general description the max2204 evaluation kit (ev kit) simplifies evalua- tion of the max2204 rf power detector. the ev kit enables testing of all functions with no additional sup- port circuitry. the rf power-detector input uses a 50 ? sma connector on the evaluation board for convenient connection to test equipment. features +2.7v to +3.3v single-supply operation 50 ? sma rf input port connector fully assembled and tested evaluates: max2204 max2204 evaluation kit ________________________________________________________________ maxim integrated products 1 component suppliers ordering information 19-0779; rev 0; 3/07 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. + denotes a lead-free and rohs-compliant ev kit. quick start test equipment required this section lists the r ecommended test equipment to verify operation of the max2204. 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 frequency (hpe4433b or equivalent) one rf power sensor capable of handling at least +10dbm of output power at the operating f requen- cy (hp 8482a or equivalent) one rf power meter capable of measuring up to +10dbm of output power at the operating frequen- cy (hp 437b or equivalent) an rf spectrum analyzer that covers the max2204 operating frequency range (e.g., fseb20) a power supply capable of up to 10ma at +2.7v to +3.3v a digital multimeter (dmm) for measuring output voltage, supply current, and output current ?0 ? sma cables a network analyzer (e.g., hp 8753d) to measure input impedance (optional) part temp range ic package MAX2204EVKIT+ -40? to +85? 5 sc70 component list designation qty description c1 1 220pf ?0% capacitor (0402) murata grm155r71h221k c2 1 27pf ?% capacitor (0402) murata grm155r71h270j c3 1 22? ?0% capacitor (1206) murata grm31cr60j226k c4 1 2200pf ?0% capacitor (0402) murata grm155r71h222k j1, j2 2 inline headers sullins pec36saan j4 1 sma end-launch jack receptacle, 0.062in johnson 142-0701-801 jp1 1 2-pin jumper block, single digi-key s1012-36-nd jp3 1 test point, pc mini, red keystone 5000 r1 1 50 ? ?% resistor (0402) r2 1 0 ? ?% resistor (0402) u1 1 max2204exk+ rf power detector 1 pcb: max2204 evaluation kit+ note: indicate that you are using the max2204 when contacting these component suppliers. supplier phone website johnson components 507-833-8822 www.johnsoncomponents.com murata mfg. co., ltd. 770-436-1300 www.murata.com
evaluates: max2204 connections and setup this section provides a step-by-step guide to operating the ev kit and testing the device? function. caution: do not turn on the dc power or rf signal genera- tors until all connections are made: 1) set the jumper (jp1) on the ev kit to on. this enables the device. 2) connect a dc supply set to +2.85v (through a dmm, if desired) to the vcc and gnd terminals on the ev kit. if available, set the current limit to 10ma. do not turn on the supply. 3) connect the output (j3) to a dmm to measure output voltage. 4) set the signal generator output to +5dbm, f = 836mhz. using the power meter, determine the actual output power of the signal generator. 5) connect the signal generator to the sma connector. do not turn on the signal generator. 6) turn on the dc supply; the supply current should read approximately 1.3ma. 7) activate the signal generator. the output voltage should read approximately 2v. layout issues the max2204 is not particularly sensitive to the layout, since it only needs 5dbm for maximum output voltage. however, there are two areas that need attention: the gnd pin and the supply bypassing. connect the gnd pin to pcb ground with a gnd via as close as possible, and place the supply bypassing capacitor close to the part. max2204 evaluation kit 2 _______________________________________________________________________________________ figure 1. max2204 ev kit schematic u1 max2204 c4 2200pf c2 27pf c1 220pf r2 0 ? vcc vcc 3 2 jp1 1 1 2 3 4 5 j4 out jp3 v cc gnd rfin ena out vcc c3 22 f j1 j2 r1 50 ?
evaluates: max2204 max2204 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. maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 _____________________ 3 2007 maxim integrated products is a registered trademark of maxim integrated products, inc. janet freed figure 2. max2204 ev kit component placement guide?op silkscreen 1.0" figure 3. max2204 ev kit component placement guide component side 1.0" figure 4. max2204 ev kit component placement guide secondary/bottom component side 1.0"
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