Evaluates: MAX1479 19-3726 Rev 0 5/05 MAX1479 Evaluation Kit General Description Features The MAX1479 evaluation kit (EV kit) allows for a detailed Proven PC Board Layout evaluation of the MAX1479 ASK/FSK transmitter. It Proven Components Parts List enables testing of the devices RF performance and requires no additional support circuitry. The RF output Multiple Test Points Provided on Board uses a 50 matching network and an SMA connector for Available in 315MHz or 433.92MHz Optimized convenient connection to test equipment. A reverse polar- ity SMA is also included to connect to a 1/4 wave whip Versions antenna. The EV kit can also directly interface to the Adjustable Frequency Range from 300MHz to users embedded design for easy data encoding. 450MHz* The MAX1479EV kit comes in two versions: a 315MHz Fully Assembled and Tested version and a 433.92MHz version. The passive compo- nents are optimized for these frequencies. These compo- Can Operate as a Stand-Alone Transmitter with nents can easily be changed to work at RF frequencies Included Battery from 300MHz to 450MHz. *Requires component changes. For easy implementation into the customers design, the MAX1479EV kit also features a proven PC board layout, Ordering Information which can be easily duplicated for quicker time-to- market. The EV kit Gerber files are available for down- PART TEMP RANGE IC PACKAGE load at www.maxim-ic.com. MAX1479EVKIT-315 -40C to +85C 16 Thin QFN MAX1479EVKIT-433 -40C to +85C 16 Thin QFN Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION 15pF 5%, 50V ceramic capacitors 0.47F +80/-20%, 16V ceramic C1, C6 capacitors (0603) Y5V 2 (0603) C7, C9 2 (315MHz) Murata GRM1885C1H150J Murata GRM188F51C474Z 6.8pF 0.5pF, 50V ceramic capacitors 220pF 5%, 50V ceramic capacitors C1, C6 2 (0603) C0G C8, C11, C12 3 (0603) (433MHz) Murata GRM1885C1H221J Murata GRM1885C1H6R8D 22pF 5%, 50V ceramic capacitor 2.2pF 0.5pF, 50V ceramic capacitor C2 (315MHz) 1 (0603) C0G C13 (315MHz) 1 (0603) C0G Murata GRM1885C1H220J Murata GRM1885C1H2R2D 10pF 5%, 50V ceramic capacitor 1.0pF 0.5pF, 50V ceramic capacitor C2 (433MHz) 1 (0603) C0G C13 (433MHz) 1 (0603) C0G Murata GRM1885C1H100J Murata GRM1885C1H1R0D 100pF 5%, 50V ceramic capacitors 0.01F 10%, 50V ceramic capacitors (0603) C14, C15 2 (0603) C3, C10 2 Murata GRM188R71H103KA01 Murata GRM1885C1H101J 3-pin headers 680pF 5%, 50V ceramic capacitor JU1JU10 10 Digi-Key S1012-36-ND or equivalent C4 1 (0603) C0G Murata GRM1885C1H681J 27nH 5% inductor (0603) L1 (315MHz) 1 Coilcraft 0603CS-27NXJB C5, C16, 0 Not installed C18, C19 22nH 5% inductor (0603) L1 (433MHz) 1 Coilcraft 0603CS-22NXJB Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.MAX1479 Evaluation Kit Component List (continued) DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION SMA connector top mount, not installed 22nH 5% inductor (0603) L2 (315MHz) 1 Coilcraft 0603CS-22NXJB REF IN 1 Digi-Key J500-ND Johnson 142-0701-201 18nH 5% inductor (0603) L2 (433MHz) 1 Coilcraft 0603CS-18NXJB SMA connector top mount Digi-Key J500-ND RF OUT 1 5k potentiometer R1 1 Johnson 142-0701-201 BC Components SM4W502 U1 1 MAX1479ATE 0 resistor (0603), any, R2 0 not installed VDD, VSS, ENABLE, Test points R3 1 5.1 5% resistor (0603), any 5 DATA IN, Mouser 151-203 or equivalent R4 1 0 resistor (0603), any CKOUT 315MHz 1/4-wave whip antenna, Antenna 0 not provided Crystal 9.84375MHz (315MHz) Lynx ANT-315-CW-RH Hong Kong Crystal Y1 (315MHz) 1 SSL9843750E03FAFZ800 or 433MHz 1/4-wave whip antenna, Crystek 017000 Antenna not provided 1 (433MHz) Lynx ANT-433-CW-RH Crystal 13.56MHz Hong Kong Crystal RP-SMA connector Y1 (433MHz) 1 ANTE N N A OUT1 SSM1356000E03FAFZ800 or Linx CONREVSMA001 Crystek 017001 Battery holder BAT1 1 Shunt (JU1) MPD BA2032 10 Digi-Key S9000-ND or equivalent Coin-cell battery Battery 1 1 MAX1479 EV kit PC board Panasonic BR2032 Connections and Setup This section provides a step-by-step guide to operating Component Suppliers the EV kit and testing the devices functionality. Do not SUPPLIER PHONE FAX turn on the DC power until all connections are made: Coilcraft 800-322-2645 847-639-1469 1) Connect a DC supply set to +3.0V, through an ammeter, to the VDD and VSS terminals on the EV Crystek 800-237-3061 941-561-1025 kit. Do not turn on the supply. Hong Kong Crystal 852-2412-0121 852-2498-5908 2) Connect the RF OUT SMA connector to the spec- Murata 800-831-9172 814-238-0490 trum analyzer. Set the analyzer to a center frequency Note: Indicate you are using the MAX1479 when contacting of 315MHz (or 433.92MHz) and a span of 1MHz. these manufacturers. 3) Turn on the DC supply. The spectrum analyzer should display a peak of about +10dBm at Quick Start 315MHz (or 433.92MHz). The following procedure allows for proper device 4) Disconnect the spectrum analyzer and connect evaluation. the power meter instead. Measure the output Required Test Equipment power and also the current draw. Regulated power supply capable of providing +3.0V 5) Calculate the efficiency. This is done using the Spectrum analyzer such as the Agilent 8562E following equation: (P /10)/(V x I) Efficiency = 10 OUT Optional ammeter for measuring supply current For example, for a +10.8dBm output, and a Power meter such as the Agilent EPM-441A 10.9mA (at 3.0V) current, the efficiency is 37%. 2 Evaluates: MAX1479