MAX98400AETX+

The MAX98400AETX+ is a stereo, high power class D amplifier in 36 pin TQFN package. This amplifier provides high performance and thermally efficient amplifier solutions. The MAX98400A delivers 2x20W into 8ohm loads or 1x40W into a 4ohm load. An integrated limiting circuit prevents output clipping distortion, protects small speakers from transient voltages and reduces power dissipation. A thermal foldback feature can be enabled to automatically reduce output power at above a junction temperature of +120°C. Traditional thermal protection is also available in addition to robust overcurrent protection. The device operates from a single 8V to 28V supply by eliminating the need for regulated power supply. Filterless modulation allows the MAX98400A to pass EN55022B EMI limits with 1m cables using only a low cost ferrite bead and small value capacitor on each output. Comprehensive click and pop reduction circuitry minimizes noise coming into and out of shutdown.

• Eight digitally controlled gain settings
• Operating temperature range from -40°C to 85°C
• Low EMI, active emissions limiting
• Clipping limiter and thermal foldback
• Low quiescent current of 10mA (dual supply mode) and 16mA (single supply mode)
• Output power of 44W (mono, RL = 4ohm, fIN = 1KHz)
• Thermal and overcurrent protection
• Common mode rejection ratio of 60dB and PSRR of 67dB (1KHz, 100mVP-P ripple)
• 90% efficiency from 12V supply

Applications

Signal Processing, Audio, Consumer Electronics, Portable Devices

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party