SI3000-C-FS - 16-Bit Voice Codec | Skyworks Solutions
MPN： SI3000-C-FS ✓ 啟用中SI3000-C-FS 概覽
A voice-band audio codec converts analog voice signals into digital data for transmission and reconstructs digital audio into an analog signal for playback. The SI3000-C-FS integrates several telephone-interface functions that otherwise require separate components, including microphone amplification, output drive, microphone bias, and handset hybrid support. Its 16-bit serial interface allows it to connect with compatible modem and data-access-arrangement devices.
Programmable input and output gain or attenuation provide control over signal levels in analog voice paths. The integrated microphone bias circuit supports microphone-based input stages, while the output driver is specified for 32-ohm headphones. These functions reduce the number of external analog components required in a voice-band interface.
The SI3000 family is intended for voice-band equipment, including ISOmodem and digital access equipment. The SI3000-C-FS can connect directly to Si3035, Si3044, and Si3056 North American and international DAA chipsets through the serial interface, allowing an analog voice path to be paired with an established line-interface chipset.
Supply-voltage operation from 3 V to 5.25 V makes the codec usable in 3.3 V and 5 V systems. The listed operating-temperature range is 0 C to 70 C. Because this is a mixed analog-and-serial-interface device, correct grounding, supply decoupling, clock implementation, and layout of the voice path directly affect signal integrity and audio performance.
For a new design, use the manufacturer pin-description table and recommended application circuit when assigning PCB tracks, setting gain, and selecting support components. Pay particular attention to analog and digital return paths, the microphone-bias connection, and the output-drive network. The 16-pin SOIC footprint supports conventional surface-mount assembly but requires adequate copper and thermal considerations for reliable soldering.
This page combines device capabilities, application fit, sourcing guidance, and practical design notes to help engineers evaluate the SI3000-C-FS for compact voice-band systems. It also distinguishes verified compatibility from unknown replacement options so procurement decisions can be based on package, interface, and electrical requirements rather than MPN similarity alone.
直接替換替代品，適用於 SI3000-C-FS — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： SI3000-C-FS （相同外形與佔位） — 差異在於 Mounting Type, Product Type.
此產品無可直接替換的替代品。
申請替代品SI3000-C-FS 規格
| Product Type | Voice-band audio codec |
| ADC Resolution | 16 bit |
| Serial Interface | 16-bit serial |
| Supply Voltage Range | 3 V to 5.25 V |
| Digital Supply | 3.3 V or 5.0 V |
| Analog Supply | 3.3 V or 5.0 V |
| 工作溫度範圍 | 0 C to +70 C |
| Input Gain Control | Programmable |
| Output Gain Control | Programmable attenuation |
| Microphone Bias | Integrated |
| Handset Hybrid Circuit | Integrated |
| Headphone Output Load | 32 ohm |
| 封裝 | 16-pin SOIC |
| 安裝類型 | Surface Mount |
| Compatible DAA Chipsets | Si3035, Si3044, Si3056 |
SI3000-C-FS 16-pin soic 腳位配置指南
SI3000-C-FS（16-pin soic 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： SI3000-C-FS.
請參閱 資料表 以查看完整腳位配置。
典型應用
SI3000-C-FS 適用於 6 應用s: Voice-Band Modem Interface, Digital Access Equipment, Microphone Voice Terminal, Headset Audio Interface, ISOmodem Voice Path, Compact Voice Processing Module.
Voice-Band Modem Interface
The SI3000-C-FS is appropriate for a voice-band modem analog front end where a 16-bit serial codec must exchange speech signals with modem logic. Its 3 V to 5.25 V operating range supports 3.3 V and 5 V equipment, while programmable input and output gain or attenuation gives the designer control over signal levels. The integrated microphone bias and handset hybrid circuitry reduce the number of separate analog functions needed near the voice interface. Its 16-pin SOIC package also preserves a conventional surface-mount assembly option without requiring a large mixed-signal package.
推薦
Digital Access Equipment
The SI3000-C-FS can form the voice conversion section of a digital access terminal connected to a compatible DAA chipset. According to the manufacturer datasheet, it can connect directly to Si3035, Si3044, and Si3056 devices through the daisy-chaining serial interface. Its 16-bit codec resolution supports digital transport of voice-band signals, while integrated microphone bias, handset hybrid circuitry, and programmable gain simplify the analog path. This integration is useful when the design needs telephone-line audio functions without a separate collection of analog support ICs.
推薦
Microphone Voice Terminal
The SI3000-C-FS fits microphone-based voice terminals that require programmable receive gain and an integrated microphone-bias source. The 16-bit serial interface provides a defined digital path to a processor or communications controller, while the input gain control helps establish the correct microphone signal level. Its operating range of 3 V to 5.25 V accommodates both 3.3 V and 5 V systems. The 16-pin SOIC construction keeps the component manageable for compact voice terminals and avoids the larger footprint of a codec with separate microphone and output-driver ICs.
推薦
Headset Audio Interface
The SI3000-C-FS can serve as the codec and analog drive element in a hands-free or wired-headset interface. Its integrated output driver is specified for 32-ohm headphones, while programmable output attenuation allows the designer to control the playback level. The 16-bit codec path and 3 V to 5.25 V supply range suit compact communications equipment operating from 3.3 V or 5 V rails. The integrated handset hybrid and microphone-bias functions can also support telephone-style audio paths when a compatible DAA chipset is used.
推薦
ISOmodem Voice Path
The SI3000-C-FS is directly relevant to ISOmodem designs because the device combines voice conversion with the analog functions required at the line-interface boundary. Programmable input and output gain or attenuation allow the voice path to be aligned with the modem and DAA system, while the 16-bit serial interface provides a digital connection to compatible silicon. Operation from 3 V to 5.25 V supports both 3.3 V and 5 V system architectures. The 16-pin SOIC package permits reuse of an existing voice-codec land pattern when the surrounding schematic is also compatible.
推薦
Compact Voice Processing Module
The SI3000-C-FS is useful in compact voice-processing modules that must accept an analog microphone signal and provide a serial digital audio stream to a controller. The integrated microphone bias circuit, programmable input gain, and 16-bit codec remove several discrete stages from the signal chain. Its 3 V to 5.25 V operating range supports common embedded supply levels, and the SOIC package is straightforward to assemble at production volumes. When paired with a compatible Si3035, Si3044, or Si3056 DAA device, the same codec can support telephone-oriented voice functions in a small system.
推薦
推薦產品摘要
工程參考資料，適用於 SI3000-C-FS — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 |
|---|---|
| Product Type | Voice-band audio codec |
| ADC Resolution | 16 bit |
| Serial Interface | 16-bit serial |
| Supply Voltage Range | 3 V to 5.25 V |
| Operating Temperature Range | 0 C to +70 C |
| Input Gain Control | Programmable |
| Output Gain Control | Programmable attenuation |
| Headphone Output Load | 32 ohm |
| Package | 16-pin SOIC |
| Brand | Skyworks Solutions Inc. |
主要差異化特點
- Integration of the complete voice-band analog function set (對比Discrete microphone, gain-control, hybrid, and headphone-driver implementation)
- Direct support for common DAA chipset families (對比Codec requiring a separate interface adapter)
- Operation across common embedded supply levels (對比Codec limited to a single 5 V supply)
設計說明
Place the input, output, and supply bypass capacitors close to their associated SI3000-C-FS pins, following the manufacturer application circuit for values and topology. Keep the analog voice traces away from the 16-bit serial clock and data routing. The mixed-signal layout should use a deliberate ground strategy rather than assuming that a single ground pour alone will provide acceptable coupling performance.
Route the serial clock, data, and associated control signals as a compact group and provide uninterrupted return paths beneath or adjacent to the traces. Respect the interface timing and setup requirements in the manufacturer datasheet before selecting a processor or DAA companion. If the codec is mounted away from its digital controller, account for trace capacitance and possible crosstalk rather than relying only on nominal logic-level compatibility.
Design separate analog and digital supply connections according to the SI3000-C-FS application circuit, and decouple both VD and VA at the device. The codec supports 3.3 V and 5.0 V operation, but the chosen regulator tolerance, startup sequence, and clocking implementation still need to satisfy the manufacturer requirements. Check both supply rails during power transitions because a nominal common voltage does not guarantee simultaneous rail validity.
Do not substitute an Si3000 ordering code solely because its family name is similar. Verify package pins, grade, operating-temperature range, supply limits, interface timing, and register behavior for the exact replacement. This caution is especially important when moving between SI3000-C-FS and SI3000-KS because the available comparison does not provide a complete pin-to-pin and electrical qualification.
合規資訊
RoHS, REACH, AEC-Q100, lead-free, halogen-free, and conflict-minerals status were not stated in the indexed product information. The listed operating-temperature range is 0 C to 70 C.
