SI3018-KT - V.92 Global Serial Interface DAA | Skyworks
N.º de pieza: SI3018-KT ✗ Fin de vidaSI3018-KT Descripción general
A direct access arrangement is an interface integrated circuit that combines codec, line-driver, line-receiver, hybrid, and telephone-line termination functions that otherwise require several discrete or separate IC blocks. The DAA category belongs to the broader telecom interface IC hierarchy, which connects host digital signals to analog transmission channels. The SI3018-KT is intended for voice and data applications requiring a compact implementation of a V.92 line-side interface.
The principal documented features include V.92 data-format support, an 80 dB dynamic range for the TX/RX paths, selectable AC and DC termination, a configurable ring-detect threshold, ringer-impedance support, an integrated codec, and an integrated 2-wire to 4-wire hybrid. Combining these functions reduces the number of external line-interface components and simplifies telephone-line equipment while preserving the separation between the digital host interface and the analog PSTN line.
The SI3018-KT architecture places the codec and telephone-line interface functions in one IC rather than requiring separate codec, hybrid, and termination devices. This integration is particularly useful where board area is constrained, such as modems, voice gateways, terminal adapters, and compact customer-premises equipment. The 16-TSSOP package is supplied in tube packaging according to the available distributor specification, and the reported package width is 4.40 mm.
Typical application areas include central-office line-card equipment, remote terminal units, voice-over-data gateways, fax and modem interfaces, and other telephone-network access products. In each case, the device can serve as the line-side interface between a digital processor and an analog telephone line while providing integrated signaling, codec, and hybrid functions.
The primary design consideration is exact interface verification. Designers should confirm the exposed pad requirements, supply rails, digital host interface, termination configuration, ring-detection thresholds, and hook-state behavior against the manufacturer datasheet before layout release. PCB signal integrity is particularly important on analog line and hybrid networks, so the layout should preserve the manufacturer-recommended component placement and grounding topology.
This product page consolidates the verified distributor specifications, official Skyworks family-document references, commercial availability information, interface-function details, and practical design cautions. It also distinguishes documented SI3018-KT characteristics from unreported voltage, current, temperature, and absolute-maximum data so engineers can make procurement and design decisions without treating unverified figures as guaranteed specifications.
Alternativas directas para SI3018-KT — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
No hay alternativas directas disponibles para este producto.
Solicitar alternativasSI3018-KT Especificaciones
| Product Type | Global Serial Interface Direct Access Arrangement (DAA) |
| Supported Data Format | V.92 |
| TX/RX Path Dynamic Range | 80 dB |
| Package Type | 16-TSSOP |
| Package Width | 0.173 inch (4.40 mm) |
| Packaging | Tube |
| AC Termination | Integrated |
| DC Termination | Integrated |
| Ring Detection | Integrated with adjustable ring-detect threshold |
| Ringer Impedance | Integrated support |
| Codec | Integrated |
| Telephone Hybrid | Integrated 2-wire to 4-wire hybrid |
| Tipo de montaje | Surface Mount |
| Lead-Free Status | Contains Lead |
| Estado RoHS | RoHS Non-Compliant |
Guía de configuración de pines de SI3018-KT 0.173 inch (4.40 mm)
Configuración de pines para SI3018-KT (encapsulado 0.173 inch (4.40 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 SI3018-KT.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
SI3018-KT es adecuado para 6 aplicacións: V.92 Data Modem Line Interface, Voice-over-Data Gateway, Remote Terminal Unit, Fax and Telephony Terminal, Central Office Line-Card Equipment, Compact Customer Premises Equipment.
V.92 Data Modem Line Interface
The SI3018-KT fits a V.92 modem line card because it combines the required 80 dB TX/RX dynamic range with an integrated codec, AC and DC termination, and a 2-wire to 4-wire hybrid. Placing these functions in one 16-TSSOP device reduces the number of separate line-interface blocks and conserves board area. Its 4.40 mm package width is useful in compact modems, but the designer must still verify host-interface timing, line-feed values, termination selection, and regional telephone-network requirements. The available evidence does not define supply voltage or operating temperature, so those limits must be confirmed from the manufacturer datasheet before component selection is finalized.
Recomendado
Voice-over-Data Gateway
The SI3018-KT is suitable for a voice-over-data gateway requiring an analog telephone-line connection beside a digital host processor. Its integrated codec and 2-wire to 4-wire hybrid reduce the number of conversions and isolation stages that must be managed at board level, while the 80 dB TX/RX dynamic range provides useful signal-range margin. The 16-TSSOP footprint also limits board width compared with larger analog-interface packages. For deployment, however, engineers must validate hook-state signaling, ring detection, termination configuration, echo performance, and the applicable local network rules because those detailed electrical values were not included in the verified excerpts.
Recomendado
Remote Terminal Unit
A remote terminal unit can use the SI3018-KT to combine the analog line-facing functions needed for a telephone subscriber connection with a compact digital backhaul processor. The integrated codec, AC and DC termination, ring detector, and hybrid allow the design to avoid several discrete blocks, which can help when board area is constrained. The documented 80 dB TX/RX dynamic range is the principal signal-path figure available from the verified data. Deployment still requires confirmation of line-feed circuitry, surge exposure, isolation strategy, hook timing, and regional approval because no verified voltage, current, or temperature limits were supplied.
Recomendado
Fax and Telephony Terminal
The SI3018-KT fits fax and telephony terminals that require a V.92-compatible line-side path and compact analog-interface integration. Its integrated codec and hybrid simplify the signal chain, while separate AC and DC termination functions provide the line-interface controls needed in telecom equipment. The verified 80 dB TX/RX dynamic range supports the principal signal-range requirement, and the 16-TSSOP package helps minimize board width. The product must not be released into a regulated telephone design without checking the official datasheet for supply limits, line-feed configuration, ring thresholds, and the exact behavior of every terminal.
Recomendado
Central Office Line-Card Equipment
The SI3018-KT can serve as a compact line-side interface element in central-office line-card equipment, where integrating the codec, hybrid, termination, and ring detection reduces component count around each subscriber channel. The 80 dB TX/RX dynamic range provides a documented basis for initial signal-path assessment, and the 16-TSSOP format supports dense board layouts. Production use still requires system-level verification of line impedance, on-hook and off-hook behavior, ringer detection, power integrity, and protection against line transients. Those requirements may vary by network operator, so the family datasheet and deployment specifications are essential.
Recomendado
Compact Customer Premises Equipment
The SI3018-KT is appropriate for compact customer-premises equipment where a 4.40 mm-wide, 16-TSSOP line interface can replace separate codec, hybrid, termination, and ring-detection circuitry. That integration can lower assembly complexity while retaining the documented V.92 format and 80 dB TX/RX dynamic range. The package remains a small-outline surface-mount design, so thermal and assembly performance depend on the complete board layout and copper availability. Before schematic and layout release, engineers should obtain the manufacturer pinout, verify exposed-pad handling, establish the required external line network, and confirm that the non-RoHS status is acceptable for the target product.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para SI3018-KT — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | SI3018 | SI3019 | SI3010 |
|---|---|---|---|---|
| Brand | Skyworks Solutions, Inc. | Skyworks Solutions, Inc. | Skyworks Solutions, Inc. | Skyworks Solutions, Inc. |
Diferenciadores clave
- Complete line-side function integration (frente a SI3018-GS)
- Documented V.92 data-format support (frente a SI3019)
- Compact 16-TSSOP implementation (frente a SI3010)
Notas de diseño
Treat the codec, hybrid, and telephone-line network as a high-impedance analog layout region. Place termination, line-feed, protection, and bypass components exactly as directed by the manufacturer reference design; keep switching-node copper and digital return currents away from the TX/RX and hybrid pins. Route the line-side network with short, guarded traces and use a continuous ground reference where the datasheet permits. PCB artwork should be reviewed against the official 16-TSSOP pinout because the verified excerpts did not provide individual terminal assignments.
Decouple the IC according to the manufacturer datasheet once its supply voltage, current, capacitor values, and ESR or X7R requirements are confirmed. Do not infer those values from the 16-TSSOP package or the 80 dB dynamic-range figure. Because telephone equipment can experience line transients, separate the codec supply from exposed line-network nodes and verify that protection, surge current, and supply sequencing cannot force the SI3018-KT beyond its documented operating limits.
The most common design risk is treating a family member or related Si301x device as a drop-in replacement without checking its suffix and pinout. SI3018-KT is specifically documented as a 16-TSSOP tube-packaged, RoHS Non-Compliant part containing lead. Confirm package dimensions, exposed-pad requirements, terminal assignments, termination impedance, ring threshold, hook-state behavior, and temperature grade before ordering a substitute. Do not use SI3018-GS or another family member as a direct replacement based on its name alone.
Validate the analog signal path with the actual line impedance, external termination network, ringer circuit, and protection components. The verified 80 dB dynamic-range value describes the TX/RX paths but does not replace gain, noise, distortion, or frequency-response characterization. During bring-up, measure idle noise, on-hook and off-hook levels, ring detection, hybrid echo, and termination behavior. Compare those measurements with the manufacturer limits and the applicable telephone-network specification.
Información de cumplimiento
The verified distributor specification identifies SI3018-KT as RoHS Non-Compliant and containing lead. REACH, halogen-free, and conflict-minerals information was not supplied. AEC-Q100 qualification is not indicated and is not applicable to the provided data.
