MAX9706, MAX9707 3-Channel, 2.3W, Filterless Class D Amplifiers With Active Crossover

The MAX9706 MAX9707 combine three high-efficiency Class D Amplifiers with an active crossover to provide stereo highpass outputs, and a mono lowpass output. All three channels deliver up to 2.3W at 1% THD+N per channel into 4 when operating from a 5V supply.
An internal active Filter processes the stereo inputs (left and right) into stereo highpass and mono lowpass outputs. The crossover frequency is pin-selectable to four different frequencies to accommodate a variety of speaker configurations. The internal Class D Amplifiers feature low-EMI, spread-spectrum outputs. No output Filters are required.
The MAX9706 features Maxim's patented DirectDrive Headphone Amplifier providing ground-referenced Headphone outputs without the need for bulky DC-coupling capacitors. The Headphone outputs are capable of delivering 95mW per channel into 16 from a 3.3V supply, and are protected against ESD up to 8kV.
The MAX9706 MAX9707 feature pin-programmable gain, synchronization inputs and outputs, and a shutdown mode that reduces supply current to less than 1A. All Amplifiers feature click-and-pop suppression circuitry. Both devices are fully specified over the -40C to +85C extended temperature range and are available in the thermally enhanced 36-pin (6mm x 6mm x 0.8mm) thin QFN package.
By Maxim Integrated Products