SI3216-KT 38-TSSOP Wideband SLIC Codec | Silicon Labs
料号： SI3216-KT ✓ 量产中SI3216-KT 概述
A Subscriber Line Interface Concept, or SLIC, is a semiconductor category that combines analog telephone-line interface functions with digital codec processing. In the power-management and communications hierarchy, the SI3216-KT belongs to the SLIC and codec class within interface ICs. Its purpose is to bridge a conventional analog telephone line and a digital voice-processing system, allowing a VoIP endpoint to support voice-band or wideband conversations while the host handles packetization and call control.
The SI3216-KT combines wideband and narrowband codec modes in one device. The wideband path covers 50 Hz to 7.0 kHz, while the narrowband path covers 200 Hz to 3.4 kHz. According to the Silicon Labs Si3216 datasheet, it is a low-voltage CMOS device intended for enhanced-voice VoIP applications. Its listed operating supply range of 3.13 V to 5.25 V supports both 3.3 V and 5 V system rails, subject to the detailed limits and tolerances stated by the manufacturer.
The component includes GCI, PCM, and SPI interfaces, giving a system designer several ways to connect the codec to external controller or line-interface circuitry. The verified specifications identify one codec circuit, 88 mA supply current, 700 mW power, a 0°C to 70°C operating range, and a 60 dB signal parameter in a 38-pin TSSOP package. Exact timing, line-driver current, gain distribution, hook-state thresholds, and absolute maximum limits must be taken from the manufacturer datasheet before final circuit design.
Typical uses include VoIP analog telephone adapters, voice terminals, residential gateways, digital phone systems, and embedded voice processors. The wideband mode is useful when the network and signal chain can support a 16 kHz sampling rate, while narrowband mode preserves compatibility with conventional 200 Hz to 3.4 kHz telephony speech. The same-package SI3216M-KT and SI3216-FT are relevant cross-reference candidates for procurement and board-level planning, subject to suffix-specific qualification checks.
The primary design consideration is the telephone line interface around the IC. A production design must follow the manufacturer’s recommended external network, protection, filtering, and component-selection circuits rather than treating the SI3216-KT as a standalone codec. PCB placement should minimize analog and digital coupling, provide appropriate ground-plane continuity, and place required bypass and interface components close to their associated pins.
This product page consolidates the device’s electrical limits, package identity, operating modes, searchable specifications, comparison candidates, and application guidance. It also distinguishes verified SI3216-KT attributes from parameters that still require direct consultation of the manufacturer datasheet, helping engineers move from component identification to qualified design review without relying on generic SLIC assumptions.
直接替换替代料： SI3216-KT ——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： SI3216-KT （相同外形与封装尺寸） ——差异在于 Product Type.
SI3216M-KT
✅ 直接替换📋 参考替代料（不在目录中）
SI3216-FT
✅ 直接替换联系询价
SI3216-KT 规格参数
| Product Type | ProSLIC Subscriber Line Interface Concept and audio codec |
| Number of Codec Circuits | 1 |
| Supply Voltage Range | 3.13 V to 5.25 V |
| Nominal Supply Voltage Support | 3.3 V or 5 V |
| 电源电流 | 88 mA |
| Power Dissipation | 700 mW |
| Wideband Audio Frequency Range | 50 Hz to 7.0 kHz |
| Narrowband Audio Frequency Range | 200 Hz to 3.4 kHz |
| Wideband Sampling Rate | 16 kHz |
| Codec Resolution | 16 bit |
| Signal Parameter | 60 dB |
| 接口类型 | GCI, PCM, and SPI |
| 工作温度范围 | 0°C to 70°C |
| 封装 | 38-pin TSSOP |
| 安装类型 | Surface mount |
| Process Technology | Low-voltage CMOS |
| RoHS 状态 | Compliant |
| Lead-Free Status | Lead free |
SI3216-KT 38-pin tssop 引脚配置指南
SI3216-KT（38-pin tssop 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： SI3216-KT.
请参阅 数据手册 以查看完整引脚配置。
典型应用
SI3216-KT 适用于 6 应用s: VoIP Analog Telephone Adapter, Residential Voice Gateway, Business VoIP Telephone, VoIP Voice Processor Module, Digital Phone Terminal, Voice-over-USB Access Device.
VoIP Analog Telephone Adapter
The SI3216-KT fits an analog telephone adapter because it combines a Subscriber Line Interface Concept with a selectable wideband or narrowband codec in one 38-pin TSSOP. According to the Silicon Labs Si3216 datasheet, wideband mode covers 50 Hz to 7.0 kHz with 16-bit, 16 kHz sampling, while narrowband mode covers 200 Hz to 3.4 kHz for conventional telephony speech. Its 3.13 V to 5.25 V supply range accommodates nominal 3.3 V and 5 V designs. The IC interfaces to the line network through recommended external protection and filtering, while GCI, PCM, and SPI connectivity supports the host-side voice architecture.
推荐
Residential Voice Gateway
The SI3216-KT is suitable for a residential voice gateway that must connect a PSTN-style analog line to digital packet processing. Its single-channel ProSLIC architecture supports both wideband operation from 50 Hz to 7.0 kHz and narrowband operation from 200 Hz to 3.4 kHz, allowing the gateway to match codec mode to the active call service. The listed 88 mA supply current and 700 mW power establish the core device budget, while the 38-pin TSSOP keeps the interface compact. The host processor still handles call control and packetization, and the board must implement the manufacturer’s recommended line-network and surge-protection circuits.
推荐
Business VoIP Telephone
The SI3216-KT fits a desktop or business VoIP telephone that supports conventional analog handsets while offering an upgrade path to wideband conversation audio. The wideband codec supports 16-bit audio at 16 kHz over 50 Hz to 7.0 kHz, whereas narrowband mode remains available over 200 Hz to 3.4 kHz for legacy endpoints. Its GCI, PCM, and SPI interfaces provide options for connecting the telephone controller and surrounding digital circuitry. A practical implementation must follow the Si3216 application guidance for line termination, hook detection, ringing, and audio coupling rather than treating the codec as a general-purpose converter.
推荐
VoIP Voice Processor Module
The SI3216-KT can provide the analog-line and codec front end for a dedicated VoIP voice processor module. Its single codec circuit, low-voltage CMOS implementation, and GCI, PCM, and SPI interfaces align with systems that separate real-time voice processing from general-purpose application logic. The component supports 50 Hz to 7.0 kHz wideband audio with 16-bit, 16 kHz sampling, plus 200 Hz to 3.4 kHz narrowband operation. Designers should budget for the listed 88 mA supply current, preserve a low-impedance ground path, and place the required bypass and signal-conditioning components close to the package.
推荐
Digital Phone Terminal
The SI3216-KT is appropriate for a digital phone terminal that must bridge an analog telephone line and digital voice-control electronics. It supports dual codec modes, allowing wideband service to use 50 Hz to 7.0 kHz at 16-bit and 16 kHz sampling while conventional calls remain compatible with the 200 Hz to 3.4 kHz narrowband range. The 38-pin TSSOP package supports compact surface-mount construction, and the 3.13 V to 5.25 V operating range supports common telecom supply rails. Production qualification must include verification of line states, ringing behavior, codec timing, and the external protection network specified by the manufacturer.
推荐
Voice-over-USB Access Device
The SI3216-KT can serve the analog line side of a Voice-over-USB access device while another controller manages USB audio transport. Its PCM interface supports a conventional digital audio connection, while the ProSLIC section handles the analog telephone line and selectable wideband or narrowband codec operation. Wideband mode provides 16-bit samples at 16 kHz across 50 Hz to 7.0 kHz; narrowband mode covers 200 Hz to 3.4 kHz. The single-channel device and 38-pin TSSOP simplify routing on a compact board, but designers must isolate line-side energy, apply the specified external network, and validate hook and ringing behavior.
推荐
推荐产品汇总
工程参考数据： SI3216-KT ——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 | SI3216M-KT | SI3216-FT |
|---|---|---|---|
| Package | 38-pin TSSOP | 38-pin TSSOP - same | 38-pin TSSOP - same |
| Brand | Silicon Labs | Silicon Labs | Silicon Labs |
| Product Category | Telecom IC SLIC and codec | SI3216-family telecom interface IC | SLIC and codec interface IC |
| Mounting Style | Surface mount | Surface mount | Surface mount |
关键差异点
- Dual-mode audio bandwidth in a single ProSLIC （对比 SI3216-FT)
- 16-bit wideband sampling （对比 SI3216M-KT)
- Three documented digital interface choices （对比 SI3216-FT)
设计说明
Use the manufacturer’s Si3216 reference layout as the authority for the 38-pin TSSOP land pattern and pin assignment. Keep the analog telephone-network components close to their corresponding IC pins, maintain a continuous ground reference beneath the device where the recommended layout permits, and avoid routing high-energy ringing or line currents through digital codec regions. The available product information confirms the package and interfaces but does not reproduce the complete pin map, so validate every net against the datasheet before PCB release.
Budget the SI3216-KT for 88 mA supply current and 700 mW listed power when designing the supporting rails and thermal path. Estimated power dissipation must be recalculated from the actual supply voltage and operating-mode current because the catalog values may describe a specific test condition. Place the required bypass capacitors next to their supply and ground pins, observe permitted operating and absolute-maximum voltages, and provide local regulation or filtering if the telephone line environment causes supply disturbance.
Do not assume that a shared 38-pin TSSOP footprint proves that any Si3216 suffix is interchangeable. Before substituting SI3216M-KT or SI3216-FT, compare the pin-description table, hook-state behavior, ringer and tone functions, clock requirements, codec data format, electrical limits, temperature grade, and recommended external values. Also verify that the selected suffix meets RoHS and lead-free construction requirements for the finished equipment rather than relying only on the family name.
Separate the PCM, SPI, GCI, and telephone-network paths according to the manufacturer’s application circuit. Use short return paths and a stable ground reference to reduce codec noise and digital feedback, while preserving the filtering and isolation required by the line interface. If wideband mode is enabled, test the 50 Hz to 7.0 kHz audio path for noise, distortion, and clock-related artifacts under the system’s worst-case line and supply conditions.
合规信息
The product listing identifies RoHS and lead-free status. REACH, halogen-free status, and conflict-minerals compliance are not stated in the verified information.
