SI3216-GT - Wideband ProSLIC Codec 38-TSSOP | Silicon Labs
料号： SI3216-GT ✓ 量产中SI3216-GT 概述
A ProSLIC, or Subscriber Line Interface Circuit, is an integrated analog telephone interface that connects a voice codec to a customer-premises line. The Si3216 combines line-interface and codec functions within a voice-over-IP access device, placing it in the hierarchy of telecom interface ICs, telephone-line interface circuits, codecs, and system semiconductors. Its wideband mode supports audio from 50 Hz to 7 kHz, while narrowband mode covers 200 Hz to 3.4 kHz.
Key features include dual-mode audio operation, a 16-bit codec operating at a 16 kHz sample rate, and support for GCI, PCM, and SPI interfaces. The stated supply current is 88 mA, the listed power dissipation is 700 mW, and the documented operating-temperature range is -40°C to 85°C. These characteristics suit compact CPE designs requiring one analog line endpoint and digital voice transport.
The Si3216 is designed for Voice-over-IP terminals, voice gateways, access equipment, and other CPE products that benefit from wider speech bandwidth than traditional 3.4 kHz telephony. Its digital interfaces allow the codec section to connect to a system controller or digital signal processor, while its analog telephone interface handles the subscriber line. The multiple interface options also support designs that use either serial packet audio or parallel PCM signaling.
Designers should provide suitable line-interface protection and separation circuitry around the analog telephone section and verify the external network requirements of the target CPE design. Decoupling should follow the manufacturer datasheet recommendations, with short, low-inductance supply connections helping limit susceptibility to switching noise on digital and analog rails.
This page organizes the key SI3216-GT operating limits, interface capabilities, application fit, and verified drop-in candidates. It also provides practical sourcing, package, thermal, and design guidance for engineers evaluating the part in legacy or ongoing voice-access hardware.
Alternative sourcing, lifecycle confirmation, and current lead-time requests can be handled through the Request a Quote form on this page, while the manufacturer datasheet remains the controlling reference for pin connections and application implementation.
直接替换替代料： SI3216-GT ——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-GT （相同外形与封装尺寸） ——差异在于 Operating Temperature Range, Package.
SI3216-BT
✅ 直接替换联系询价
查看数据手册 →SI3216-C-FT
✅ 直接替换📋 参考替代料（不在目录中）
SI3216-GT 规格参数
| Device Type | SLIC and audio codec |
| Technology | CMOS |
| Number of Channels | 1 circuit |
| Supply Voltage Range | 3.13 V to 5.25 V |
| Nominal Supply Voltage | 3.3 V |
| 电源电流 | 88 mA |
| Power Dissipation | 700 mW |
| Digital Interfaces | GCI, PCM, and SPI |
| Codec Resolution | 16 bit |
| Audio Sample Rate | 16 kHz |
| Wideband Audio Band | 50 Hz to 7 kHz |
| Narrowband Audio Band | 200 Hz to 3.4 kHz |
| 工作温度范围 | -40°C to 85°C |
| 封装 | 38-TSSOP, 4.40 mm width |
| 引脚数量 | 38 pins |
| 安装类型 | Surface mount |
| RoHS 状态 | Compliant |
| Lead-Free Status | Lead free |
SI3216-GT 38-tssop, 4.40 mm width 引脚配置指南
SI3216-GT（38-tssop, 4.40 mm width 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-GT.
请参阅 数据手册 以查看完整引脚配置。
典型应用
SI3216-GT 适用于 6 应用s: Voice-over-IP CPE, Analog Voice Gateway, Broadband Voice Terminal, Customer Premises Equipment, Digital Signal Processor Gateway, Legacy VoIP Line Adapter.
Voice-over-IP CPE
The SI3216-GT fits Voice-over-IP customer-premises equipment that needs a compact analog telephone endpoint and enhanced speech bandwidth. Its ProSLIC architecture combines the subscriber-line interface and codec, while the 16-bit codec operates at 16 kHz for wideband audio from 50 Hz to 7 kHz. GCI, PCM, and SPI connectivity lets the device connect to different host architectures. The 3.13 V to 5.25 V operating range supports both 3.3 V and 5 V system designs. Designers must add the external line protection and separation network required by the manufacturer application circuit.
推荐
Analog Voice Gateway
A voice gateway requiring one analog subscriber-line endpoint can use the SI3216-GT to combine line-interface and codec functions in a 38-TSSOP package. The device supports wideband speech from 50 Hz to 7 kHz as well as narrowband operation from 200 Hz to 3.4 kHz, allowing a single endpoint design to serve legacy and enhanced calls. Its listed 88 mA supply current and 700 mW power figure should be included in gateway thermal and power-budget calculations. GCI, PCM, or SPI connectivity supports different system partitioning strategies.
推荐
Broadband Voice Terminal
The SI3216-GT is appropriate for broadband voice terminals that benefit from a 7 kHz audio band without using a separate analog line interface and audio codec. Its 16-bit codec at 16 kHz provides a clear digital-audio path for a communications processor, while the three interface options support GCI packet audio, PCM transport, or SPI configuration. The wideband path must remain enabled throughout the signal chain, including the host codec and network transport. External line-network components and protection should follow the manufacturer reference design.
推荐
Customer Premises Equipment
The SI3216-GT supports customer-premises equipment requiring one analog telephone connection and flexible digital control. A 38-TSSOP package allows integration into compact voice terminals, while the 3.13 V to 5.25 V range accommodates common embedded power rails. Wideband and narrowband modes let one platform support enhanced speech and standard telephony compatibility, reducing the need for separate audio-path designs. Engineers should validate line impedance, protection, ringing, and hook-state behavior against the manufacturer application guidance and the intended regional network requirements.
推荐
Digital Signal Processor Gateway
The SI3216-GT can serve as the analog-facing codec in a digital signal processor gateway, using GCI, PCM, or SPI to connect to digital processing hardware. Its 16-bit, 16 kHz codec supports wideband speech, while the single-channel architecture is appropriate for one subscriber line per device. The stated 88 mA supply current helps engineers allocate regulator capacity in compact embedded platforms. Keep digital return paths short, observe the manufacturer's grounding recommendations, and confirm interface timing with the host processor before high-volume deployment.
推荐
Legacy VoIP Line Adapter
The SI3216-GT is useful when an existing VoIP design must add a conventional analog telephone endpoint while retaining narrowband compatibility. Its codec supports both 50 Hz to 7 kHz wideband and 200 Hz to 3.4 kHz narrowband modes, allowing the same endpoint hardware to address legacy calls and enhanced-quality services. The 38-TSSOP package and 3.13 V to 5.25 V supply operation support integration into established access hardware. Production changes should verify obsolete or lifecycle-sensitive companion components as well as the SI3216-GT configuration itself.
推荐
推荐产品汇总
工程参考数据： SI3216-GT ——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 | SI3216-BT | SI3216-C-FT |
|---|---|---|---|
| Brand | Silicon Labs | Silicon Labs | Silicon Labs |
| Package | 38-TSSOP | 38-TSSOP | 38-TSSOP |
| Device Type | SLIC and audio codec | SLIC and codec | SLIC and codec |
| Number of Channels | 1 circuit | 1 circuit | 1 circuit |
| Supply Voltage Range | 3.13 V to 5.25 V | 3.13 V to 5.25 V | 3.13 V to 5.25 V |
| Pin Count | 38 pins | 38 pins | 38 pins |
关键差异点
- Integrated single-channel ProSLIC and codec （对比 SI3216-BT)
- Three digital connectivity options （对比 SI3216-C-FT)
- Wideband and narrowband compatibility （对比 SI3216-BT)
- Broad system supply range （对比 SI3216-C-FT)
设计说明
Budget the SI3216-GT supply network around the listed 88 mA supply current and 700 mW power dissipation, while adding margin for external line-interface circuitry and startup transients. Place the manufacturer-recommended bypass capacitors adjacent to the supply and ground pins and keep their return paths short. Validate the regulator headroom across the full 3.13 V to 5.25 V operating range rather than designing against the nominal 3.3 V condition alone.
Separate the analog subscriber-line region from GCI, PCM, SPI, and other digital signals to reduce codec noise and unintended coupling. Follow the pin-description table in the Silicon Labs Si3216 manufacturer datasheet when assigning the 38-TSSOP footprint. Keep sensitive analog traces short, provide a continuous ground reference, and place external line-protection and filtering components where their connection paths remain controlled.
Do not assume that every SI3216 family suffix is electrically and pin compatible. The available SI3216-BT comparison warns that circuit structure can differ, while the SI3216-C-FT record does not establish every electrical and timing characteristic. For any substitution, compare pin functions, interface protocols, clock requirements, line impedance, supply limits, temperature grade, and package dimensions against the manufacturer documentation before releasing the change.
Estimated: using the listed 700 mW power figure and a 70°C maximum junction-temperature assumption, the available temperature rise would be limited to about 55°C before the junction limit is reached. This estimate does not establish the actual junction temperature because board thermal resistance, ambient temperature, copper area, and operating mode are unspecified. Use the manufacturer's thermal information and PCB layout guidance to determine whether the 38-TSSOP footprint requires additional copper.
合规信息
The SI3216-GT listing identifies the device as RoHS compliant and lead free. No explicit REACH, halogen-free, conflict-minerals, or automotive-qualification statement was identified. AEC-Q100 is not applicable to this telecom interface IC based on the product classification.
