Evaluates: MAX9892 19-4470 Rev 0 2/09 MAX9892 Evaluation Kit General Description Features The MAX9892 evaluation kit (EV kit) is an assembled 2.7V to 5.5V DC Single-Supply Operation (On- Board Headphone Amplifier) and tested PCB that evaluates the MAX9892 IC. The MAX9892 is an audio click-and-pop eliminator IC. 1.7V to 5.5V DC Single-Supply Operation (External The EV kit circuit includes an on-board MAX4338 head- Headphone Amplifier) phone amplifier, two RCA audio input jacks, and a Proven Audio PCB Layout headphone jack to demonstrate the performance of the On-Board MAX4338 Headphone Amplifier MAX9892. The EV kit operates from a 2.7V to 5.5V DC power supply. RCA Audio Input Jacks The MAX9892 EV kit can also eliminate the audible Headphone Output Jack clicks and pops of an external headphone amplifier PCB Pads for Audio Input and Output Signals connected to the EV kit. When utilizing an external headphone amplifier, the MAX9892 EV kit can operate Evaluates the MAX9892ERT+ in a 6-Bump UCSP (2 x 3 Array) Package from a lower input-voltage range of 1.7V to 5.5V DC. Lead(Pb)-Free and RoHS Compliant Fully Assembled and Tested Ordering Information PART TYPE MAX9892EVKIT+ EV Kit UCSP is a trademark of Maxim Integrated Products, Inc. +Denotes lead(Pb)-free and RoHS compliant. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION 0.1F 10%, 10V X5R ceramic JU1, JU4 2 3-pin headers C1 1 capacitor (0603) JU2, JU3, JU5 3 2-pin headers Murata GRM188R61E104K RCA phono jack, white (side LIN 1 560pF 5%, 50V C0G ceramic entry, PCB mount) C2 1 capacitor (0603) RCA phono jack, red (side entry, Murata GRM1885C1H561J RIN 1 PCB mount) 1F 10%, 6.3V X5R ceramic R1 1 100k 5% resistor (0603) C3 1 capacitor (0402) Murata GRM155R60J105K R2 1 180k 5% resistor (0603) 0.1F 10%, 6.3V X5R ceramic R3R7 5 100k 5% resistors (0402) C4 1 capacitor (0402) R8, R9 2 22.1k 1% resistors (0402) Murata GRM155R60J104K R10, R11 2 47.5k 1% resistors (0402) 0.47F 10%, 6.3V X5R ceramic R12, R13 2 30 5% resistors (0603) capacitors (0402) C5, C6 2 R14, R15 0 Not installed, resistors (0603) Murata GRM155R60J474K 100pF 5%, 50V C0G ceramic Audio click-and-pop C7, C8 2 capacitors (0402) eliminator (6 UCSP) U1 1 Murata GRM1555C1H101J Maxim MAX9892ERT+T (Top Mark: AAE) 220F 20%, 6.3V tantalum capacitors (C case) C9, C10, C11 3 Headphone amplifier (10 MAX ) U2 1 AVX TPSC227M006R0125 Maxim MAX4338EUB+ GND, INL, INR 0 Not installed, test points 5 Shunts (JU1JU5) 3.5mm stereo headphone jack 1 PCB: MAX9892 Evaluation Kit+ HPOUT 1 (SMT, 3 position, non switch) MAX is a registered trademark of Maxim Integrated Products, Inc. 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.MAX9892 Evaluation Kit 9) Verify that audible click or pop sounds are not Component Suppliers detected while removing and reinstalling the shunt on jumper JU5. SUPPLIER PHONE WEBSITE AVX Corporation 843-946- 0238 www.avxcorp.com Detailed Description of Hardware M urata El ectron ics The MAX9892 EV kit evaluates the MAX9892 IC, an 770-436- 1300 www .m ur at a-no rth amer ic a.com N orth Amer i ca, Inc. audio click-and-pop eliminator in a 6-bump UCSP package. The MAX9892 provides low-impedance paths Note: Indicate that you are using the MAX9892 when contacting these component suppliers. to ground for headphone amplifier outputs during start- up and shutdown to eliminate audible clicks and pops. Quick Start The EV kit features an on-board MAX4338 headphone amplifier, two RCA audio input jacks, and a headphone Required Equipment jack to demonstrate the performance of the MAX9892. Before beginning, the following equipment is needed: When utilizing the on-board headphone amplifier, the MAX9892 EV kit EV kit operates from a 2.7V to 5.5V DC power supply connected to the VCC and GND pads. 2.7V to 5.5V, 100mA DC power supply The MAX9892 also eliminates audible click-and-pop One stereo audio source sounds from an external headphone amplifier connect- One pair of headphones ed to the EV kit. To eliminate the audible clicks and pops from an external headphone amplifier, connect Procedure the external headphone amplifier outputs to the HPL, The MAX9892 EV kit is fully assembled and tested. HPR, and GND PCB pads on the EV kit. Connect the Follow the steps below to verify board operation. external headphone amplifier shutdown signal(s) to the Caution: Do not turn on the power supply until all SHDN PCB pad, and the external headphone amplifier connections are completed. ground to the GND pad on the MAX9892 EV kit. See 1) Verify that a shunt is installed on pins 1-2 of jumper the Jumper Selection section to reconfigure jumpers JU1. This configures the EV kit to accept power for JU1JU4. The MAX9892 can operate from a lower both the MAX9892 and the on-board MAX4338 input-voltage range of 1.7V to 5.5V DC connected headphone amplifier. between the VDD and GND PCB pads when operating 2) Verify that shunts are installed on jumpers JU2 and with an external headphone amplifier. JU3. This configures the MAX9892 to accept the Jumper Selection on-board MAX4338 headphone amplifier outputs. The MAX9892 EV kit can be configured to operate with 3) Verify that a shunt is installed on pins 1-2 of jumper an on-board headphone amplifier or an external head- JU4. This connects the MAX9892s MUTE pin to the phone amplifier. Use jumpers JU1JU4 to select MAX4338 SHDN1 and SHDN2 pins. between on-board or external headphone amplifier 4) Verify that a shunt is not installed on jumper JU5. operation for the MAX9892 EV kit. This enables the on-board MAX4338 headphone MAX9892 EV Kit Power Supply (VCC/VDD) amplifier outputs. When operating with the on-board headphone amplifi- 5) Connect the audio source outputs to the LIN and er, the EV kit requires a single DC power supply with an RIN RCA jacks. input-voltage range between 2.7V and 5.5V connected 6) Connect the headphone to the HPOUT headphone between the VCC and GND pads. When operating with jack. an external headphone amplifier, the MAX9892 EV kit can operate at a lower input-voltage range of 1.7V to 7) Connect the power supply across the VCC and 5.5V connected between the VDD and GND pads. GND PCB pads. Jumper JU1 configures the input power supply for the 8) Turn on the audio source. Turn on the power supply MAX9892 EV kit. Table 1 lists the selectable jumper and set the supply voltage to 5V. options for JU1. 2 Evaluates: MAX9892