MAX9718FEBL+TG45

Audio Amplifiers Overview

The MAX9718FEBL+TG45 is a mono audio power amplifier from the MAX9718/MAX9719 family, manufactured by Analog Devices Inc./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 bridge-tied load (BTL) architecture, differential inputs for improved noise rejection, and internally fixed gain options including 0dB, 3dB, and 6dB. It includes 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 component count while providing 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 amplifiers to reduce quiescent current consumption.

Audio Amplifiers Applications

• Mobile Phones
• PDAs
• Portable Devices

Audio Amplifiers Procurement Notes

Verify the specific suffix +TG45 indicates protective die coating when sourcing this component. Confirm package availability as the UCSP format may have specific handling requirements. Ensure compatibility with existing board layouts designed for the standard MAX9718 series before procurement.

Audio Amplifiers Selection Notes

Select this part for portable applications requiring a mono BTL amplifier with minimal external components. Choose the internal fixed gain variant to simplify design and reduce footprint. Consider the thermal dissipation characteristics relative to the ambient temperature and load impedance for optimal performance.

Audio Amplifiers Part Context

This component belongs to the MAX9718/MAX9719 series of low-cost, mono/stereo, 1.4W differential audio power amplifiers. The MAX9718 variant specifically serves as a single-channel amplifier, whereas the MAX9719 is a dual-channel stereo version. Both share similar electrical characteristics and packaging options within the product line.

Audio Amplifiers Replacement Considerations

The MAX9718 is pin-compatible with the LM4895. Verify that any substitute maintains the same BTL configuration and gain settings to ensure functional equivalence in the target application.