MAX9713 Datasheet, PDF (1/18 Pages) Maxim Integrated Products – 6W, Filterless, Spread-Spectrum Mono/Stereo Class D Amplifiers

19-3039; Rev 2; 9/04
6W, Filterless, Spread-Spectrum
Mono/Stereo Class D Amplifiers
General Description
The MAX9713/MAX9714 mono/stereo class D audio
power amplifiers provide class AB amplifier performance
with class D efficiency, conserving board space and
eliminating the need for a bulky heatsink. Using a class
D architecture, these devices deliver up to 6W while
offering greater than 85% efficiency. Proprietary and
patent-protected modulation and switching schemes
render the traditional class D output filter unnecessary.
The MAX9713/MAX9714 offer two modulation schemes:
a fixed-frequency mode (FFM), and a spread-spectrum
mode (SSM) that reduces EMI-radiated emissions due
to the modulation frequency. The device utilizes a fully
differential architecture, a full bridged output, and com-
prehensive click-and-pop suppression.
The MAX9713/MAX9714 feature high 76dB PSRR, low
0.07% THD+N, and SNR in excess of 100dB. Short-cir-
cuit and thermal-overload protection prevent the
devices from being damaged during a fault condition.
The MAX9713 is available in a 32-pin TQFN (5mm x
5mm x 0.8mm) package. The MAX9714 is available in a
32-pin TQFN (7mm x 7mm x 0.8mm) package. Both
devices are specified over the extended -40°C to
+85°C temperature range.
Applications
LCD Monitors
LCD TVs
Desktop PCs
LCD Projectors
High-End Notebook
Audio
Hands-Free Car
Phone Adaptors
Features
♦ Filterless Class D Amplifier
♦ Unique Spread-Spectrum Mode Offers 5dB
Emissions Improvement Over Conventional
Methods
♦ Up to 85% Efficient
♦ 6W Output Power into 8Ω
♦ Low 0.07% THD+N
♦ High PSRR (76dB at 1kHz)
♦ 10V to 25V Single-Supply Operation
♦ Differential Inputs Minimize Common-Mode Noise
♦ Pin-Selectable Gain Reduces Component Count
♦ Industry-Leading Integrated Click-and-Pop
Suppression
♦ Low Quiescent Current (18mA)
♦ Low-Power Shutdown Mode (0.2µA)
♦ Short-Circuit and Thermal-Overload Protection
♦ Available in Thermally Efficient, Space-Saving
Packages
32-Pin TQFN (5mm x 5mm x 0.8mm)–MAX9713
32-Pin TQFN (7mm x 7mm x 0.8mm)–MAX9714
Ordering Information
PART
MAX9713ETJ
MAX9714ETJ
TEMP RANGE
-40^oC to +85^oC
-40^oC to +85^oC
*EP = Exposed paddle.
PIN-PACKAGE
32 TQFN-EP*
32 TQFN-EP*
AMP
Mono
Stereo
Block Diagrams
0.47µF
IN+
MAX9713
OUT+
0.47µF
H-BRIDGE
IN-
OUT-
0.47µF
INL+
0.47µF
INL-
MAX9714
H-BRIDGE
OUTL+
OUTL-
0.47µF
INR+
0.47µF
INR-
H-BRIDGE
OUTR+
OUTR-
Pin Configurations appear at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
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