Evaluates: MAX98300 in a TDFN 19-5461 Rev 0 7/10 MAX98300 Evaluation Kit (TDFN) General Description Features The MAX98300 evaluation kit (EV kit) is a fully S Demonstrates Industry-Leading Quiescent assembled and tested circuit board that uses the Current MAX98300 filterless Class D amplifier to drive a speak- 1.1mA (PVDD = 5V), 0.78mA (PVDD = 3.7V) er in portable audio applications. The EV kit comes S Filterless Operation Passes Radiated Emissions with a MAX98300 IC in an 8-pin TDFN package. with Up to 60cm of Speaker Cable Designed to operate from a 2.6V to 5.5V DC power S 2.6V to 5.5V Single-Supply Operation supply, the EV kit is capable of delivering 2.6W into a 4I load. The EV kit accepts differential or single-ended S 2.6W Mono Class D Output input signals. S Selectable Gain Control S Differential or Single-Ended Input S Low-Power Shutdown Input S Fully Assembled and Tested Ordering Information PART TYPE MAX98300EVKIT+TDFN EV Kit +Denotes lead(Pb)-free and RoHS compliant. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION MINIMAL COMPONENTS FOR CUSTOMER DESIGN FB1, FB2 2 0I Q5% resistors (0805) JU1 1 3-pin header 0.1FF Q10%, 16V X7R ceramic C1 1 capacitor (0603) JU2 1 2-pin header Murata GRM188R71C104K JU3 1 4-way 5-pin header 10FF Q10%, 10V X5R ceramic Not installed, inductors C2 1 capacitor (0805) L1, L2 0 Recommended: Murata GRM219R61A106K TOKO A916CY-220M OUT+ 1 Standard PCB test point, red 1FF Q10%, 10V X5R ceramic C5, C6 2 capacitors (0603) OUT- 1 Standard PCB test point, white Murata GRM188R61A105K R1, R2 2 22I Q1% resistors (0603) R3, R4 2 100kI Q5% resistors (0603) Mono Class D amplifier (8 TDFN-EP*) 3 Shunts (JU1, JU2, JU3) U1 1 Maxim MAX98300ETA+ PCB: MAX98300 EVALUATION 1 (Top Mark: ADB) KIT+ (TDFN) OPTIONAL COMPONENTS FOR CUSTOMER *EP = Exposed pad. EVALUATION Not installed, ceramic capacitors C3, C4 0 (0603) 0.22FF Q10%, 25V X7R ceramic C7C11 5 capacitors (0603) Murata GRM188R71E224K Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.MAX98300 Evaluation Kit (TDFN) Component Suppliers SUPPLIER PHONE WEBSITE Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com TOKO America, Inc. 847-297-0070 www.tokoam.com Note: Indicate that you are using the MAX98300ETA+ when contacting these component suppliers. Quick Start Detailed Description of Hardware The MAX98300 EV kit features the MAX98300 filterless Recommended Equipment Class D amplifier IC, which is designed to drive a mono MAX98300 EV kit (TDFN) speaker in portable audio applications. The EV kit comes 2.6V to 5.5V, 2A DC supply with a MAX98300 IC in an 8-pin TDFN package. The EV 4I speaker kit operates from a DC power supply that provides 2.6V to 5.5V and 2A of current. The EV kit accepts a differen- Mono audio signal source tial or single-ended audio input. The audio input source Procedure is amplified to drive 2.6W into a 4I speaker. The EV kit is fully assembled and tested. Follow the Jumper JU1 enables or disables the speaker amplifier. steps below to verify board operation. Caution: Do not Jumper JU2 configures the EV kit inputs for single-ended turn on the power supply until all connections are or differential operation. The amplifier overall gain can completed. be set between 0dB and +12dB using jumper JU3. The 1) Verify that shunts are installed as follows: EV kit provides a set of differential outputs. The device outputs (OUT+, OUT-) can be connected directly to a JU1: Pins 1-2 (device enabled) speaker load without any filtering and up to 60cm of JU2: Installed (single-ended input) cable. However, filter components can be added to ease JU3: Pins 1-5 (0dB gain) evaluation. See the Output Filtering Options section for 2) Connect the power-supply positive and negative additional information. outputs to the PVDD and PGND PCB pads on the Shutdown EV kit, respectively. Jumper JU1 enables or disables the audio speaker 3) Verify that the audio source output is disabled. amplifier. See Table 1 for jumper JU1 configuration. 4) Connect the mono audio source between the Table 1. Shutdown (JU1) INPUT+ and INPUT- pads on the EV kit. SHUNT 5) Connect the speaker across the OUT+ and OUT- AMPLIFIER SHDN PIN POSITION test points. 1-2* Connected to PVDD Enabled 6) Set the power-supply output to 5V. 2-3 Connected to PGND Disabled 7) Enable the power-supply output. *Default position. 8) Enable the audio source. 9) Verify that the speaker is playing the audio source signal. 2 Evaluates: MAX98300 in a TDFN