Standard I 2S, left-justified, and TDM digital audio It is recommended that the DEV board be evaluated with The EV sys- tem comprises the MAX98390C or the MAX98390D Development Board (DEV board), Maxim’s Audio Interface Board III (AUDINT3), 5V power supply, reference micro- speaker, USB cable, DSM Sound Studio software, and MAX98390 evaluation software. DSM senses the voltage and current at the load and uses patented Maxim algorithms to unlock the full potential of the speaker. The MAX98390C/D evaluation system (EV system) eval- uates the MAX98390C or the MAX98390D boosted Class D audio amplifier with integrated Dynamic Speaker ManagementTM (DSM) IC. They are specified over the extended -40☌ to +85☌ temperature range.ĭesign Solution: Unleash the Full Potential of Your Micro Speakers ›įor stereo evaluation and design use a MAX98390EVSYS# board with a MAX98390-ST-AUX# stereo expansion board. ![]() The MAX98390D is available in a 0.5mm pitch, 30-bump wafer-level package. The MAX98390C is available in a 0.4mm pitch, 36-bump wafer-level package. Threshold, hysteresis, and attack-and-release rates are programmable. Patented active emissions limiting edge rate and overshoot control circuitry minimizes EMI and eliminates the need for output filtering found in traditional Class-D devices.Ī flexible brownout-detection engine (BDE) can be programmed to initiate various current limiting, signal limiting, and clip functions to prevent dips in battery voltage. Thermal and other status data can also be read from the I 2C interface. Either BCLK or MCLK can be used as the internal clock source providing system level flexibility. The PCM interface supports I 2S, left-justified, and 16-channel TDM formats as a slave or master device with I 2C control. Integrated IV sense and Dynamic Speaker Management allows louder, fuller audio while protecting the speaker against damage and improving sound quality. The boosted supply efficiently delivers up to 6.2W at 10% THD+N into a 4Ω load. The boost converter supports bypass mode for lower quiescent current and improved mid-power efficiency as well as envelope tracking which automatically adjusts the output voltage for maximum efficiency. ![]() The maximum boost converter output voltage is programmable from 6.5V to 10V in 0.125V increments from a battery voltage as low as 2.65V. The MAX98390 is a high-efficiency mono Class-D DSM smart amplifier that features an integrated boost converter, integrated Dynamic Speaker Management ™, and FET scaling for higher-efficiency at low output power.
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