MAX9791AEVKIT+ Maxim Integrated, MAX9791AEVKIT+ Datasheet

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MAX9791AEVKIT+

Manufacturer Part Number
MAX9791AEVKIT+
Description
Audio Amplifiers Programmers, Development Systems
Manufacturer
Maxim Integrated
Datasheet

Specifications of MAX9791AEVKIT+

Product
Class-D
Output Power
2 W
Thd Plus Noise
0.03 %
Supply Current
4.4 mA
Maximum Power Dissipation
2286 mW
Audio Load Resistance
4 Ohms
Common Mode Rejection Ratio (min)
60 dB
Factory Pack Quantity
1
The MAX9791A evaluation kit (EV kit) demonstrates the
MAX9791A IC, which combines a stereo Class D power
amplifier, a DirectDrive
and a 120mA, 4.75V low-dropout regulator (LDO) for
notebook, tablet PC, and portable media player appli-
cations. Maxim’s DirectDrive technology eliminates the
need for bulky DC-blocking capacitors at the output of
the headphone amplifier.
The EV kit is configured for a 12dB speaker amplifier
gain and a 0dB headphone amplifier gain. It is designed
to operate from a 4.5V to 5.5V speaker supply and an
optional separate 2.7V to 5.5V headphone supply. The
EV kit is capable of delivering up to 2W into a pair of 4Ω
speakers and 180mW into a 32Ω headphone load.
19-4315; Rev 0; 10/08
DirectDrive is a registered trademark of Maxim Integrated
Products, Inc.
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.
REQUIRED COMPONENTS
C1, C2, C5, C6,
DESIGNATION
C10, C30, C31
C3, C4, C29
R3, R4, R13
C7, C8, C9
C25–C28
R1, R2
U1
QTY
________________________________________________________________ Maxim Integrated Products
8
3
3
3
2
3
1
1
General Description
®
20k
40.2k
1μF ±10%, 10V X7R ceramic
capacitors (0603)
Murata GRM188R71A105K
1μF ±10%, 50V X7R ceramic
capacitors (0805)
Murata GRM21BR71H105K
0.1μF ±10%, 16V X7R ceramic
capacitors (0603)
Murata GRM188R71C104K
10μF ±10%, 10V X7R ceramic
capacitors (0805)
Murata GRM21BR71A106K
Speaker and headphone amplifier
with LDO (28 TQFN-EP*)
Maxim MAX9791AETI+
PCB: MAX9791A Evaluation Kit+
stereo headphone amplifier,
±1% resistors (0603)
±1% resistors (0603)
DESCRIPTION
MAX9791A Evaluation Kit
♦ No DC-Blocking Output Capacitors Required at
♦ Speaker and Headphone Operation
♦ Wake-on-Beep Function
♦ 120mA, 4.75V LDO
♦ Lead-Free and RoHS Compliant
♦ Fully Assembled and Tested
+ Denotes lead-free and RoHS compliant.
* EP = Exposed pad.
OPTIONAL COMPONENTS
C11–C24, C32,
DESIGNATION
AVDD, HPVDD,
MAX9791AEVKIT+
SPOL+, SPOL-,
SPOR+, SPOR-
JU1, JU2, JU3
PGND, SENSE,
HPINR, SPINR
HPINL, SPINL
Headphone Output
SPOUTR+,
SPOUTL+,
HPL, HPR,
SPOUTL-,
JU4, JU6
R14, R15
SPOUTR-
R9–R12,
HPOUT
PGND,
R5–R8
Speaker: 2W Stereo Output
Headphone: 180mW DirectDrive Stereo Output
L1–L4
C33
JU5
R16
PART
QTY
2
7
0
0
2
1
3
2
0
0
4
0
0
5
Ordering Information
Binding posts
Not installed, ceramic capacitors
(0603)
Not installed, small PCB test
points
White side-entry phono jacks
Red side-entry phono jacks
3.5mm stereo headphone jack
3-pin headers
2-pin headers
Not installed, inductors (6.4mm x
6mm x 1.5mm)
0
Shunts (JU1–JU5)
Not installed, 2-pin header
Not installed, resistors (0603)
Not installed, resistor (0805)
±5% resistors (0805)
Component List
DESCRIPTION
TYPE
EV Kit
Features
1

Related parts for MAX9791AEVKIT+

MAX9791AEVKIT+ Summary of contents

Page 1

... Speaker: 2W Stereo Output Headphone: 180mW DirectDrive Stereo Output ♦ Wake-on-Beep Function ♦ 120mA, 4.75V LDO ♦ Lead-Free and RoHS Compliant ♦ Fully Assembled and Tested Ordering Information PART MAX9791AEVKIT+ + Denotes lead-free and RoHS compliant. DESIGNATION QTY OPTIONAL COMPONENTS AVDD, HPVDD, PGND, SPOUTL+, ...

Page 2

MAX9791A Evaluation Kit SUPPLIER Murata Electronics North America, Inc. Note: Indicate that you are using the MAX9791A when contacting this component supplier. Recommended Equipment Before beginning, the following equipment is needed: • One 5V supply • Two 4Ω ...

Page 3

Table 2. Headphone Amplifier (Jumper JU2) SHUNT HP_EN PIN POSITION Connected to 1-2* AVDD Connected to 2-3 PGND * Default position. Table 3. LDO (Jumper JU3) SHUNT LDO_EN PIN POSITION Connected to 1-2* AVDD Connected to 2-3 PGND * Default ...

Page 4

MAX9791A Evaluation Kit Figure 1. MAX9791A EV Kit Schematic 4 _______________________________________________________________________________________ ...

Page 5

Figure 2. MAX9791A EV Kit Component Placement Guide—Component Side _______________________________________________________________________________________ MAX9791A Evaluation Kit 5 ...

Page 6

MAX9791A Evaluation Kit Figure 3. MAX9791A EV Kit PCB Layout—Component Side 6 _______________________________________________________________________________________ ...

Page 7

Figure 4. MAX9791A EV Kit PCB Layout—Layer 2 _______________________________________________________________________________________ MAX9791A Evaluation Kit 7 ...

Page 8

MAX9791A Evaluation Kit Figure 5. MAX9791A EV Kit PCB Layout—Layer 3 8 _______________________________________________________________________________________ ...

Page 9

Figure 6. MAX9791A EV Kit PCB Layout—Solder Side _______________________________________________________________________________________ MAX9791A Evaluation Kit 9 ...

Page 10

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

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