????????????????????????????????????????????????????????????????? maxim integrated products 1 typical operating circuit 19-6258; rev 0; 3/12 ordering information appears at end of data sheet. general description the MAX2686L /max2693l low-noise amplifiers (lnas) are designed for gps l1, galileo, and glonass applica - tions. designed in maxims advanced sige process, the devices achieve high gain and low noise figure while maxi - mizing the input-referred 1db compression point and the 3rd-order intercept point. both devices include an internal ldo ideal for battery-powered applications. for current- sensitive applications, the max2693l achieves excellent performance while consuming only 1.8ma current. the devices operate from a +1.6v to +4.2v single supply. the optional shutdown feature in the devices reduces the supply current to less than 20 f a. the devices are avail - able in a very small, lead-free, rohs-compliant, 0.86mm x 0.86mm x 0.65mm wafer-level package (wlp). applications automotive navigation telematics (asset tracking and management) cellular phones with gps notebook pcs/ultra-mobile pcs recreational, marine navigation watches digital cameras features s high power gain: 19db (MAX2686L) s low noise figure: 0.88db (MAX2686L) s integrated 50 output matching circuit s low supply current: 1.8ma (max2693l) s wide supply voltage range: 1.6v to 4.2v s low bill of materials: one inductor, two capacitors s small footprint: 0.86mm x 0.86mm s 0.4mm pitch wlp MAX2686L max2693l a1 a2 b1 b2 optional shutdown gnd shdn r1 25ki rf output rfout ldo v cc v cc c2 rf input c1 l1 rfin MAX2686L l1 = 7.3nh c1 = 100nf c2 = 10pf l1 = 12nh c1 = 100nf c2 = 10pf max2693l MAX2686L /max2693l gps /gnss low-noise amplifiers with integrated ldo evaluation kit available 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 MAX2686L /max2693l gps /gnss low-noise amplifiers with integrated ldo v cc to gnd .......................................................... -0.3v to +4.2v other pins to gnd ............... -0.3v to (+ operating v cc + 0.3v) maximum rf input power ............................................... +5dbm continuous power dissipation (t a = +70c) wlp (derates 9.7mw/c above +70c) ...................... 776mw maximum current into rf input ......................................... 10ma operating temperature range .......................... -40c to +85c junction temperature ..................................................... +150c storage temperature range ............................ -65c to +160c soldering temperature (reflow) (note 1) ........................ +260c absolute maximum ratings note 1: refer to application note 1891: wafer-level packaging (wlp) and its applications . stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. these are stress ratings only, and functional opera - tion of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. dc electrical characteristics (MAX2686L /max2693l ev kit, v cc = 1.6v to 4.2v, t a = -40c to +85c, no rf signals are applied. typical values are at v cc = 3.3v and t a = +25c, unless otherwise noted.) (note 2) ac electrical characteristics (MAX2686L /max2693l ev kit, v cc = 1.6v to 4.2v, t a = -40c to +85c, f rfin = 1575.42mhz. typical values are at v cc = 3.3v and t a = +25c, unless otherwise noted.) (note 2) caution! esd sensitive device parameter conditions min typ max units rf frequency l1 band 1575.42 mhz power gain v cc = 4.2v (note 4) MAX2686L 14.65 19.0 db max2693l 11.6 18.4 v cc = 1.6v MAX2686L 14.85 19.1 max2693l 11.6 18.7 noise figure v cc = 1.6v to 4.2v MAX2686L 0.88 db max2693l 1.05 in-band 3rd-order input intercept point (note 5) MAX2686L -4.1 dbm max2693l -14.3 out-of-band 3rd-order input intercept point (note 6) MAX2686L -0.1 dbm max2693l -13.9 input 1db compression point (note 7) MAX2686L -12.1 dbm max2693l -11.0 input return loss MAX2686L 11.2 db max2693l 10.7 parameter conditions min typ max units supply voltage 1.6 3.3 4.2 v supply current shdn = high MAX2686L 5 ma max2693l 1.8 shutdown mode, v shdn = 0v 20 a digital input logic-high (note 3) 1.2 v digital input logic-low (note 3) 0.45 v
????????????????????????????????????????????????????????????????? maxim integrated products 3 MAX2686L /max2693l gps /gnss low-noise amplifiers with integrated ldo note 2: min and max limits guaranteed by test at t a = +25c and guaranteed by design and characterization at t a = -40c and t a = +85c, unless otherwise noted. note 3: min and max limits guaranteed by test at t a = +25c. note 4: min limit guaranteed by design and characterization. note 5: measured with the two tones located at 1mhz and 2mhz offset from the center of the gps band with -30dbm/tone. note 6: measured with input tones at 1713mhz (-27dbm) and 1851mhz (-39dbm). note 7: measured with a tone located at the center of the gps band. MAX2686L ac electrical characteristics (continued) (MAX2686L /max2693l ev kit, v cc = 1.6v to 4.2v, t a = -40c to +85c, f rfin = 1575.42mhz. typical values are at v cc = 3.3v and t a = +25c, unless otherwise noted.) (note 2) typical operating characteristics (MAX2686L / max2693l ev kit. typical values are at v cc = 3.3v, t a = +25c, and f rfin = 1575.42mhz, unless otherwise noted.) parameter conditions min typ max units output return loss MAX2686L 22.0 db max2693l 14.3 reverse isolation MAX2686L 41.0 db max2693l 40.0 MAX2686L input return loss vs. frequency MAX2686L toc01 frequency (mhz) s11 (db) 2000 1500 1000 -20 -10 0 -30 500 2500 v cc = 3.2v +25c v cc = 4.2v v cc = 1.6v MAX2686L gain vs. frequency MAX2686L toc02 frequency (mhz) gain (db) 2000 1500 1000 5 10 15 20 0 500 2500 v cc = 4.2v v cc = 1.6v v cc = 3.2v +25c MAX2686L reverse isolation vs. frequency MAX2686L toc03 frequency (mhz) | s12 | (db) 2000 1500 1000 -60 -50 -40 -30 -70 500 2500 1.6v 3.2v 4.2v
????????????????????????????????????????????????????????????????? maxim integrated products 4 MAX2686L typical operating characteristics (continued) (MAX2686L / max2693l ev kit. typical values are at v cc = 2.85v, t a = +25c, and f rfin = 1575.42mhz, unless otherwise noted.) MAX2686L output return loss vs. frequency MAX2686L toc04 frequency (mhz) | s22 | (db) 2000 1500 1000 -20 -15 -10 -5 0 -25 500 2500 v cc = 1.6v v cc = 3.2v v cc = 4.2v +25c MAX2686L input p1db compression vs. supply voltage and temperature MAX2686L toc07 supply voltage (v) input p1db (dbm) 3.4 3.8 3.0 2.6 -13 -11 -9 -15 2.2 4.2 -40c +25c +85c MAX2686L noise figure vs. supply voltage and temperature MAX2686L toc08 supply voltage (v) noise figure (db) 4.0 3.6 3.2 2.8 2.4 2.0 0.8 1.2 1.6 0.4 1.6 -40c +25c +85c MAX2686L in-band iip3 vs. supply voltage and temperature (two tones located at 1mhz and 2mhz offset with -30dbm / tone) MAX2686L toc05 supply voltage (v) iip3 (dbm) 4.1 3.6 3.1 2.6 2.1 -5 -4 -3 -6 1.6 +85c -40c +25c MAX2686L out-of-band iip3 vs. supply voltage and temperature (tone 1 at 1713mhz, -27dbm; tone 2 at 1851mhz, -39dbm) MAX2686L toc06 supply voltage (v) iip3 (dbm) 4.0 3.6 3.2 2.8 2.4 2.0 -1 1 3 -3 1.6 -40c +25c +85c MAX2686L /max2693l gps /gnss low-noise amplifiers with integrated ldo
????????????????????????????????????????????????????????????????? maxim integrated products 5 max2693l typical operating characteristics (continued) (MAX2686L / max2693l ev kit. typical values are at v cc = 2.85v, t a = +25c, and f rfin = 1575.42mhz, unless otherwise noted.) max2693l input return loss vs. frequency MAX2686L toc09 frequency (mhz) s11 (db) 2000 1500 1000 -12 -8 -4 0 -16 500 2500 v cc = 4.2v v cc = 3.2v v cc = 1.6v +25c max2693l output return loss vs. frequency MAX2686L toc12 frequency (mhz) | s22 | (db) 2000 1500 1000 -12 -8 -4 0 -16 500 2500 v cc = 4.2v v cc = 1.6v v cc = 3.2v max2693l gain vs. frquency MAX2686L toc10 frequency (mhz) gain (db) 2000 1500 1000 0 10 20 -10 500 2500 v cc = 4.2v v cc = 3.2v v cc = 1.6v +25c max2693l reverse isolation vs. frequency MAX2686L toc11 frequency (mhz) | s12 | (db) 2000 1500 1000 -60 -50 -40 -30 -70 500 2500 1.6v 3.2v 4.2v +25c MAX2686L /max2693l gps /gnss low-noise amplifiers with integrated ldo
????????????????????????????????????????????????????????????????? maxim integrated products 6 typical operating characteristics (continued) (MAX2686L / max2693l ev kit. typical values are at v cc = 2.85v, t a = +25c, and f rfin = 1575.42mhz, unless otherwise noted.) max2693l input p1db compression vs. supply voltage and temperature MAX2686L toc15 supply voltage (v) input p1db (dbm) 4.0 3.6 3.2 2.8 2.4 2.0 -16 -14 -12 -10 -18 1.6 -40c +85c +25c max2693l noise figure vs. supply voltage and temperature MAX2686L toc16 supply voltage (v) noise figure (db) 4.0 3.6 3.2 2.8 2.4 2.0 0.8 1.2 1.6 0.4 1.6 -40c +25c +85c max2693l in-band iip3 vs. supply voltage and temperature (two tones located at 1mhz and 2mhz offset with -30dbm/ tone) MAX2686L toc13 supply voltage (v) iip3 (dbm) 4.1 3.6 3.1 2.6 2.1 -16 -15 -17 1.6 -40c +25c +85c max2693l out-of-band iip3 vs. supply voltage and temperature (tone 1 at 1713mhz, -27dbm; tone 2 at 1851mhz, -39dbm) MAX2686L toc14 supply voltage (v) iip3 (dbm) 4.0 3.6 3.2 2.8 2.4 2.0 -14 -13 -15 1.6 -40c +85c +25c max2693l MAX2686L /max2693l gps /gnss low-noise amplifiers with integrated ldo
????????????????????????????????????????????????????????????????? maxim integrated products 7 MAX2686L /max2693l gps /gnss low-noise amplifiers with integrated ldo bump description bump configuration detailed description the MAX2686L /max2693l are lnas designed for gps l1, galileo, and glonass applications. the devices fea - ture an optional power-shutdown control mode to elimi - nate the need for an external supply switch. the devices achieve high gain and low noise figure in an ultra-small package ideal for space-sensitive applications. these integrated ics eliminate the need for an external ldo. input and output matching the devices require an off-chip input matching. only an inductor in series with a dc-blocking capacitor is needed to form the input matching circuit. the typical operating circuit shows the recommended input-matching net - work. these values are optimized for the best simulta - neous gain, noise figure, and return loss performance. the value of the input coupling capacitor affects iip3. a smaller coupling capacitor results in lower iip3. the devices integrate an on-chip output matching to 50 i at the output, eliminating the need for external matching components. table 1 and table 2 list typical device s parameters and k f values. typical noise parameters are shown in table 3 and table 4 . shutdown the devices include an optional shutdown feature to turn off the entire chip. the devices are placed in active mode by default once v cc is applied, due to the on-chip pul - lup resistor to v cc at the rfout bump (shared with the shdn input). to shut down the part, apply a logic-low to the rfout bump through an external resistor with an adequate value, e.g., 25k i , in order not to load the rf output signal during active operation. bump name function a1 v cc supply voltage. bypass to ground with a 10pf capacitor as close as possible to the ic. a2 rfout ( shdn ) rf output/ shdn input. rfout is internally matched to 50 i and pulled up to v cc through a 1m i resistor. shdn is shared with the rfout bump. the devices are in active mode by default once v cc is applied. rfout( shdn ) can be pulled to a dc low through a 25k i resistor to shut down the ic. b1 rfin rf input. requires a dc-blocking capacitor and external matching components. b2 gnd ground. connect to the pcb ground plane. wlp top view MAX2686L max2693l rfin v cc gnd rfout (shdn) a1 a2 b1 b2 +
????????????????????????????????????????????????????????????????? maxim integrated products 8 MAX2686L /max2693l gps /gnss low-noise amplifiers with integrated ldo table 1. MAX2686L typical s parameter values and k-factor table 2. max2693l typical s parameter values and k-factor table 3. MAX2686L simulated typical noise parameters (v cc = 3.3v, t a = +25c) freq (mhz) s11 mag (db) s11 phase (degrees) s21 mag (db) s21 phase (degrees) s12 mag (db) s12 phase (degrees) s22 mag (db) s22 phase (degrees) k f 1000 -2.7 -88.3 7.9 162.0 -56.7 101.9 -1.9 -153.8 16.1 1100 -2.9 -95.0 9.6 150.5 -48.5 57.5 -2.4 -169.9 9.8 1200 -3.2 -101.7 11.2 136.9 -45.5 64.8 -3.1 172.8 7.4 1300 -3.4 -107.4 12.8 122.2 -49.2 51.0 -4.4 153.8 6.6 1400 -3.5 -113.3 14.4 104.8 -47.4 1.8 -6.8 132.5 6.9 1500 -3.3 -120.2 16.0 85.4 -50.7 19.3 -11.9 102.3 7.8 1575 -3.5 -125.7 16.8 66.9 -44.6 29.9 -26.0 46.7 5.9 1600 -3.7 -126.8 16.8 58.4 -43.4 15.5 -24.3 -79.5 5.1 1700 -3.6 -131.1 16.5 34.7 -49.8 -7.5 -10.1 -125.4 6.5 1800 -3.5 -139.0 16.1 12.9 -51.0 39.5 -5.4 -148.1 4.0 1900 -3.7 -146.3 15.2 -7.7 -41.9 7.5 -3.0 -169.7 2.2 2000 -4.0 -152.0 13.8 -24.4 -41.8 -10.7 -1.9 170.5 2.0 freq (mhz) s11 mag (db) s11 phase (degrees) s21 mag (db) s21 phase (degrees) s12 mag (db) s12 phase (degrees) s22 mag (db) s22 phase (degrees) k f 1000 -1.0 -77.4 -2.5 -148.6 -55.5 78.6 -0.9 -138.2 16.1 1100 -1.1 -84.8 0.1 -159.7 -51.0 85.5 -1.2 -154.2 9.8 1200 -1.2 -92.5 2.7 -172.2 -48.0 70.0 -1.6 -172.0 7.4 1300 -1.3 -99.4 5.6 171.7 -46.4 56.0 -2.3 167.2 6.6 1400 -1.5 -106.5 8.4 152.1 -45.9 35.6 -3.8 140.1 6.9 1500 -1.6 -113.2 11.0 124.7 -46.3 22.2 -8.0 96.8 7.8 1575 -1.6 -118.5 12.2 99.5 -44.0 38.3 -14.8 23.5 5.9 1600 -1.7 -120.6 12.3 88.4 -42.4 22.2 -14.9 -33.4 5.1 1700 -1.9 -126.6 11.5 55.8 -45.3 -9.5 -6.5 -117.5 6.5 1800 -1.8 -133.6 10.0 30.2 -43.6 12.4 -3.3 -152.3 4.0 1900 -2.0 -140.7 8.4 10.0 -40.1 -8.1 -2.0 -176.5 2.2 2000 -2.1 -146.9 6.9 -4.9 -39.6 -29.9 -1.5 164.9 2.0 frequency (mhz) fmin (db) | g opt | | g opt | angle r n ( i ) 1550 0.70 0.43 45 8.45 1560 0.70 0.43 45 8.43 1570 0.70 0.42 45 8.42 1580 0.70 0.42 45 8.41 1590 0.70 0.42 46 8.39 1600 0.71 0.42 46 8.38
????????????????????????????????????????????????????????????????? maxim integrated products 9 MAX2686L /max2693l gps /gnss low-noise amplifiers with integrated ldo applications information a properly designed pcb is essential to any rf micro - wave circuit. use controlled-impedance lines on all high-frequency inputs and outputs. bypass v cc with decoupling capacitors located close to the device. for long v cc lines, it may be necessary to add decoupling capacitors. locate these additional capacitors further away from the device package. proper grounding of the gnd bump is essential. if the pcb uses a topside rf ground, connect it directly to the gnd bump. for a board where the ground is not on the component layer, connect the gnd bump to the board with multiple vias close to the package. for general layout guidelines, refer to www.maxim-ic.com/app-notes/index.mvp/id/5100 . refer to www.maxim-ic.co m / datashee t / index.mv p /id/6934/t/do for the MAX2686L /max2693l ev kit schematic, gerber data, pads layout file, and bom information. table 4. max2693l simulated typical noise parameters (v cc = 3.3v, t a = +25 n c) ordering information chip information process: sige bicmos package information for the latest package outline information and land patterns (footprints), go to www.maxim-ic.com/packages . note that a +, #, or - in the package code indicates rohs status only. package drawings may show a different suffix character, but the drawing pertains to the package regardless of rohs status. + denotes a lead(pb)-free/rohs-compliant package. t = tape and reel frequency (mhz) fmin (db) | g opt | | g opt | angle r n ( i ) 1550 0.88 0.69 32 24.27 1560 0.88 0.69 32 24.22 1570 0.88 0.68 32 24.17 1580 0.88 0.68 32 24.12 1590 0.88 0.68 32 24.07 1600 0.88 0.68 33 24.03 package type package code outline no. land pattern no. 4 wlp w40a0+1 21-0480 refer to application note 1891 part temp range pin-package MAX2686L ews+t -40 n c to +85 n c 4 wlp max2693l ews+t -40 n c to +85 n c 4 wlp
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. the parametric values (min and max limits) shown in the electrical characteristics table are guaranteed. other parametric values quoted in this data sheet are provided for guidance. maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 10 ? 2012 maxim integrated products maxim is a registered trademark of maxim integrated products, inc. revision history revision number revision date description pages changed 0 3/12 initial release MAX2686L /max2693l gps /gnss low-noise amplifiers with integrated ldo
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