MAX7042 Evaluation Kit Evaluates: MAX7042 General Description Features The MAX7042 evaluation kit (EV kit) allows for a detailed S Proven PCB Layout evaluation of the MAX7042 superheterodyne receiver. S Proven Components Parts List It enables testing of the devices RF performance and S Multiple Test Points Provided On Board requires no additional support circuitry. The RF input S Available in 315MHz or 433.92MHz Optimized circuit is designed to work with a 50I source imped- ance RF signal generator and has an SMA connector for Versions convenient connection to test equipment. The EV kit can S 308MHz and 418MHz Operation Possible by also directly interface to the users embedded design for Changing Components easy data decoding. S Fully Assembled and Tested The MAX7042 EV kit comes in two versions, a 315MHz S Can Operate as a Stand-Alone Receiver with the version and a 433.92MHz version. The passive com- Addition of an Antenna ponents are optimized for these frequencies. These components can be changed to work at 308MHz and 418MHz. In addition, the 4kbps Manchester received Ordering Information data rate can be adjusted from 0kbps to 33kbps by changing two more components. PART TYPE For easy implementation into the customers design, the MAX7042EVKIT-315+ EV Kit MAX7042 EV kit also features a proven PCB layout that MAX7042EVKIT-433+ EV Kit can be duplicated easily for quicker time to market. The +Denotes lead(Pb)-free and RoHS compliant. EV kit Gerber files are available upon request. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION 0.01FF Q10%, 50V X7R ceramic 220pF Q10%, 50V C0G ceramic C1, C20, C21 3 capacitors (0603) C11, C18 2 capacitors (0603) Murata GRM188R71H103K Murata GRM1885C1H221K 0.1FF Q10%, 16V X7R ceramic 1500pF Q10%, 50V X7R ceramic C2, C22 2 capacitors (0603) C12 1 capacitor (0603) Murata GRM188R71C104K Murata GRM188R71H152K 15pF Q5%, 50V C0G ceramic 0.047FF Q10% 50V X7R ceramic C14, C15, C3, C4 2 capacitors (0603) 3 capacitors (0603) C16 Murata GRM1885C1H150J Murata GRM188R71H473K C5, C6, C13, Not installed, ceramic capacitors 470pF Q5% 50V C0G ceramic 0 C19 (0603) C17 1 capacitor (0603) Murata GRM1885C1H471JA01 100pF Q5%, 50V C0G ceramic C7, C8, C9 3 capacitors (0603) GND, TP8 2 Black miniature test points Murata GRM1885C1H101J JU1, JU4JU11 9 3-pin headers JU2, JU3 0 Not installed, 3-pin headers 315MHz: JU12 1 2-pin header 1.2pF Q0.1pF, 50V C0G ceramic capacitor (0603) 315MHz: Murata GRM1885C1H1R2B C10 1 82nH Q5% inductor (0603) Coilcraft 0603CS-82NXJLU 433.92MHz: L1 1 Not installed, ceramic capacitor 433.92MHz: (0603) 39nH Q 5% inductor (0603) Coilcraft 0603CS-39NXJLU For pricing, delivery, and ordering information, please contact Maxim Direct 19-4963 Rev 0 9/09 at 1-888-629-4642, or visit Maxims website at www.maximintegrated.com.MAX7042 Evaluation Kit Evaluates: MAX7042 Component List (continued) DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION TP1TP7, VDD 8 Red miniature test points 315MHz: 3.9nH Q5% inductor (0603) Low-power, FSK superheterodyne Coilcraft 0603CS-3N9XJLU L2 1 U1 1 receiver (32 TQFN-EP*) Maxim MAX7042ATJ+ 433.92MHz: 0I Q5% resistor (0603) 315MHz: 315MHz: 9.509375MHz crystal 30nH Q5% inductor (0603) Crystek 017034 Y1 1 Murata LQW18AN30NJ00 433.92MHz: L3 1 433.92MHz: 13.2256MHz crystal 16nH Q5% inductor (0603) Crystek 017035 Murata LQW18AN16NJ00 10.7MHz ceramic filter Y2 1 R1, R5 0 Not installed, resistors (0603) TOKO SK107M1N-AO-10 R2, R3, R4 3 100kI Q5% resistors 9 Shunts REF IN, Not installed, SMA female vertical- 1 PCB: MAX7042 EVALUATION KIT+ 0 MIXOUT mount connectors *EP = Exposed pad. RF IN 1 SMA female vertical-mount connector Component Suppliers SUPPLIER PHONE WEBSITE Coilcraft, Inc. 847-639-6400 www.coilcraft.com Crystek Corporation 800-237-3061 www.crystek.com 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 MAX7042 when contacting these component suppliers. 1) Verify that the jumpers are in their default position, Quick Start as shown in Table 1. Required Equipment 2) Connect a DC supply set to 3.3V (through an amme- MAX7042 EV kit ter, if desired) to the VDD and GND terminals on the Regulated power supply capable of providing 3.3V EV kit. Do not turn on the power supply. RF signal generator capable of delivering -120dBm 3) Connect the RF signal generator to the RF IN SMA to 0dBm output power at the operating frequency, in connector. Do not turn on the generator output. addition to frequency modulation (FM) capabilities Set the generator for an output carrier frequency (Agilent E4420B or equivalent) of 315MHz (or 433.92MHz) at a power level of -100dBm. Set the modulation of the generator to Optional ammeter for measuring supply current provide a FSK signal with 50kHz frequency devia- Oscilloscope tion modulated with a 4kHz square wave. Procedure 4) Connect the oscilloscope to test point TP6 (DS+ or The MAX7042 EV kit is fully assembled and test- data slicer positive input). Set the oscilloscope to ed. Follow the steps below to verify board operation. AC-coupling and set the vertical scale to approxi- Caution: Do not turn on the DC power supply or RF mately 100mV/div. signal generator until all connections are completed. 2 Maxim Integrated