Datasheet MAX9708ETN+D - Maxim Audio Amplifiers 20W/40W Filterless Class D Amplifier — Ficha de datos

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Manufacturer: Maxim

Description: Audio Amplifiers 20W/40W Filterless Class D Amplifier

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Docket:
19-3678; Rev 2; 3/06
KIT ATION EVALU ABLE AVAIL
20W/40W, Filterless, Spread-Spectrum, Mono/Stereo, Class D Amplifier
General Description
The MAX9708 mono/stereo, Class D audio power amplifier delivers up to 2 x 21W into an 8 stereo mode and 1 x 42W into a 4 load in mono mode while offering up to 87% efficiency.

The MAX9708 provides Class AB amplifier performance with the benefits of Class D efficiency, eliminating the need for a bulky heatsink and conserving power. The MAX9708 operates from a single +10V to +18V supply, driving the load in a BTL configuration. The MAX9708 offers two modulation schemes: a fixedfrequency modulation (FFM) mode, and a spread-spectrum modulation (SSM) mode that reduces EMI-radiated emissions. The MAX9708 can be synchronized to an external clock from 600kHz to 1.2MHz. A synchronized output allows multiple units to be cascaded in the system. Features include fully differential inputs, comprehensive click-and-pop suppression, and four selectable-gain setting

Specifications:

• Audio Load Resistance: 8 Ohm
• Available Set Gain: 36 dB
• Common Mode Rejection Ratio (Min): 70 dB
• Input Signal Type: Differential
• Maximum Power Dissipation: 3.81 W
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 10 V to 18 V
• Operating Temperature Range: - 40 C to + 85 C
• Output Power: 21 W
• Output Signal Type: Differential
• Output Type: 1-Channel Mono, 2-Channel Stereo
• Package / Case: TQFN-56
• Packaging Type: Tube
• Product: Class-D
• Supply Current: 20 mA
• Supply Type: Single
• Supply Voltage Range: 10 V to 18 V
• THD plus Noise: 0.1 %
• RoHS: Yes