Maxim audio amplifiers eye PC displays

Maxim Integrated Products has introduced the MAX9713/MAX9714 mono and stereo class-D audio amplifiers.

With an efficiency of 85 percent, the product eliminates the need for bulky heatsinks commonly required with linear audio amplifiers, making it suitable for thin-profile applications such as flat-panel TVs and PC displays.

The MAX9713/MAX9714 offer 0.04 percent THD+N and high 76dB at 1kHz PSRR. It employs a patented modulation scheme that reduces EMI emissions by 5dB over conventional class-D amplifiers. Short-circuit and thermal-overload protection prevent the devices from being damaged during a fault condition.

Providing class AB amplifier performance with class D efficiency, the amps conserve board space and deliver up to 6W. The devices offer two modulation schemes: a fixed-frequency mode (FFM) and a spread-spectrum mode (SSM) that reduces EMI-radiated emissions due to the modulation frequency. The product uses a fully differential architecture, a full bridged output and comprehensive click-and-pop suppression.

The MAX9713 is available in a 32-pin TQFN package that measures 7-by-7-by-0.8mm, while the MAX9714 is offered in a 32-pin TQFN package that has a dimension of 5-by-5-by-0.8mm. Both devices are rated over the extended -40°C to 85°C temperature range.