Evaluates: MAX98304 19-5609 Rev 0 10/10 MAX98304 Evaluation Kit General Description Features The MAX98304 evaluation kit (EV kit) is a fully assembled S Filterless Operation Passes Radiated Emissions and tested circuit board that uses the MAX98304 filterless with 60cm of Speaker Cable Class D amplifier to drive a speaker in portable audio S 2.5V to 5.5V Single-Supply Operation applications. The EV kit comes with a MAX98304EWL+ S 3.2W Mono Class D Output in a 9-bump, 0.3mm pitch wafer-level package (WLP). Designed to operate from a 2.5V to 5.5V DC power S Selectable Gain Control supply, the EV kit is capable of delivering 3.2W into a S Differential or Single-Ended Input 4I load. The EV kit accepts differential or single-ended S Low-Power Shutdown Input input signals. S Fully Assembled and Tested Ordering Information PART TYPE MAX98304EVKIT+ EV Kit +Denotes lead(Pb)-free and RoHS compliant. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION JU3 1 5-pin, 4-way header 10F Q20%, 6.3V X5R ceramic C1 1 capacitor (0603) Not installed, inductors Murata GRM188R60J106M shorted with PCB trace L1, L2 0 provided with the EV kit: 0.1F Q10%, 16V X7R ceramic 22H Q20%, 1A inductors C2 1 capacitor (0402) TOKO A916CY-220M Murata GRM155R71C104K FOUT+, FOUT-, 0.47F Q10%, 10V X5R 4 Binding posts PVDD, PGND C3, C4 2 ceramic capacitors (0402) Murata GRM155R61A474K OUT+, OUT- 2 1-pin headers R1, R2 2 100kI Q5% resistors (0402) Not installed, ceramic C5, C6 0 capacitors (0603) Not installed, resistors (0603) R3, R4 0 provided with the EV kit: Not installed, ceramic 22I Q5% resistors (0603) capacitors (0603) provided with the EV kit: Mono Class D amplifier C7C11 0 0.22F Q10%, 25V X7R (9 WLP) U1 1 ceramic capacitors (0603) Maxim MAX98304EWL+ Murata GRM188R71E224K (Top Mark: AIR) FB1, FB2 2 0I Q5% resistors (0603) 3 Shunts INPUT 1 Black RCA jack PCB: MAX98304 EVALUATION 1 JU1 1 2-pin header KIT+ JU2 1 3-pin header 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.MAX98304 Evaluation Kit 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 MAX98304EWL+ when contacting these component suppliers. Quick Start Detailed Description of Hardware The MAX98304 EV kit features the MAX98304 filterless Recommended Equipment Class D amplifier, designed to drive a mono speaker MAX98304 EV kit in portable audio applications. The EV kit comes with a 5V, 2A DC supply MAX98304EWL+ in a 9-bump, 0.3mm pitch WLP. The 4I speaker EV kit operates from a DC power supply that provides 2.5V to 5.5V and 2A of current. The EV kit accepts a Mono audio signal source differential or single-ended audio input. The audio input Procedure source is amplified to drive 3.2W into a 4I speaker. The EV kit is fully assembled and tested. Follow the JU1 configures the EV kit inputs for single-ended or steps below to verify board operation. Caution: Do not differential operation. JU2 enables or disables the turn on the power supply until all connections are speaker amplifier. The amplifier overall gain can be set completed. between 0dB and +12dB using JU3. The EV kit provides 1) Verify that shunts are installed as follows: a set of differential outputs. The device outputs (FOUT+, JU1: Installed (single-ended input) FOUT-) can be connected directly to a speaker load without any filtering with 60cm of cable. However, filter JU2: Pins 1-2 (device enabled) components can be added to ease evaluation. See the JU3: Pins 1-5 (12dB gain) Filtered Output section for additional information. 2) Connect the power-supply positive and negative out- Input Mode puts to the PVDD and PGND pads or binding posts JU1 provides the option to select between a differential on the EV kit, respectively. or single-ended input mode for the EV kit. See Table 1 3) Verify that the audio source output is disabled. for JU1 configuration. 4) Connect the mono audio source to the INPUT RCA Table 1. Input Mode (JU1) jack or between the IN+ and IN- pads on the EV kit. 5) Connect the speaker across the FOUT+ and FOUT- SHUNT IN- PCB PAD INPUT MODE POSITION test points. Single-ended 6) Set the power-supply output to 5V. Installed* Connected to PGND input 7) Enable the power-supply output. Connected to a 8) Enable the audio source. Differential Not installed user-supplied negative input 9) Verify that the speaker is playing the audio source differential input signal. *Default position. 2 Evaluates: MAX98304