MAX9718FEBL+

Audio Amplifiers Overview

The MAX9718FEBL+ is a mono audio power amplifier from the Maxim Integrated MAX9718/MAX9719 family. 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 at a +5V supply. The device features a differential input structure for improved noise rejection, an internally fixed gain of 3dB, and a low-power shutdown mode that reduces quiescent current to less than 100nA. It utilizes a bridge-tied load (BTL) architecture to minimize external component count and includes comprehensive click-and-pop suppression circuitry.

Audio Amplifiers Feature Summary

• Features a differential input structure that improves noise rejection and provides common-mode rejection capabilities.
• Incorporates industry-leading click-and-pop suppression circuitry to reduce audible artifacts during startup and shutdown.
• Includes a low-power shutdown mode that disables bias generators and reduces quiescent current consumption significantly.
• Utilizes a bridge-tied load (BTL) architecture that minimizes external component count while delivering high-quality audio amplification.

Audio Amplifiers Applications

• Mobile Phones
• PDAs
• Portable Devices

Audio Amplifiers Procurement Notes

Verify the specific suffix 'BL+' against official Analog Devices documentation to confirm package type and lead-free compliance. Ensure the fixed gain configuration matches the design requirements, as this variant differs from adjustable gain models. Confirm thermal management strategies align with the exposed pad requirements for the UCSP package to maintain reliability within the specified temperature range.

Audio Amplifiers Selection Notes

Select the MAX9718FEBL+ when a mono BTL amplifier with a fixed 3dB gain is required for portable applications. This model is suitable for designs needing internal gain setting to reduce footprint compared to adjustable gain variants. Consider the UCSP package size constraints and verify that the 2.7V to 5.5V supply range meets the system's power budget and performance needs.

Audio Amplifiers Part Context

This component belongs to the MAX9718/MAX9719 series of low-cost, mono/stereo audio power amplifiers designed for portable devices. The MAX9718 serves as the mono version, while the MAX9719 is the stereo counterpart. Both share similar architectures but differ in channel count and pin configurations. The series is known for its efficiency and compact packaging options like UCSP and TDFN.

Audio Amplifiers Replacement Considerations

The MAX9718 is pin-compatible with the LM4895. Verify functional equivalence if substituting with other mono BTL amplifiers from different manufacturers, ensuring gain settings and shutdown logic match the original design specifications.