MAX98307ETE+T

Audio Amplifiers Overview

The MAX98307ETE+T is a fully differential mono Class DG multilevel power amplifier with an integrated inverting charge pump, manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 2.6V to 5.25V and delivers up to 3.3W output power at 10% THD+N into an 8Ω load with a 68µH series inductor at 5V. The device features adjustable gain set by external resistors, a quiescent current of 1.85mA, and a shutdown current of less than 0.225µA. It utilizes a 16-pin TQFN package and supports an operating temperature range from -40°C to +85°C.

Audio Amplifiers Feature Summary

• Class DG multilevel modulation extends dynamic range using a charge-pump-generated negative rail for high efficiency across wide output power ranges.
• Active emissions limiting edge rate and overshoot control circuitry eliminates the need for external output filtering components.
• Integrated click-and-pop suppression minimizes audible transients during startup and shutdown sequences.
• Built-in thermal and overcurrent protection safeguards against catastrophic failure under fault conditions.

Audio Amplifiers Applications

• Cellular phones
• Smartphones
• Notebook computers
• VoIP phones
• Portable audio devices

Audio Amplifiers Procurement Notes

Verify the specific ordering suffix ETE+T corresponds to the 16-pin TQFN package variant with adjustable gain via external resistors. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer. Ensure the component matches the required thermal and electrical specifications for the target application environment before finalizing procurement orders.

Audio Amplifiers Selection Notes

Select this amplifier when filterless operation and high efficiency are critical for portable designs. The adjustable gain configuration allows flexibility for varying input signal levels compared to fixed-gain alternatives. Consider the 16-pin TQFN footprint for PCB space constraints while ensuring adequate thermal management through proper ground plane implementation.

Audio Amplifiers Part Context

This component belongs to the MAX98307/MAX98308 family of Class DG multilevel audio amplifiers. Unlike the MAX98308 which offers fixed gain options in a WLP package, the MAX98307 provides user-adjustable gain settings. Both variants share the same core architecture designed to reduce electromagnetic interference without external LC filters.

Audio Amplifiers Replacement Considerations

MAX98308ETE+T (Fixed Gain Variant)

Audio Amplifiers FAQ

How is the voltage gain configured for the MAX98307?

The voltage gain is adjustable and set by connecting external feedback resistors (RFB) and input resistors (RIN) according to the specified formula.

Does the MAX98307 require an external output filter?

No, the active emissions limiting and Class DG multilevel modulation eliminate the need for external output filtering components.