MAX98306ETD+T

Audio Amplifiers Overview

The MAX98306ETD+T is a stereo Class D audio amplifier from Analog Devices/Maxim Integrated, housed in a 14-pin TDFN package. It delivers up to 3.7W output power at 3Ω with a 5V supply and operates within a 2.6V to 5.5V voltage range. The device features five pin-selectable gain settings (6dB to 18dB) via the GAIN input. It incorporates spread-spectrum modulation and active emissions limiting for filterless operation, achieving high efficiency of up to 92%. Quiescent current is 2.0mA at 3.7V, supporting portable applications.

Audio Amplifiers Feature Summary

• Filterless Class D architecture utilizing spread-spectrum modulation and active emissions limiting to eliminate external LC filters while maintaining high efficiency.
• Five selectable voltage gains configured through a single GAIN pin, allowing flexible system integration without additional components.
• Comprehensive click-and-pop suppression circuitry that minimizes audible transients during startup and shutdown sequences.
• Integrated thermal overload protection and speaker current limit functionality to ensure robust operation under fault conditions.

Audio Amplifiers Applications

• Smartphones
• Tablets
• Cellular Phones
• Accessory Speakers
• MP3 Players

Audio Amplifiers Procurement Notes

Verify component authenticity by checking the top marking (+AEV) against the datasheet specifications. Confirm the package type is 14-pin TDFN (3mm x 3mm x 0.75mm). Ensure the operating temperature range meets requirements of -40°C to +85°C. Cross-reference the ordering information to validate the specific suffix and RoHS compliance status before finalizing procurement.

Audio Amplifiers Selection Notes

Select this amplifier for designs requiring high efficiency and minimal board space due to its filterless operation. Consider the five available gain settings when matching input signal levels to avoid clipping or excessive noise. Evaluate the 2.0mA quiescent current consumption for battery-powered devices. Ensure the load impedance and inductance meet the minimum requirements for stable filterless performance.

Audio Amplifiers Part Context

This component belongs to the MAX98306 family of stereo Class D amplifiers. It is designed to provide Class AB audio quality with Class D efficiency. The ET suffix indicates an extended temperature range (-40°C to +85°C), and the D+ suffix denotes the 14-pin TDFN package with lead-free/RoHS compliance. It serves as a compact solution for portable audio systems.

Audio Amplifiers Replacement Considerations

No public confirmed substitute part numbers are documented in the provided source material.

Audio Amplifiers FAQ

How is the voltage gain selected on the MAX98306ETD+T?

The voltage gain is selected using the GAIN pin. It supports five settings: 18dB (connected to PGND), 15dB (via 100kΩ resistor to PGND), 12dB (connected to PVDD), 9dB (via 100kΩ resistor to PVDD), and 6dB (unconnected).

Does the MAX98306 require an output LC filter?

No, the MAX98306 does not require an output LC filter. It utilizes spread-spectrum modulation and active emissions limiting to meet EMI standards without external filtering components.

What is the typical quiescent current consumption?

The typical quiescent current is 2.0mA at a 3.7V supply voltage, which helps extend battery life in portable applications.