AW87329
Awinic AW87329 3W Class-D audio amplifier with spread spectrum modulation for low EMI and high efficiency.
Product Overview
Description
The AW87329 is a high-efficiency Class-D audio amplifier featuring spread spectrum modulation technology for reduced EMI emissions.
This device delivers up to 3W output power with exceptional efficiency and low quiescent current for extended battery life.
The integrated filter-less design reduces external component count while maintaining excellent audio performance.
Product Series
AW
Primary Application
Smartphones
Key Features
- Spread spectrum modulation for low EMI
- Filter-less Class-D architecture
- High efficiency >90%
- Low quiescent current <1mA
- Comprehensive protection features
- I2C control interface
Specifications
| Output Power | 3W @ 4Ω, VBAT=3.6V |
|---|---|
| Efficiency | >90% @ 1W |
| THD+N | <0.1% @ 1W |
| Supply Voltage | 2.5V - 5.5V |
| Package | WLCSP-16 |
Applications
Smartphones
Electronic system design
Tablets
Electronic system design
Portable speakers
Electronic system design
IoT devices
Electronic system design
Wearable devices
Electronic system design
FAE Expert Insights
"The AW87329 is an excellent choice for cost-sensitive applications requiring good audio quality with minimal EMI concerns. The spread spectrum modulation significantly reduces EMI emissions, making it easier to pass EMC certification. I have successfully used this amplifier in IoT devices and portable speakers where EMI compliance was critical. The filter-less design reduces BOM cost and PCB area. The efficiency is excellent for battery-powered applications. For applications that don't need the advanced features of Smart PA, this Class-D amplifier offers excellent value."
Low EMI Class-D amplifier with spread spectrum for cost-sensitive audio applications
— David Zhang, BeiLuo
Frequently Asked Questions
What is spread spectrum modulation and how does it reduce EMI?
Spread spectrum modulation varies the switching frequency of the Class-D amplifier over a small range, spreading the EMI energy across a wider frequency band rather than concentrating it at a single frequency. This reduces peak EMI emissions, making it easier to meet EMC regulations.
Use AW87329 for applications requiring low EMI without external filters.
Can AW87329 operate without an output filter?
Yes, the AW87329 supports filter-less operation for speakers with short wire lengths (<10cm). The amplifier uses advanced modulation techniques to reduce high-frequency switching noise. For longer speaker wires, a simple ferrite bead can be added.
Filter-less operation works for short speaker wires. Add ferrite beads for longer wires.
What is the efficiency of AW87329?
The AW87329 achieves up to 90% efficiency at typical operating conditions. High efficiency reduces power dissipation and extends battery life in portable applications. The Class-D architecture is significantly more efficient than Class-AB amplifiers.
90% efficiency makes AW87329 ideal for battery-powered applications.
What protection features are included?
The AW87329 includes comprehensive protection features: over-current protection, over-temperature protection, short-circuit protection, and under-voltage lockout. These protections ensure reliable operation and prevent damage to the amplifier and speaker.
Comprehensive protection features ensure reliable operation.
What is the typical application for AW87329?
The AW87329 is ideal for smartphones, tablets, portable speakers, IoT devices, and wearable devices. Its compact size, high efficiency, and low EMI make it suitable for space-constrained battery-powered applications.
AW87329 is best for portable consumer electronics requiring audio amplification.