MAX9730

PRODUCTION

2.4W, Single-Supply Class G Power Amplifier

Highest Output Power Speaker Amplifier From a Battery

Data Sheet (Rev. 5) Product Selection Table
Viewing:

Overview

  • 2.7V to 5.5V Operation
  • Integrated Charge-Pump Power Supply
  • 63% Efficiency (VCC = 5V, POUT = 1W)
  • 2.4W Output Power into 8Ω at VCC = 5V
  • Clickless/Popless Operation
  • Small Thermally Efficient Packages
    • 2mm x 2.5mm 20-Bump WLP
    • 4mm x 4mm 28-Pin TQFN

The MAX9730 features a mono Class G power amplifier with an integrated inverting charge-pump power supply. The charge pump can supply up to 500mA of peak output current over a 2.7VDC to 5.5VDC supply voltage range, guaranteeing up to 2.4W output power into an 8Ω load. The 2.4W output power allows for transient audio content to remain unclipped as the battery rail collapses over time.

The MAX9730 maximizes battery life by offering high-performance efficiency. Maxim's proprietary output stage provides efficiency levels greater than Class AB devices without the EMI penalties commonly associated with Class D amplifiers. High efficiency allows the MAX9730 to be packaged in a WLP package without derating the output power handling capability.

The device utilizes fully differential inputs and outputs, comprehensive click-and-pop suppression, shutdown control, and soft-start circuitry. The MAX9730 is fully specified over the -40°C to +85°C extended temperature range and is available in ultra-small, lead-free, 20-bump WLP (2mm x 2.5mm) and 28-pin TQFN (4mm x 4mm) packages.

Applications

  • Cellular Phones
  • Handheld Gaming Consoles
  • MP3 Players
  • Notebook Computers
  • Personal Media Players
  • Smartphones
MAX9730
2.4W, Single-Supply Class G Power Amplifier
MAX9730: Simplified Block Diagram
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project
Ask a Question

Documentation

Data Sheet 1

Reliability Data 1

Technical Articles 3

Learn More
Add to myAnalog

Add media to the Resources section of myAnalog, to an existing project or to a new project.

Create New Project

Software Resources

Can't find the software or driver you need?

Request a Driver/Software

Hardware Ecosystem

Parts Product Life Cycle Description
Audio Amplifiers 2
MAX9705
PRODUCTION 2.3W, Ultra-Low-EMI, Filterless, Class D Audio Amplifier
MAX9788
PRODUCTION 14VP-P, Class G Ceramic Speaker Driver
Modal heading
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project

Evaluation Kits

MAX9730EVKIT

Evaluation Kit for the MAX9730

Buy Now View Details

Features and Benefits

  • 5V Single-Supply Operation
  • Fully Differential Output
  • Delivers 2.4W into an 8Ω Speaker
  • Configurable Switching Frequency
  • Evaluates the MAX9730 in a 28-Pin TQFN (4mm x 4mm x 0.8mm) Package
  • MAX9730 IC Available in a 20-Bump UCSP (2mm x 2.5mm) Package
  • Fully Assembled and Tested

Product Details

The MAX9730 evaluation kit (EV kit) is a fully assembled and tested PCB that uses the MAX9730 Class G power amplifier to drive a bridge-tied-load (BTL) speaker in portable audio applications. Designed to operate from a 2.7V to 5.5VDC power supply, the EV kit accepts a single-ended or differential input signal. The EV kit provides a fully differential output capable of delivering 2.4W into an 8Ω speaker.
MAX9730EVKIT
Evaluation Kit for the MAX9730

Latest Discussions

No discussions on MAX9730 yet. Have something to say?

Start a Discussion on EngineerZone®

Recently Viewed