめ
Fax and Modem Equipment
The SI3056-FS is relevant to fax and 56 Kbps modem equipment because the verified cross-reference listing identifies the SI3056 family with 56 Kbps modem-class operation. A programmable DAA allows a product to accommodate the line interface through a dedicated integrated circuit rather than a collection of discrete front-end, relay, and isolation blocks. Its 16-pin SOIC package also simplifies board-area planning compared with a larger discrete implementation. Designers should nevertheless validate framing mode, line-state behavior, maximum line voltage, ringing interface, and digital timing against the specific product architecture. Those electrical details were not included in the supplied records and cannot be inferred from the family description alone.
おすすめ
Central-Office Line Card
The SI3056-FS can be evaluated for a central-office line-card or subscriber-line interface where programmable telephone-line connectivity and integrated isolation are priorities. Consolidating functions associated with an analog front end, transformer, relays, opto-isolators, and a hybrid can reduce component count and simplify assembly. The 16-pin SOIC package is compatible with surface-mount manufacturing, while the programmable interface may support different line configurations. Because telecom line cards can face strict safety, isolation, and network-compatibility requirements, the candidate must be checked against the manufacturer ordering table, maximum ratings, and certified network-interface requirements. No relevant agency certifications were supplied for the target.
おすすめ
Remote Telemetry Equipment
The SI3056-FS can be considered in remote telemetry or supervisory equipment that must communicate through a telephone line while separating line-facing circuitry from sensitive host electronics. Its patented isolation technology and integrated DAA functions address the physical isolation and line-interface requirements of this environment. The 56 Kbps association documented for the family supports legacy modem-channel use cases, while the 16-pin SOIC package limits board footprint. The design must still establish operating temperature, supply voltage, isolation withstand, line-side power, and digital-interface levels from the official data sheet because the supplied records do not provide those values or regional approvals.
おすすめ
Legacy Data and Voice Terminal
The SI3056-FS is suitable for evaluation in a legacy data-and-voice terminal that combines modem-class communication with a telephone-network connection. The integrated direct access arrangement provides a programmable line interface and combines several traditionally discrete blocks into one 16-pin SOIC device. This integration can assist designers seeking a compact, repeatable implementation rather than separately sourcing a front end, isolation transformer, relay network, and hybrid. Verification must cover channel signaling, line-state timing, supply sequencing, EMI behavior, and the exact SSI configuration. The available distributor snippets identify the product family and package but do not provide enough electrical detail to certify a design without reviewing the complete manufacturer document.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: SI3056-FS — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | SI3056-D-FS |
|---|---|---|
| Package | 16-pin SOIC | 16-pin SOIC - same |
| Brand | Skyworks Solutions Inc. | Skyworks Solutions Inc. - same |
| Product Type | Integrated direct access arrangement (DAA) | DAA system-side SSI interface |
| Interface Function | Programmable telephone-line interface | DAA system-side SSI interface |
主な差別化要因
- Exact non-D ordering identity （vs SI3056-D-FS)
- Programmable DAA positioning （vs SI3056-D-FS)
- Integrated line-interface consolidation （vs SI3056-D-FS)
設計ノート
Use the official 16-pin SOIC land pattern and verify whether the selected ordering code has a standard SOIC body, an exposed thermal pad, or a special isolation-related layout. Place the device, line-side protection network, and required passives according to the manufacturer application diagram. Because the supplied records do not reproduce the pinout or isolation layout, do not derive copper clearances solely from the generic package drawing; use the official data sheet and its isolation guidance for the production PCB.
Do not treat SI3056-FS and SI3056-D-FS as interchangeable solely because both distributor records identify a 16-pin SOIC DAA. The verified information distinguishes the D-FS as a system-side SSI device, but it does not disclose the full pin function, temperature grade, timing, or electrical comparison. Approve a substitution only after checking the ordering-information table, every supply and interface pin, isolation rating, and system timing in the manufacturer data sheet.
Treat the telephone line as a high-voltage, high-impedance environment and preserve the manufacturer-recommended separation between line-side and logic-side circuitry. Route protection and line-connection paths directly to the intended pins, maintain the prescribed isolation geometry, and keep high-energy transient paths away from sensitive host-interface traces. Grounding, shielding, and surge protection must follow the applicable telephone-interface and network requirements because specific creepage, clearance, and protection values were not present in the supplied data.
Decouple each applicable supply rail at the package pins using the capacitance and placement specified by the manufacturer. Check the actual SI3056-FS ordering code before populating the power network because the supplied records do not specify nominal voltage, current, shutdown behavior, or sequence requirements. Confirm normal, worst-case line-state, and peak transient current before selecting regulators or copper area; the 56 Kbps association in the cross-reference listing does not define power dissipation.
コンプライアンス情報
The supplied verified data does not state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification status. AEC-Q100 is marked not applicable because this is a telecom interface IC and no automotive qualification was identified.