Evaluates: MAX1473 19-2960 Rev 1 5/05 MAX1473 Evaluation Kit General Description Features The MAX1473 evaluation kit (EV kit) allows for a Proven PC Board Layout detailed evaluation of the MAX1473 superheterodyne Proven Components Parts List receiver. It enables testing of the devices RF perfor- mance and requires no additional support circuitry. The Multiple Test Points Provided On-Board RF input uses a 50 matching network and an SMA Available in 315MHz or 433.92MHz Optimized connector for convenient connection to test equipment. The EV kit can also directly interface to the users Versions embedded design for easy data decoding. Adjustable Frequency Range from 300MHz to The MAX1473 EV kit comes in two versions: a 315MHz 450MHz* version and a 433.92MHz version. The passive compo- Fully Assembled and Tested nents are optimized for these frequencies. These com- ponents can easily be changed to work at RF frequen- Can Operate as a Stand-Alone Receiver with cies from 300MHz to 450MHz. In addition, the 5kbps Addition of an Antenna data rate received can be adjusted from 0 to 100kbps *Requires component changes by changing two more components. For easy implementation into the customers design, the Ordering Information MAX1473 EV kit also features a proven PC board lay- PART TEMP RANGE IC PACKAGE out, which can be easily duplicated for quicker time-to- market. The EV kit Gerber files are available for down- MAX1473EVKIT-315 -40C to +85C 28 TSSOP load at www.maxim-ic.com. MAX1473EVKIT-433 -40C to +85C 28 TSSOP Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION 0.01F 10% ceram i c cap acitor s (060 3) 15pF 5%, 50V ceramic capacitors C1, C2 2 Murata GRM188R71H103KA01 (0603) C14, C15 2 Murata GRM1885C1H150JZ01 1500pF 10%, 50V X7R ceramic C3 1 capacitor (0603) 0.01F +80% - 20% ceramic Murata GRM188R71H152KA01 C17 0 capacitor (0603), not installed Murata GRM188R71H103KA01 0.47F +80% - 20% ceramic C4 1 capacitor (0603) C21 1 0 resistor (0603) Murata GRM188F51C474ZA01 SMA connector edge mount, not F IN 0 installed 470pF 5% ceramic capacitor (0603) C5 1 Johnson 142-0701-801 Murata GRM1885C1H471JA01 JU1, JU2, JU5, 3-pin headers 220pF 5% ceram i c capac i tor s (060 3) 4 C6, C10 2 JU6 Digi-Key S1012-36-ND or equivalent Murata GRM1885C1H221JA01 JU7 1 2-pin header 100pF 5% ceram i c capac i tors ( 060 3) C7, C8, C11 3 JU3, JU4 0 Not installed Murata GRM1885C1H101JA01 JU8 1 Shorted 4pF 0.1pF cer am i c cap aci tor ( 0603) C9 (315MHz) 1 Murata GRM1885C1H4R0BZ01 Shunts (JU1) 5 Digi-Key S9000-ND or equivalent 2.2pF 0.1pF cer am i c cap aci tor ( 0603) C9 (433MHz) 1 Murata GRM1885C1H2R2BD01 27nH 5% inductor (0603) L1 (315MHz) 1 Coilcraft 0603CS-27NXJB 0.1F 5% ceramic capacitors (0603) C12, C20 2 Murata GRM188R71C104KA01 C13, C16, C18, 0 Not installed C19 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.MAX1473 Evaluation Kit Component List (continued) DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION 15nH 5% inductor (0603) 1000pF 10%, 50V X7R ceramic L1 (433MHz) 1 Coilcraft 0603CS-15NXJB R9 1 capacitor (0603) Murata GRM188R71H102KA01 120nH 5% inductor (0603) L2 (315MHz) 1 Coilcraft 0603CS-R12XJB SMA connector top mount RF IN 1 Digi-Key J500-ND 56nH 5% inductor (0603) L2 (433MHz) 1 Johnson 142-0701-201 Coilcraft 0603CS-56NXJB TP2, TP4TP12 0 Not installed 15nH 5% inductor (0603) L3 1 Murata LQG18HN15NJ00 VDD, GND, SHDN, Test points S M A connector top m ount, not ins tall ed 5 DATA OUT, Mouser 151-203 or equivalent MIX OUT 0 Digi-Key J500-ND TP3 Johnson 142-0701-201 Crystal 4.754687MHz R1 1 5.1k resistor (0603), any Hong Kong Crystal R2, R4, R6 0 Resistor (0603), not installed Y1 (315MHz) 1 SSL4754687E03FAFZ8A0 or R3 0 270 r esi stor ( 0603), any , not ins tall ed Crystek 016867 R5 1 10k resistor (0603), any Crystal 6.6128MHz 10pF 5%, 50V cerami c capacito r ( 0603) Hong Kong Crystal R7 1 Y1 (433MHz) 1 M urata GRM1 885C1H10 0JZ01 SSL6612813E03FAFZ8A0 or Crystek R8 1 10k resistor (0603), any 016868 10.7MHz ceramic filter Y2 1 Quick Start Murata SFTLA10M7FA00-B0 The following procedure allows for proper device evalu- U1 1 MAX1473EUI ation. 1 MAX1473 EV kit PC board Required Test Equipment AM-modulated square wave (or a 2kHz pulse-modu- Regulated power supply capable of providing +3.3V lated signal). RF signal generator capable of delivering from 3) Connect the oscilloscope to test point TP3. -120dBm to 0dBm of output power at the operating 4) Turn on the DC supply. The supply current should frequency, in addition to AM or pulse-modulation read approximately 5mA. capabilities (Agilent E4420B or equivalent) 5) Activate the RF generators output without modulation. Optional ammeter for measuring supply current The scope should display a DC voltage that varies Oscilloscope from approximately 1.2V to 2.0V as the RF generator amplitude is changed from -115dBm to 0dBm. (Note: Connections and Setup At an input amplitude of around -60dBm, this DC This section provides a step-by-step guide to operating voltage will drop suddenly to about 1.5V and then the EV kit and testing the devices functionality. Do not rise again with increasing input amplitude. This is turn on the DC power or RF signal generator until all normal the AGC is turning on the LNA gain reduc- connections are made: tion resistor). 1) Connect a DC supply set to +3.3V (through an 6) Set the RF generator to -100dBm. Activate the RF ammeter, if desired) to the VDD and GND terminals generators modulation and set the scopes coupling on the EV kit. Do not turn on the supply. to AC. The scope now displays a lowpass-filtered 2) Connect the RF signal generator to the RF IN SMA square wave at TP3 (filtered analog baseband data). connector. Do not turn on the generator output. Set Use the RF generators LF OUTPUT (modulation out- the generator for an output frequency of 315MHz (or put) to trigger the oscilloscope. 433.92MHz) at a power level of -100dBm. Set the 7) Monitor the DATA OUT terminal and verify the pres- modulation of the generator to provide a 2kHz 100% ence of a 2kHz square wave. 2 Evaluates: MAX1473