MAX9713EVKIT [MAXIM]
MAX9713 Evaluation Kit; MAX9713评估套件
| 型号： | MAX9713EVKIT |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | MAX9713 Evaluation Kit |
| 文件： | 总8页 (文件大小：212K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-3521; Rev 2; 11/07
MAX9713 Evaluation Kit
General Description
Features
♦ 10V to 25V Single-Supply Operation
♦ Up to 85% Efficiency
The MAX9713 evaluation kit (EV kit) is a fully assembled
and tested printed-circuit board (PCB) that contains the
MAX9713 filterless class D amplifier. The EV kit is capa-
ble of delivering 6W into an 8Ω load and is designed to
operate from a 10V to 25V DC power supply. The
MAX9713 EV kit accepts differential or single-ended
input signals and provides an option to select between
different switching frequencies.
♦ Drives 6W into 8Ω or 8W into 16Ω
♦ Differential or Single-Ended Input Modes
♦ Pin-Selectable Frequency Options
♦ Pin-Selectable Gain Options
♦ Low 0.1% THD+N
♦ Surface-Mount Construction
Ordering Information
♦ Fully Assembled and Tested
PART
TYPE
MAX9713EVKIT+
EV Kit
+Denotes lead-free and RoHS-compliant.
Component List
DESIGNATION QTY
DESCRIPTION
DESIGNATION QTY
DESCRIPTION
0.1µF 10ꢀ% 25V X5ꢁ ceramic
capacitor (0402)
TDK C1005X5ꢁ1E104K
1µF 10ꢀ% 25V X7ꢁ ceramic
capacitor (0805)
TDK C2012X7ꢁ1E105K or
equivalent
C1
1
2
C13
C14
1
1
33µF 10ꢀ% 35V tantalum
capacitors (D case)
AVX TAJD336K035
C2% C3
1000pF 10ꢀ% 50V X7ꢁ ceramic
capacitor (0603)
Murata GꢁM188ꢁ71H102K
TDK C1608X7ꢁ1H102KT
0.1µF 10ꢀ% 25V X7ꢁ ceramic
capacitors (0603)
C4% C5
2
3
Murata GꢁM188ꢁ71E104K
TDK C1608X7ꢁ1E104K or
equivalent
Not installed% ceramic capacitor
(0603)
C15
0
0
Not installed% ceramic capacitors
(0402)
C16–C22
100pF 5ꢀ% 50V C0G ceramic
capacitors (0402)
Murata GꢁP1555C1H101J
Taiyo Yuden UMK105CG101JW
TDK C1005C0G101J
5.1V% 20mA zener diode (SOT-23)
Central CMPZ5231B LEAD FꢁEE
(Top Mark: C8F)
C6% C7% C8
D1
FB1
1
1
2
100Ω 25ꢀ% 1.7A ferrite bead
(0603)
Murata BKP1608HS101-T
0.47µF 10ꢀ% 6.3V X5ꢁ ceramic
capacitors (0402)
Murata GꢁM155ꢁ60J474K
TDK C1005X5ꢁ0J474K
C9% C10% C12
C11
3
1
1kΩ 25ꢀ% 150mA ferrite beads
(0402)
Murata BK1005HM102-T
FB2% FB3
0.01µF 10ꢀ% 25V X7ꢁ ceramic
capacitor (0402)
Murata GꢁP155ꢁ71E103K
TDK C1005X7ꢁ1E103M
FOUT1+%
FOUT1-%
FOUT2+%
FOUT2-
0
Not installed% test points
JU1–JU5
JU6% JU7
5
2
3-pin headers
2-pin headers
________________________________________________________________ Maxim Integrated Products
1
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.
MAX9713 Evaluation Kit
3) Verify shunts across pins 1-2 of jumpers JU2 and
JU3 (Gain = 16dB).
Component List (continued)
DESIGNATION QTY
DESCRIPTION
4) Verify shunts across pins 1-2 of jumpers JU4 and
JU5 (spread-spectrum mode% frequency centered at
335kHz).
L4% L5
ꢁ1
0
1
0
0
Not installed% power inductors
10kΩ 5ꢀ resistor (0402)
5) Connect the speaker across the OUT+ and OUT-
pads.
ꢁ2% ꢁ3
T1
Not installed% resistors (0402)
Not installed% common-mode choke
6) Connect the positive terminal of the 15V power sup-
ply to the V+ pad and the ground terminal of the
power supply to the GND pad.
32-pin TQFN-EP*% 5mm x 5mm x 0.8mm
Maxim MAX9713ETJ+
U1
1
—
—
7
1
Shunts
7) Connect the audio source across the VIN+ and VIN-
pads.
PCB: MAX9713 Evalution Kit+
*EP = Exposed paddle.
8) Turn on the power supply% and then turn on the
audio source.
Component Suppliers
Detailed Description
SUPPLIER
PHONE
WEBSITE
The MAX9713 EV kit contains the MAX9713 filterless
class D amplifier IC. The EV kit operates from a 10V to
25V DC power supply and accepts a differential or sin-
gle-ended audio input source. The single-ended input
AVX Corp.
843-946-0238 www.avxcorp.com
Central
Semiconductor Corp.
631-435-1110 www.centralsemi.com
mode accepts up to 2V
signals% and the differential
Murata Mfg. Co.% Ltd. 770-436-1300 www.murata.com
P-P
mode accepts up to 4V
signals. The audio input
P-P
Taiyo Yuden
TDK Corp.
800-348-2496 www.t-yuden.com
source is amplified to drive 6W into an 8Ω speaker.
847-803-6100 www.component.tdk.com
The MAX9713 EV kit provides three sets of differential
outputs. The device outputs (OUT+/-) can be connect-
ed directly to a speaker load without any filtering.
However% a filter can be added to ease evaluation. The
filtered outputs (FOUT1+/-) require installation of filter-
ing components T1% C21% and C22. The LCꢁ filtered
outputs (FOUT2+/-) require installation of filtering com-
ponents L4% L5% C15–C20% ꢁ2% and ꢁ3.
Note: Indicate that you are using the MAX9713 when contact-
ing these component suppliers.
Quick Start
Recommended Equipment
Before beginning% the following equipment is needed:
• 15V% 1A power supply
• Audio source (i.e.% CD player% cassette player)
• 8Ω/16Ω speaker
Procedure
The MAX9713 EV kit is fully assembled and tested.
Follow the steps below to verify board operation.
Caution: Do not turn on the power supply until all
connections are completed.
1) Verify that no shunt is across jumper JU6 (differential
input mode).
2) Verify shunt across pins 1-2 of jumper JU1. Install
shunt across jumper JU7 (EV kit is enabled).
2
_______________________________________________________________________________________
MAX9713 Evaluation Kit
Gain Selection
Jumpers JU2 and JU3 provide an option to select the
output voltage gain. See Table 2 for JU2 and JU3 func-
tions. See Table 5 for power vs. gain and input levels.
Jumper Selection
Shutdown Mode
Jumpers JU1 and JU7 control the shutdown pin
(SHDN) of the MAX9713. See Table 1 for the JU1 and
JU7 functions.
Switching Frequency
The MAX9713 has two operating modes% fixed-frequen-
cy modulation (FFM) mode and spread-spectrum mod-
ulation (SSM) mode. Jumpers JU4 and JU5 control pins
FS1 and FS2. See Table 3 for JU4 and JU5 functions.
Note: Contact your local Maxim representative for rec-
ommended MAX9713 filtering component values.
Table 1. JU1 and JU7 Functions (SHDN)
JU1 SHUNT POSITION
JU7 SHUNT POSITION
EV KIT FUNCTION
EV kit enabled (default)
Pins 1 and 2
Pins 2 and 3
Installed (SHDN = high)
Installed% without external signal (SHDN = low) Shutdown mode
Not installed% with external signal connected to SHDN pin driven by external signal. Shutdown
Pins 1 and 2
SHDN pad
is active low.
Table 2. JU2 and JU3 Functions (G1 and G2)
JU2 SHUNT LOCATION
Pins 1 and 2 (G1 = high)
Pins 1 and 2 (G1 = high)
Pins 2 and 3 (G1 = low)
Pins 2 and 3 (G1 = low)
JU3 SHUNT LOCATION
MAX9713 OUTPUT GAIN (dB)
1-2 (G2 = high)
2-3 (G2 = low)
1-2 (G2 = high)
2-3 (G2 = low)
16 (default)
13
19.1
22.1
Note: Make sure a shunt is installed across pins 1-2 of jumper JU1.
Table 3. JU4 and JU5 Functions (FS1 and FS2)
MAX9713 SWITCHING FREQUENCY
(kHz)
JU4 SHUNT LOCATION
JU5 SHUNT LOCATION
Pins 1 and 2 (FS1 = high)
Pins 1 and 2 (FS1 = high)
Pins 2 and 3 (FS1 = low)
Pins 2 and 3 (FS1 = low)
1-2 (FS2 = high)
2-3 (FS2 = low)
1-2 (FS2 = high)
2-3 (FS2 = low)
335 10ꢀ% SSM (default)
236% FFM
460% FFM
335% FFM
Note: Make sure a shunt is installed across pins 1-2 of jumper JU1.
_______________________________________________________________________________________
3
MAX9713 Evaluation Kit
Input Mode
Jumper JU6 provides an option to select between a
differential or single-ended input mode of the EV kit.
See Table 4 for JU6 functions.
Table 5. MAX9713 Power vs. Gain and
Input Levels at 10% THD+N
P
AT 10%
OUT
GAIN (dB)
V
DIFF RMS (V)
R (Ω)
L
IN
THD+N (W)
Table 4. JU6 Functions
13.0
16.1
19.1
22.1
13.0
16.1
19.1
22.1
1.27
0.89
0.63
0.45
0.78
0.54
0.39
0.27
16
16
16
16
8
8
8
8
8
6
6
6
6
SHUNT POSITION
EV KIT INPUT MODE
Differential input mode
(default)
Not installed
Installed (VIN- pad AC-coupled
to GND)
Single-ended input mode
8
8
8
4
_______________________________________________________________________________________
MAX9713 Evaluation Kit
AMX9731
Figure 1. MAX9713 EV Kit Schematic
_______________________________________________________________________________________
5
MAX9713 Evaluation Kit
Figure 2. MAX9713 EV Kit Component Placement Guide—
Component Side
Figure 3. MAX9713 EV Kit PCB—Component Side
Figure 4. MAX9713 EV Kit PCB—Layer 2 (GND)
Figure 5. MAX9713 EV Kit PCB—Layer 3 (VDD)
6
_______________________________________________________________________________________
MAX9713 Evaluation Kit
Figure 6. MAX9713 EV Kit PCB—Solder Side
Figure 7. MAX9713 EV Kit Component Placement Guide—
Solder Side
_______________________________________________________________________________________
7
MAX9713 Evaluation Kit
Revision History
REVISION
NUMBER
REVISION
DATE
PAGES
CHANGED
REVISION DESCRIPTION
0
1
2
—
Initial release
—
—
—
4/05
11/07
Update to lead-free and ꢁoHS-compliant; various edits; replaced Figures 1–7.
1–7
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.
8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2007 Maxim Integrated Products
is a registered trademark of Maxim Integrated Products% Inc.
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