Evaluates: MAX98302 19-5218 Rev 0 4/10 MAX98302 Evaluation Kit General Description Features The MAX98302 evaluation kit (EV kit) is a fully assembled S 2.6V to 5.5V Single-Supply Operation and tested PCB that evaluates the MAX98302 stereo S Single-Ended or Differential Audio Input 2.4W Class D amplifier. The EV kit operates from a S Five Selectable Gains single 2.6V to 5.5V DC power supply. The EV kit accepts S Filterless Operation a differential or single-ended audio input and provides differential outputs for the speaker. The device outputs S Optional Class D Output Filters for Ease of can be connected directly to a speaker load for filter- Evaluation less applications however, a filter can be added to ease S Low-Power Shutdown Input evaluation. S Fully Assembled and Tested Ordering Information PART TYPE MAX98302EVKIT+ EV Kit +Denotes lead(Pb)-free and RoHS compliant. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION JU2 1 3-pin header 10FF Q20%, 10V X7R ceramic C1 1 capacitor (0805) JU3 1 5-pin header Murata GRM21BR71A106K Not installed, 22FH Q20%, 1.29A inductors 0.1FF Q10%, 16V X7R ceramic L1L4 0 TOKO A916CY-220M C2 1 capacitor (0603) (provided with EV kit) Murata GRM188R71C104K OUTL+, OUTR+ 2 Red multipurpose test points 1FF Q10%, 10V X7R ceramic C3, C4, 4 OUTL-, OUTR- 2 White multipurpose test points capacitors (0603) C17, C18 Murata GRM188R61A105K R1, R2 2 100kI Q5% resistors (0603) R3, R4, R7, R8 4 22I Q5% resistors (0603) C5, C6, 0 Not Installed, capacitors (0603) C20, C21 2W Class D amplifier U1 1 (14 TDFN-EP*) 0.22FF Q10%, 25V X7R ceramic Maxim MAX98302ETD+ C7C16 10 capacitors (0603) Murata GRM188R71E224K 4 Shunts FB1FB4 4 0I Q5% resistors (0603) PCB: MAX98302 EVALUATION 1 KIT+ JU1, JU4 2 2-pin headers *EP = Exposed pad. 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 MAX98302 when contacting these component suppliers. 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.MAX98302 Evaluation Kit Quick Start Detailed Description of Hardware Recommended Equipment Filterless Output 2.6V to 5.5V, 2A DC power supply The MAX98302 EV kits filterless outputs (OUTL+, OUTL-, OUTR+, and OUTR-) can be connected directly Stereo audio input to a speaker load without any filtering. Use the OUTL+ Two 8I speakers and OUTL- test points or the OUTR+ and OUTR- test points to connect the speaker directly to the MAX98302 Procedure output. The MAX98302 EV kit is fully assembled and test- ed. Follow the steps below to verify board operation. Filtered Output Caution: Do not turn on the power supply until all Audio analyzers typically cannot accept the Class D connections are completed. amplifiers pulse-width modulated (PWM) signals at their inputs. Therefore, the EV kit features optional lowpass 1) Verify that shunts are installed as follows: filters at the outputs to ease evaluation. To use the JU1, JU4: Installed (single-ended input) filtering output pads (FOUTL+, FOUTL-, FOUTR+, and FOUTR-), install inductors L1L4 (provided separately JU2: Pins 1-2 (device enabled) with the EV kit), connect the loads to the output pads, JU3: Pins 1-3 (12dB gain) and connect the filtered outputs to the audio analyzer. 2) Set the power-supply output to 5V. Disable the The default lowpass filters at the EV kit output are opti- power supply. mized for an 8 speaker. 3) Connect the power-supply ground terminal to the Jumper Selection GND pad and the power-supply positive terminal to Single-Ended/Differential Audio Inputs the PVDD pad on the EV kit. The EV kit features jumpers JU1 and JU4 to select 4) With the audio source disabled, connect the left between a differential or single-ended input mode. See channel of the audio source to the INL+ test pad. Table 1 for shunt positions. 5) Connect the right channel of the audio source to the Table 1. JU1 and JU4 Jumper Selection INR+ test pad. 6) Connect the audio source ground to the GND test SHUNT DEVICE IN - PIN pad. POSITION OPERATION Installed* AC-grounded Single-ended input 7) Connect the first speaker across the OUTL+ and OUTL- test points. AC-coupled to user- Not installed supplied negative Differential input 8) Connect the second speaker across the OUTR+ differential input and OUTR- test points. *Default position. 9) Enable the power-supply output. 10) Enable the audio source. 11) Verify that the speakers are playing the audio source signal. 2 Evaluates: MAX98302