MAX9718AEUB+

Audio Amplifiers Overview

The MAX9718AEUB+ 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 a differential input structure for improved noise rejection and utilizes a bridge-tied load (BTL) architecture to minimize external component count. It includes adjustable gain options, a low-power shutdown mode reducing quiescent current to under 100nA, and comprehensive click-and-pop suppression circuitry.

Audio Amplifiers Feature Summary

• Bridge-tied load (BTL) architecture minimizes external components while delivering high-quality audio amplification.
• Differential input structure improves noise rejection and provides common-mode rejection capabilities.
• Comprehensive click-and-pop suppression circuitry reduces audible artifacts during startup and shutdown sequences.
• Low-power shutdown mode disables bias generators and significantly reduces quiescent current consumption.

Audio Amplifiers Applications

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

Audio Amplifiers Procurement Notes

Verify the specific suffix 'AEUB+' against the manufacturer's official datasheet to confirm package type, temperature range, and RoHS compliance status. Ensure compatibility with the required gain configuration and shutdown polarity settings before procurement. Cross-reference the ordering information table in the datasheet to validate pinout and thermal characteristics for your specific PCB layout requirements.

Audio Amplifiers Selection Notes

Select this component for portable applications requiring a single-channel BTL amplifier with minimal external parts. Choose based on the need for adjustable gain versus fixed gain variants within the MAX9718 family. Consider the 10-pin μMAX package constraints and ensure adequate thermal management via the exposed pad for the intended power dissipation levels at the target supply voltage.

Audio Amplifiers Part Context

This part belongs to the MAX9718/MAX9719 series of low-cost, mono/stereo audio power amplifiers designed for portable devices. The MAX9718 variant specifically serves as a mono amplifier, whereas the MAX9719 is a dual-channel stereo version. Both share similar electrical characteristics and packaging options, offering a pin-compatible upgrade path to older LM4895 designs.

Audio Amplifiers Replacement Considerations

The MAX9718 is explicitly documented as pin-compatible with the LM4895. Verify that the replacement meets the same 2.7V to 5.5V supply range and 1.4W output power specifications. Confirm that the thermal performance and package dimensions are suitable for the existing footprint.