SI3201-FS 100V Linefeed Interface IC | Skyworks | 16-SOIC
料号： SI3201-FS ✓ 量产中SI3201-FS 概述
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.
直接替换替代料： SI3201-FS ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： SI3201-FS （相同外形与封装尺寸） ——差异在于 Package, Battery Supply, Channel Count, Device Type.
SI3201-GS
✅ 直接替换联系询价
查看数据手册 →SI3201-GSR
✅ 直接替换📋 参考替代料（不在目录中）
SI3201-FS 规格参数
| 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 |
| 电源电压 | 3.3 V / 5 V |
| 静态电流 | 41 mA |
| 封装 | 16-SOIC |
| Package Width | 3.90 mm |
| 安装类型 | Surface mount |
| Lead Status | Lead-free |
| Manufacturer Description | 100 V linefeed interface IC for Si321x |
SI3201-FS 3.90 mm 引脚配置指南
SI3201-FS（3.90 mm 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： SI3201-FS.
请参阅 数据手册 以查看完整引脚配置。
典型应用
SI3201-FS 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
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推荐产品汇总
工程参考数据： SI3201-FS ——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 | 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 |
关键差异点
- Documented 100 V linefeed classification （对比 SI3201-GS)
- Programmable balanced ringing to 90 VPK （对比 SI3201-GSR)
- Integrated dynamic battery supply （对比 SI3201-GS)
- Si321x-oriented interface description （对比 SI3201-GSR)
设计说明
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.
合规信息
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.