QuickView - MAX9715 2.8W, Low-EMI, Stereo, Filterless Class D Audio Amplifier

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MAX9715 2.8W, Low-EMI, Stereo, Filterless Class D Audio Amplifier

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

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Description

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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.

Key Features Applications/Uses

5V Single-Supply Operation
Patented 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)

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

Key Specifications: Speaker Amplifiers

Part Number

Class

Speaker Amp. V_CC (min) (V)

Speaker Amp. V_CC (max) (V)

Speaker Amp. I_CC (typ) (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)

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

SNR, A-weighted (dB)

PSRR (db)

Speaker Amp. External Gain

Speaker Amp. Fixed Gain (min) (V/V)

Speaker Amp. Fixed Gain (max) (V/V)

Number of Channels

Price^**

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 (30)

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.

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