Smallest Class D amplifier offers 'unsurpassed' EMI performance
1 min read
Described as the industry's smallest Class D amplifier, and measuring 1 x 1mm, Maxim has announced the MAX98304 amplifier. Compared to the company's previous generation device, it increases output power by 23% to 3.2W and reduces noise by 39% to 19microVrms.
According to Maxim, improved output power allows maximum loudness even as battery voltages decrease, while lower noise allows the use of a more sensitive speaker. The amplifier's 0.3mm pitch, 9 bump wafer level package (wlp) features a no connect middle bump designed to eliminate the need for pcb technologies and enables the use of single layer pcbs.
Suitable for cell phones, tablets, e-readers, notebooks, and netbooks, the device incorporates patented EMI reduction techniques and optimised circuit design. Maxim says this allows the MAX98304 to have the industry's lowest EMI emissions, and eliminates the need for output filtering found in traditional Class D devices.
The devices performance passes FCC and CE EMI limits and avoids interference with other sensitive circuits. No filtering components of any kind are required with speaker cable or trace lengths of 24in and beyond.
The MAX98304 is fully specified over the -40 to 85°C extended temperature range, and is packaged in a lead free, 1 x 1mm, 9 bump wlp.
