MAX9737EVKIT+ Maxim Integrated Products, MAX9737EVKIT+ Datasheet

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MAX9737EVKIT+

Manufacturer Part Number
MAX9737EVKIT+
Description
KIT EVAL FOR MAX9737
Manufacturer
Maxim Integrated Products
Datasheets
1.MAX9737ETG.pdf (13 pages)
2.MAX9737EVKIT.pdf (7 pages)

Specifications of MAX9737EVKIT+

Amplifier Type
Class D
Output Type
1-Channel (Mono)
Max Output Power X Channels @ Load
13W x 1 @ 4 Ohm
Voltage - Supply
8 V ~ 28 V
Operating Temperature
-40°C ~ 85°C
Board Type
Fully Populated
Utilized Ic / Part
MAX9737
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX9737 mono 7W Class D amplifier provides a
high-performance, thermally efficient amplifier solution
that offers up to 88% efficiency at a 12V supply. The
device operates from 8V to 28V and provides a high 80dB
PSRR, eliminating the need for a regulated power supply.
Filterless modulation allows the MAX9737 to pass CE
EMI limits with 1m cables using only a low-cost ferrite
bead and small-value capacitor on each output.
Comprehensive click-and-pop suppression circuitry
reduces noise on power-up/down or into and out of
shutdown or mute.
An input op amp allows the user to create a lowpass or
highpass filter, and select an optimal gain. The internal
precharge circuit ensures clickless/popless turn-on
within 10ms.
The MAX9737 is available in the 24-pin, TQFN-EP pack-
age and is specified over the -40°C to +85°C tempera-
ture range.
19-4327; Rev 0; 10/08
Pin Configuration and Typical Application Circuit appear 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.
2.1 Notebook PCs
LCD/PDP/CRT Monitors
PC Surround Speakers
MP3 Docking Stations
________________________________________________________________ Maxim Integrated Products
General Description
AUDIO
INPUT
Applications
INPUT RESISTORS AND
CAPACITORS SELECT GAIN
AND CUTOFF FREQUENCY
SHDN
MUTE
Mono 7W Class D Amplifier
PRECHARGE
MAX9737
8V TO 28V
♦ 8V to 28V Supply Voltage Range
♦ Spread-Spectrum Modulation Enables Low-EMI
♦ Passes EMI Limit with Up to 1m of Speaker Cable
♦ High 80dB PSRR
♦ Up to 88% Efficiency Eliminates Heatsink
♦ Thermal and Output Current Protection
♦ < 1µA Shutdown Mode
♦ Click-and-Pop Suppression
♦ < 10ms Turn-On Time
♦ Space-Saving, 4mm x 4mm x 0.8mm, 24-Pin TQFN
+ Denotes a lead-free/RoHS-compliant package.
* EP = Exposed pad.
MAX9737ETG+
Solution
Package
PART
Ordering Information
-40°C to +85°C
TEMP RANGE
Simplified Diagram
8Ω
PIN-PACKAGE
Features
24 TQFN-EP*
1

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MAX9737EVKIT+ Summary of contents

Page 1

... MP3 Docking Stations AUDIO INPUT Pin Configuration and Typical Application Circuit appear at end of data sheet. ________________________________________________________________ Maxim Integrated Products 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. Mono 7W Class D Amplifier ♦ 28V Supply Voltage Range ♦ ...

Page 2

Mono 7W Class D Amplifier ABSOLUTE MAXIMUM RATINGS PVDD to PGND.......................................................-0.3V to +30V AGND to PGND .....................................................-0.3V to +0.3V IN, PRE, PC, COM to AGND.....................-0. MUTE, SHDN to AGND ............................................-0.3V to +6V REG to AGND ...............................................-0. ...

Page 3

ELECTRICAL CHARACTERISTICS (continued 12V SHDN PVDD AGND PGND = ∞, AC measurement bandwidth 22Hz to 22kHz (Note 3) PARAMETER SYMBOL OUTPUT AMPLIFIER CHARACTERISTICS Output Amplifier Gain Output Current Limit ...

Page 4

Mono 7W Class D Amplifier (V = 12V SHDN PVDD GND PGND TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY 1 PVDD = 12V, 8Ω LOAD 4W 0.1 2W 0.01 10 100 1k 10k 100k ...

Page 5

SHDN PVDD GND PGND EFFICIENCY vs. TOTAL OUTPUT POWER 90 PVDD = 24V, 80 8Ω LOAD 70 60 EFFICIENCY 50 40 POWER DISSIPATION ...

Page 6

Mono 7W Class D Amplifier (V = 12V SHDN PVDD GND PGND SHUTDOWN CURRENT vs. PVDD SUPPLY VOLTAGE ...

Page 7

PIN NAME Power Supply. Bypass PVDD to PGND with a 1µF capacitor connected to pin 1 and a 1µF capacitor 1, 17, 18 PVDD connected to pins 17 and 18. 2 CHOLD Charge-Pump Output. Connect a 1µF capacitor to PVDD. ...

Page 8

Mono 7W Class D Amplifier The MAX9737 features a mute mode where the signal is attenuated at the speaker and the outputs stop switch- ing. To mute the MAX9737, drive MUTE low. Click-and-Pop Suppression The MAX9737 features comprehensive click-and-pop suppression ...

Page 9

When evaluating the MAX9737 with a ferrite bead filter and resistive load, include a series inductor (68µH for 8Ω load and 33µH for 4Ω load) to model typical loud- speaker’s behavior. Omitting the series inductor reduces the efficiency, the THD+N ...

Page 10

Mono 7W Class D Amplifier 1μ 20kΩ 20kΩ C COM 1μF AUDIO INPUT C IN 0.47μF SHDN LOGIC INPUT Supply Bypassing, Layout, and Grounding Proper layout and grounding are essential for optimum performance. Use wide traces ...

Page 11

Pin Configuration TOP VIEW PVDD 1 + CHOLD 2 AGND 3 MAX9737 MUTE 4 SHDN 5 * TQFN 4mm x 4mm *EP = EXPOSED PAD, CONNECT TO PGND ...

Page 12

Mono 7W Class D Amplifier For the latest package outline information and land patterns www.maxim-ic.com/packages. PACKAGE TYPE 24 TQFN-EP 12 ______________________________________________________________________________________ Package Information PACKAGE CODE T2444+4 DOCUMENT NO. 21-0139 ...

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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