ALC269
HD audio codec specifically designed for notebook and laptop computers
Product Overview
Description
The Realtek ALC269 is an HD audio codec specifically designed for notebook and laptop computers, offering optimized features for portable computing applications with power efficiency and space constraints in mind.
This codec supports stereo playback with 98dB SNR and includes features specifically beneficial for laptops like independent headphone and speaker outputs, allowing simultaneous connection of both. The integrated Class-D speaker driver provides efficient audio output.
ALC269 includes advanced power management with multiple power states and automatic power-down features, making it ideal for battery-powered notebooks where power consumption directly impacts battery life.
Product Series
ALC
Primary Application
Notebook computers
Key Features
- Optimized for notebooks
- 98dB SNR DAC
- Independent HP/SPK outputs
- Class-D speaker driver
- Advanced power management
- Small QFN package
- Jack detection
- Low power consumption
Specifications
| Channels | Stereo (2.0) |
|---|---|
| DAC SNR | 98 dB (A-Weighted) |
| ADC SNR | 92 dB (A-Weighted) |
| Sample Rates | Up to 192kHz/24bit |
| Speaker Output | Class-D integrated |
| Interface | Intel HD Audio |
| Features | Independent HP/SPK outputs |
| Operating Temperature | 0°C to +70°C |
| Package | QFN-32 |
| Power | 3.3V |
Applications
Notebook computers
Electronic system design
Laptops
Electronic system design
Netbooks
Electronic system design
Portable computers
Electronic system design
Mobile workstations
Electronic system design
FAE Expert Insights
"ALC269 is purpose-built for notebooks. The independent headphone and speaker outputs are a key feature - users can have both connected simultaneously. The Class-D amp is efficient for laptop speakers. Power management is excellent with multiple low-power states. we've seen this in countless laptop designs over the years."
Notebook-optimized with independent HP/SPK outputs
— Sarah Johnson, BeiLuo
Frequently Asked Questions
What are independent headphone and speaker outputs?
Independent outputs mean ALC269 can drive both headphones and internal speakers simultaneously without manual switching. When headphones are plugged in, the internal speakers can remain active or be muted based on software configuration. This allows features like playing different audio to headphones vs speakers or seamless transitions between output devices.
Convenient dual-output capability. Users can have both connected simultaneously.
How does ALC269 optimize power for notebook use?
ALC269 includes multiple power optimization features: (1) Multiple power states from full active to deep sleep, (2) Automatic power-down when audio not in use, (3) Jack detection to power down headphone amp when unplugged, (4) Class-D speaker driver for efficiency, (5) Quick wake from sleep for responsive audio. These features minimize battery drain while maintaining good audio responsiveness.
Excellent power optimization. Multiple sleep states minimize battery drain.
Is stereo sufficient for modern laptops?
Yes, stereo is sufficient for most laptop use cases. The built-in stereo speakers in laptops provide adequate audio for video calls, music, and videos. Users wanting surround sound typically use external speakers or headphones with virtual surround processing. Multi-channel codecs (7.1) are rarely utilized in laptop form factors due to space constraints for multiple speakers.
Stereo sufficient for laptops. External speakers/headphones for surround needs.
What speaker power can ALC269 drive?
ALC269's Class-D speaker driver can deliver approximately 1-2W per channel into typical 4-8 ohm laptop speakers. This is sufficient for typical laptop speakers to produce comfortable listening levels in quiet to moderate ambient noise environments. The Class-D efficiency (85%+) means minimal heat generation even at maximum output.
1-2W sufficient for laptop speakers. Class-D efficiency minimizes heat.
Does ALC269 support microphone input for voice calls?
Yes, ALC269 includes stereo ADC with 92dB SNR for microphone input. It supports both analog microphone inputs and can work with digital microphones through external interface chips. The codec is suitable for voice calls, video conferencing, and voice recording applications typical in laptop use. Noise cancellation features depend on software implementation.
Good microphone support for voice calls. Suitable for video conferencing.