MAX9704ETJ Maxim, MAX9704ETJ Datasheet
MAX9704ETJ
Manufacturer Part Number
MAX9704ETJ
Description
15W / Filterless / Spread-Spectrum Mono/Stereo Class D Amplifiers
Manufacturer
Maxim
Datasheet
1.MAX9704ETJ.pdf
(18 pages)
The MAX9703/MAX9704 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 15W while
offering up to 78% efficiency. Proprietary and patent-pro-
tected modulation and switching schemes render the tra-
ditional class D output filter unnecessary.
The MAX9703/MAX9704 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 MAX9703/MAX9704 feature high 80dB 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 MAX9703 is available in a 32-pin TQFN (5mm x
5mm x 0.8mm) package. The MAX9704 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.
19-3160; Rev 1; 3/04
Pin Configurations appear at end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
LCD TVs
LCD Monitors
Desktop PCs
LCD Projectors
0.47µF
0.47µF
IN+
IN-
________________________________________________________________ Maxim Integrated Products
H-BRIDGE
General Description
MAX9703
Hands-Free Car
Phone Adaptors
Automotive
Applications
15W, Filterless, Spread-Spectrum
Mono/Stereo Class D Amplifiers
OUT+
OUT-
*EP = Exposed paddle.
MAX9703ETJ
MAX9704ETJ
Filterless Class D Amplifier
Unique Spread-Spectrum Mode Offers 5dB
Emissions Improvement Over Conventional
Methods
Up to 78% Efficient
15W Output Power into 8Ω
Up to 20W Peak Power
Low 0.07% THD+N
High PSRR (80dB at 1kHz)
10V to 25V Single-Supply Operation
Differential Inputs Minimize Common-Mode Noise
Pin-Selectable Gain Reduces Component Count
Industry-Leading Click-and-Pop Suppression
Low Quiescent Current (24mA)
Low-Power Shutdown Mode (0.2µA)
Short-Circuit and Thermal-Overload Protection
Available in Thermally Efficient, Space-Saving
Packages
PART
32-Pin TQFN (5mm x 5mm x 0.8mm)–MAX9703
32-Pin TQFN (7mm x 7mm x 0.8mm)–MAX9704
0.47µF
0.47µF
0.47µF
0.47µF
INR+
INL+
INR-
INL-
TEMP RANGE
-40
-40
H-BRIDGE
H-BRIDGE
o
o
C to +85
C to +85
Ordering Information
MAX9704
o
o
C
C
Block Diagrams
PIN-PACKAGE
32 TQFN-EP*
32 TQFN-EP*
OUTL+
OUTL-
OUTR+
OUTR-
Features
Stereo
Mono
AMP
1
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