_______________general description the max2611 is a low-voltage, low-noise amplifier for use from dc to microwave frequencies. operating from a single +5v supply, it has a 3db bandwidth of 1100mhz. the max2611? low noise figure and high drive capability make it ideal for a variety of transmit, receive, and buffer applications. in a typical application, the only external components needed are input and output blocking capacitors and a v cc series resistor. to improve gain and output power, an rf choke can be added in series to the bias resistor. the max2611 comes in a 4-pin sot143 package, requiring minimal board space. ________________________applications satellite receivers tv tuners wireless local loops ism radios global positioning systems wireless local-area networks land mobile radios set-top boxes ____________________________features ? single +5v supply operation ? 3db bandwidth: dc to 1100mhz ? high gain: 18db at 500mhz ? low noise figure: 3.5db at 500mhz ? high drive capability: +3dbm at 16ma i d ? ultra-small sot143 package max2611 dc-to-microwave, low-noise amplifier ________________________________________________________________ maxim integrated products 1 out gnd gnd 1 4 23 in sot143 top view max2611 __________________pin configuration v cc c byp (optional) r bias c block out l choke (optional) out gnd gnd in c block in max2611 __________typical operating circuit 19-1094; rev 2; 4/05 part MAX2611EUS-T -40? to +85? temp range pin-package 4 sot143-4 evaluation kit available ________________or dering information 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.
max2611 dc-to-microwave, low-noise amplifier 2 _______________________________________________________________________________________ absolute maximum ratings electrical characteristics (i d = 16ma, z 0 = 50 ? , f in = 500mhz, t a = +25?, unless otherwise noted.) stresses beyond those listed under ?bsolute maximum ratings?may cause permanent damage to the device. these are stress rating s only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specificatio ns is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. note 1: parts are designed to operate over specified temperature range. specifications are production tested and guaranteed at +25?. note 2: guaranteed by design, not tested. i d .........................................................................................40ma input power ....................................................................+13dbm continuous power dissipation (t a = +70?) sot143-4 (derate 4mw/? above +70?)..................320mw operating temperature range ...........................-40? to +85? junction temperature ......................................................+150? storage temperature range .............................-65? to +150? lead temperature (soldering, 10s) .................................+300? f in = 100mhz to 500mhz f in = 100mhz (note 1) f in = 100mhz to 1500mhz f in = 100mhz to 1500mhz conditions mv/? -6.1 device voltage temperature coefficient db ?.3 gain flatness db 19.0 ? -40 85 operating temperature range power gain ps 210 group delay dbm 13 output ip3 db 3.5 noise figure mhz 1100 3db bandwidth 1.9:1 input voltage standing-wave maximum ratio 1.6:1 output voltage standing-wave maximum ratio dbm 2.9 output 1db compression point units min typ max parameter f in = 500mhz 17.3 18.3 t a = t min to t max (note 2) 3.25 3.8 4.26 device voltage v 3.5 3.8 4.0 caution! esd sensitive device
max2611 dc-to-microwave, low-noise amplifier _______________________________________________________________________________________ 3 25 0 0.05 0.10 0.30 0.50 1.00 gain vs. frequency 5 10 20 max2611-01 frequency (ghz) gain (db) 3.00 6.00 15 t a = -40? t a = +85? 5:1 1:1 0.05 0.10 0.30 0.50 1.00 voltage standing-wave ratio vs. frequency 2:1 3:1 4:1 max2611-02 frequency (ghz) vswr 3.00 6.00 in out 5 0 0.1 0.2 0.3 0.4 0.5 output 1db compression point vs. frequency 1 2 4 max2611-03 frequency (ghz) p -1 (dbm) 1.0 2.0 3 t a = -40? t a = +85? t a = +25? 7 2 0.1 0.2 0.3 0.4 0.5 noise figure vs. frequency 3 4 6 max2611-04 frequency (ghz) noise figure (db) 1.0 2.0 5 t a = -40? t a = +25? t a = +85? 25 0 10 15 20 25 gain vs. current 5 10 20 max2611-05 i d (ma) gain (db) 30 35 15 0.16ghz 0.5ghz 2.0ghz 1.0ghz __________________________________________typical operating characteristics (i d = 16ma, z 0 = 50 ? , f in = 500mhz, t a = +25?, unless otherwise noted.)
max2611 dc-to-microwave, low-noise amplifier 4 _______________________________________________________________________________________ ______________________________________________________________pin description name function 1 out amplifier output. use a series blocking capacitor with less than 3 ? reactance at your lowest operat- ing frequency. bias with an external resistor and an optional rf choke. 2, 4 gnd ground connection. for optimum performance, provide a low-inductance connection to the ground plane. pin 3 in amplifier input. use a series blocking capacitor with less than 3 ? reactance at your lowest operating frequency. table 1. typical scattering parameters (i d = 16ma, z 0 = 50 ? , t a = +25?) 3.0 0.3 0.2 0.1 2.5 2.0 1.5 1.0 0.4 0.5 0.6 0.8 frequency (ghz) 0.20 0.32 0.31 0.32 0.12 0.13 0.15 0.15 0.14 0.13 0.11 0.12 s11 (mag) -70 -76 -72 -60 16 50 77 -89 -78 -58 -44 -11 s11 (ang) 5.9 7.9 10.3 14.1 16.6 17.4 18.1 18.3 18.5 18.6 18.8 19.0 s21 (db) 1.98 2.48 3.27 5.07 6.79 7.45 7.99 8.26 8.43 8.53 8.73 8.90 s21 (mag) 32 47 59 79 109 123 137 144 151 158 166 173 s21 (ang) -22.3 -22.6 -22.2 -21.8 -20.9 -21.6 -21.6 -21.6 -21.6 -21.6 -21.9 -22.6 s12 (db) 0.077 0.074 0.078 0.081 0.090 0.083 0.083 0.083 0.083 0.083 0.081 0.074 s12 (mag) 37 25 18 11 10 10 9 7 6 5 4 2 s12 (ang) 0.24 0.26 0.22 0.21 0.10 0.10 0.09 0.08 0.06 0.04 0.03 0.05 s22 (mag) -29 -53 -72 -86 35 23 26 34 32 45 12 53 s22 (ang) 3.10 2.44 1.87 1.29 1.11 1.10 1.07 1.06 1.06 1.05 1.06 1.08 k 3.5 0.24 -64 3.0 1.41 13 -21.4 0.086 30 0.19 47 3.83 4.0 0.31 -68 -0.7 0.92 17 -23.0 0.070 35 0.24 82 6.66
max2611 dc-to-microwave, low-noise amplifier _______________________________________________________________________________________ 5 _______________detailed description the max2611 is a broadband amplifier with flat gain and 50 ? input and output ports. its small size and sim- ple bias circuitry make it ideal for applications where board space is limited. __________applications information external components as shown in the typical operating circuit , the max2611 is easy to use. input and output series capacitors may be necessary to block dc bias volt- ages (generated by the max2611) from interacting with adjacent circuitry. these capacitors must be large enough to contribute negligible reactance in a 50 ? system at the minimum operating frequency. use the following equation to calculate their minimum value: where f (in mhz) is the minimum operating frequency. bias current is supplied to the max2611 through an external resistor and optional rf choke connected between v cc and the out pin. a bypass capacitor from v cc to gnd may be necessary to isolate the v cc line from other circuitry. the resistor value determines the bias current from the following equation: where v d is the device voltage, nominally 3.8v. an optional rf choke can be added to improve the max2611? gain and output power. the choke should be large enough to reduce the loading effect that the bias resistor has on the amplifier output. this is a func- tion of r bias , frequency of operation, and output impedance. grounding proper grounding of the gnd pins is essential. if the pc board uses a topside rf ground, the gnd pins should be connected directly to it. for a board where the ground plane is not on the component side, the best technique is to connect the gnd pins to it through multiple plated through-holes. pc board layout example an example pc board layout is given in figure 1. it uses fr-4 with 31mil layer thickness between the rf lines and the ground plane. this board satisfies all the above requirements. i d = v cc - v d r bias c block = 53,000 f (pf) figure 1. example pc board layout expanded view
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. 6 ___________________maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 (408) 737-7600 2005 maxim integrated products printed usa is a registered trademark of maxim integrated products, inc. max2611 dc-to-microwave, low-noise amplifier sot-143 4l.eps e 1 1 21-0052 package outline, sot-143, 4l 4.0 0.1 0.30 0.05 0.8 0.05 0.30r max. b o k o 2.2 0.1 0.5 radius typical a0 4.0 0.1 2.0 0.05 1.5 +0.1/-0.0 diameter 1.75 0.1 1.0 0.1 a 8.0 0.3 3.5 0.05 1.0 minimum a df = max2611 ao = 3.1mm 0.1 bo = 2.7mm 0.1 ko = 1.2mm 0.1 x x x x lot specific code marking information note: dimensions are in mm. and follow eia481-1 standard. ics may also be marked with full part name: 2611 ? ? __________________________________________________tape-and-reel information package information (the package drawing(s) in this data sheet may not reflect the most current specifications. for the latest package outline info rmation, go to www.maxim-ic.com/packages .)
e nglish ? ???? ? ??? ? ??? what's ne w p roducts solutions de sign ap p note s sup p ort buy comp any me mbe rs max2611 part number table notes: see the max2611 quickview data sheet for further information on this product family or download the max2611 full data sheet (pdf, 160kb). 1. other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales . 2. didn't find what you need? ask our applications engineers. expert assistance in finding parts, usually within one business day. 3. part number suffixes: t or t&r = tape and reel; + = rohs/lead-free; # = rohs/lead-exempt. more: see full data sheet or part naming c onventions . 4. * some packages have variations, listed on the drawing. "pkgc ode/variation" tells which variation the product uses. 5. part number free sample buy direct package: type pins size drawing code/var * temp rohs/lead-free? materials analysis max2611pc b rohs/lead-free: no max2611eus+ sot-143;4 pin; dwg: 21-0052f (pdf) use pkgcode/variation: u4+2 * -40c to +85c rohs/lead-free: yes materials analysis max2611eus sot-143;4 pin; dwg: 21-0052f (pdf) use pkgcode/variation: u4-2 * -40c to +85c rohs/lead-free: no materials analysis MAX2611EUS-T sot-143;4 pin; dwg: 21-0052f (pdf) use pkgcode/variation: u4-2 * -40c to +85c rohs/lead-free: no materials analysis max2611eus+t sot-143;4 pin; dwg: 21-0052f (pdf) use pkgcode/variation: u4+2 * -40c to +85c rohs/lead-free: yes materials analysis didn't find what you need? c ontac t us: send us an email c opyright 2 0 0 7 by m axim i ntegrated p roduc ts , dallas semic onduc tor ? legal n otic es ? p rivac y p olic y
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