MAX9703ETJ+ Maxim Integrated Products, MAX9703ETJ+ Datasheet

IC AMP AUDIO PWR 18W MONO 32TQFN

MAX9703ETJ+

Manufacturer Part Number
MAX9703ETJ+
Description
IC AMP AUDIO PWR 18W MONO 32TQFN
Manufacturer
Maxim Integrated Products
Type
Class Dr
Datasheet
1.MAX9703ETJ.pdf (20 pages)

Specifications of MAX9703ETJ+

Output Type
1-Channel (Mono)
Max Output Power X Channels @ Load
18W x 1 @ 16 Ohm
Voltage - Supply
10 V ~ 25 V
Features
Depop, Differential Inputs, Mute, Short-Circuit and Thermal Protection, Shutdown
Mounting Type
Surface Mount
Package / Case
32-TQFN Exposed Pad
Product
Class-D
Output Power
15 mW
Common Mode Rejection Ratio (min)
60 dB
Thd Plus Noise
0.07 %
Operating Supply Voltage
10 V to 25 V
Supply Current
14 mA
Maximum Power Dissipation
1702 mW
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Input Signal Type
Differential
Minimum Operating Temperature
- 40 C
Supply Voltage (max)
25 V
Supply Voltage (min)
10 V
Amplifier Class
D
No. Of Channels
1
Supply Voltage Range
10V To 25V
Load Impedance
4ohm
Operating Temperature Range
-40°C To +85°C
Amplifier Case Style
TQFN
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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 protected
modulation and switching schemes render the traditional
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 95dB. 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 7; 3/06
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
________________________________________________________________ Maxim Integrated Products
IN+
IN-
H-BRIDGE
General Description
Spread-Spectrum, Class D Amplifiers
MAX9703
Hands-Free Car
Phone Adaptors
Automotive
10W Stereo/15W Mono, Filterless,
Applications
OUT+
OUT-
♦ Filterless Class D Amplifier
♦ Unique Spread-Spectrum Mode Offers 5dB
♦ Up to 78% Efficient (R
♦ Up to 88% Efficient (R
♦ 15W Continuous Output Power into 8Ω (MAX9703)
♦ 2x10W Continuous Output Power into 8Ω (MAX9704)
♦ 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
Note: All devices specified for over -40°C to +85°C operating
temperature range.
*EP = Exposed paddle.
+Denotes lead-free package.
MAX9703ETJ+
MAX9704ETJ+
Emissions Improvement Over Conventional
Methods
Packages
0.47μF
0.47μF
0.47μF
0.47μF
32-Pin TQFN (5mm x 5mm x 0.8mm)–MAX9703
32-Pin TQFN (7mm x 7mm x 0.8mm)–MAX9704
PART
INL+
INR+
INR-
INL-
H-BRIDGE
H-BRIDGE
PIN-PACKAGE
32 TQFN-EP*
32 TQFN-EP*
Ordering Information
MAX9704
L
L
= 8Ω)
= 16Ω)
Block Diagrams
OUTL+
OUTL-
OUTR+
OUTR-
Stereo
Mono
AMP
Features
PKG CODE
T3255-3
T3277-2
1

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MAX9703ETJ+ Summary of contents

Page 1

... Available in Thermally Efficient, Space-Saving Packages 32-Pin TQFN (5mm x 5mm x 0.8mm)–MAX9703 32-Pin TQFN (7mm x 7mm x 0.8mm)–MAX9704 Applications PART MAX9703ETJ+ MAX9704ETJ+ Note: All devices specified for over -40°C to +85°C operating temperature range. *EP = Exposed paddle. +Denotes lead-free package. 0.47μF INL+ 0.47μ ...

Page 2

Stereo/15W Mono, Filterless, Spread-Spectrum, Class D Amplifiers ABSOLUTE MAXIMUM RATINGS (All voltages referenced to PGND PGND, AGND .............................................................30V DD OUTR_, OUTL_, C1N..................................-0. C1P............................................(V - 0.3V) to (CHOLD + 0.3V) DD CHOLD ........................................................(V All Other Pins ...

Page 3

Spread-Spectrum, Class D Amplifiers ELECTRICAL CHARACTERISTICS (continued) = 15V, AGND = PGND = 0V, SHDN ≥ PGND (f = 660kHz), R connected between OUTL+ and OUTL- and OUTR+ and OUTR noted. Typical values ...

Page 4

Stereo/15W Mono, Filterless, Spread-Spectrum, Class D Amplifiers (33µH with 4Ω, 68µH with 8Ω, part in SSM mode, 136µH with 16Ω, measurement BW = 22Hz to 22kHz, unless otherwise noted.) TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY ...

Page 5

Spread-Spectrum, Class D Amplifiers (33µH with 4Ω, 68µH with 8Ω, part in SSM mode, 136µH with 16Ω, measurement BW = 22Hz to 22kHz, unless otherwise noted.) EFFICIENCY vs. OUTPUT POWER 100 R = 16Ω ...

Page 6

Stereo/15W Mono, Filterless, Spread-Spectrum, Class D Amplifiers (33µH with 4Ω, 68µH with 8Ω, part in SSM mode, 136µH with 16Ω, measurement BW = 22Hz to 22kHz, unless otherwise noted.) OUTPUT FREQUENCY SPECTRUM 20 SSM MODE A = 16dB 0 ...

Page 7

Stereo/15W Mono, Filterless, Spread-Spectrum, Class D Amplifiers PIN NAME MAX9703 MAX9704 23, 24 PGND C1N 6 6 C1P 7 7 CHOLD ...

Page 8

Stereo/15W Mono, Filterless, Spread-Spectrum, Class D Amplifiers Detailed Description The MAX9703/MAX9704 filterless, Class D audio power amplifiers feature several improvements to switch- mode amplifier technology. The MAX9703 is a mono amplifier, the MAX9704 is a stereo amplifier. These devices ...

Page 9

Spread-Spectrum, Class D Amplifiers 100 Figure 1. MAX9704 EMI Spectrum, 9in PC Board trace, 3in Twisted-Pair Speaker Cable _______________________________________________________________________________________ 10W Stereo/15W Mono, Filterless MAX9704 C ...

Page 10

Stereo/15W Mono, Filterless, Spread-Spectrum, Class D Amplifiers EFFICIENCY vs. OUTPUT POWER 100 90 MAX9704 CLASS OUTPUT POWER (W) Figure ...

Page 11

Spread-Spectrum, Class D Amplifiers The MAX9703/MAX9704 feature an internally set, logic- selectable gain. The G1 and G2 logic inputs set the gain of the MAX9703/MAX9704 speaker amplifier (Table 2). Table 2. Gain Selection ...

Page 12

Stereo/15W Mono, Filterless, Spread-Spectrum, Class D Amplifiers used if a design is failing radiated emissions due to board layout or cable length, or the circuit is near EMI- sensitive devices. Use a ferrite bead filter when radiat- ed frequencies ...

Page 13

Spread-Spectrum, Class D Amplifiers Additional improvements are possible if all the traces from the device are made as wide as possible. Although the IC pins are not the primary thermal path of the pack- age, they do provide a small ...

Page 14

Stereo/15W Mono, Filterless, Spread-Spectrum, Class D Amplifiers 0.18μF 10V 0.01μF LOGIC INPUTS SHOWN FOR LOGIC HIGH > 2.5V. IN CHOOSE CAPACITOR VOLTAGE RATING ≥ V † *SYSTEM-LEVEL REQUIREMENT. 14 ______________________________________________________________________________________ 10V TO 25V 100μF* † 25V ...

Page 15

Stereo/15W Mono, Filterless, Spread-Spectrum, Class D Amplifiers 100μF* † 25V 0.1μF 25V 1 2 PGND 0.47μF 10 INL+ MODULATOR 0.47μF 9 INL- 19 FS1 V REG OSCILLATOR FS2 20 V REG 0.47μF INR+ 16 MODULATOR 0.47μF INR ...

Page 16

Stereo/15W Mono, Filterless, Spread-Spectrum, Class D Amplifiers OUTL- OUTL+ CODEC OUTR+ OUTR- *BULK CAPACITANCE, IF NEEDED. 16 ______________________________________________________________________________________ V DD 100μF* 1μ 0.47μF INL- 0.47μF INL+ 0.47μF INR+ 0.47μF INR- SS 0.18μF SHDN 1μF INL- 1μF 15kΩ ...

Page 17

Stereo/15W Mono, Filterless, Spread-Spectrum, Class D Amplifiers TOP VIEW N.C. 25 N.C. 26 OUT- 27 OUT- 28 MAX9703 OUT+ 29 OUT+ 30 N. ...

Page 18

Stereo/15W Mono, Filterless, Spread-Spectrum, Class D Amplifiers (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) E E/2 D ______________________________________________________________________________________ DETAIL A e ...

Page 19

Spread-Spectrum, Class D Amplifiers (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) ______________________________________________________________________________________ 10W Stereo/15W Mono, Filterless, Package Information (continued) PACKAGE OUTLINE 32, 44, 48, ...

Page 20

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 20 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2006 Maxim Integrated Products Package Information (continued registered trademark of Maxim Integrated Products, Inc ...

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