Evaluates: MAX9890 19-4095 Rev 0 4/08 MAX9890 Evaluation Kit General Description Features The MAX9890 evaluation kit (EV kit) provides a proven 2.7V to 5.5V Single-Supply Operation design to evaluate the MAX9890 stereo click-pop 3.5mm Stereo Input and Output Jacks suppressor. Lead-Free and RoHS-Compliant The MAX9890 EV kit printed-circuit board (PCB) comes with a MAX9890AETA+ installed (200ms switch turn-on Proven PCB Layout time). To evaluate the 330ms switch turn-on time version, request a free sample of the MAX9890BETA+. Fully Assembled and Tested Ordering Information PART TYPE MAX9890EVKIT+ EV Kit +Denotes lead-free and RoHS-compliant. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION 1F 20%, 6.3V X5R ceramic Surface-mount, 1/8in stereo J1, J2 2 C1 1 capacitor (0603) headset jacks TDK C1608X5R0J105M JU1 1 3-pin header 0.1F 20%, 16V ceramic Audio click-pop suppressor C2 1 capacitor (0603) (8 TDFN-EP*) Murata GRM188R71C104K U1 1 Maxim MAX9890AETA+ 100F, 6.3V tantalum capacitors (Top Mark: AHA) C3, C4 2 (T case) 1 Shunt Nichicon F950J107MTAAQ2 1 PCB: MAX9890 Evaluation Kit+ Not installed, capacitors C5, C6 0 (T case) *EP = Exposed pad. Component Suppliers SUPPLIER PHONE WEBSITE Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com Nichicon USA 858-824-1515 www.nichicon-us.com TDK Corp. 847-803-6100 www.component.tdk.com Note: Indicate that you are using the MAX9890 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.MAX9890 Evaluation Kit 5) Connect power supply between VCC and GND. Quick Start 6) Enable audio source. Recommended Equipment 7) Enable headphone amplifier. Before beginning, the following equipment is needed: 8) Verify that audio is passed to headphones without MAX9890 EV kit any audible clicks or pops. 5V DC power supply Detailed Description of Hardware Stereo audio source The MAX9890 EV kit provides a proven layout for the Single-ended stereo headphone amplifier MAX9890. Stereo headphones Table 1. MAX9890 EV Kit Jumper Procedure Descriptions The MAX9890 is fully assembled and tested. Follow the steps below to verify board operation: SHUNT JUMPER DESCRIPTION 1) Verify that jumper JU1 is in its default position, as POSITION shown in Table 1. 1-2* SHDN = VCC, normal operation JU1 2) Connect headphones to J2. 2-3 SHDN = GND, shutdown mode 3) Connect headphone amplifier output to J1. *Default position. 4) Connect audio source to single-ended stereo head- phone amplifier. Figure 1. MAX9890 EV Kit Schematic 2 Evaluates: MAX9890