SI3018-KS - Telecom DAA Interface IC | Skyworks Solutions
料号： SI3018-KS ✗ 停产SI3018-KS 概述
A Direct Access Arrangement is a telecom interface function that provides the physical and signaling interface between a digital voice system and a subscriber line. In this product category, the DAA IC handles the line-side interface duties required by telecommunications equipment. The SI3018-KS is consequently positioned within the broader hierarchy of integrated circuits, interface ICs, telecom interface ICs, and voice-access devices.
The key verified features of SI3018-KS are its single-circuit DAA architecture, 16-SOIC surface-mount package, 3 V to 3.6 V supply range, 8.5 mA operating current, and parallel, SPI, and UART interface support. These characteristics make the component relevant to designs requiring a compact telecom line interface with multiple digital host-interface options. The Si3018 family documentation also identifies related line-side devices, including the Si3019 and Si3010, within the same broader telecom-interface product family.
The SI3018-KS is useful when integrating a voice line card, voice gateway, digital loop carrier endpoint, or other telecom access circuit. Its supply range is compatible with common 3.3 V communication-system rails, while the SOIC package supports conventional surface-mount assembly. The selectable interface methods provide flexibility when connecting the DAA to a host controller, codec, or system bus.
Because the available distributor data does not provide the complete electrical limits, timing characteristics, line-side impedance options, or detailed pin assignments, the manufacturer datasheet should be consulted before layout or production release. In particular, verify the external line-interface network, bypass-capacitor requirements, clocking, reset behavior, and all absolute maximum ratings for the specific revision.
This page consolidates the verified manufacturer-family and distributor information for SI3018-KS, adds application guidance, comparison context, and design cautions, and distinguishes documented facts from parameters that still require confirmation from the datasheet.
直接替换替代料： SI3018-KS ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
该产品暂无直接替换替代料。
请求替代料SI3018-KS 规格参数
| Device Type | Telecom Direct Access Arrangement (DAA) interface IC |
| Circuit Count | 1 circuit |
| Supply Voltage Range | 3 V to 3.6 V |
| Operating Current | 8.5 mA |
| 封装 | 16-SOIC |
| 安装类型 | Surface mount |
| Parallel Interface | Supported |
| SPI Interface | Supported |
| UART Interface | Supported |
| Product Family | Si3050 Global Serial Interface DAA |
| 功能 | Line-side telecom DAA interface |
| Termination Count | 16 terminations |
| AC Termination Impedance | 16 configurations referenced in Si3056 family datasheet |
| RoHS 状态 | unknown |
| REACH Status | unknown |
| Automotive AEC-Q100 Status | not_applicable |
| Lead-Free Status | unknown |
| Halogen-Free Status | unknown |
SI3018-KS 16-soic 引脚配置指南
SI3018-KS（16-soic 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： SI3018-KS.
请参阅 数据手册 以查看完整引脚配置。
典型应用
SI3018-KS 适用于 6 应用s: Digital Voice Line Card, Voice Gateway Equipment, Digital Loop Carrier Endpoint, Industrial Telemetry Interface, VoIP Access Circuit, Legacy Telephone Interface.
Digital Voice Line Card
The SI3018-KS fits a digital voice line card because it combines a dedicated telecom DAA function with a 3 V to 3.6 V supply range, 8.5 mA operating current, and a 16-SOIC package. The available parallel, SPI, and UART interfaces allow the line-card controller to be selected according to the existing system architecture. In a line card, the device can provide the line-side interface path for a voice codec or digital access subsystem. The compact SOIC package also simplifies routing compared with a larger through-hole implementation. Before layout, verify the complete pinout, line termination network, interface timing, bypass requirements, and absolute maximum ratings in the manufacturer datasheet.
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Voice Gateway Equipment
The SI3018-KS is appropriate for voice-gateway line cards that need a compact interface between a digital voice processor and a telecom line. Its three supported host-interface methods provide design flexibility when a gateway uses parallel glue logic, an SPI-connected controller, or a UART-based supervisory processor. The 3.3 V-compatible supply range can align with the processor rail, reducing the number of local supply conversions, while the 16-SOIC package supports standard surface-mount assembly. The 8.5 mA operating current provides a documented baseline for power-budget work. Engineers should still verify signal levels, clocking, reset requirements, termination behavior, and exact pin assignments against the Si3018 family datasheet.
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Digital Loop Carrier Endpoint
A digital loop carrier endpoint can use the SI3018-KS when its line-side requirements align with the Si3018 AC termination configuration and the board needs parallel, SPI, or UART host access. The single-circuit DAA implementation consolidates the telecom interface function into one 16-SOIC device, while the 3 V to 3.6 V operating range suits conventional 3.3 V access hardware. Parallel connectivity may benefit designs with straightforward timing and abundant I/O, whereas SPI or UART can reduce host-pin usage and simplify firmware integration. Because the available data does not establish every termination, timing, and line-drive parameter, production designs should use the manufacturer datasheet for component selection, PCB partitioning, and production test limits.
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Industrial Telemetry Interface
The SI3018-KS can be evaluated for industrial telemetry equipment that includes a telecom line interface alongside a digital control processor. Its 8.5 mA operating current is suitable for power-constrained embedded systems, and the 3 V to 3.6 V supply range supports 3.3 V logic. The SOIC package is convenient for automated assembly, while SPI or UART connectivity can share the embedded controller with monitoring and configuration functions. A parallel interface remains available for designs requiring deterministic access or legacy peripheral mapping. The major engineering checks are the external line network, surge exposure, isolation strategy, grounding strategy, and exact operating limits. Those details are not fully present in the supplied verified data and must be established from the datasheet.
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VoIP Access Circuit
The SI3018-KS is relevant to VoIP access circuits that terminate an analog subscriber line while a host processor manages voice conversion and call control. The DAA function addresses the line-side interface, and parallel, SPI, and UART options make the device adaptable to several host architectures. Its 3 V to 3.6 V operating range can simplify integration with a 3.3 V codec and processor rail, while the 16-SOIC package keeps the footprint compact. In a VoIP design, selection must match the required AC termination impedance and line-side behavior, not merely the package. Validate ringing, impedance, line current, timing, and test-point requirements against the current manufacturer documentation before schematic release.
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Legacy Telephone Interface
The SI3018-KS can serve as the telecom interface in legacy telephone equipment that must bridge a digital controller with an analog line. The dedicated DAA function and selectable host interfaces support both modern microcontroller designs and systems using parallel peripheral logic. The 3 V to 3.6 V range aligns with many embedded platforms, while the SOIC format supports conventional pick-and-place and reflow processes. For replacement work, engineers should not assume that a related Si3019, Si3010, SI3018-GS, or another family member is interchangeable: the family datasheet describes different termination configurations. Confirm package pins, termination requirements, supply limits, and firmware-visible behavior before approving any substitution.
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推荐产品汇总
工程参考数据： SI3018-KS ——对比、设计指导和合规信息。
选型指南
设计说明
Use the complete manufacturer package drawing and pin table before routing the SI3018-KS. The verified data establishes a 16-SOIC package but does not provide pin names or numbering, so do not infer connections from neighboring Si3018-family parts. Keep the DAA line-side network, supply decoupling, and digital host interface in the placement plan recommended by the datasheet, and provide accessible test points for production verification.
The documented operating current is 8.5 mA with a 3 V to 3.6 V supply range. Use those values for a preliminary supply-budget estimate, while obtaining quiescent-current behavior, operating-current conditions, and power-consumption limits from the manufacturer datasheet. Confirm the local 3.3 V rail has adequate transient margin and that bypass placement follows the recommended layout.
Do not treat related devices as drop-in equivalents based only on family naming. The supplied family documentation distinguishes SI3018, SI3019, and SI3010 by AC termination configuration, and the cross-reference search does not establish pin compatibility. A valid replacement must match the package, pinout, interface timing, termination behavior, supply range, and lifecycle requirements.
Separate the analog or line-side DAA region from digital host-interface routing to reduce coupling between telecom line signals and SPI, UART, or parallel control signals. Keep switching-regulator loops and high-current line-drive paths away from sensitive interface areas. Grounding and isolation strategy should follow the manufacturer reference layout because the supplied data does not specify creepage, clearance, or isolation ratings.
合规信息
The supplied web data does not provide explicit RoHS, REACH, lead-free, halogen-free, or conflict-minerals statements for SI3018-KS. AEC-Q100 is marked not applicable because this is a telecom interface IC and no automotive qualification is stated.