MAX9765ETJ+

Audio Amplifiers Overview

The MAX9765ETJ+ is a stereo audio amplifier integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single 2.7V to 5.5V supply and features a bridge-tied load (BTL) speaker amplifier, a stereo headphone amplifier, and a microphone preamplifier. The device delivers up to 750mW of continuous average power into a 4Ω load in speaker mode and up to 65mW into a 16Ω load in headphone mode. It includes a 2:1 input multiplexer for selecting multiple audio sources and utilizes an I²C-compatible interface for control.

Audio Amplifiers Feature Summary

• Integrates stereo BTL speaker amplifiers, stereo headphone amplifiers, and microphone preamplifiers within a compact package.
• Features click-and-pop suppression to eliminate audible transients during power-up and shutdown cycles.
• Includes a 2:1 input multiplexer allowing selection between multiple audio sources.
• Provides low-power shutdown mode and short-circuit protection with thermal-overload capabilities.

Audio Amplifiers Applications

• PDA Audio Systems
• Tablet PCs
• Cell Phones

Audio Amplifiers Procurement Notes

Verify the component authenticity through official manufacturer channels or authorized distributors. Confirm that the part number matches the exact suffix ETJ+ and corresponds to the specified 32-pin TQFN-EP package. Ensure compliance with RoHS directives as indicated in the product documentation before finalizing procurement.

Audio Amplifiers Selection Notes

Select this component when designing portable audio systems requiring integrated speaker, headphone, and microphone amplification. It is suitable for applications needing low distortion and high power-supply rejection ratio. Consider the I²C control interface and external gain setting requirements during the design phase.

Audio Amplifiers Part Context

The MAX9765ETJ+ belongs to the MAX9765/MAX9766/MAX9767 family of audio amplifiers. While the MAX9766 targets mono speaker playback and the MAX9767 omits the headphone amp, the MAX9765 specifically supports stereo speaker playback alongside stereo headphone output. All variants share the same small thin QFN package and operating voltage range.

Audio Amplifiers Replacement Considerations

The MAX9766ETJ+ and MAX9767ETJ+ are direct functional substitutes within the same family, sharing identical pinouts and packages. Verify specific feature requirements such as mono versus stereo speaker outputs or the necessity of a headphone amplifier before substituting.