Maxim announced the launch of the MAX98357 and MAX98358 digital input Class D audio power amplifiers to help designers achieve compact, efficient, plug-and-play solutions at a cost-effective price. In addition to having a small form factor, the device can achieve 3.2W class AB amplifier sound quality with class D amplifier efficiency, obtaining excellent high-fidelity sound effects, suitable for various product applications.
In traditional designs, when electronic engineers use analog amplifiers, they need to cooperate with a digital-to-analog converter (DAC) and add line drivers to the application processor. This will increase the overall cost of the speaker output and affect the overall solution size. As consumer voice control devices become more and more popular, consumers' requirements for sound quality are also increasing. Designers need to meet the requirements of sound effects while ensuring the simplicity of the design and low power consumption and high efficiency.
The MAX98357 Pulse Code Modulation (PCM) and MAX98358 Pulse Density Modulation (PDM) plug-and-play speaker amplifiers take full advantage of the flexibility of Maxim's pinout. Compared with a typical analog amplifier solution, the number of components is greatly reduced, thereby significantly reducing the size of the solution. Since most users control the volume digitally, these features allow users to take advantage of Maxim's cost-effective wafer-level packaging (WLP) without the need for expensive PCB VIAs. In order to achieve excellent sound quality, the device uses a digital input with high noise immunity and has a high jitter tolerance (at least 8dB better than competitive solutions). The device also provides excellent electromagnetic interference (EMI) suppression, allowing the use of long wires to connect speakers without adding external filtering. In addition, the device provides the industry's highest class D efficiency.
To simplify the design, the plug-and-play function only requires the user to connect one power supply, providing both the bit clock (BCLK) and the left and right channel clocks (LRCLK) for the MAX98357 and MAX98358 without the need for a master clock (MCLK). These amplifiers can automatically implement up to 35 clock configurations and 128 digital audio format configurations, further simplifying the design. Automatic configuration eliminates complex I2C programming, and customers no longer need to write basic programs to add an audio function. As more and more applications (such as smart speakers) require multi-directional / multi-channel audio, the demand for the MAX98357 and MAX98358 also increases, and the two are easily daisy-chained to support speaker array amplifiers (through time-division multiplexing) That is, TDM supports up to 8 channels).
Main advantage
• Excellent sound quality: the highest dynamic range of similar products (103.5dB), the industry ’s best total harmonic distortion (THD) and noise (0.013%), excellent click / pop suppression (-66dBV exit off), Provides a comprehensive click / pop suppression circuit
• High cost performance: WLP packaging does not require expensive PCB VIA; most applications require only one external component (bypass capacitor), single power supply; competitive solutions require at least two external components and internal IVA and two power supply voltages
• Plug and play: No programming, just a single power supply, you can automatically configure 35 different clocks and 128 digital audio formats
• Compact structure: Adopt tiny scheme size (1.93mm2 WLP); provide three gains for easy connection
• The industry's highest efficiency Class D amplifier: compared to competitive solutions, it can provide up to 92% efficiency
Evaluation
• "When evaluating audio devices for my home control project, I have been looking for solutions with the best sound quality and small size." MarTIn Winston, editor of NewsTIps BulleTIn, said: "The MAX98357 digital PCM input Class D audio amplifier provides the smallest space High-quality audio, supporting Raspberry Pi or other I2S input sources. "
• "In addition to having the highest efficiency and best sound quality in Class D amplifier products, the flexible pin arrangement of the device allows customers to take full advantage of the size and low cost advantages of WLP packages, which will become a killer for most customers." Maxim Integrated Mobile Greg Mow, audio solutions business manager, said.
Supply and price
• Both the MAX98357 and MAX98358 are priced at US $ 0.87; both devices can be purchased through Maxim ’s official website and authorized dealers
• Provide MAX98357EVKIT # WLP and MAX98358EVKIT # WLP (also provide TQFN package) evaluation board, the price is 59.50 US dollars
Nano High-frequency Transformer Iron Core
Our company's high-frequency transformer iron cores have very good quality.It can be widely used to the Inverter Welding machine power supply,X-ray, laser, communication power supply,UPS and high frequency induction heating power supply ,charging power supply,electrolytic and electroplate power supply,frequency control of motor speed power supply and plasma cutting machine.
Power Transformer Magnetic Ring,Low-Cost Iron Core,Plasma Cutting Machine Iron Core,Heating Power Supply Core
Anyang Kayo Amorphous Technology Co.,Ltd. , https://www.kayoamotech.com