general description the max2140 evaluation kit (ev kit) simplifies evalua- tion of the max2140 complete sdars receiver ic. it enables testing of the device? rf performance and requires no additional support circuitry. the ev kit? sig- nal inputs and outputs use sma connectors to facilitate the connection of rf test equipment. features ? easy evaluation of the max2140 ? +3.1v to +3.6v single-supply operation ? jumpers for digital power control and shutdown ? all critical peripheral components included ? pc control software included evaluates: max2140 max2140 evaluation kit ________________________________________________________________ maxim integrated products 1 designation qty description c1, c2, c7, c27 4 open c3, c4 2 6.8pf 0.25pf 0402 capacitors murata grp1555c1h6r8c c5, c6 2 47pf 5% 0603 capacitors murata grm1885c1h470j c8, c10 2 10? tantalum capacitors avx tajr106k006 c9, c11, c12, c14?18, c32, c40, c41, c53, c76, c83, c84 15 0.1? 10% 0603 capacitors murata grm188r71c104k c13, c19 2 open c20, c23, c26, c31, c52 5 100pf 5% 0603 capacitors murata grm1885c1h101j c21, c22, c42 3 open c24 1 1000pf 10% 0603 capacitor taiyo yuden umk107b102kz-b c25, c33, c34, c35, c37, c38, c43, c45, c46, c48, c49, c51 12 0.01? 10% 0603 capacitors taiyo yuden umk107b103kz-b c28, c29 2 3.9pf 0.25pf 0603 capacitors murata grm1885c1h3r9c c30 1 0.22? 10% 0603 capacitor murata component list ordering information 19-3136; rev 0; 1/04 for pricing, delivery, and ordering information, please contact maxim/dallas direct! at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. part temp range ic package MAX2140EVKIT -40?c to +85?c 44 thin qfn-ep* supplier phone fax alpha 360-647-2360 360-671-4936 atc 949-583-9119 949-583-9213 coilcraft 847-639-6400 847-639-1469 kayama 219-489-1533 219-489-2261 murata 770-436-1300 770-436-3030 rf monolithics 800-737-6937 972-387-8148 component suppliers * ep = exposed paddle. designation qty description c47, c50 2 2.2? 10% 0603 capacitors murata c56, c57 2 3.9pf 0.25pf 0603 capacitors murata grm1885c1h6r8d c59 1 100pf 5% 0603 capacitor murata grm1885c1h101j c60, c61 2 47pf 5% 0402 capacitors murata grp1555c1h470j c62 1 22pf 1pf 0603 capacitor murata c63, c69, c79, c81, c82 5 330pf 5% 0603 capacitors murata grm1885c1h331j c73 1 0.01? 10% 0805 capacitor taiyo yuden umk212b103kq-b c75 1 1.0? 20% 1206 capacitor murata grm31mr71c105ma01l j1 1 db25 m pc board conn hd-20 series 747238-4 l1 1 open l4, l7, l9, l10 4 56nh 5% 0603 inductors murata lqw18an56nj00d l5, l6 2 68nh 5% 0603 inductors murata lqg18hn68nj00 l8 1 33nh 5% 0603 inductor murata lqw18an33nj00d
evaluates: max2140 quick start the max2140 ev kit is fully assembled and factory test- ed. follow the instructions in the connections and setup section for proper device evaluation. test equipment required this section lists the recommended test equipment to verify operation of the max2140. it is intended as a guide only, and some substitutions are possible: one rf signal generator capable of delivering at least +5dbm of output power at the operating fre- quency (hpe4433b, or equivalent) one rf power sensor capable of handling at least +20dbm of output power at the operating frequency (hp 8482a, or equivalent) one rf power meter capable of measuring up to +20dbm of output power at the operating frequency (hp 437b, or equivalent) an rf spectrum analyzer that covers the max2140 operating frequency range, as well as a few harmon- ics (fseb20, for example) ? power supply capable of up to 1a at +2.7v to +6.0v one ammeter for measuring the supply current (optional) ?0 ? sma cables ? network analyzer (hp 8753d, for example) to mea- sure small-signal return loss and gain (optional) max2140 evaluation kit 2 _______________________________________________________________________________________ designation qty description l11 1 22nh 5% inductor 0603cs-22nxjbc l12 1 33nh, 25 0402 inductor murata lqp15mn33ng00 l13 1 open r1 1 0 ? 0603 resistor r4, r12, r15, r20 4 51.1 ? 0603 resistors r8, r9 2 open r25, r26, r32, r33, r39 5 100 ? 0603 resistors r30, r31, r40, r41 4 5.1k ? 0603 resistors +5v, -5v, gnd 3 2-pin headers digi-key 1 x 2 header s1012-36-nd adr1, adr2, ju1, vcc 4 jumper blocks using 3-pin sip headers digi-key 1 x 3 header s1012-36-nd i, q 2 50 ? bnc pc board receptacles (jacks) amphenol 31-5239-52rfx jrfin, pwm, refin, ref_test, sawin, sawout 6 sma end launch jack receptacles 0.062in johnson 142-0701-801 component list (continued) designation qty description lock, rfagc, vinant, voutant 4 jumper blocks, 2-pin two 0.1in spacing 1 x 2 headers digi-key s1012-36-nd tcl, tda, tgnd 3 jumper blocks, 2-pin 0.1in spacing digi-key 5000k-nd u1 1 maxim max2140eth u2, u3 2 differential to single-ended line receivers max4444ese u4 1 259.861mhz saw filter rf monolithics, inc. sf2025b u5 1 low-dropout linear regulator max8877euk28 u6 1 buffer/line driver texas instruments sn74lvth244adbr u7 1 2338.755mhz multilayer chip bandpass filter toko ltf3216bu-f2r3b u8 1 closed-loop buffer max4178euk-t y2 1 23.92mhz crystal epson q24fa23h0000701
connections and setup this section provides a step-by-step guide to operating the ev kit and testing the device? function. do not turn on the dc power or rf signal generators until all connections are complete: 1) connect two dc supplies set to ?v (through an ammeter if desired) to the +5v, -5v, and gnd ter- minals on the ev kit. do not turn on the supply. 2) connect a dc supply set to 0v to the pwm termi- nals on the ev kit. do not turn on the supply. 3) connect one rf signal generator to the jrfin sma connector; do not turn on the generator? output. set the power level to -91dbm. 4) connect the i/q output on the ev kit to a spectrum analyzer through an sma cable. 5) connect the ev board to the pc through a parallel cable. 6) run the control software on an ibm-compatible pc. 7) turn on the dc supply. the supply current should read approximately 150ma. 8) activate the rf generator? output. 9) check the i/q outputs. layout issues a good pc board is an essential part of an rf circuit design. the ev kit pc board can serve as a guide for laying out a board using the max2140. keep traces carrying rf signals as short as possible to minimize radiation and insertion loss. use impedance control on all rf signal traces. the vcc node on the pc board should have decoupling capacitors to the closest ground. refer to the layout section of the max2140 data sheet for more information. evaluates: max2140 max2140 evaluation kit _______________________________________________________________________________________ 3
evaluates: max2140 max2140 evaluation kit 4 _______________________________________________________________________________________ figure 1. max2140 ev kit schematic (sheet 1 of 2)
evaluates: max2140 max2140 evaluation kit _______________________________________________________________________________________ 5 figure 1. max2140 ev kit schematic (sheet 2 of 2)
figure 2. max2140 ev kit component placement guide component side 1.0" evaluates: max2140 max2140 evaluation kit 6 _______________________________________________________________________________________ figure 3. max2140 ev kit component placement guide secondary side 1.0"
evaluates: max2140 max2140 evaluation kit _______________________________________________________________________________________ 7 figure 4. max2140 ev kit pc board layout?ayer 2 figure 5. max2140 ev kit pc board layout?ayer 3 1.0" 1.0"
evaluates: max2140 max2140 evaluation kit maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circu it patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. 8 _____________________maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 2004 maxim integrated products printed usa is a registered trademark of maxim integrated products. figure 6. max2140 ev kit pc board layout?omponent side figure 7. max2140 ev kit pc board layout?econdary side 1.0" 1.0"
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