_________________________________________________________________ maxim integrated products 1 component list 19-4533; rev 1; 2/12 general description the max7036 evaluation kit (ev kit) provides a proven design to evaluate the max7036 ask receiver in a tqfn package with an exposed pad. the ev kit enables test - ing of the devices rf performance and requires no additional support circuitry. the rf input uses an sma connector for convenient connection to test equipment. the max7036 ev kit is available in two versions, 315mhz (MAX7036EVKIT315+) and 433.92mhz (MAX7036EVKIT433+). the passive components are optimized for these frequencies. the ev kit pcbs come with a max7036gtp/v+ installed on both ev kit versions. features s lead(pb)-free and rohs compliant s proven pcb layout s proven components list s available in 315mhz and 433.92mhz versions s fully assembled and tested ordering information + denotes lead(pb)-free and rohs compliant. part type MAX7036EVKIT-315+ ev kit MAX7036EVKIT-433+ ev kit designation qty description c1, c9, c13, c20 4 0.1 f f 10%, 16v x7r ceramic capacitors (0603) murata grm188r71c104k c2, c17 0 not installed, capacitors (0603) c3, c16 2 315mhz: 4.7pf 5%, 50v c0g ceramic capacitors (0603) murata grm1885c1h4r7c 433.92mhz: 10pf 5%, 50v c0g ceramic capacitors (0603) murata grm1885c1h100j c4 1 1 f f 10%, 6.3v x5r ceramic capacitor (0603) murata grm188r60j105k c5 1 180pf 10%, 50v c0g ceramic capacitor (0603) murata grm1885c1h181j c6 1 22pf 5%, 50v c0g ceramic capacitor (0603) murata grm1885c1h220j c7, c8, c11, c14, c15 5 100pf 5%, 50v c0g ceramic capacitors (0603) murata grm1885c1h101j c10, c12 2 0.01 f f 10%, 25v x7r ceramic capacitors (0603) murata grm188r71e103k c18 1 390pf 5%, 50v c0g ceramic capacitor (0603) murata grm1885c1h391j designation qty description c19 1 315mhz: 4.7pf 5%, 50v c0g ceramic capacitor (0603) murata grm1885c1h4r7c 433.92mhz: 2.7pf 0.1pf, 50v c0g ceramic capacitor (0603) murata grm1885c1h2r7b c21 1 10pf 5%, 50v c0g ceramic capacitor (0603) murata grm1885c1h100j c22 1 10 f f 20%, 6.3v x5r ceramic capacitor (0603) murata grm188r60j106m c23 1 220pf 10%, 50v x7r ceramic capacitor (0603) murata grm188r71h221k ju1, ju3 2 2-pin headers ju2, ju4 2 3-pin headers l1 1 315mhz: 100nh 2% inductor (0603) murata lqw18anr10g00 433.92mhz: 47nh 2% inductor (0603) murata lqw18an47ng00 l2 1 315mhz: 27nh 2% inductor (0603) murata lqw18an27ng00 433.92mhz: 15nh 2% inductor (0603) murata lqw18an15ng00 max7036 evaluation kit evaluates: max7036 for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxims website at www.maxim-ic.com.
_________________________________________________________________ maxim integrated products 2 quick start required equipment ? max7036 ev kit ? 3.3v, 20ma dc power supply ? rf generator capable of delivering -120dbm to 0dbm output power at the operating frequency, in addition to amplitude modulation (am) or pulse modulation (e.g., agilent e4420b or equivalent) ? oscilloscope ? optional ammeter for measuring supply current procedure the max7036 ev kit is fully assembled and tested. follow the steps below to verify board operation. caution: do not turn on the dc power supply or rf signal genera - tor until all connections are completed. 1) verify that the jumpers are in their default position, as shown in table 1. 2) connect a 3.3v dc power supply (through an amme - ter, if desired) to the vdd and gnd pads on the ev kit. do not turn on the supply. 3) connect the rf signal generator to the p2 sma con - nector. do not turn on the generator output. set the generator for an output carrier frequency of 315mhz (or 433.92mhz) at a power level of -100dbm. set the modulation of the generator to provide 100% am (or pulse modulation), with a 4khz square wave. 4) connect the oscilloscope to test point tp2 (dataout). 5) turn on the dc power supply. the supply current should be between 5ma and 6ma. 6) activate the rf generators output without modulation. set the rf generator to -100dbm. enable am square- wave (or pulse) modulation on the rf generator and set the scopes coupling to dc. the scope now dis - plays a 4khz square wave at tp2. additional evaluation 1) with the modulation still set to am (or pulse), observe the effect of reducing the rf generators amplitude at tp2 (dataout). the error rate in this sliced digital signal increases with reduced rf signal level. the sensitivity is usually defined as the point at which the error in interpreting the data increases beyond a set limit, as defined by a bit-error rate (ber) test. note: the sensitivity values shown in the max7036 ic data sheet assume that pulse modulation is being used. depending on the model of signal generator, use of 100% am might not produce identical results to pulse modulation. 2) connect the oscilloscope to test point tp1, set the scopes coupling to ac, and adjust the voltage sen - sitivity. the scope now displays a lowpass-filtered square wave (filtered analog baseband data). 3) set the scopes coupling to dc, adjust the voltage sensitivity, and turn off the modulation from the rf generator. the scope should display a dc voltage that varies from approximately 1.35v to 2.2v as the component list (continued) component suppliers * ep = exposed pad. note: indicate that you are using the max7036 when contacting these component suppliers. designation qty description p1 1 sma end-launch jack receptacle p2 1 sma female vertical-mount pcb connector r1 1 22k i 5% resistor (0603) r2 0 not installed, resistor (0603) tp1Ctp4 4 miniature red test points u1 1 ask receiver (20 tqfn-ep*) maxim max7036gtp/v+ designation qty description y1 1 315mhz: 9.8375mhz crystal (at-51cd2) ndk exs00a-at00733 433.92mhz: 13.55375mhz crystal (at-51cd2) ndk exs00a-at00732 3 shunts 1 pcb: max7036 evaluation kit+ supplier phone website murata electronics north america, inc. 770-436-1300 www.murata-northamerica.com ndk america (nihon dempa kogyo co., ltd.) 815-544-7900 www.ndk.com/en max7036 evaluation kit evaluates: max7036
_________________________________________________________________ maxim integrated products 3 rf generator amplitude is changed from -115dbm to 0dbm. note: at an input amplitude of approximately -60dbm, this dc voltage drops suddenly to about 1.76v and then rises again with increasing input amplitude. this is normal; the agc is turning on the lna gain-reduction resistor. 4) capacitors c5 and c18 are used to set the corner frequency of the 2nd-order lowpass sallen-key data filter. the current values were selected for bit rates up to 4kbps manchester. adjusting these values accom - modates different data rates (refer to the max7036 ic data sheet for more details). layout issues a properly designed pcb is essential for any rf/micro - wave circuit. keep high-frequency input and output lines as short as possible to minimize losses and radiation. at high frequencies, trace lengths that are on the order of /10 or longer can act as antennas. both parasitic inductance and capacitance are influ - ential on circuit layouts and are best avoided by using short trace lengths. generally, a 10-mil wide pcb trace, 0.0625in above a ground plane, with fr4 dielectric has about 19nh/in of inductance and about 1pf/in of capaci - tance. in the lna/mixer circuit, where the inductor is on the order of 20nh and a capacitor is on the order of 3pf, the proximity of the circuit to the max7036 has a strong influence on the effective component values. to reduce the parasitic inductance, use a solid ground or power plane below the signal traces. also, use low-induc - tance connections to ground on all gnd pins, and place decoupling capacitors close to all vdd connections. detailed description of hardware the max7036 ev kit provides a proven layout for the max7036. on-board test points are included to monitor various signals (table 2). power supply the max7036 can operate from 3.3v or 5v supplies. for 5v operation, remove the shunt from ju1 before connect - ing the supply to vdd. avdd and dvdd operate from an internal linear regulator when vdd = 5v. for 3.3v opera - tion, connect the shunt on ju1. if signal jumper ju3 with one side grounded is provided to monitor the if signal. a shunt cannot be used at ju3. external frequency input for applications where an external frequency is desired over the crystal frequency, it is possible to remove the crystal and apply an external frequency through p1. capacitor c2 is necessary (use a 0.01f capacitor). table 1. jumper table (ju1Cju4) * default position. table 2. test points jumper shunt position description ju1 open disconnects avdd and dvdd from vdd. apply up to 5v on the vdd pad. an internal regulator provides power to avdd and dvdd. closed* connects avdd and dvdd to vdd. when connected, do not exceed 3.3v on the vdd pad. ju2 1-2* connects enable to vdd (normal operation) 2-3 connects enable to gnd (shutdown) ju3 open* always keep open. provides a test point for the if signal. ju4 1-2 connects pdout to dsn node for faster data detection (if populated) 2-3* connects pdout to gnd through r2 and c17 (if populated) test point description tp1 noninverting op-amp input tp2 dataout output tp3 pdout output tp4 gnd max7036 evaluation kit evaluates: max7036
_________________________________________________________________ maxim integrated products 4 figure 1. MAX7036EVKIT315+ ev kit schematic max7036 evaluation kit evaluates: max7036
_________________________________________________________________ maxim integrated products 5 figure 2. MAX7036EVKIT433+ ev kit schematic max7036 evaluation kit evaluates: max7036
_________________________________________________________________ maxim integrated products 6 figure 3. max7036 ev kit component placement guide component side figure 4. max7036 ev kit pcb layoutcomponent side figure 5. max7036 ev kit pcb layoutsolder side max7036 evaluation kit evaluates: max7036
maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circuit 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 7 ? 2012 maxim integrated products maxim is a registered trademark of maxim integrated products, inc. revision history revision number revision date description pages changed 0 4/09 initial release 1 2/12 updated ic part number and the additional evaluation section 1, 2 max7036 evaluation kit evaluates: max7036
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