Evaluates: MAX14535E 19-4510 Rev 0 3/09 MAX14535E Evaluation Kit General Description Features The MAX14535E evaluation kit (EV kit) demonstrates Input Shunt Resistors for Built-In Click-and-Pop the MAX14535E double-pole/double-throw (DPDT) ana- Reduction log switch featuring negative signal capability, low on- Low 0.135 On-Resistance (R ) ON resistance (0.135 R ), and input shunt resistors on ON the NO terminals for click-and-pop reduction in -1.5V to Min (3V or VCC) Analog Signal Capability portable audio applications. The IC features a space- +2.4V to +5.5V DC Supply Operation saving ultra-thin QFN package. The EV kit can operate from a +2.4V to +5.5V DC power supply and comes Demonstrates USB Power Operation configured to operate from USB power. Lead(Pb)-Free and RoHS Compliant Fully Assembled and Tested Ordering Information PART TYPE MAX14535EEVKIT+ EV Kit +Denotes lead(Pb)-free and RoHS compliant. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION 0.1F 10%, 16V X7R ceramic OUT 1 Stereo headphone jack (3.5mm) capacitors (0603) C1, C3C7 6 R1R4 4 0 5% resistors (1206) Murata GRM188R71C104K USB 1 USB type-B right-angle receptacle 10F 10%, 10V X7R ceramic DPDT analog switch (10 UTQFN) C2 1 capacitor (0805) U1 1 Maxim MAX14535EEVB+ Murata GRM21BR71A106K (Top Mark: AAS) Not installed, ferrite-bead inductor 3 Shunts (JU1, JU2, JU3) FB1 0 (0603) 1 PCB: MAX14535E Evaluation Kit+ JU1, JU2, JU3 3 3-pin headers Component Supplier SUPPLIER PHONE WEBSITE Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com Note: Indicate that you are using the MAX14535E when contacting this component supplier. 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.MAX14535E Evaluation Kit source connected to the NC 1 and NC 2 PCB Quick Start pads. Required Equipment 9) Move the jumper JU3 shunt to pins 1-2. User-supplied PC with a spare USB port 10) Verify that the headphone is playing the audio A-to-B USB cable source connected to the NO 1 and NO 2 PCB One stereo headphone pads. Two audio signal sources ranging between -1.5V Detailed Description of Hardware and +3V The MAX14535E evaluation kit (EV kit) demonstrates Procedure the MAX14535E DPDT analog switch in a 1.4mm x The MAX14535E EV kit is fully assembled and tested. 1.8mm, 10-pin ultra-thin QFN package specified for Follow the steps below to verify board operation. operating over the -40C to +85C extended tempera- Caution: Do not connect a signal to the NO 1, ture range. The IC features internal input shunt resistors NO 2, NC 1, or NC 2 PCB pads until a powered on the NO terminals. This provides coupling capaci- USB cable is connected to the USB receptacle or tors a place to discharge while the switch is set to the until power is supplied across the VIN and GND NC terminals providing click-and-pop reduction with- PCB pads. out additional parts in portable audio applications. The IC features low 0.135 R resistance. An active-high ON 1) Connect the powered USB cable from the comput- enable pin (EN) sets the switches to either high-imped- er to the EV kits USB receptacle. ance mode or normal operation. The COM1, COM2, 2) Verify that shunts are installed as follows: NC 1, NC 2, NO 1, and NO 2 PCB pads can pass up JU1: Pins 1-2 (USB power) to 300mA of continuous current through the MAX14535E IC. The EV kit can operate from a +2.4V to JU2: Pins 1-2 (switches enabled) +5.5V DC power supply and also comes configured to JU3: Pins 2-3 (NC terminals selected) operate from USB power. 3) Verify that the audio source outputs are disabled. The user may install optional input resistors in place of 4) Connect one audio sources right channel to the the default 0 resistors (R1R4). PCB pads COM1, NC 1 PCB pad, the left channel to the NC 2 PCB COM2, and GND provide access to the headphone pad, and the audio ground return to the nearby jack OUT signals. GND PCB pad. Power Supply 5) Connect the other audio sources right channel to Jumper JU1 provides two options for powering the the NO 1 PCB pad, the left channel to the NO 2 MAX14535E VCC supply input. VCC can operate from PCB pad, and the audio ground return to the near- a user-supplied +2.4V to +5.5V DC power supply con- by GND PCB pad. nected across the VIN and GND PCB pads or from a 6) Plug the headphone into the OUT headphone jack. +5V USB power source. See Table 1 to configure the VCC supply options using jumper JU1. 7) Enable the audio sources. 8) Verify that the headphone is playing the audio Table 1. Power Supply Configuration (JU1) SHUNT POSITION VCC PIN CONNECTION MAX14535E VCC POWER Connect a powered USB cable to the USB receptacle. VCC set to +5V USB 1-2* +5V power.** User-provided DC power supply. 2-3 VIN PCB pad VCC range: +2.4V to +5.5V** *Default position. **Do not connect a signal to the NO 1, NO 2, NC 1, or NC 2 PCB pads until a powered USB cable is connected to the USB receptacle, or until power is supplied across the VIN and GND PCB pads 2 Evaluates: MAX14535E