ALC5616
Ultra-low power audio codec with digital microphone support for tablets and mobile devices
Product Overview
Description
The Realtek ALC5616 is an ultra-low power audio codec with integrated digital microphone (DMIC) support, designed for tablets, smartphones, and portable media players requiring extended battery life.
This codec features ultra-low power consumption of just 5mW during playback, making it ideal for battery-powered devices. The integrated DMIC interface supports up to 4 digital microphones for advanced voice processing and noise cancellation.
ALC5616 includes a high-efficiency Class-D speaker driver capable of delivering 1W output, perfect for tablet and smartphone speaker applications where audio quality and power efficiency are both critical.
Product Series
ALC
Primary Application
Tablets
Key Features
- Ultra-low 5mW power
- DMIC interface (4 channels)
- 1W Class-D speaker driver
- 95dB SNR DAC
- I2S/PCM interface
- Headphone output
- Automatic level control
- Small QFN package
Specifications
| Channels | Stereo |
|---|---|
| DAC SNR | 95 dB (A-Weighted) |
| ADC SNR | 92 dB (A-Weighted) |
| Sample Rates | Up to 48kHz/24bit |
| Speaker Output | 1W Class-D |
| DMIC Support | Up to 4 DMICs |
| Power Consumption | 5mW playback |
| Operating Temperature | -10°C to +70°C |
| Package | QFN-32 |
| Interface | I2S/PCM |
Applications
Tablets
Electronic system design
Smartphones
Electronic system design
Portable media players
Electronic system design
Smart speakers
Electronic system design
Voice assistants
Electronic system design
FAE Expert Insights
"ALC5616 is purpose-built for mobile devices. The 5mW power consumption is exceptional - critical for tablets and phones. The DMIC support enables modern voice features like noise cancellation and voice wake. The 1W Class-D speaker driver is perfect for tablet speakers. We recommend this for any battery-powered device needing quality audio."
Ultra-low power with DMIC support for mobile devices
— Sarah Johnson, BeiLuo
Frequently Asked Questions
What are the advantages of DMIC over analog microphones?
Digital microphones (DMIC) offer several advantages: (1) Better noise immunity - digital signal less susceptible to interference, (2) Simplified routing - no sensitive analog traces, (3) Integrated ADC - microphone includes analog-to-digital conversion, (4) Multiple microphone support - easy to connect several DMICs, (5) Better for noise cancellation - digital processing enables advanced algorithms. DMICs are ideal for modern voice applications.
DMIC preferred for modern designs. Better for voice processing and noise cancellation.
How does the 1W Class-D speaker driver perform?
The integrated 1W Class-D speaker driver delivers surprisingly good audio quality for tablet and smartphone speakers. It can drive typical 8-ohm speakers to comfortable listening levels with reasonable bass response. The Class-D efficiency (typically >85%) minimizes heat generation and power consumption. For small portable devices, this integrated solution eliminates the need for external speaker amplifiers.
Good performance for portable speakers. Eliminates external amp need.
What is the typical battery life impact of ALC5616?
With just 5mW power consumption during playback, ALC5616 has minimal impact on battery life. A typical tablet battery (5000mAh) could theoretically power the audio codec alone for over 1000 hours. In practice, audio playback is usually 1-3% of total system power consumption. This ultra-low power design is crucial for achieving all-day battery life in tablets and smartphones.
Minimal battery impact. Critical for all-day battery life in mobile devices.
Does ALC5616 support voice wake and always-listening features?
Yes, ALC5616 supports voice wake and always-listening applications. The codec can remain active at very low power (sub-1mW) while monitoring for voice wake words. When detected, it signals the host processor to wake up. The DMIC interface is ideal for microphone arrays used in voice wake systems. This enables 'Hey Siri' or 'OK Google' style functionality in portable devices.
Supports voice wake with very low power. Good for voice assistant integration.
What interface does ALC5616 use to connect to the application processor?
ALC5616 uses standard I2S or PCM digital audio interfaces to connect to application processors. I2S is the most common interface for audio codecs, supported by virtually all processors. The control interface uses I2C for register configuration. This standard interface support makes ALC5616 compatible with a wide range of application processors including Snapdragon, MediaTek, and various ARM SoCs.
Standard I2S/PCM interface. Compatible with most application processors.