SI3000-C-GS - 16-Bit Voice-Band Audio Codec | Skyworks
料号： SI3000-C-GS ✓ 量产中SI3000-C-GS 概述
A voice-band codec is a specialized audio interface that converts analog microphone or line-level signals into a digital serial stream and converts digital audio back into an analog output. Within the hierarchy of audio codecs, line codecs, audio interface ICs, and interface semiconductors, it concentrates several telephone and modem signal-chain functions into one device. Its narrowband sampling range is intended for speech rather than hi-fi music.
The SI3000-C-GS provides one ADC and one DAC, both using 16-bit resolution. Programmable input and output gain or attenuation gives the system designer control over signal levels, while the 30 dB microphone preamplifier supports direct microphone conditioning. The integrated bias circuit reduces external microphone-support requirements, and the headset driver is specified for 32 Ω loads.
Integration is a central advantage because the codec combines the analog voice interface, conversion functions, and telephone-support circuitry. According to the manufacturer datasheet, the device can connect directly with Si3034, Si3035, Si3044, and Si3056 data-access arrangements and chipsets. These interfaces support voice-band modem and telephone equipment where board area and component count are important constraints.
Typical applications include voice-band modems, telephone interface boards, handsets, speakerphones, voicemail equipment, and data-access adapters. The 16-SOIC package also makes the SI3000-C-GS suitable for designs that require conventional surface-mount assembly rather than a high-density land grid array.
When designing around this codec, verify the required analog supply, digital interface voltage, sampling clock, and serial device configuration against the manufacturer pin descriptions and application guidance. Decoupling, grounding, and microphone-bias layout remain critical because they directly influence noise, distortion, and voice intelligibility.
This product data combines the confirmed electrical characteristics, package information, interface functions, application fit, and design considerations needed to evaluate the SI3000-C-GS for a voice-band audio signal chain.
直接替换替代料： SI3000-C-GS ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
SI3000-C-GSR
✅ 直接替换📋 参考替代料（不在目录中）
SI3000-C-FS
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →SI3000-C-FSR
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
SI3000-C-F
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
SI3000-C-GS 规格参数
| Codec Type | Voice-band audio codec |
| ADC Resolution | 16 bit |
| DAC Resolution | 16 bit |
| Number of ADCs | 1 |
| Number of DACs | 1 |
| ADC Dynamic Range | 84 dB typical |
| DAC Dynamic Range | 84 dB typical |
| Sample Rate | 4 kHz to 12 kHz |
| Microphone Preamplifier Gain | 30 dB |
| Headphone Output Load | 32 ohm |
| Analog Supply Voltage | 3 V to 5.25 V |
| Digital Supply Voltage | 3 V to 5.25 V |
| Interface Resolution | 16 bit serial |
| Input Gain | Programmable |
| Output Attenuation | Programmable |
| Integrated Functions | Microphone bias, handset hybrid circuit, and 32 ohm output driver |
| 封装 | 16-SOIC, 0.154 inch (3.90 mm) width |
| 安装类型 | Surface mount |
SI3000-C-GS 16-soic, 0.154 inch (3.90 mm) width 引脚配置指南
SI3000-C-GS（16-soic, 0.154 inch (3.90 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： SI3000-C-GS.
请参阅 数据手册 以查看完整引脚配置。
典型应用
SI3000-C-GS 适用于 6 应用s: Voice-Band Modems, Telephone Interface Equipment, Handsets and Speakerphones, Voicemail and Recording Systems, Industrial Data and Voice Terminals, Voice Recognition and Speech Control.
Voice-Band Modems
The SI3000-C-GS is appropriate for voice-band modem designs that must convert speech-band analog signals into a 16-bit digital stream and reconstruct audio on the receive side. Its 4–12 kHz sampling range directly addresses narrowband communications, while 84 dB typical ADC and DAC dynamic ranges preserve useful signal margin. The 30 dB microphone preamplifier, programmable gain and attenuation, and integrated handset hybrid reduce the number of external analog functions needed around the codec. Designers can pair it with the Si3034, Si3035, Si3044, or Si3056 interface families identified by the manufacturer.
推荐
Telephone Interface Equipment
The SI3000-C-GS integrates the principal analog functions needed by a voice-path interface: microphone bias, microphone amplification, handset hybrid support, programmable signal conditioning, and an output stage for 32 Ω headphones. This integration is useful in telephone adapters, handsets, and speakerphone platforms where the line interface and codec must share a compact board area. The 16-bit converter resolution and 84 dB typical dynamic range support intelligible speech reproduction, while 3 V to 5.25 V analog and digital supplies support conventional embedded logic systems.
推荐
Handsets and Speakerphones
For handsets and speakerphones, the SI3000-C-GS provides a compact conversion and drive path between an analog microphone, a headset connection, and a digital communications processor. Its dedicated 30 dB microphone preamplifier reduces the gain required before conversion, and the programmable input and output controls allow calibration across different microphone sensitivities. The integrated output drive is specified for 32 Ω headphone loads, making the device suitable for voice output stages where space and component count are constrained.
推荐
Voicemail and Recording Systems
The SI3000-C-GS can serve as the voice-band conversion element in voicemail, call recording, and speech-capture equipment that operates on telephone-band audio rather than music-grade signals. Its 4–12 kHz sampling range covers speech applications, and the separate ADC and DAC paths support capture and playback within one device. The 84 dB typical dynamic range provides headroom for varying microphone and line levels, while programmable input gain and output attenuation simplify adaptation to different analog sources and playback conditions.
推荐
Industrial Data and Voice Terminals
Industrial terminals used for remote monitoring, messaging, or data-over-voice can use the SI3000-C-GS where the audio path must operate within the 4–12 kHz speech band. The codec’s 16-bit resolution, 84 dB typical ADC and DAC dynamic range, and programmable analog level controls support consistent voice quality across different microphone and headset arrangements. Operating from 3 V to 5.25 V on both analog and digital rails also simplifies power planning when the codec is paired with a 3.3 V embedded controller.
推荐
Voice Recognition and Speech Control
The SI3000-C-GS is suitable as the analog front end for embedded speech-recognition or voice-control systems operating on speech-band signals. The 30 dB microphone preamplifier, integrated bias support, and 84 dB ADC dynamic range help preserve usable signal quality before digital processing. Its 4–12 kHz sampling capability matches narrowband speech paths and avoids unnecessary conversion bandwidth. The single ADC, single DAC arrangement also allows capture and playback functions to share one compact 16-SOIC package when the host processor requires both directions of audio.
推荐
推荐产品汇总
工程参考数据： SI3000-C-GS ——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 | SI3000-C-GSR | SI3000-C-FS | SI3000-C-FSR | SI3000-C-F |
|---|---|---|---|---|---|
| Package | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC |
| Brand | Skyworks Solutions Inc. | Silicon Laboratories | Silicon Laboratories | Silicon Laboratories | Silicon Laboratories |
关键差异点
- Integrated microphone and handset signal conditioning （对比 SI3000-C-GSR)
- Symmetric conversion performance （对比 SI3000-C-FS)
- Speech-focused conversion bandwidth （对比 SI3000-C-FSR)
设计说明
Place the decoupling capacitors adjacent to the analog and digital supply pins, and keep the microphone, analog output, and digital serial traces physically separated. The microphone bias and preamplifier section is sensitive to nearby switching nodes and digital return currents. Use a continuous ground reference under the SOIC where board density permits, and route analog and digital returns to their respective supply networks without sharing narrow traces.
Treat the microphone connection as a high-impedance analog path. Keep it short, keep the microphone-bias trace away from clocks and serial data, and avoid routing it beneath digital clock lines. If the microphone is remote from the codec, use a shielded or twisted connection and follow the manufacturer’s recommended passive network. This reduces susceptibility to interference that could appear as hiss, modulation, or reduced speech intelligibility.
Establish the serial-interface clocking and data timing from the connected processor before laying out the bus. The SI3000-C-GS is intended for voice-band conversion at 4–12 kHz, but the digital control and data path still requires clean signal conditioning. Match the clock source and grounding arrangement to the manufacturer reference design, and avoid adding long stubs or test-point branches to sensitive serial traces.
Do not treat the 30 dB microphone preamplifier as a substitute for correct acoustic or electrical gain planning. Verify microphone sensitivity, line-level amplitude, programmable input gain, and output attenuation during system calibration. Likewise, confirm that the connected headset is compatible with the 32 Ω output-drive specification. Incorrect source or load assumptions can produce clipping, distortion, or inadequate output level.
合规信息
Current material-compliance declarations were not identified. Request the applicable compliance documentation for the exact SI3000-C-GS ordering code before production release.
