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PDF MAX9715 Data sheet ( Hoja de datos )
| Número de pieza | MAX9715 | |
| Descripción | Filterless Class D Audio Amplifier | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MAX9715 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
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19-3589; Rev 1; 8/05
EVAALVUAAILTAIOBNLEKIT
2.8W, Low-EMI, Stereo, Filterless
Class D Audio Amplifier
General Description
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
www.DataSheegta4Uin.ctoomsuit the audio input level and speaker load.
The MAX9715 features high PSRR (71dB at 1kHz),
allowing for operation from noisy supplies without addi-
tional regulation. Comprehensive click-and-pop sup-
pression 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 thin QFN-EP and 16-pin
TSSOP packages.
Features
♦ 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 (RL = 8Ω, POUT = 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)
16-Pin TSSOP
Applications
High-End Notebook Audio
LCD Projectors
Portable Audio
Multimedia Docking Stations
Typical Operating Circuit/Functional Diagram appears at
end of data sheet.
Block Diagram
4.5V TO 5.5V SUPPLY
Ordering Information
PART
TEMP RANGE
MAX9715ETE+
-40°C to +85°C
MAX9715EUE+
-40°C to +85°C
+Denotes lead-free package.
*EP = Exposed paddle.
PIN-PACKAGE
16 TQFN-EP*
16 TSSOP
Pin Configurations
TOP VIEW
12 11 10 9
OUTR+
INR
OUTR-
GAIN CLASS D
AMPLIFIER
OUTL+
INL
OUTL-
MAX9715
BIAS 13
VDD 14
INR 15
INL 16
MAX9715
1 23 4
8 SHDN
7 GND
6 GAIN
5 N.C.
TQFN
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
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.
1 page  
2.8W, Low-EMI, Stereo, Filterless Class D
Audio Amplifier
Typical Operating Characteristics (continued)
(VDD = 5.0V, CVDD = 3 x 0.1µF, CBIAS = 1µF, CINL = CINR = 1µF, AV = +10.5dB, TA = +25°C, unless otherwise noted.) (See the
Typical Operating Circuit/Functional Diagram)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
0
-10 RL = 8Ω
-20
www.DataSheet4U.com
-30
-40
-50
-60
-70
-80
-90
-100
0.01
0.1 1
10
FREQUENCY (Hz)
100
CROSSTALK
vs. FREQUENCY
0
POUT = 1W
-20
RL = 8Ω
A = +10.5dB
fIN = 10kHz
-40
-60
RIGHT TO LEFT
-80 LEFT TO RIGHT
-100
-120
0.01
0.1 1 10
FREQUENCY (kHz)
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
100 0
OUTPUT SPECTRUM
vs. FREQUENCY
RL = 8Ω
VDD = 5V
fIN = 1kHz
5 10 15
FREQUENCY (kHz)
20
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
0
OUTPUT SPECTRUM
vs. FREQUENCY (A-WEIGHTED)
RL = 8Ω
VDD = 5V
fIN = 1kHz
5 10 15
FREQUENCY (kHz)
20
WIDEBAND SPECTRUM
0
-20
-40
-60
-80
-100
VDD = 5V
INPUTS AC GROUNDED
RL = 8Ω
-120
1 10
100
FREQUENCY (MHz)
1000
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
20
18 NO LOAD
INPUTS AC GROUNDED
16
14
12
10
8
6
4
2
0
4.5 4.8 5.0 5.3
SUPPLY VOLTAGE (V)
5.5
_______________________________________________________________________________________ 5
5 Page 
www.DataSheet4U.com
2.8W, Low-EMI, Stereo, Filterless Class D
Audio Amplifier
Typical Application Circuit
LEFT IN
5V
C1 22µF
15nF
8Ω
RIGHT IN
C2
MAX9715
22µF
15nF
8Ω
C5 R1
1µF 15kΩ
C6 R2
1µF 15kΩ
C3
22nF
R3
7.5kΩ
R4
15kΩ
C4
2.2nF
1µF
2.5V
MAX4480
1µF
12V
MAX9713
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet MAX9715.PDF ] | |
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