Evaluates: MAX9830AMAX9830E 19-4926 Rev 0 8/09 MAX9830A Evaluation Kit General Description Features S Industry-Leading Quiescent Current The MAX9830A evaluation kit (EV kit) is a fully assembled 1.6mA (V = 5V), 1.2mA (V = 3.6V) DD DD and tested circuit board that uses the MAX9830A filter- less Class D amplifier to drive a mono bridge-tied-load S Filterless Operation Passes EN55022B-Radiated (BTL) speaker in portable audio applications. Designed Emissions with Up to 24in (61cm) of Speaker Cable to operate from a 2.6V to 5.5V DC power supply, the EV kit is capable of delivering 2W into a 4I load. The EV S Evaluates the MAX9830BMAX9830E kit accepts differential or single-ended input signals. (with IC Replacement) The MAX9830A EV kit also evaluates the MAX9830B S 2.6V to 5.5V Single-Supply Operation MAX9830E. S 2W Mono Class D Output S Differential or Single-Ended Input S Low-Power Shutdown Input S Fully Assembled and Tested Ordering Information PART TYPE MAX9830AEVKIT+ EV Kit +Denotes lead(Pb)-free and RoHS compliant. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION REQUIRED COMPONENTS REQUIRED COMPONENTS 0.1FF Q10%, 25V X7R ceramic JU1 1 3-pin header capacitor (0603) JU2 1 2-pin header C1 1 Murata GRM188R71E104K L1, L2 0 Not installed, inductors TDK C1608X7R1E104K L3, L4 2 0I resistors (0805) 10FF Q20%, 6.3V X5R ceramic Ferrite bead, 100I at 100MHz, capacitor (0603) L5 1 50mI DCR, 3A (0603) C2 1 Murata GRM188R60J106M TDK MPZ16085101A TDK C1608X5R0J106M OUT-, OUT+, 2 Test points Not installed, ceramic capacitors R1, R2 2 22I Q5% resistors (0603) C3, C4 0 (0603) Mono Class D amplifier (8 TDFN) U1 1 0.47FF Q10%, 10V X7R ceramic Maxim MAX9830AETA+ capacitors (0603) C5, C6 2 2 Shunts TDK C1608X7R1A474K Murata GRM188R61A474K 1 PCB: MAX9830A EVALUATION KIT+ 0.22FF Q10%, 25V X7R ceramic OPTIONAL COMPONENTS capacitors (0603) C7C11 5 Murata GRM188R71E224K 22FH Q20%, 0.7A inductors L1, L2 2 TDK C1608X7R1E224K TOKO A915AY-220M 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.MAX9830A Evaluation Kit Component Suppliers SUPPLIER PHONE WEBSITE Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com TDK Corp. 847-803-6100 www.component.tdk.com TOKO America, Inc. 847-297-0070 www.tokoam.com Note: Indicate that you are using the MAX9830A when contacting these component suppliers. Quick Start Detailed Description of Hardware The MAX9830A EV kit features the MAX9830A filterless Recommended Equipment Class D amplifier IC, designed to drive a BTL mono U 2.6V to 5.5V, 1A DC supply speaker in portable audio applications. The EV kit oper- U 4I speaker ates from a DC power supply that provides 2.6V to 5.5V U Mono audio signal source and 1A of current. The EV kit accepts a differential or single-ended audio input. The audio input source is Procedure amplified to drive 2W into a 4I speaker. The MAX9830A EV kit is fully assembled and tested. The EV kit provides two sets of differential outputs. The Follow the steps below to verify board operation. Caution: device outputs (OUT+, OUT-) can be connected directly to Do not turn on the power supply until all connections a speaker load, without any filtering, with up to 24in (61cm) are completed. of cable. However, a filter can be added to ease evaluation. 1) Verify that shunts are installed as follows: JU1: Pins 1-2 (device enabled) Speaker Amplifier Shutdown JU2: Installed (single-ended input) Jumper JU1 enables or disables the speaker amplifier. See Table 1 for jumper JU1 configuration. 2) Set the power-supply output to 5V. 3) Disable the power-supply output. Input Mode Jumper JU2 provides the option to select between a dif- 4) Connect the power-supply ground to the GND pad ferential or single-ended input mode for the EV kit. See and the power-supply positive output to the VDD Table 2 for JU2 configuration. pad on the EV kit. 5) Verify that the audio source output is disabled. Table 1. Shutdown Input (JU1) 6) Connect the mono audio source between the SHUNT AMPLIFIER INPUT+ and INPUT- pads on the EV kit. SHDN PIN POSITION 7) Connect the speaker across the OUT+ and OUT- 1-2* Connected to VDD Enabled test points. 2-3 Connected to GND Disabled 8) Enable the power-supply output. *Default position. 9) Enable the audio source. Table 2. JU2 Settings 10) Verify that the speaker is playing the audio source SHUNT INPUT signal. IN- PIN POSITION MODE Single- Installed* Connected to GND ended input Connected to user-supplied Differential Not installed negative differential input input *Default position. 2 Evaluates: MAX9830AMAX9830E