View MAX9713EVKIT_306513.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

19-3521; Rev 0; 11/04
MAX9713 Evaluation Kit
General Description
The MAX9713 evaluation kit (EV kit) is a fully assembled and tested circuit board that contains the MAX9713 filterless class D amplifier. The EV kit is capable of delivering 6W into an 8 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. o 10V to 25V Single-Supply Operation o Up to 85% Efficiency o Drives 6W into 8 or 8W into 16 o Differential or Single-Ended Input Modes o Pin-Selectable Frequency Options o Pin-Selectable Gain Options o Low 0.1% THD+N o Surface-Mount Construction o Fully Assembled and Tested
Features
Evaluates: MAX9713
Ordering Information
PART MAX9713EVKIT TEMP RANGE 0C to +70C IC PACKAGE 32 TQFN-EP* (5mm x 5mmx 0.8mm)
*Exposed paddle.
Component List
DESIGNATION C1 QTY 1 DESCRIPTION 0.1F 10%, 25V X5R ceramic capacitor (0402) TDK C1005X5R1E104K 33F 10%, 35V tantalum capacitors (D case) AVX TAJD336K035 0.1F 10%, 25V X7R ceramic capacitors (0603) Murata GRM188R71E104K TDK C1608X7R1E104K or equivalent 100pF 5%, 50V C0G ceramic capacitors (0402) Murata GRP1555C1H101J Taiyo Yuden UMK105CG101JW TDK C1005C0G101J 0.47F 20%, 10V tantalum capacitors (0402) AVX TACK474M010 0.47F 10%, 6.3V X5R ceramic capacitors (0402) Murata GRM155R60J474K TDK C1005X5R0J474K DESIGNATION QTY DESCRIPTION 1F 10%, 25V X7R ceramic capacitor (0805) TDK C2012X7R1E105K or equivalent 1000pF 10%, 50V X7R ceramic capacitor (0603) ECM0083 GRM188R71H102K TDK C1608X7R1H102KT Not installed, ceramic capacitor (0603) Not installed, ceramic capacitors (0402) 5.1V, 20mA zener diode (SOT-23) Central CMPZ5231B (top mark C8F) 3-pin headers 2-pin headers 100 25%, 1.7A ferrite bead (0603) Taiyo Yuden BKP1608HS101 1k 25%, 150mA ferrite beads (0402) Taiyo Yuden BK1005HM102
C13
1
C2, C3
2
C14
1
C4, C5
2
C15 C16-C22 D1 JU1-JU5 JU6, JU7 L1
0 0 1 5 2 1
C6, C7, C8
3
C9, C10
2
C11, C12
2
L2, L3
2
________________________________________________________________ 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.
MAX9713 Evaluation Kit Evaluates: MAX9713
Component List (continued)
DESIGNATION L4, L5 R1 R2, R3 T1 FOUT1+, FOUT1-, FOUT2+, FOUT2U1 None None QTY 0 1 0 0 DESCRIPTION Not installed, power inductors 10k 5% resistor (0402) Not installed, resistors (0402) Not installed, common-mode choke
Detailed Description
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 single-ended audio input source. The single-ended input mode accepts up to 2VP-P signals, and the differential mode accepts up to 4V P-P signals. The audio input source is amplified to drive 6W into an 8 speaker. The MAX9713 EV kit provides three sets of differential outputs. The device outputs (OUT+/-) can be connected directly to a speaker load without any filtering. However, a filter can be added to ease evaluation. The filtered outputs (FOUT1+/-) require installation of filtering components T1, C21, and C22. The LCR filtered outputs (FOUT2+/-) require installation of filtering components L4, L5, C15-C20, R2, and R3. See Table 1 for the suggested filtering component values for an 8 load and a 30kHz cutoff frequency. For a 16 load and 35kHz cutoff, see Table 2 for the suggested values. All recommended filtering components for an 8 load are included with the MAX9713 EV kit.
0
Not installed, test points
1 7 1
MAX9713ETJ (32-pin TQFN 5mm x 5mm x 0.8mm) Shunts MAX9713 PC board
Quick Start
The MAX9713 EV kit is fully assembled and tested. Follow the steps listed below to verify board operation. Do not turn on the power supply until all connections are completed.
Table 1. Recommended Filter Component for Outputs with 8 Load
PART NUMBER L4, L5 C15 C16, C17, C18 C19, C20 R2, R3 RECOMMENDED VALUE 22H 0.1F 0.022F 0.01F 100
Recommended Equipment
* 15V, 2A power supply * Audio source (i.e., CD player, cassette player) * 8/16 speaker 1) Verify that no shunt is across jumper JU6 (differential input mode). 2) Verify shunt across pins 1 and 2 of jumper JU1. Install shunt across jumper JU7 (EV kit is enabled). 3) Verify shunts across pins 1 and 2 of jumpers JU2 and JU3 (Gain = 16dB). 4) Verify shunts across pins 1 and 2 of jumpers JU4 and JU5 (spread-spectrum mode, frequency centered at 335kHz). 5) Connect the speaker across the OUT+ and OUTpads. 6) Connect the positive terminal of the 15V power supply to the V+ pad and the ground terminal of the power supply to the GND pad. 7) Connect the audio source across the VIN+ and VINpads. 8) Turn on the power supply, and then turn on the audio source.
Table 2. Recommended Filter Component for Outputs with 16 Load
PART NUMBER L4, L5 C15 C16, C17, C18 C19, C20 R2, R3 RECOMMENDED VALUE 47H 0.15F 0.022F 0.01F 100
Jumper Selection
Shutdown Mode Jumpers JU1 and JU7 control the shutdown pin (SHDN) of the MAX9713. See Table 3 for the JU1 and JU7 functions.
2
_______________________________________________________________________________________
MAX9713 Evaluation Kit Evaluates: MAX9713
Table 3. JU1 and JU7 Functions (SHDN)
JU1 SHUNT POSITION Pins 1 and 2 Pins 2 and 3 Pins 1 and 2 JU7 SHUNT POSITION Installed (SHDN = high) Installed, without external signal (SHDN = low) Not installed, with external signal connected to SHDN pad EV KIT FUNCTION EV kit enabled (default) Shutdown mode SHDN pin driven by external signal. Shutdown is active low.
Gain Selection Jumpers JU2 and JU3 provide an option to select the output voltage gain. See Table 4 for JU2 and JU3 functions. See Table 7 for power vs. gain and input levels.
Switching Frequency The MAX9713 has two operating modes, fixed-frequency modulation (FFM) mode and spread-spectrum modulation (SSM) mode. Jumpers JU4 and JU5 control pins FS1 and FS2. See Table 5 for JU4 and JU5 functions.
Table 4. 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 Pins 1 and 2 (G2 = high) Pins 2 and 3 (G2 = low) Pins 1 and 2 (G2 = high) Pins 2 and 3 (G2 = low) MAX9713 OUTPUT GAIN (dB) 16 (default) 13 19.1 22.1
Note: Make sure a shunt is installed across pins 1 and 2 of jumper JU1.
Table 5. JU4 and JU5 Functions (FS1 and FS2)
JU4 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) JU5 SHUNT LOCATION Pins 1 and 2 (FS2 = high) Pins 2 and 3 (FS2 = low) Pins 1 and 2 (FS2 = high) Pins 2 and 3 (FS2 = low) MAX9713 SWITCHING FREQUENCY (kHz) 335 10%, SSM (default) 236, FFM 460, FFM 335, FFM
Note: Make sure a shunt is installed across pins 1 and 2 of jumper JU1.
_______________________________________________________________________________________
3
MAX9713 Evaluation Kit Evaluates: MAX9713
Input Mode Jumper JU6 provides an option to select between a differential or single-ended input mode of the EV kit. See Table 6 for JU6 functions.
Table 7. MAX9713 Power vs. Gain and Input Levels at 10% THD+N
GAIN (dB) VIN DIFF RMS (V) 1.27 0.89 0.63 0.45 0.78 0.54 0.39 0.27 RL () 16 16 16 16 8 8 8 8 POUT AT 10% THD+N (W) 8 8 8 8 6 6 6 6
Table 6. JU6 Functions
SHUNT POSITION Not installed Installed (VIN- pad AC-coupled to GND) EV KIT INPUT MODE Differential input mode (default) Single-ended input mode
13.0 16.1 19.1 22.1 13.0 16.1 19.1 22.1
Component Suppliers
SUPPLIER AVX Central Murata Taiyo Yuden TDK PHONE 843-946-0238 631-435-1110 770-436-1300 800-348-2496 847-803-6100 FAX 843-626-3123 631-435-1824 770-436-3030 847-925-0899 847-390-4405 WEBSITE www.avxcorp.com www.centralsemi.com www.murata.com www.t-yuden.com www.component.tdk.com
Note: Indicate that you are using the MAX9713 when contacting thses suppliers.
4
_______________________________________________________________________________________
DVDD L1 R1 10k JU1 C4 0.1F C5 0.1F R2 OPEN GND C3 33F 35V C14 1000pF C2 33F 35V 3 D1 1 OUT+ 3 21 VDD VDD 29 FOUT1+ 3 T1 4 1 C22 OPEN FOUT127 OUTOUT- 28 L5 OPEN C21 2 OPEN 30 OUT+ OUT+ L4 OPEN PGND PGND VDD VDD L2 11 INC9 0.47F 12 IN+ L3 C10 0.47F 9 REG OUTAGND U1 R3 OPEN C11 0.47F DVDD 10 C8 100pF PGND PGND 4 1 22 23 2 24 C17 OPEN 1 2 3 V+
VDD
Figure 1. MAX9713 EV Kit Schematic
C19 OPEN FOUT2+ C15 OPEN C16 OPEN FOUT2C18 OPEN C20 OPEN
VIN-
GND
C6 100pF
JU6
VIN+
C7 100pF
MAX9713
SHDN 14 SHDN JU7
DVDD
1 2 15 G1 DVDD 1 JU3 G2 16 DVDD 1 JU4 FS1 18 DVDD 2 3 2 3
JU2
C1P
6 C1 0.1F C1N 5 C13 1.0F VDD
3
CHOLD
7
1 2 JU5 19 FS2 N.C. N.C. 17 8 N.C. 20 3
SS N.C. 25 N.C. 26 N.C. 31 N.C. 32
13 C12 0.47F
Evaluates: MAX9713
_______________________________________________________________________________________
MAX9713 Evaluation Kit
5
MAX9713 Evaluation Kit Evaluates: MAX9713
Figure 2. MAX9713 EV Kit Component Placement Guide-- Component Side
Figure 3. MAX9713 EV Kit PC Board Layout--Component Side
Figure 4. MAX9713 EV Kit PC Board Layout--Layer 2 (GND)
Figure 5. MAX9713 EV Kit PC Board Layout--Layer 3 (VDD)
6
_______________________________________________________________________________________
MAX9713 Evaluation Kit Evaluates: MAX9713
Figure 6. MAX9713 EV Kit PC Board Layout--Solder Side
Figure 7. MAX9713 EV Kit Component Placement Guide-- Solder Side
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 _____________________ 7 (c) 2004 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

▲Up To Search▲

Price & Availability of MAX9713EVKIT

	To Download MAX9713EVKIT Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .