MAX9713EVKIT+

19-3521; Rev 2; 11/07 MAX9713 Evaluation Kit 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 capable 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. Features ♦ 10V to 25V Single-Supply Operation ♦ Up to 85% Efficiency ♦ 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 Ordering Information PART TYPE MAX9713EVKIT+ EV Kit ♦ Surface-Mount Construction ♦ Fully Assembled and Tested +Denotes lead-free and RoHS-compliant. Component List DESIGNATION QTY DESCRIPTION C1 1 0.1µF ±10%, 25V X5R ceramic capacitor (0402) TDK C1005X5R1E104K C2, C3 2 33µF ±10%, 35V tantalum capacitors (D case) AVX TAJD336K035 2 0.1µF ±10%, 25V X7R ceramic capacitors (0603) Murata GRM188R71E104K TDK C1608X7R1E104K or equivalent C4, C5 C6, C7, C8 C9, C10, C12 C11 3 100pF ±5%, 50V C0G ceramic capacitors (0402) Murata GRP1555C1H101J Taiyo Yuden UMK105CG101JW TDK C1005C0G101J 3 0.47µF ±10%, 6.3V X5R ceramic capacitors (0402) Murata GRM155R60J474K TDK C1005X5R0J474K 1 0.01µF ±10%, 25V X7R ceramic capacitor (0402) Murata GRP155R71E103K TDK C1005X7R1E103M DESIGNATION QTY DESCRIPTION 1 1µF ±10%, 25V X7R ceramic capacitor (0805) TDK C2012X7R1E105K or equivalent C14 1 1000pF ±10%, 50V X7R ceramic capacitor (0603) Murata GRM188R71H102K TDK C1608X7R1H102KT C15 0 Not installed, ceramic capacitor (0603) C16–C22 0 Not installed, ceramic capacitors (0402) D1 1 5.1V, 20mA zener diode (SOT-23) Central CMPZ5231B LEAD FREE (Top Mark: C8F) FB1 1 100Ω ±25%, 1.7A ferrite bead (0603) Murata BKP1608HS101-T FB2, FB3 2 1kΩ ±25%, 150mA ferrite beads (0402) Murata BK1005HM102-T FOUT1+, FOUT1-, FOUT2+, FOUT2- 0 Not installed, test points JU1–JU5 5 3-pin headers JU6, JU7 2 2-pin headers C13 ________________________________________________________________ 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. 1 Evaluates: MAX9713 General Description Evaluates: MAX9713 MAX9713 Evaluation Kit Component List (continued) DESIGNATION QTY L4, L5 0 Not installed, power inductors DESCRIPTION 10kΩ ±5% resistor (0402) R1 1 R2, R3 0 Not installed, resistors (0402) T1 0 Not installed, common-mode choke U1 1 32-pin TQFN-EP*, 5mm x 5mm x 0.8mm Maxim MAX9713ETJ+ — 7 Shunts — 1 PCB: MAX9713 Evalution Kit+ *EP = Exposed paddle. Component Suppliers SUPPLIER AVX Corp. PHONE WEBSITE 843-946-0238 www.avxcorp.com Central 631-435-1110 www.centralsemi.com Semiconductor Corp. Murata Mfg. Co., Ltd. 770-436-1300 www.murata.com Taiyo Yuden 800-348-2496 www.t-yuden.com TDK Corp. 847-803-6100 www.component.tdk.com Note: Indicate that you are using the MAX9713 when contacting these component suppliers. Quick Start Recommended Equipment Before beginning, the following equipment is needed: • 15V, 1A power supply 3) Verify shunts across pins 1-2 of jumpers JU2 and JU3 (Gain = 16dB). 4) Verify shunts across pins 1-2 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. 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 4VP-P signals. The audio input source is amplified to drive 6W into an 8Ω 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. • 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 Shutdown Mode Jumpers JU1 and JU7 control the shutdown pin (SHDN) of the MAX9713. See Table 1 for the JU1 and JU7 functions. Note: Contact your local Maxim representative for recommended MAX9713 filtering component values. Gain Selection Jumpers JU2 and JU3 provide an option to select the output voltage gain. See Table 2 for JU2 and JU3 functions. See Table 5 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 3 for JU4 and JU5 functions. Table 1. JU1 and JU7 Functions (SHDN) JU1 SHUNT POSITION JU7 SHUNT POSITION EV KIT FUNCTION Pins 1 and 2 Installed (SHDN = high) EV kit enabled (default) Pins 2 and 3 Installed, without external signal (SHDN = low) Shutdown mode Pins 1 and 2 Not installed, with external signal connected to SHDN pad SHDN pin driven by external signal. Shutdown is active low. Table 2. JU2 and JU3 Functions (G1 and G2) JU2 SHUNT LOCATION JU3 SHUNT LOCATION MAX9713 OUTPUT GAIN (dB) Pins 1 and 2 (G1 = high) 1-2 (G2 = high) 16 (default) Pins 1 and 2 (G1 = high) 2-3 (G2 = low) 13 Pins 2 and 3 (G1 = low) 1-2 (G2 = high) 19.1 Pins 2 and 3 (G1 = low) 2-3 (G2 = low) 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) JU4 SHUNT LOCATION JU5 SHUNT LOCATION MAX9713 SWITCHING FREQUENCY (kHz) Pins 1 and 2 (FS1 = high) 1-2 (FS2 = high) 335 ±10%, SSM (default) Pins 1 and 2 (FS1 = high) 2-3 (FS2 = low) 236, FFM Pins 2 and 3 (FS1 = low) 1-2 (FS2 = high) 460, FFM Pins 2 and 3 (FS1 = low) 2-3 (FS2 = low) 335, FFM Note: Make sure a shunt is installed across pins 1-2 of jumper JU1. _______________________________________________________________________________________ 3 Evaluates: MAX9713 Jumper Selection Evaluates: MAX9713 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 4. JU6 Functions SHUNT POSITION Not installed Installed (VIN- pad AC-coupled to GND) 4 EV KIT INPUT MODE Differential input mode (default) Single-ended input mode Table 5. MAX9713 Power vs. Gain and Input Levels at 10% THD+N GAIN (dB) VIN DIFF RMS (V) RL (Ω) POUT AT 10% THD+N (W) 13.0 1.27 16 8 16.1 0.89 16 8 19.1 0.63 16 8 22.1 0.45 16 8 13.0 0.78 8 6 16.1 0.54 8 6 19.1 0.39 8 6 22.1 0.27 8 6 _______________________________________________________________________________________ _______________________________________________________________________________________ VIN+ GND VIN- 3 1 2 JU6 3 1 2 JU5 2 3 1 JU7 2 3 1 JU1 C10 0.47μF C9 0.47μF C11 0.01μF JU3 DVDD JU4 DVDD FB3 DVDD 1 C8 100pF FB2 SHDN DVDD JU2 DVDD C7 100pF C6 100pF D1 3 R1 10kΩ 19 18 16 15 14 10 9 12 11 1 2 3 FS2 FS1 G2 G1 N.C. 17 N.C. 8 SHDN AGND REG IN+ IN- 4 C4 0.1μF VDD VDD 3 VDD 1 2 N.C. 20 U1 N.C. 25 21 22 26 N.C. VDD VDD MAX9713 PGND PGND 31 23 24 C1N C1P SS CHOLD N.C. 32 30 29 13 7 5 6 27 OUTOUT- 28 OUT+ OUT+ PGND PGND N.C. C5 0.1μF C3 33μF 35V 4 3 C22 OPEN T1 C12 0.47μF VDD OUT- 1 C1 0.1μF C13 1μF FB1 C21 2 OPEN OUT+ C2 33μF 35V FOUT1- FOUT1+ L5 OPEN L4 OPEN C14 1000pF C18 OPEN C15 OPEN C17 OPEN GND V+ R3 OPEN C20 OPEN C16 OPEN FOUT2- C19 OPEN FOUT2+ R2 OPEN Evaluates: MAX9713 DVDD MAX9713 Evaluation Kit Figure 1. MAX9713 EV Kit Schematic 5 Evaluates: MAX9713 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 Evaluates: MAX9713 Figure 6. MAX9713 EV Kit PCB—Solder Side Figure 7. MAX9713 EV Kit Component Placement Guide— Solder Side _______________________________________________________________________________________ 7 Evaluates: MAX9713 MAX9713 Evaluation Kit Revision History REVISION NUMBER REVISION DATE 0 — 1 2 4/05 11/07 REVISION DESCRIPTION Initial release PAGES CHANGED — — Update to lead-free and RoHS-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.