SI3201-KS - Programmable CMOS SLIC with Ringing | Silicon Labs
N.º de pieza: SI3201-KS ✓ ActivoSI3201-KS Descripción general
A SLIC, or subscriber line interface circuit, is an analog telephone-interface component that connects a central-office telephone line to customer equipment. It belongs to the telephone-interface IC hierarchy, where it bridges a high-voltage analog line and low-voltage digital or analog circuitry. The SI3201-KS is specifically associated with ProSLIC-type customer premises equipment and provides a programmable alternative to discrete linefeed networks.
Principal features include software programmability, a codec interface, internal balanced ringing generation up to 90 VPK, and an integrated battery supply with dynamic voltage output. Distributor listings describe the device as a 100 V linefeed interface for Si321x applications. The 16-SOIC package measures 0.154 inch, or 3.90 mm, in width and uses an exposed-pad thermal and construction option.
The device combines high-voltage analog line-interface functions with low-voltage CMOS control logic. Its programmable architecture allows ringing and line parameters to be configured through the associated control system rather than relying only on fixed passive networks. The exact supply voltages, DC feed characteristics, codec interfaces, temperature range, and absolute maximum ratings are not fully exposed in the supplied search records and should therefore be confirmed in the manufacturer datasheet.
Typical applications include analog telephones, voice-over-IP terminals, DSL or broadband customer premises equipment, analog fax machines, voice gateways, and other carrier-facing or analog telephone adapters. The SI3201-KS is most appropriate where an integrated, programmable SLIC can simplify the line-interface section and reduce discrete external circuitry.
The principal design consideration is the high-voltage line and ringing interface. PCB creepage, isolation, component spacing, surge protection, and thermal performance require careful attention even though the IC itself is a low-voltage CMOS device. Designers should also confirm the exposed-pad land pattern, required external components, and codec compatibility against the exact manufacturer datasheet before layout release.
Alternativas directas para SI3201-KS — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con SI3201-KS (mismo factor de forma y huella) — difiere en Device Type, Package.
SI3201-FS
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Ver hoja de datos →SI3201-KS Especificaciones
| Device Type | Programmable CMOS SLIC with codec interface, ringing and battery-voltage generation |
| Application Category | Customer premises equipment (CPE) |
| Linefeed Rating | 100 V |
| Maximum Balanced Ringing Voltage | 90 VPK |
| Ringing Load at 4 kft | 5 REN |
| Ringing Load at 8 kft | 3 REN |
| Ringing Control | Software-programmable internal balanced ringing |
| Codec Interface | Software-programmable codec interface |
| Battery Supply | Integrated battery supply with dynamic voltage output |
| Process Technology | Low-voltage CMOS |
| Encapsulado | 16-SOIC (0.154 inch, 3.90 mm width) with exposed pad |
| Package Body Width | 3.90 mm |
| Tipo de montaje | Surface mount |
Guía de configuración de pines de SI3201-KS 3.90 mm
Configuración de pines para SI3201-KS (encapsulado 3.90 mm). La numeración de pines, las funciones y los diagramas de conexión se definen en la hoja de datos del fabricante. Consúltela para conocer el footprint exacto y las directrices de soldadura.
No hay datos detallados de patillaje disponibles para SI3201-KS.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
SI3201-KS es adecuado para 6 aplicacións: Analog VoIP Phone Adapters, Broadband CPE with Analog FXS, Analog Voice Gateways, Analog Fax and Legacy Terminal Support, Industrial Telephone and Voice Terminal Equipment, Customer Premises Equipment Platforms.
Analog VoIP Phone Adapters
The SI3201-KS fits an analog VoIP adapter because it combines a codec interface with programmable subscriber-line ringing and integrated dynamic battery generation in one low-voltage CMOS device. Its verified 90 VPK balanced ringing capability supports 5 REN at 4 kft or 3 REN at 8 kft, allowing a terminal to reproduce conventional analog telephone behavior. Compared with discrete linefeed networks, the programmable implementation can reduce fixed-component count and make ringing, battery, and codec behavior configurable. The design must still include the appropriate telephone magnetics or linefeed network, surge protection, separation from user-accessible circuits, and an exposed-pad land pattern matching the 16-SOIC datasheet drawing.
Recomendado
Broadband CPE with Analog FXS
The SI3201-KS is applicable to broadband customer premises equipment requiring an analog FXS port. Its codec interface allows the CPE processor to control voice activity, while the integrated battery supply and programmable balanced ringing support legacy analog handsets and fax equipment. The 100 V linefeed classification and 90 VPK maximum ringing voltage are the key alignment points for this use. Designers should account for the reduced 3 REN capability when longer eight-kilofoot lines are present and verify external protection against the exact datasheet limits. Firmware and configuration support must also match the selected Si321x/ProSLIC platform before production deployment.
Recomendado
Analog Voice Gateways
An analog voice gateway can use the SI3201-KS to terminate legacy telephone lines while providing a digital or codec-based path into a converged voice system. The integrated SLIC avoids a separate fixed ringing and battery-supply network, while software programming permits adjustment of line behavior. Its verified 90 VPK balanced ring generation supports 5 REN at 4 kft, making it suitable for standard short analog loops when the external line network and protection are correctly designed. Practical implementations must preserve adequate creepage and clearance at the line interface, use the exposed-pad thermal land pattern, and confirm codec timing and control software support for the specific gateway architecture.
Recomendado
Analog Fax and Legacy Terminal Support
The SI3201-KS can support legacy fax machines and other analog terminals that require on-hook voltage, ringing, and battery feed from an FXS interface. The integrated dynamic battery supply and programmable balanced ringing provide the essential line-side functions in a compact 16-SOIC implementation. Its capability is specifically tied to 5 REN at 4 kft or 3 REN at 8 kft, so design engineers should not interpret it as an unrestricted high-REN linefeed. A production design also needs appropriate line surge protection, overvoltage control, and a verified telephone-network interface. The supplied record does not state the exact battery range, so operating limits must come directly from the manufacturer datasheet.
Recomendado
Industrial Telephone and Voice Terminal Equipment
The SI3201-KS can be used in industrial telephone equipment where a programmable analog line interface simplifies product variation. Software control of ringing and battery behavior allows one hardware platform to serve multiple telephone configurations without relying entirely on fixed analog networks. The 100 V linefeed role and 90 VPK balanced ringing output align with conventional analog telephone circuits, while the integrated codec interface supports digital voice processing. Designers must account for long cable-loop effects, surge events, and the reduced 3 REN specification at 8 kft. Industrial temperature, grounding, isolation, and regulatory requirements should be checked against the complete manufacturer datasheet because those details are not present in the supplied records.
Recomendado
Customer Premises Equipment Platforms
The SI3201-KS was created for customer premises equipment, making it suitable for integrated gateways and terminals that need a complete analog telephone interface. Its low-voltage CMOS architecture combines the codec interface, ringing generator, and dynamic battery supply, reducing the number of separate linefeed functions. The internal balanced ringing specification of 90 VPK directly supports classic telephone signaling, while 100 V linefeed capability identifies the intended operating class. Implementation should follow the exact reference design and exposed-pad layout, and the associated firmware must provide compatible control of the Si321x device. This integration advantage must be balanced against the need for external surge protection, line magnetics, and careful high-voltage layout.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para SI3201-KS — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | SI3201-FS |
|---|---|---|
| Package | 16-SOIC with exposed pad | 16-SOIC |
| Brand | Silicon Labs | Silicon Labs |
| Device Function | Programmable CMOS SLIC with codec interface, ringing and battery-voltage generation | 100 V linefeed interface for Si321x |
| Linefeed Voltage | 100 V | 100 V |
| Codec Interface | Software-programmable codec interface | Si321x linefeed interface |
Diferenciadores clave
- Verified 100 V linefeed operation (frente a SI3201-FS)
- Documented balanced ringing capability (frente a SI3201-FS)
- Integrated dynamic battery generation (frente a SI3201-FS)
Notas de diseño
Treat the subscriber-line side as a high-voltage, user-accessible circuit even though the SI3201-KS itself is a low-voltage CMOS IC. Use the manufacturer's land pattern and keep the exposed-pad thermal land electrically connected as specified. The supplied records do not provide exact clearance or creepage dimensions, so spacing, slotting, coating, and insulation must be derived from the manufacturer drawing and the applicable telephone-network requirements rather than estimated from the 90 VPK ringing figure.
The integrated dynamic battery supply reduces the need for a fixed battery-generation network, but external linefeed and protection components still determine the usable DC feed and surge behavior. Check the final line voltage, on-hook current, off-hook impedance, and battery droop under worst-case REN loading. Do not infer these values from the 5 REN at 4 kft and 3 REN at 8 kft ringing statements; use the electrical characteristics and reference design in the manufacturer datasheet.
The SI3201-KS uses a 16-SOIC package with an exposed pad. Provide the recommended copper area, solder geometry, and thermal-via arrangement so heat can leave the device while maintaining the package outline and solder-mask rules. Confirm whether the exposed pad is electrically tied to ground, battery, or another node in the exact datasheet; the supplied records identify the pad but do not state its connection, so making that assumption would risk an incorrect board connection.
Do not treat a same-family suffix as proof of interchangeability without comparing every pin and electrical limit. SI3201-FS is the only verified substitute candidate, but the available listing does not expose its complete pinout, exposed-pad details, software compatibility, or full ringing specifications. Confirm those items in the manufacturer documents before treating the two orderable MPNs as a drop-in replacement.
Información de cumplimiento
The supplied Verified Web Data does not contain product-specific RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations. AEC-Q100 is not applicable to this telecom interface IC based on the supplied product category and evidence.
