SI3201-FS 100V Linefeed Interface IC | Skyworks | 16-SOIC
N.º da peça: SI3201-FS ✓ AtivoSI3201-FS Visão geral
The SI3201-FS addresses the subscriber-line side of a voice terminal or CPE design by combining linefeed control, ringing-voltage generation, battery feed, and codec interfacing in one IC. Its programmable architecture allows the system to configure line parameters and ringing behavior through software rather than relying on a large collection of discrete telephone-network components. The listed electrical headline is a 100 V linefeed interface, while the device description identifies programmable internal balanced ringing up to 90 VPK under specified REN and loop-length conditions.
A key feature is the integrated battery supply with dynamic voltage output. In a telephone design, this function supports the line DC feed required by the subscriber line while allowing the system to manage line conditions dynamically. The software-programmable codec interface simplifies connection between the line interface and a digital voice processor or system controller. Because the SI3201-FS is intended for a 16-SOIC footprint, it can be integrated into CPE hardware with a surface-mount assembly process rather than through-hole insertion.
Typical applications include analog telephone adapters, voice over IP terminals, residential gateways, digital subscriber line equipment, and other CPE products requiring a programmable analog line interface. The device should be selected only when the host design supports the associated ProSLIC software, codec interface, ringing and battery requirements, and the specified line parameters. The SI3201-FS is not a general-purpose low-voltage regulator or a replacement for a conventional codec.
For implementation, engineers must follow the manufacturer datasheet for hook-state behavior, linefeed current, ringing limits, battery voltage, external component selection, and software configuration. Particular attention should be paid to the 100 V linefeed classification and the 90 VPK balanced ringing capability, since these values determine insulation, creepage, transient protection, and PCB spacing requirements. This page consolidates the verified distributor descriptions, package information, sourcing links, and application guidance for engineers evaluating the SI3201-FS.
Alternativas drop-in para SI3201-FS — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com SI3201-FS (mesmo formato e footprint) — diferindo em Package, Battery Supply, Channel Count, Device Type.
SI3201-GS
✅ Drop-InConsulte o preço
Ver ficha técnica →SI3201-GSR
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
SI3201-FS Especificações
| Device Type | Subscriber Line Interface Concept (SLIC), telecom interface IC |
| Linefeed Voltage | 100 V |
| Ringing Voltage | Up to 90 VPK, software-programmable internal balanced ringing |
| Ringing Condition | 5 REN to 4 kft; 3 REN to 8 kft |
| Architecture | Programmable CMOS SLIC |
| Codec Interface | Software-programmable codec interface |
| Battery Supply | Integrated battery supply with dynamic voltage output |
| Channel Count | 1 SLIC channel |
| Tensão de alimentação | 3.3 V / 5 V |
| Corrente de repouso | 41 mA |
| Encapsulamento | 16-SOIC |
| Package Width | 3.90 mm |
| Tipo de montagem | Surface mount |
| Lead Status | Lead-free |
| Manufacturer Description | 100 V linefeed interface IC for Si321x |
Guia de Configuração de Pinos do SI3201-FS 3.90 mm
Configuração de pinos para SI3201-FS (pacote 3.90 mm). A numeração dos pinos, funções e diagramas de conexão estão definidos no datasheet do fabricante. Consulte-o para o footprint exato e diretrizes de soldagem.
Nenhum dado detalhado de pinagem disponível para SI3201-FS.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
SI3201-FS é adequado para 6 aplicaçãos: Analog Telephone Adapter, Voice over IP Terminal, Residential Gateway, Digital Subscriber Line Equipment, Analog Voice Fax and Terminal Equipment, Customer Premises Equipment Line Interface.
Analog Telephone Adapter
The SI3201-FS fits the analog subscriber-line side of a telephone adapter because it combines a 100 V linefeed interface, integrated battery supply, programmable ringing, and a codec interface in one 16-SOIC device. Its software-programmable CMOS architecture lets the host processor configure ringing and line behavior instead of relying on a large discrete line-interface network. The verified description supports internal balanced ringing up to 90 VPK, with specified conditions of 5 REN to 4 kft and 3 REN to 8 kft. A practical design must still include the required external protection and line-network components, and must validate the complete battery, hook-state, and codec sequence against the manufacturer datasheet.
Recomendado
Voice over IP Terminal
The SI3201-FS is suited to voice over IP terminals that retain an analog telephone-line connection. Its 100 V linefeed capability, integrated dynamic battery supply, and programmable codec interface provide the physical-layer functions needed to bridge a digital voice processor to a subscriber line. The verified ringing specification reaches 90 VPK under stated REN and loop-length conditions, which is useful for remote hook-state and ring-generation requirements. Designers should treat high-voltage ringing and linefeed as a signal-integrity and protection concern, using the manufacturer reference implementation for external components, surge protection, isolation strategy, and firmware initialization.
Recomendado
Residential Gateway
A residential gateway with analog voice support can use the SI3201-FS to add a programmable subscriber-line interface without implementing a discrete telephone network in separate blocks. The device combines linefeed, battery generation, ringing, and codec communication in a 16-SOIC package, helping conserve board area in compact CPE equipment. Its verified 90 VPK balanced-ringing capability supports telephone signaling while the 3.3 V or 5 V family operation accommodates different host designs. Before release, engineers should validate country-specific line parameters, ring cadence, REN loading, insulation spacing, and the host processor's software support for the selected ProSLIC configuration.
Recomendado
Digital Subscriber Line Equipment
The SI3201-FS is appropriate for CPE equipment that includes a legacy analog voice path alongside broadband functions. Its 100 V linefeed interface, integrated battery supply, and programmable ringing allow the analog section to be consolidated into a single IC, while the codec interface connects that section to the system's digital voice resources. The verified descriptions identify a one-channel architecture in a 16-SOIC package, making it suitable for compact subscriber-facing boards. Integration must account for the line-side high voltage, linefeed current, codec clocking, firmware configuration, and protection components specified by the manufacturer application information.
Recomendado
Analog Voice Fax and Terminal Equipment
The SI3201-FS can support legacy analog voice terminals, fax machines, or telephone equipment that require a programmable line interface. Its integrated battery supply and software-programmable balanced ringing reduce the number of separate analog line functions required in the design. The verified device description states ringing up to 90 VPK, but the applicable REN and loop-length conditions are explicitly limited to 5 REN to 4 kft and 3 REN to 8 kft. Engineers should confirm those loading constraints, the 100 V linefeed classification, hook-state behavior, and regional signaling requirements before using the part outside a standard CPE topology.
Recomendado
Customer Premises Equipment Line Interface
The SI3201-FS is specifically intended for customer premise equipment requiring a complete analog telephone interface. It integrates programmable CMOS line control, a codec interface, dynamic battery output, and balanced ringing into a 16-SOIC package. This consolidation is valuable in CPE products where board area and software-configurable line behavior are important. The verified 100 V linefeed description and 90 VPK balanced-ringing capability determine much of the external circuit and PCB compliance work. A production design should use the manufacturer reference circuit and verify the host software, line protection, external component values, and operational limits against the applicable customer and regional telephone specifications.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para SI3201-FS — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | SI3201-GS | SI3201-GSR |
|---|---|---|---|
| Package | 16-SOIC | 16-SOIC - same package family | 16-SOIC - same package family |
| Brand | Skyworks Solutions, Inc. | Silicon Labs | Silicon Labs |
| Device Type | 100 V linefeed interface IC for Si321x | 1-channel SLIC | 1-channel SLIC |
| Supply Voltage | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V |
| Current | 41 mA | 41 mA | 41 mA |
| Channel Count | 1 channel | 1 channel | 1 channel |
Principais diferenciais
- Documented 100 V linefeed classification (vs SI3201-GS)
- Programmable balanced ringing to 90 VPK (vs SI3201-GSR)
- Integrated dynamic battery supply (vs SI3201-GS)
- Si321x-oriented interface description (vs SI3201-GSR)
Notas de projeto
The SI3201-FS combines a 100 V linefeed interface with an integrated dynamic battery supply and programmable ringing. Treat the line-side network as a high-voltage, high-current functional block rather than a conventional low-voltage logic rail. Use the manufacturer's reference circuit for protection and external components, verify the maximum battery and ringing conditions in the operating region, and confirm that the host power supply can support the linefeed and codec requirements without excessive ripple.
The 90 VPK balanced-ringing capability requires deliberate high-voltage PCB layout. Maintain adequate copper and component spacing around linefeed, battery, and ringing nets; keep sensitive codec traces away from those nets; and place protection or filtering components at the line entry using the manufacturer's reference placement. Do not derive creepage, clearance, or isolation distances from generic assumptions because the final requirements depend on the applicable telephone-network category and board construction.
The verified ringing specification is conditional: up to 90 VPK applies to 5 REN at 4 kft and 3 REN at 8 kft. Do not assume that output amplitude remains constant at every REN, line length, battery condition, or temperature. Also verify whether the selected board version requires an exposed pad connection. The available distributor information confirms a 16-SOIC package but does not provide the complete pad and pin-function table, so both must be checked in the manufacturer datasheet before PCB release.
Program the codec interface and linefeed behavior only through a supported ProSLIC configuration for the exact device revision. Confirm codec clocking, frame format, hook-state debounce, ring cadence, battery control, and initialization order in the host firmware. This is especially important when comparing SI3201-FS with SI3201-GS or SI3201-GSR, because the supplied comparison notes similar functionality but also identify differing electrical characteristics.
Informações de conformidade
The Mouser listing identifies SI3201-FS as lead-free. RoHS, REACH, halogen-free, conflict-minerals, and automotive qualification status were not explicitly stated in the supplied data.