Maxim > Products > Audio > MAX9715

MAX9715

2.8W, Low-EMI, Stereo, Filterless Class D Audio Amplifier

High-Efficiency Audio Amplifier Provides 2.8W of Power into a 4Ω Speaker

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX9715 high-efficiency, stereo, Class D audio power amplifier provides up to 2.8W per channel into a 4Ω speaker with a 5V supply. Maxim's second-generation Class D technology features robust output protection, high efficiency, and high power-supply rejection (PSRR) while eliminating the need for output filters. Selectable gain settings, +10.5dB or +9.0dB, adjust the amplifier gain to suit the audio input level and speaker load.

The MAX9715 features high PSRR (71dB at 1kHz), allowing for operation from noisy supplies without additional regulation. Comprehensive click-and-pop suppression eliminates audible clicks and pops at startup and shutdown. The MAX9715 operates from a single 5V supply and consumes only 12mA of supply current. Integrated shutdown control reduces supply current to less than 100nA.

The MAX9715 is fully specified over the extended -40°C to +85°C temperature range and is available in thermally enhanced 16-pin TQFN-EP package.

Data Sheet

Download	Rev 2	(PDF, 344kB)
E-Mail

An evaluation kit is available: MAX9715EVKIT

Key Features

5V Single-Supply Operation
Spread-Spectrum Modulator Reduces EMI
2.8W, Class D, Stereo Speaker Amplifier (4Ω)
Filterless Class D Requires No LC Output Filter
High PSRR (71dB at 1kHz)
86% Efficiency (R_L = 8Ω, P_OUT = 1W)
Low-Power Shutdown Mode
Integrated Click-and-Pop Suppression
Low Total Harmonic Distortion: 0.06% at 1kHz
Short-Circuit and Thermal Protection
Internal Gain, +9.0dB or +10.5dB
Available in Space-Saving Packages
- 16-Pin Thin QFN-EP (5mm x 5mm x 0.8mm)

Applications/Uses

High-End Notebook Audio
LCD Projectors
Multimedia Docking Stations
Portable Audio

Key Specifications:

Speaker Amplifiers

Part Number

Class

Spkr. Amp. V_CC
(V)

Spkr. Amp. I_CC
(mA)

P_OUT into 4Ω @ 1% THD+N
(W)

P_OUT into 4Ω @ 10% THD+N
(W)

P_OUT into 8Ω @ 1% THD+N
(W)

P_OUT into 8Ω @ 10% THD+N
(W)

Spkr. Amp. Half Pwr. THD+N
(%)

SNR
(dB)

PSRR
(dB)

Spkr. Amp. Ext. Gain

Spkr. Amp. Fxd. Gain
(V/V)

Channels

Budgetary Price

min

max

typ

min

A- Weighted

min

max

See Notes

MAX9715

4.5

5.5

12.8

2.3

2.8

1.4

1.5

0.09

2.8

3.4

$0.98 @1k

See All Speaker Amplifiers (44)

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Diagram

Block Diagram

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-3589 Rev 2; 2008-08-15
This page last modified: 2010-05-24