MAX9760ETI+

Audio Amplifiers Overview

The MAX9760ETI+ is a stereo audio power amplifier from the MAX9760–MAX9763 family, integrating a 3W bridge-tied load (BTL) speaker amplifier and a stereo single-ended headphone amplifier. It operates on a single 4.5V to 5.5V supply and features a 100dB PSRR at 1kHz. The device delivers up to 3W into a 3Ω load in speaker mode and 200mW into a 16Ω load in headphone mode. It includes a 2:1 input multiplexer, headphone sensing, and click-and-pop suppression. Control is via an I²C-compatible interface or parallel logic inputs.

Audio Amplifiers Feature Summary

• Integrates a 3W BTL stereo speaker amplifier with a 200mW stereo headphone amplifier
• Features industry-leading 100dB PSRR for operation on noisy digital supplies
• Includes a 2:1 input multiplexer for selecting between multiple audio sources
• Provides automatic headphone detection through a dedicated sense input

Audio Amplifiers Applications

• Notebooks
• Portable DVD Players
• Tablet PCs
• PC Audio Peripherals
• Camcorders

Audio Amplifiers Procurement Notes

Verify the specific ordering suffix ETI corresponds to the 28-pin thin QFN package when sourcing this component. Confirm that the required control interface matches the I²C-compatible serial interface of the MAX9760 variant rather than the parallel logic interface used by other family members. Ensure the design accommodates the specified 4.5V to 5.5V single-supply voltage range.

Audio Amplifiers Selection Notes

Select the MAX9760ETI+ when an integrated solution combining high-power speaker amplification with low-power headphone driving is required. This part is suitable for designs needing robust noise immunity due to its high PSRR. Consider the I²C interface if software-controlled gain switching and mute functions are necessary for the application architecture.

Audio Amplifiers Part Context

This component belongs to the MAX9760–MAX9763 family of stereo and mono audio power amplifiers. While the MAX9760 and MAX9762 utilize an I²C-compatible serial interface, the MAX9761 and MAX9763 use parallel logic inputs. All variants share the same core amplifier architecture and packaging options, differing primarily in their control mechanisms.

Audio Amplifiers Replacement Considerations

The MAX9760EUI serves as a direct pin-compatible replacement offering the same functionality in a TSSOP-EP package instead of the thin QFN format.