MAX9718CEBL+TG45

Audio Amplifiers Overview

The MAX9718CEBL+TG45 is a mono-channel, single-supply audio power amplifier from the DirectDrive series. It operates on a 2.7V to 5.5V supply and delivers 1.4W continuous average power into a 4Ω load with less than 1% THD+N. The device features a bridge-tied load (BTL) architecture and internally fixed gain of 3dB. It includes comprehensive click-and-pop suppression, a low-power shutdown mode drawing less than 100nA, and thermal protection. Available in a 9-bump UCSP package, it supports -40°C to +85°C operation.

Audio Amplifiers Feature Summary

• Bridge-tied load (BTL) architecture for high-quality audio amplification
• Integrated industry-leading click-and-pop suppression circuitry
• Low-power shutdown mode reducing quiescent current to under 100nA
• Internally fixed gain configuration to minimize external component count

Audio Amplifiers Applications

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

Audio Amplifiers Procurement Notes

Verify the specific suffix TG45 indicates protective die coating and lead-free/RoHS compliance. Confirm the CE designation corresponds to the 3dB fixed gain variant. Ensure the B suffix matches the required 3x3 UCSP package type. Cross-reference the top marking ADX with the ordering information table to validate the exact revision and manufacturing details before procurement.

Audio Amplifiers Selection Notes

Select this part for portable applications requiring a compact mono amplifier solution. The fixed 3dB gain simplifies design by eliminating external resistors. Verify that the 4Ω load impedance aligns with the 1.4W power rating specifications. Consider the UCSP package dimensions for board space constraints. Ensure the system voltage remains within the 2.7V to 5.5V operational range.

Audio Amplifiers Part Context

This component belongs to the MAX9718/MAX9719 family of low-cost differential input audio power amplifiers. The MAX9718 variant provides single-channel output, while the MAX9719 offers stereo capability. Both share similar architectures but differ in channel count and pin configurations. This specific model represents a fixed-gain version optimized for internal speaker driving in mobile devices.

Audio Amplifiers Replacement Considerations

The datasheet notes the MAX9718 is pin-compatible with the LM4895. Specific electrical or functional substitutions are not documented in the provided source material.