MAX9714 Maxim Integrated Products, Inc., MAX9714 Datasheet

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MAX9714

Manufacturer Part Number
MAX9714
Description
6w, Filterless, Spread-spectrum Mono/stereo Class D Amplifiers
Manufacturer
Maxim Integrated Products, Inc.
Datasheet

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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 95dB. 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.
19-3039; Rev 6; 12/06
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 Monitors
LCD TVs
Desktop PCs
LCD Projectors
0.47µF
0.47µF
IN+
IN-
________________________________________________________________ Maxim Integrated Products
H-BRIDGE
General Description
MAX9713
High-End Notebook
Audio
Hands-Free Car
Phone Adaptors
Applications
OUT+
OUT-
6W, Filterless, Spread-Spectrum
Mono/Stereo Class D Amplifiers
♦ Filterless Class D Amplifier
♦ Unique Spread-Spectrum Mode Offers 5dB
♦ 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
♦ Low Quiescent Current (18mA)
♦ Low-Power Shutdown Mode (0.2µA)
♦ Short-Circuit and Thermal-Overload Protection
♦ Available in Thermally Efficient, Space-Saving
*EP = Exposed paddle.
+Denotes lead-free package.
MAX9713ETJ+
MAX9714ETJ+
Emissions Improvement Over Conventional
Methods
Suppression
Packages
PART
32-Pin TQFN (5mm x 5mm x 0.8mm)–MAX9713
32-Pin TQFN (7mm x 7mm x 0.8mm)–MAX9714
0.47µF
0.47µF
0.47µF
0.47µF
INR+
INL+
INL-
INR-
TEMP RANGE
-40
-40
H-BRIDGE
H-BRIDGE
o
o
C to +85
C to +85
Ordering Information
MAX9714
o
o
C
C
Block Diagrams
PIN-PACKAGE
32 TQFN-EP*
32 TQFN-EP*
OUTL+
OUTL-
OUTR+
OUTR-
Features
Stereo
Mono
AMP
1

Related parts for MAX9714

MAX9714 Summary of contents

Page 1

... 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° ...

Page 2

... Continuous Power Dissipation (T Single-Layer Board: + 0.3V) MAX9713 32-Pin TQFN (derate 21.3mW/°C DD above +70°C)..........................................................1702.1mW - 0.3V) to +40V MAX9714 32-Pin TQFN (derate 27mW/°C DD above +70°C)..........................................................2162.2mW Multilayer Board: MAX9713 32-Pin TQFN (derate 34.5mW/°C above +70°C)..........................................................2758.6mW MAX9714 32-Pin TQFN (derate 37mW/°C above +70° ...

Page 3

ELECTRICAL CHARACTERISTICS (continued) = 15V, GND = PGND = 0V, SHDN ≥ GND (f = 330kHz), R connected between OUTL+ and OUTL- and OUTR+ and OUTR Typical values are +25°C.) (Notes ...

Page 4

Filterless, Spread-Spectrum Mono/Stereo Class D Amplifiers (136µH with 16Ω, 68µH with 8Ω, part in SSM mode, unless otherwise noted.) TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY +15V 13dB 8Ω L ...

Page 5

SSM mode, unless otherwise noted.) TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER 100 V = 15V 13dB 1kHz 8Ω SSM ...

Page 6

... SSM MODE OUT 1kHz R = 8Ω L -20 A-WEIGHTED RBW = 10kHz -40 -60 -80 -100 -120 0 5k 10k 15k FREQUENCY (Hz) TURN-ON/TURN-OFF RESPONSE C = 180pF SS SHDN MAX9714 OUTPUT f = 1kHz R = 8Ω L 10M 100M 0.35 0.30 0.25 0.20 0.15 0.10 0. WIDEBAND OUTPUT SPECTRUM (FFM MODE) 0 -10 -20 -30 ...

Page 7

... PIN NAME MAX9713 MAX9714 23, 24 PGND C1N 6 6 C1P 7 7 CHOLD 8, 17, 20, 25, 8 N.C. 26, 31 REG 10 13 AGND 11 — 12 — IN SHDN FS1 19 20 FS2 27, 28 — OUT- 29, 30 — ...

Page 8

... This can be done at any time and not affect audio reproduction OUT- OUT+ Figure 1. MAX9714 Outputs with No Input Signal Applied 8 _______________________________________________________________________________________ Table 1. Operating Modes FS1 FS2 ...

Page 9

... PWM scheme uses large differential output swings (2 currents. Any parasitic resistance in the filter compo- nents results in a loss of power, lowering the efficiency. The MAX9713/MAX9714 do not require an output filter. SS The devices rely on the inherent inductance of the speaker coil and the natural filtering of both the speak- ...

Page 10

... The signals appear at the amplifiers’ inputs as common- mode noise. A differential input amplifier amplifies the difference of the two inputs, any signal common to both inputs is canceled. The MAX9713/MAX9714 can be configured as single- ended input amplifiers by capacitively coupling either Gain Selection input to GND and driving the other input (Figure 5). ...

Page 11

... PGND with a 0.1µF capacitor as close to each V as possible. A low-impedance, high-current power-sup- ply connection to V capacitance should be added as required depending on the application and power-supply characteristics. AGND and PGND should be star connected to system ground. Refer to the MAX9714 Evaluation Kit for layout guidance OUTR ...

Page 12

Filterless, Spread-Spectrum Mono/Stereo Class D Amplifiers 0.47µF 0.47µF V REG V REG V REG V REG V REG 0.18µF 10V 0.01µF 10V LOGIC INPUTS SHOWN FOR A †CHOOSE A CAPACITOR VOLTAGE RATING ≥ V *SYSTEM-LEVEL REQUIREMENT. 12 ______________________________________________________________________________________ 10V ...

Page 13

... REQUIREMENT. ______________________________________________________________________________________ Functional Diagrams (continued) 10V TO +25V 0.1µF 25V† PGND DD DD OUTL+ 32 OUTL+ 31 H-BRIDGE OUTL- 30 OUTL- 29 OUTR+ 28 OUTR+ 27 H-BRIDGE OUTR- 26 OUTR- 25 MAX9714 6 C1P C1 CHARGE PUMP 0.1µF 5 25V† C1N CHOLD 7 C2 1µF 25V† ...

Page 14

... Mono/Stereo Class D Amplifiers OUTL- OUTL+ CODEC OUTR+ OUTR- 1µF 1µF 1µF *SYSTEM-LEVEL REQUIREMENT. 14 ______________________________________________________________________________________ V DD 100µ 0.47µF INL- 0.47µF INL+ MAX9714 0.47µF INR+ 0.47µF INR- SS 0.18µF SHDN 1µ INL- 15kΩ MAX9722B OUTL INL+ 15kΩ OUTR INR ...

Page 15

For the latest package outline information www.maxim-ic.com/packages.) E E/2 D/2 D ______________________________________________________________________________________ 6W, Filterless, Spread-Spectrum Mono/Stereo Class D Amplifiers DETAIL A e (ND-1) X ...

Page 16

Filterless, Spread-Spectrum Mono/Stereo 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.) 16 ______________________________________________________________________________________ Package Information (continued) PACKAGE OUTLINE 32, 44, 48, ...

Page 17

For the latest package outline information www.maxim-ic.com/packages.) ______________________________________________________________________________________ 6W, Filterless, Spread-Spectrum Mono/Stereo Class D Amplifiers Package Information (continued) PACKAGE OUTLINE, 16, 20, 28, 32, ...

Page 18

... Maxim reserves the right to change the circuitry and specifications without notice at any time. 18 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2006 Maxim Integrated Products Package Information (continued) PACKAGE OUTLINE, 16, 20, 28, 32, 40L THIN QFN, 5x5x0.8mm 21-0140 is a registered trademark of Maxim Integrated Products, Inc ...

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