MAX9715ETE+ Maxim Integrated Products, MAX9715ETE+ Datasheet

IC AMP AUDIO PWR 2.8W D 16TQFN

MAX9715ETE+

Manufacturer Part Number
MAX9715ETE+
Description
IC AMP AUDIO PWR 2.8W D 16TQFN
Manufacturer
Maxim Integrated Products
Type
Class Dr
Datasheet

Specifications of MAX9715ETE+

Output Type
2-Channel (Stereo)
Max Output Power X Channels @ Load
2.8W x 2 @ 4 Ohm
Voltage - Supply
4.5 V ~ 5.5 V
Features
Depop, Short-Circuit and Thermal Protection, Shutdown
Mounting Type
Surface Mount
Package / Case
16-TQFN Exposed Pad
Product
Class-D
Output Power
2.8 W
Thd Plus Noise
0.06 %
Operating Supply Voltage
5 V
Supply Current
12.8 mA
Maximum Power Dissipation
1666 mW
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Supply Voltage (max)
5.5 V
Supply Voltage (min)
4.5 V
Amplifier Class
D
No. Of Channels
2
Supply Voltage Range
4.5V To 5.5V
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 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
gain to suit 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 a
thermally enhanced 16-pin TQFN-EP package.
19-3589; Rev 2; 7/08
Typical Operating Circuit/Functional Diagram appears at
end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim's website at www.maxim-ic.com.
High-End Notebook Audio
LCD Projectors
Portable Audio
Multimedia Docking Stations
INR
GAIN
INL
________________________________________________________________ Maxim Integrated Products
4.5V TO 5.5V SUPPLY
MAX9715
General Description
AMPLIFIER
CLASS D
Block Diagram
Applications
OUTR+
OUTR-
OUTL+
OUTL-
2.8W, Low-EMI, Stereo, Filterless
Class D Audio Amplifier
♦ 5V Single-Supply Operation
♦ 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 (R
♦ 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 Package
+ Denotes a lead-free/RoHS-compliant package.
* EP = Exposed pad.
MAX9715ETE+
TOP VIEW
16-Pin Thin QFN-EP (5mm x 5mm x 0.8mm)
PART
BIAS
V
INR
INL
DD
13
14
15
16
+
12
1
L
Ordering Information
-40°C to +85°C
TEMP RANGE
= 8Ω, P
MAX9715
11
2
TQFN
Pin Configurations
10
3
OUT
= 1W)
9
4
PIN-PACKAGE
16 TQFN-EP*
8
7
6
5
Features
SHDN
GND
GAIN
N.C.
1

Related parts for MAX9715ETE+

MAX9715ETE+ Summary of contents

Page 1

... Low Total Harmonic Distortion: 0.06% at 1kHz ♦ Short-Circuit and Thermal Protection ♦ Internal Gain, +9.0dB or +10.5dB ♦ Available in Space-Saving Package 16-Pin Thin QFN-EP (5mm x 5mm x 0.8mm) Applications PART MAX9715ETE+ + Denotes a lead-free/RoHS-compliant package Exposed pad. TOP VIEW OUTR+ OUTR- OUTL+ OUTL- Features = 8Ω ...

Page 2

Low-EMI, Stereo, Filterless Class D Audio Amplifier ABSOLUTE MAXIMUM RATINGS GND ...............................................................+ GND to PGND .......................................................-0.3V to +0.3V Any Other Pin to PGND ............................. -0. Duration of OUT__ Short Circuit ...

Page 3

Low-EMI, Stereo, Filterless Class D ELECTRICAL CHARACTERISTICS (continued 5.0V, GND = PGND = 0V OUT_+ and OUT_-, GAIN = +10.5dB PARAMETER SYMBOL Spread-Spectrum Modulation Crosstalk Click-and-Pop Level Efficiency DIGITAL INPUTS ...

Page 4

Low-EMI, Stereo, Filterless Class D Audio Amplifier (V = 5.0V 0.1μ VDD BIAS Typical Operating Circuit/Functional Diagram ) TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER 100 f = 1kHz ...

Page 5

Low-EMI, Stereo, Filterless Class 5.0V 0.1μ VDD BIAS Typical Operating Circuit/Functional Diagram ) POWER-SUPPLY REJECTION RATIO vs. FREQUENCY 8Ω L -10 -20 -30 -40 -50 -60 -70 ...

Page 6

Low-EMI, Stereo, Filterless Class D Audio Amplifier (V = 5.0V 0.1μ VDD BIAS Typical Operating Circuit/Functional Diagram ) SHUTDOWN CURRENT vs. SUPPLY VOLTAGE 0.40 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0 4.5 ...

Page 7

Low-EMI, Stereo, Filterless Class Figure 1. MAX9715 Radiated Emissions with 75mm of Speaker Cable Detailed Description The MAX9715 2.8W, Class D speaker amplifier with gain control offers Class AB ...

Page 8

Low-EMI, Stereo, Filterless Class D Audio Amplifier Efficiency of a Class D amplifier is attributed to the region of operation of the output-stage transistors Class D amplifier, the output transistors act as current-steering switches and consume negligible ...

Page 9

Low-EMI, Stereo, Filterless Class D Voice coil movement due to the square-wave frequency is very small because the switching frequency of the MAX9715 is well beyond the bandwidth of most speak- ers. Although this movement is small, a speaker ...

Page 10

Low-EMI, Stereo, Filterless Class D Audio Amplifier Supply Bypassing, Layout, Proper layout and grounding are essential for optimum performance. Use large traces for the power-supply inputs and amplifier outputs to minimize losses due to parasitic trace resistance. Large traces ...

Page 11

Low-EMI, Stereo, Filterless Class D LEFT IN RIGHT 1μF 15kΩ 1μF 15kΩ C3 22nF ______________________________________________________________________________________ Audio Amplifier Typical Application Circuit 5V 22μF C1 15nF 8Ω 22μF MAX9715 C2 15nF 8Ω R3 7.5kΩ C4 2.2nF ...

Page 12

Low-EMI, Stereo, Filterless Class D Audio Amplifier 1μF INL LEFT AUDIO GAIN-SELECT GAIN LOGIC 1μF RIGHT INR AUDIO V BIAS BIAS 1μF * BULK PC BOARD DECOUPLING, TYPICALLY GREATER THAN 10μF. Chip Information TRANSISTOR COUNT: 11,721 PROCESS: BiCMOS 12 ...

Page 13

... 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 13 © 2008 Maxim Integrated Products ...

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