ALC5660-CG - 106dB SNR Stereo Audio Codec w/ HP Amp | Realtek
料号： ALC5660-CG ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.62 | $16.20 |
| 100 | $1.38 | $138.00 |
| 500 | $1.18 | $590.00 |
| 1,000 | $0.98 | $980.00 |
| 3,000 | $0.82 | $2,460.00 |
ALC5660-CG 概述
An audio codec is a mixed-signal integrated circuit that bridges the digital audio domain (typically I2S, PCM, TDM, or S/PDIF streams) and the analog audio domain (headphones, line-level outputs, microphones, and line-level inputs). Inside the codec, multi-bit sigma-delta ADCs digitize analog microphone and line-in signals, while multi-bit sigma-delta DACs reconstruct analog waveforms from the incoming digital stream. The ALC5660 belongs to the broader hierarchy of audio interface ICs > interface ICs > signal chain ICs > mixed-signal semiconductor; codecs are distinguished from pure DACs or ADCs by their bidirectional stereo architecture and integrated mixer, microphone preamplifier, and (in this case) headphone driver.
Key features of the ALC5660-CG include a 106 dB SNR DAC, 24-bit resolution across the digital audio interface, integrated headphone amplifier with ground-referenced Class-G topology, support for microphone bias and digital microphone inputs, and a flexible digital mixing engine. The Class-G amplifier dynamically scales the internal supply rail to match the instantaneous headphone output level, sharply reducing quiescent dissipation during quiet passages while still delivering ample headroom for peaks.
Technically, the ALC5660 uses multi-bit sigma-delta modulator cores for both the record (ADC) and playback (DAC) paths, with on-chip digital decimation/interpolation filters. The headphone path uses a charge-pump-derived negative rail and a dynamically switched supply to maximize efficiency at low output levels. All gain, mixing, and routing is controlled through a two-wire (I2C-style) control interface.
Typical applications include tablets, ultrabooks, docking stations, portable media players, USB-C headsets, and single-board computer audio hats. The QFN package and integrated HP amp minimize PCB area, while the high SNR suits music playback and VoIP.
Design consideration: the Class-G topology relies on adequate bulk decoupling near the HP supply pins, and the digital I2S/PCM bus should be length-matched and routed away from the analog headphone outputs to preserve SNR.
This page consolidates distributor pricing, drop-in alternative candidates, and engineering design notes not available in the standalone manufacturer datasheet, helping engineers evaluate sourcing options and PCB integration in one place.
直接替换替代料： ALC5660-CG ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
ALC5660-CGT
✅ 直接替换📋 参考替代料（不在目录中）
ALC5661-CG
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ALC5651-CG
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ALC5672-CG
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ALC5680-CG
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ALC5660-CG 规格参数
| 功能 | Stereo Audio Codec with integrated Class-G headphone amplifier |
| DAC SNR (A-weighted) | 106 dB |
| 分辨率 | 24-bit |
| Digital Audio Interface | I2S / PCM |
| Control Interface | 2-wire (I2C-compatible) |
| Headphone Output | Stereo, Class-G ground-referenced |
| Microphone Inputs | Analog mic with bias and digital mic support |
| Line Outputs | Stereo line-out |
| Headphone Load | 16 ohm to 32 ohm typical |
| 封装 | QFN (surface-mount) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
ALC5660-CG qfn (surface-mount) 引脚配置指南
ALC5660-CG（qfn (surface-mount) 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： ALC5660-CG.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ALC5660-CG 适用于 7 应用s: Tablet and Ultrabook Audio Subsystem, USB-C Headset Audio Interface, Single-Board Computer Audio Hat, Docking Station Audio Output, Portable Media Player Headphone Path, VoIP Speakerphone and Conference Devices, Industrial HMI Audio Feedback.
Tablet and Ultrabook Audio Subsystem
The ALC5660-CG's 106 dB SNR DAC and integrated Class-G headphone amplifier let it drive 16-32 ohm headphone loads directly from a tablet or ultrabook mainboard without a discrete HP amp IC, saving roughly 25 mm^2 of PCB area. Placed between the host SoC's I2S bus and the 3.5 mm jack, the codec delivers music-grade playback SNR while the Class-G supply scaling reduces quiescent current during quiet passages, extending battery life versus a fixed-rail amplifier.
推荐
USB-C Headset Audio Interface
The ALC5660-CG's stereo I2S/PCM interface and integrated HP amp suit USB-C digital headsets where the host streams 24-bit audio over I2S and the codec drives the capsule directly. The 24-bit resolution preserves dynamic range through the digital link, and the Class-G amp keeps thermal dissipation low even at 32 ohm loads during long voice or music playback sessions.
推荐
Single-Board Computer Audio Hat
For Raspberry Pi-style single-board computers needing high-fidelity line and headphone outputs, the ALC5660-CG's I2S interface mates directly with the SoC's I2S pins while its 106 dB SNR lifts audio quality above typical onboard codecs. The compact QFN footprint suits HAT form factors, and the integrated mic preamp supports onboard MEMS microphone arrays for capture applications.
推荐
Docking Station Audio Output
Docking stations that add line and headphone outputs to laptops benefit from the ALC5660-CG's stereo line-out and HP paths sharing one IC. With 106 dB SNR and integrated Class-G efficiency, the codec supports speaker passthrough, headphone monitoring, and microphone capture simultaneously through the same analog mixing block, simplifying the BOM and PCB routing.
推荐
Portable Media Player Headphone Path
Battery-powered portable media players demand both high audio fidelity and low quiescent draw. The ALC5660-CG's Class-G amplifier modulates its supply with the output level, so idle draw drops sharply during quiet playback compared to a Class-AB HP amp. Combined with the 24-bit DAC SNR of 106 dB, it delivers audiophile-grade playback within a tight power budget.
推荐
VoIP Speakerphone and Conference Devices
Conference speakerphones need duplex audio with both a quality playback path and a capture path for the microphone array. The ALC5660-CG integrates stereo ADC inputs with mic bias for two analog microphones plus digital mic support, while the Class-G HP amp drives the loudspeaker efficiently. The 106 dB SNR DAC ensures clear playback for voice intelligibility across a conference room.
推荐
Industrial HMI Audio Feedback
Industrial human-machine interfaces (HMIs) often need short audio prompts and alarms played through small speakers. The ALC5660-CG's integrated HP amp drives these speakers directly from a single 3.3 V rail, while its 24-bit I2S interface accepts pre-rendered audio cues from the host MCU. Industrial operating temperature and RoHS compliance make it suitable for factory-floor equipment.
推荐
推荐产品汇总
工程参考数据： ALC5660-CG ——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 | ALC5660-CGT | ALC5661-CG | ALC5651-CG | ALC5672-CG | ALC5680-CG |
|---|---|---|---|---|---|---|
| Package | QFN (surface-mount) | QFN (same) | QFN (same family) | QFN (same family) | QFN (same family) | QFN (same family) |
| Brand | Realtek | Realtek | Realtek | Realtek | Realtek | Realtek |
| Function | Stereo codec + Class-G HP amp | Stereo codec + Class-G HP amp | Stereo codec + Class-G HP amp | Stereo codec + Class-AB HP amp | Stereo codec + Class-G HP amp | Multi-channel codec + HP amp |
| DAC SNR | 106 dB | 106 dB | 106 dB | ~100 dB | 106 dB | 106 dB |
| Resolution | 24-bit | 24-bit | 24-bit | 24-bit | 24-bit | 24-bit |
| Digital Interface | I2S / PCM | I2S / PCM | I2S / PCM | I2S / PCM | I2S / PCM | I2S / PCM |
| Headphone Amplifier Topology | Class-G ground-referenced | Class-G ground-referenced | Class-G ground-referenced | Class-AB | Class-G ground-referenced | Class-G ground-referenced |
| Lifecycle Status | Active | Active | Active | Active | Active | Active |
关键差异点
- Integrated Class-G headphone amplifier on-chip （对比 ALC5651-CG)
- 106 dB SNR for music-grade playback （对比 ALC5651-CG)
- Same-family pinout reuse across the ALC56xx series （对比 ALC5680-CG)
设计说明
The Class-G headphone amplifier relies on a stable bulk-decoupling network. Place a 10 uF ceramic and a 1 uF ceramic directly at AVDD and HP_VREF pins, plus a 100 nF high-frequency bypass within 2 mm of each supply pin. Inadequate bulk capacitance causes rail pumping and audible distortion on bass-heavy content.
Route the I2S/PCM data bus (BCLK, LRCLK, SDATAIN, SDATAOUT) on the inner layer with ground plane beneath, and keep the digital traces at least 5 mm away from the analog HP-OUT traces. Length-match BCLK and LRCLK to within 5 mm to avoid timing skew that can introduce jitter into the DAC.
Do not leave the mic-bias pin floating if no analog microphone is used; tie it to AVDD through a 2.2 kohm resistor or disable the bias in software. Floating mic-bias injects noise into the ADC path, degrading the SNR figure by 3-5 dB in measurement.
合规信息
RoHS compliance and lead-free status confirmed from distributor listings as of 2026-10-06. REACH, halogen-free, and conflict-minerals status not stated in the available Realtek brief; treat as unknown until verified against the manufacturer's declaration.
