MAX9718AEUB+T

Audio Amplifiers Overview

The MAX9718AEUB+T is a mono-channel, low-cost audio power amplifier from Analog Devices/Maxim Integrated. It operates on a single supply voltage ranging from 2.7V to 5.5V and delivers 1.4W of continuous average power per channel into a 4Ω load with less than 1% THD+N. The device features adjustable gain via external resistors, differential inputs for improved noise rejection, and a bridge-tied load (BTL) architecture that minimizes external component count. It includes comprehensive click-and-pop suppression circuitry and a low-power shutdown mode reducing quiescent current to under 100nA.

Audio Amplifiers Feature Summary

• Differential input structure enhances noise rejection and provides common-mode rejection capabilities.
• Bridge-tied load (BTL) architecture eliminates the need for DC-blocking capacitors while maximizing output power efficiency.
• Integrated industry-leading click-and-pop suppression circuitry ensures silent operation during power-up and shutdown sequences.
• Configurable shutdown polarity allows flexible system integration through active-high or active-low control options.

Audio Amplifiers Applications

• Mobile phones
• Personal digital assistants (PDAs)
• Portable electronic devices

Audio Amplifiers Procurement Notes

Verify the specific suffix 'AEUB' corresponds to the 10-pin μMAX package with adjustable gain and extended temperature range. Confirm RoHS compliance status as indicated by the '+' designation in ordering information. Ensure compatibility with the required thermal management solutions given the exposed pad requirement for heat dissipation in this package type.

Audio Amplifiers Selection Notes

Select this part when a mono-channel solution with adjustable gain is required for portable audio applications. It serves as a pin-compatible upgrade to the LM4895. Consider the 10-pin μMAX package constraints regarding board space and thermal performance. Verify that the external gain-setting resistor requirements align with the design bill of materials compared to fixed-gain alternatives.

Audio Amplifiers Part Context

This component belongs to the MAX9718/MAX9719 family of low-cost, mono/stereo audio power amplifiers designed for internal speaker driving in portable devices. The MAX9718 variant specifically provides a single-channel configuration, whereas the MAX9719 offers dual channels for stereo systems. Both share similar electrical characteristics and packaging options within the product line.

Audio Amplifiers Replacement Considerations

The datasheet identifies the LM4895 as a comparable device, noting the MAX9718 is a pin-compatible upgrade. No other specific substitute part numbers are explicitly confirmed in the provided documentation.