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general description the max2264/max2265/max2266 power amplifiers are designed for operation in is-98-based cdma, is-136- based tdma, and pdc cellular telephones operating in the 900mhz range. when matched for cdma operation and biased with margin over the adjacent and alternate channel specification (-45dbc/-56dbc), the amplifiers achieve 28dbm output power with 37% efficiency (max2265). at +16dbm output? very common power level for cdma phones?he max2265 still has 7% effi- ciency, yielding excellent overall talk time. at the same power level, the max2264/max2266 have an unprece- dented 12%/17% efficiency, while still obtaining 32%/32% efficiency at maximum output power. the max2264/max2265/max2266 have internally refer- enced bias ports that are normally terminated with sim- ple resistors. the bias ports allow customization of acpr margin and gain. they can also be used to ?hrottle back?bias current when generating low power levels. the max2264/max2265/max2266 have excel- lent gain stability over temperature (?.8db), so overdesign of driver stages and excess driver current are dramatically reduced, further increasing the phone? talk time. the devices can be operated from +2.7v to +5v while meeting all acpr specifications over the entire temperature range. nonlinear efficiency is 48% when matched for linear operation, or 55% when matched for non-linear-only operation (max2265). the devices are packaged in a 16-pin tssop with exposed pad (ep). for module or direct chip attach applications, the max2264 is also available in die form. applications cellular-band cdma dual-mode phones cellular-band pdc phones cellular-band tdma dual-mode phones dual-mode phones 2-way pagers power-amplifier modules features low average cdma current consumption in typical urban scenario 55ma (max2264) 90ma (max2265) 40ma (max2266) 0.5? shutdown mode eliminates external supply switch ?.8db gain variation over temperature no external reference or logic interface circuitry needed supply current and acpr margin dynamically adjustable +2.7v to +5v single-supply operation 37% efficiency at +2.7v operation part max2264/max2265/max2266 2.7v, single-supply, cellular-band linear power amplifiers ________________________________________________________________ maxim integrated products 1 top view max2264/max2266 in1 in0 bias2h v cc gnd nfp out0 bias1l out1 pwr v cc shdn bias1h v cc bias2l out1 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 bias tssop-ep 19-1524; rev 3; 2/01 evaluation kit manual follows data sheet pin configurations ordering information selector guide * contact factory for dice specifications. pin configurations continued at end of data sheet. power-added efficiency (%) cdma at +28dbm cdma at +16dbm tdma at +30dbm 42 7 12 32 37 max2265 max2264 device 16 tssop-ep dice* 16 tssop-ep pin- package temp. range -40? to +85? -40? to +85? -40? to +85? max2265 eue max2264e/d max2264 eue 16 tssop-ep -40? to +85? max2266 eue 17 32 max2266 tssop-ep 5mm x 6.4mm for price, delivery, and to place orders, please contact maxim distribution at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com.
max2264/max2265/max2266 2.7v, single-supply, cellular-band linear power amplifiers 2 _______________________________________________________________________________________ absolute maximum ratings dc electrical characteristics (v cc = +2.7v to +5v, t a = t min to t max , no input signal applied, v shdn = 2.0v. typical values are at v cc = +3.3v and t a = +25?, unless otherwise noted.) (note 8) 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. v cc to gnd (no rf input) ....................................-0.3v to +6.5v logic inputs to gnd...................................-0.3v to (v cc + 0.3v) bias_ _ to gnd ..........................................-0.3v to (v cc + 0.3v) rf input power .................................................+13dbm (20mw) logic input current...........................................................?0ma output vswr with +13dbm input ........................................2.5:1 total dc power dissipation (t paddle = +100?) 16-pin tssop-ep (derate 60mw/? above t paddle = +100?) ...............................................4w ja ...............................................................................8?/w operating temperature range ...........................-40? to +85? junction temperature ......................................................+150? storage temperature range .............................-65? to +150? lead temperature (soldering, 10sec) .............................+300? ac electrical characteristics?ax2264 (max2264 ev kit, v cc = v pwr = v shdn = +3.3v, t a = +25?, f in = 836mhz, cdma modulation, shdn = v cc , matching networks tuned for 824mhz to 849mhz operation, 50 ? system, unless otherwise noted.) pwr = gnd pwr = v cc parameter symbol min typ max units logic input current low -1 1 ? logic input current high -1 5 ? shutdown supply current i cc 0.5 10 ? 83 logic threshold high 2.0 v logic threshold low 0.8 v idle current operating voltage range v cc 2.7 5.0 v i cc 95 34 conditions logic = gnd logic = v cc shdn = pwr = gnd max2265 max2264/max2266 ma parameter symbol min typ max units output power (low-power mode) (note 1) p out 15 16.5 dbm 26 27 output power (high-power mode) (note 1) p out 27 28 dbm 18 21 14 15.5 power gain (note 1) frequency range (notes 1, 2) f in 824 849 mhz g p 23 24.5 db 22 conditions pwr = gnd, p in adjusted to meet acpr specification, f in = 824mhz to 849mhz pwr = v cc = 2.8v, p in adjusted to meet acpr specification, f in = 824mhz to 849mhz pwr = v cc , p in adjusted to meet acpr specification, f in = 824mhz to 849mhz pwr = gnd pwr = gnd, v cc = 2.8v, p in adjusted to meet acpr specification, f in = 824mhz to 849mhz pwr = v cc or gnd pwr = v cc t a = +25? t a = t min to t max gain variation vs. temperature (note 1) ?.8 db t a = t min to t max , relative to t a = +25?
max2264/max2265/max2266 2.7v, single-supply, cellular-band linear power amplifiers _______________________________________________________________________________________ 3 parameter symbol min typ max units amps output power (note 1) p out 30.5 31 dbm adjacent-channel power ratio limit (notes 1, 2) acpr -44 dbc alternate-channel power ratio limit (notes 1, 2) acpr -56 dbc amps power-added efficiency pae 44 % power-mode switching time 550 ns turn-on time (notes 1, 4) 15 ? maximum input vswr vswr nonharmonic spurious due to load mismatch (notes 1, 5) -60 dbc noise power (note 6) -139 -136 amps noise power (note 6) -138 dbm/hz harmonic suppression 32 dbc conditions p in = 8dbm p in = 8dbm (note 4) v cc = 2.8v to 5.0v, offset = 885khz, 30khz bw, f in = 824mhz to 849mhz v cc = 2.8v to 5.0v, offset = 1980khz, 30khz bw, f in = 824mhz to 849mhz pwr = v cc or gnd f in = 824mhz to 849mhz, pwr = gnd or v cc p in = 10dbm measured at 881mhz pwr = gnd, measured at 881mhz measured at 881mhz, p in = 8dbm (note 7) dbm/hz parameter symbol min typ max units 26 26.5 output power (note 1) p out 27 28 dbm gain variation vs. temperature (note 1) ?.7 db amps output power (note 1) p out 30 31 dbm adjacent-channel power ratio (notes 1, 2) acpr -44 -45 dbc alternate-channel power ratio (notes 1, 2) acpr -56 -57 dbc frequency range (notes 1, 2) f in 824 849 mhz 23 conditions v cc = 2.8v, p in adjusted to meet acpr specification, f in = 824mhz to 849mhz p in adjusted to meet acpr specification, f in = 824mhz to 849mhz t a = t min to t max , relative to t a = +25? p in = 8dbm v cc = 2.8v to 5.0v, offset = 885khz, 30khz bw, f in = 824mhz to 849mhz v cc = 2.8v to 5.0v, offset = 1980khz, 30khz bw, f in = 824mhz to 849mhz t a = t min to t max power gain (note 1) g p 24 25.5 db t a = +25? ac electrical characteristics?ax2264 (continued) (max2264 ev kit, v cc = v pwr = v shdn = +3.3v, t a = +25?, f in = 836mhz, cdma modulation, shdn = v cc , matching networks tuned for 824mhz to 849mhz operation, 50 ? system, unless otherwise noted.) 32 pwr = v cc , p in adjusted to meet acpr specification power-added efficiency (note 3) pae 12 % pwr = gnd, p in adjusted to meet acpr specification ac electrical characteristics?ax2265 (max2265 ev kit, v cc = v shdn = +3.3v, t a = +25?, f in = 836mhz, cdma modulation, matching networks tuned for 824mhz to 849mhz operation, 50 ? system, unless otherwise indicated.) 2.4:1
max2264/max2265/max2266 2.7v, single-supply, cellular-band linear power amplifiers 4 _______________________________________________________________________________________ ac electrical characteristics?ax2265 (continued) (max2265 ev kit, v cc = v shdn = +3.3v, t a = +25?, f in = 836mhz, cdma modulation, matching networks tuned for 824mhz to 849mhz operation, 50 ? system, unless otherwise indicated.) parameter symbol min typ max units power-added efficiency (note 3) pae 37 % 7 amps power-added efficiency pae 48 % turn-on time (notes 1, 4) 15 ? maximum input vswr vswr 1.3:1 nonharmonic spurious due to load mismatch (notes 1, 5) -60 dbc noise power (note 6) -140 dbm/hz amps noise power (note 6) -139 dbm/hz harmonic suppression 47 dbc conditions p in adjusted to give p out = 28dbm p in adjusted for p out = 16dbm p in = 8dbm f in = 824mhz to 849mhz p in = 10dbm measured at 881mhz measured at 881mhz, p in = 8dbm (note 7) ac electrical characteristics?ax2266 (max2266 ev kit, v cc = v shdn = +3.3v, t a = +25?, f in = 836mhz, cdma modulation, matching networks tuned for 824mhz to 849mhz operation, 50 ? system, unless otherwise indicated.) parameter symbol min typ max units output power (low-power mode) (note 1) p out 14 15.5 dbm 26 27 output power (high-power mode) (note 1) p out 27 28 dbm 25 27.5 13 14 power gain (note 1) frequency range (notes 1, 2) f in 824 849 mhz g p 24.5 26 db 23 conditions pwr = gnd, p in adjusted to meet acpr specification, f in = 824mhz to 849mhz pwr = v cc = 2.8v, p in adjusted to meet acpr specification, f in = 824mhz to 849mhz pwr = v cc , p in adjusted to meet acpr specification, f in = 824mhz to 849mhz pwr = gnd pwr = gnd, v cc = 2.8v, p in adjusted to meet acpr specification, f in = 824mhz to 849mhz pwr = v cc or gnd pwr = v cc gain variation vs. temperature (note 1) ?.8 db t a = t min to t max , relative to t a = +25? t a = +25? t a = t min to t max power-added efficiency (note 3) pae 32 % 17 pwr = v cc , p in adjusted to meet acpr specification pwr = gnd, p in adjusted to meet acpr specification amps output power (note 1) p out 31 32 dbm p in = 8dbm alternate-channel power ratio limit (notes 1, 2) acpr -56 dbc v cc = 2.8v to 5.0v, offset = 1980khz, 30khz bw, f in = 824mhz to 849mhz adjacent-channel power ratio limit (notes 1, 2) acpr -44 dbc v cc = 2.8v to 5.0v, offset = 885khz, 30khz bw, f in = 824mhz to 849mhz
max2264/max2265/max2266 2.7v, single-supply, cellular-band linear power amplifiers _______________________________________________________________________________________ 5 note 1: minimum and maximum values are guaranteed by design and characterization, not production tested. note 2: p max is met over this frequency range at the acpr limit with a single matching network. for optimum performance at other frequencies, the output matching network must be properly designed. see the applications information section. operation between 750mhz and 1000mhz is possible but has not been characterized. note 3: pae is specified into a 50 ? load, while meeting acpr requirements. note 4: time from logic transition until p out is within 1db of its final mean power. note 5: murata isolator as load with 20:1 vswr any phase angle after isolator. note 6: noise power can be improved by using the circuit in figures 1, 2, and 3. note 7: harmonics measured on evaluation kit, which provides some harmonic attenuation in addition to the rejection provided by the ic. the combined suppression is specified. note 8: +25? guaranteed by production test, +25? guaranteed through correlation to worst-case temperature testing. parameter symbol min typ max units amps power-added efficiency pae 48 % power-mode switching time 550 ns turn-on time (notes 1, 4) 15 ? maximum input vswr vswr 2.4:1 nonharmonic spurious due to load mismatch (notes 1, 5) -60 dbc noise power (note 6) -137 -130 amps noise power (note 6) -136 dbm/hz harmonic suppression 32 dbc conditions p in = 8dbm (note 4) pwr = v cc or gnd f in = 824mhz to 849mhz, pwr = gnd or v cc p in = 10dbm measured at 881mhz pwr = gnd, measured at 881mhz measured at 881mhz, p in = 8dbm (note 7) dbm/hz ac electrical characteristics?ax2266 (continued) (max2266 ev kit, v cc = v pwr = v shdn = +3.3v, t a = +25?, f in = 836mhz, cdma modulation, shdn = v cc , matching networks tuned for 824mhz to 849mhz operation, 50 ? system, unless otherwise noted.) typical operating characteristics (max2264/max2265/max2266 ev kits, v cc = +3.3v, shdn = v cc , cdma modulation, t a = +25?, unless otherwise noted.) 0 20 40 60 80 100 120 140 2.5 3.5 3.0 4.0 4.5 5.0 5.5 max2264 shutdown current vs. supply voltage max2264-01 supply voltage (v) supply current (na) t a = +85? t a = -40? t a = +25? pwr = gnd shdn = gnd no input drive 20 22 26 24 28 30 2.5 3.5 3.0 4.0 4.5 5.0 max2264 gain vs. supply voltage max2264-02 supply voltage (v) gain (db) pwr = v cc t a = -40 c t a = +85 c t a = +25 c 18 20 24 22 26 28 2.5 4.0 3.0 3.5 4.5 5.0 max2264 gain vs. supply voltage max2264-03 supply voltage (v) gain (db) pwr = gnd t a = -40 c t a = +85 c t a = +25 c
max2264/max2265/max2266 2.7v, single-supply, cellular-band linear power amplifiers 6 _______________________________________________________________________________________ pwr = v cc t a = +25 c t a = -40 c t a = +85 c 26 28 32 30 34 36 2.5 3.5 3.0 4.0 4.5 5.0 max2264 power-added efficiency vs. supply voltage max2264-04 supply voltage (v) pae (%) 8 9 11 10 13 12 14 2.5 4.0 3.0 3.5 4.5 5.0 max2264 power-added efficiency vs. supply voltage max2264-05 supply voltage (v) pae (%) t a = -40 c t a = +85 c t a = +25 c pwr = gnd 25 28 27 26 29 30 31 32 04 2 68 max2264 output power vs. input power max2264-06 input power (dbm) output power (dbm) pwr = v cc v cc = 3.3v t a = +25 c v cc = 2.7v t a = +25 c v cc = 3.3v t a = -40 c v cc = 2.7v t a = +85 c v cc = 2.7v t a = -40 c v cc = 3.3v t a = +85 c 4 8 12 16 20 -14 -8 -12 -10 -6 -4 -2 max2264 output power vs. input power max2264-07 input power (dbm) output power (dbm) t a = +25 c t a = +85 c t a = -40 c pwr = gnd 22 24 23 25 26 27 015 5 10 20 25 30 35 max2264 gain vs. output power max2264-08 output power (dbm) gain (db) pwr = v cc v cc = 2.7v t a = +85 c v cc = 2.7v t a = -40 c v cc = 3.3v t a = +85 c v cc = 3.3v t a = -40 c v cc = 2.7v t a = +25 c v cc = 3.3v t a = +25 c 20 21 23 22 24 25 -10 5 -5 0 10 15 20 max2264 gain vs. output power max2264-09 output power (dbm) gain (db) pwr = gnd t a = -40 c t a = +85 c t a = +25 c 0 200 400 600 800 015 5 10 20 25 30 35 max2264 supply current vs. output power max2264-10 output power (dbm) supply current (ma) v cc = 2.7v/3.3v at t a = -40 c/+25 c/+85 c pwr = v cc pwr = gnd 0 40 80 120 160 09 3 6 12 15 18 max2264 supply current vs. output power max2264-11 output power (dbm) supply current (ma) t a = +25 c t a = +85 c t a = -40 c -80 -70 -50 -60 -40 -30 -20 0 -10 10 20 30 max2264 adjacent-channel power ratio vs. output power max2264-12 output power (dbm) acpr (dbc) pwr = v cc t a = +25 c t a = +85 c t a = -40 c typical operating characteristics (continued) (max2264/max2265/max2266 ev kits, v cc = +3.3v, shdn = v cc , cdma modulation, t a = +25?, unless otherwise noted.)
max2264/max2265/max2266 2.7v, single-supply, cellular-band linear power amplifiers _______________________________________________________________________________________ 7 pwr = gnd t a = +85 c t a = -40 c t a = +25 c -65 -60 -50 -55 -45 -40 -10 5 -5 0 10 15 20 max2264 adjacent-channel power ratio vs. output power max2264-13 output power (dbm) acpr (dbc) 0 25 15 5 30 35 40 10 20 45 50 55 020 25 51015 30 35 max2264 power-added efficiency vs. output power output power (dbm) pae (%) max2264-14 v cc = 3.3v v cc = 2.7v pwr = v cc t a = t min to t max t a = +25 c t a = +85 c t a = -40 c 0 4 8 12 16 -10 5 -5 0 10 15 20 max2264 power-added efficiency vs. output power max2264-15 output power (dbm) pae (%) pwr = gnd 30 32 36 34 38 40 824 836 830 842 848 max2264 power-added efficiency vs. frequency max2264-16 frequency (mhz) pae (%) pwr = v cc p out = 28dbm 32.0% 32.7% 33.2% 33.1% 33.0% 0 10 5 15 824 836 830 842 848 max2264 power-added efficiency vs. frequency max2264-17 frequency (mhz) pae (%) 11% 12% 12% 11% 12% pwr = gnd p out = 16dbm typical operating characteristics (continued) (max2264/max2265/max2266 ev kits, v cc = +3.3v, shdn = v cc , cdma modulation, t a = +25?, unless otherwise noted.) 0 20 40 60 80 100 120 140 2.5 3.5 3.0 4.0 4.5 5.0 5.5 max2265 shutdown current vs. supply voltage max2265-18 supply voltage (v) supply current (na) t a = +85 c t a = -40 c t a = +25 c pwr = gnd shdn = gnd no input drive 20 22 26 24 28 30 2.5 3.5 3.0 4.0 4.5 5.0 max2265 gain vs. supply voltage max2265-19 supply voltage (v) gain (db) t a = -40 c t a = +85 c t a = +25 c 29 31 35 33 37 39 2.5 3.5 3.0 4.0 4.5 5.0 max2265 power-added efficiency vs. supply voltage max2265-20 supply voltage (v) pae (%) t a = +25 c t a = +85 c t a = -40 c 25 28 27 26 29 30 31 32 04 2 68 max2265 output power vs. input power max2265-21 input power (dbm) output power (dbm) v cc = 3.3v t a = +85 c v cc = 3.3v t a = +25 c v cc = 2.7v t a = +25 c v cc = 3.3v t a = -40 c v cc = 2.7v t a = +85 c v cc = 2.7v t a = -40 c
max2264/max2265/max2266 2.7v, single-supply, cellular-band linear power amplifiers 8 _______________________________________________________________________________________ 22 24 23 25 26 27 015 5 10 20 25 30 35 max2265 gain vs. output power max2265-22 output power (dbm) gain (db) v cc = 2.7v t a = +85 c v cc = 2.7v t a = -40 c v cc = 3.3v t a = +85 c v cc = 3.3v t a = -40 c v cc = 2.7v t a = +25 c v cc = 3.3v t a = +25 c 0 200 400 600 800 015 5 10 20 25 30 35 max2265 supply current vs. output power max2265-23 output power (dbm) supply current (ma) v cc = 2.7v/3.3v at t a = -40 c/+25 c/+85 c using optional tb circuit in figure 2 v cc = 3.3v -80 -70 -50 -60 -40 -30 -20 0 -10 10 20 30 max2265 adjacent-channel power ratio vs. output power max2265-24 output power (dbm) acpr (dbc) t a = +25 c t a = +85 c t a = -40 c 0 25 15 5 30 35 40 10 20 45 50 55 020 25 51015 30 35 max2265 power-added efficiency vs. output power output power (dbm) pae (%) max2265-25 v cc = 3.3v t a = +25 c v cc = 3.3v t a = +85 c v cc = 2.7v t a = -40 c v cc = 2.7v t a = +25 c v cc = 2.7v t a = +85 c v cc = 3.3v t a = -40 c typical operating characteristics (continued) (max2264/max2265/max2266 ev kits, v cc = +3.3v, shdn = v cc , cdma modulation, t a = +25?, unless otherwise noted.) 30 32 36 34 38 40 826 836 831 841 846 max2265 power-added efficiency vs. frequency max2265-26 frequency (mhz) pae (%) 36.75% 36.58% 36.74% 36.38% 36.50% -60 -40 -50 -20 -30 0 -10 10 30 20 40 center 836mhz max2265 tdma power spectrum max2265-27 15.2805khz/div span 152.805khz power (dbm) 0 20 40 60 80 100 120 140 2.5 3.5 3.0 4.0 4.5 5.0 5.5 max2266 shutdown current vs. supply voltage max2266-01 supply voltage (v) supply current (na) t a = +85 c t a = -40 c t a = +25 c pwr = gnd shdn = gnd no input drive 20 22 26 24 28 30 2.5 3.0 3.5 4.0 4.5 5.0 max2266 gain vs. supply voltage max2266 toc02 supply voltage (v) gain (db) pwr = v cc t a = +25 c t a = -40 c t a = +85 c 24 26 30 28 32 34 2.5 3.0 3.5 4.0 4.5 5.0 max2266 gain vs. supply voltage max2266 toc03 supply voltage (v) gain (db) pwr = gnd pin = set for acpr limit t a = +25 c t a = -40 c t a = +85 c
max2264/max2265/max2266 2.7v, single-supply, cellular-band linear power amplifiers _______________________________________________________________________________________ 9 26 28 32 30 34 36 2.5 3.0 3.5 4.0 4.5 5.0 max2266 power-added efficiency vs. supply voltage max2266 toc04 supply voltage (v) pae ( % ) pwr = v cc t a = +25 c t a = -40 c t a = +85 c 14 16 15 18 17 19 20 2.5 3.5 3.0 4.0 4.5 5.0 max2266 power-added efficiency vs. supply voltage max2266 toc05 supply voltage (v) pae ( % ) pwr = gnd t a = +25 c t a = -40 c t a = +85 c 25 26 28 27 30 31 29 32 023 1 45678 max2266 output power vs. input power max2266 toc06 input power (dbm) output power (dbm) pwr = v cc v cc = 3.3v t a = -40 c v cc = 2.7v t a = -40 c v cc = 3.3v t a = +85 c v cc = 2.7v t a = +85 c v cc = 2.7v t a = +25 c v cc = 3.3v t a = +25 c 24 20 16 12 8 -14 -8 -12 -10 -6 -4 -2 max2266 output power vs. input power max2266 toc07 input power (dbm) output power (dbm) pwr = gnd t a = +25 c t a = -40 c t a = +85 c 22 23 25 24 26 27 010 5 1520253035 max2266 gain vs. output power max2266 toc08 output power (dbm) gain (db) pwr = v cc v cc = 3.3v t a = -40 c v cc = 2.7v t a = -40 c v cc = 3.3v t a = +85 c v cc = 2.7v t a = +85 c v cc = 2.7v t a = +25 c v cc = 3.3v t a = +25 c 25 26 28 27 29 30 -10 -5 0 5 10 15 20 max2266 gain vs. output power max2266 toc09 output power (dbm) gain (db) pwr = gnd t a = +25 c t a = -40 c t a = +85 c 0 200 400 600 800 max2266 supply current vs. output power max2266 toc10 output power (dbm) supply current (ma) 01520 5 10 253035 v cc = 2.7v/3.3v at t a = -40 c/+25 c/+85 c pwr = v cc 160 120 80 40 0 09 3 6 12 15 18 max2266 supply current vs. output power max2266 toc11 output power (dbm) supply current (ma) pwr = gnd t a = +25 c t a = -40 c t a = +85 c -80 -70 -50 -60 -40 -30 -20 -10 0 10 20 30 max2266 adjacent-channel power ratio vs. output power max2266 toc12 output power (dbm) acpr (dbc) pwr = v cc t a = +25 c t a = -40 c t a = +85 c typical operating characteristics (continued) (max2264/max2265/max2266 ev kits, v cc = +3.3v, shdn = v cc , cdma modulation, t a = +25?, unless otherwise noted.)
max2264/max2265/max2266 2.7v, single-supply, cellular-band linear power amplifiers 10 ______________________________________________________________________________________ -80 -70 -50 -60 -40 -30 -10 -5 0 5 10 15 20 max2266 adjacent-channel power ratio vs. output power max2266 toc13 acpr (dbc) pwr = gnd t a = +25 c t a = -40 c t a = +85 c 0 5 10 15 20 25 30 35 40 45 50 55 0 5 10 15 20 25 30 35 max2266 power-added efficiency vs. output power max2266 toc14 output power (dbm) pae ( % ) pwr = v cc v cc = 2.7v v cc = 3.3v 20 15 10 5 0 -10 5 -5 0 101520 max2266 power-added efficiency vs. output power max2266 toc15 output power (dbm) pae ( % ) pwr = gnd t a = +25 c t a = -40 c t a = +85 c 38 36 34 32 30 28 824 836 830 842 848 31.3 % 32.2 % 32.4 % max2266 power-added efficiency vs. frequency max2266 toc16 frequency (mhz) pae ( % ) pwr = v cc p out = 28dbm 31.9 % 31.6 % 25 20 15 10 5 824 836 830 842 848 17.6 % 17.3 % 17.4 % 17.0 % 16.9 % max2266 power-added efficiency vs. frequency max2266 toc17 frequency (mhz) pae ( % ) pwr = gnd p out = 16dbm typical operating characteristics (continued) (max2264/max2265/max2266 ev kits, v cc = +3.3v, shdn = v cc , cdma modulation, t a = +25?, unless otherwise noted.)
max2264/max2265/max2266 2.7v, single-supply, cellular-band linear power amplifiers ______________________________________________________________________________________ 11 detailed description the max2264/max2265/max2266 are linear power amplifiers (pas) intended for cdma and tdma appli- cations. the devices have been fully characterized in the 824mhz to 849mhz u.s. cellular band and can be used from 750mhz to 1000mhz by adjusting the input and output match. in cdma applications, they provide typically 28dbm of output power and up to 37% power- added efficiency (pae) from a single +2.7v to +5v sup- ply. in tdma applications, efficiency is 42% at 30dbm of output power. an inherent drawback of traditional pas is that their effi- ciency drops rapidly with reduced output power. for example, in a pa designed for maximum efficiency at +28dbm, the efficiency at +15dbm falls well below 4.5% (over 210ma from a +3.3v supply). this behavior significantly reduces talk time in cdma phones because over 90% of the time they are at output pow- ers below +16dbm. the max2264/max2265/max2266 are optimized for lowest current draw at output powers that are most likely to occur in real-life situations. this provides up to 50% reduced average pa current. high-power and low-power modes the max2264/max2266 are designed to provide opti- mum pae in both high- and low-power modes. for a +3.3v supply, maximum output power is +28dbm in high-power mode and +16dbm in low-power mode. use the system? microcontroller to determine required output power, and switch between the two modes as appropriate with the pwr logic pin. bias control the bias current of the first stage in low-power mode is proportional to the current flowing out of bias1l. the voltage at bias1l is fixed by an internal bandgap refer- pin description in0 rf input port. requires external matching network. 16 bias1l out0 nfp gnd bias2h bias1h shdn bias2l out1 v cc pwr in1 name low-power mode first stage bias control. see general description . 10 rf output port. requires an appropriate output matching network and collector bias. 11 noise filtering pin. connect noise filtering network as described in noise filtering section. if unused, leave open. 12 12 ground. solder the package slug to high-thermal-conductivity circuit board ground plane. 13, slug 13, slug high-power mode second stage bias control. see general description . 15 15 high-power mode first stage bias control. see general description . 4 4 shutdown control input. drive shdn low to enable shutdown. drive high for normal operation. on the max2265, make sure that both pins get driven simultaneously. to place the max2264/max2266 into shutdown mode, also pull the pwr pin low. 2, 6 6 low-power mode second stage bias control. see general description . 7 rf output ports. require an appropriate output matching network and collector bias. 8, 9 8, 9 voltage supply. bypass with capacitors connected between this pin and gnd. 3, 5 3, 5, 14 mode-select input. drive low to select the low-power mode (bias1l and bias2l). drive high to select high-power mode (bias1h and bias2h). 2 pin rf input port. requires external matching network. 1 1 max2265 max2264 max2266 function n.c. not internally connected. do not make any connections to these pins. 7, 10, 11, 14, 16
max2264/max2265/max2266 2.7v, single-supply, cellular-band linear power amplifiers 12 ______________________________________________________________________________________ ence, so the current out of this pin is inversely propor- tional to the value of the resistor between this pin and ground. similarly, the bias current of the first stage in high-power mode is proportional to the current flowing out of bias1h. the current in the second stage is pro- portional to the currents out of bias2l and bias2h for low- and high-power modes, respectively. additionally, these resistors allow for customization of gain and alternate- and adjacent-channel power ratios. increasing the bias current in the first stage increases the gain and improves alternate-channel power ratio at the expense of efficiency. increasing the bias current in the second stage increases gain at the expense of effi- ciency as well as adjacent- and alternate-channel power ratios. the pa bias current can be dynamically adjusted by summing a current into the bias pin of interest with an external source such as a dac. see the max2265 typical application circuit for using a voltage dac and current setting resistors rtb1 and rtb2. choosing rtb1 = r1 and rtb2 = r2 allows current adjustment between 0ma to double the nominal idle current with dac voltages between 0v and 2.4v. the dac must be able to source approximately 100?. shutdown mode pull pins 2 and 6 low to place the max2264/max2265/ max2266 into shutdown mode. in this mode, all gain stages are disabled and supply current drops to 0.5?. increasing efficiency further the max2266 incorporates an additional external switch to increase efficiency to 17% at +16dbm and to 32% at +28dbm. this efficiency increase is mainly due to the additional isolation between the high- and low- power outputs provided by the external switch. applications information external components the max2264/max2265/max2266 require matching circuits at their inputs and outputs for operation in a 50 ? system. the application circuits in figures 1, 2, and 3 describe the topology of the matching circuits for 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 bias rfin l1 pwr v cc v cc v cc v cc shdn l3 c3 c4 l4 rh1 rl2 c1 c12 c11 l2 c2 rh2 c13 c8 c7 rfout c9 c5 rl1 c6 l6 l5 optional noise-reduction circuit v cc max2264 figure 1. max2264 typical application circuit
max2264/max2265/max2266 2.7v, single-supply, cellular-band linear power amplifiers ______________________________________________________________________________________ 13 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 bias rfin tx power l1 c1 v cc v cc v cc shdn c3 c4 c6 l6 l4 r1 r tb1 c12 c11 r2 c13 l7 c7 rfout c9 optional noise-reduction circuit max2265 l3 r tb2 optional tb circuit figure 2. max2265 typical application circuit each device; suggested component values, suppliers, and part numbers are listed in table 1. these values are optimized for best simultaneous efficiency and return loss performance. use high-quality components in these matching circuits for greatest efficiency. layout and power-supply bypassing a properly designed pc board is essential to any rf/microwave circuit. be sure to use controlled imped- ance lines on all high-frequency inputs and outputs. proper grounding of the gnd pins is fundamental; if the pc board uses a topside rf ground, connect all gnd pins (especially the tssop package exposed gnd pad) directly to it. on boards where the ground plane is not on the component side, it? best to connect all gnd pins to the ground plane with plated through-holes close to the package. to minimize coupling between different sections of the system, the ideal power-supply layout is a star configu- ration with a large decoupling capacitor at a central v cc node. the v cc traces branch out from this central node, each leading to a separate v cc node on the pc board. a second bypass capacitor with low esr at the rf frequency of operation is located at the end of each trace. this arrangement provides local decoupling at the v cc pin. input and output impedance-matching networks are very sensitive to layout-related parasitics. it is important to keep all matching components as close to the ic as possible to minimize the effects of stray inductance and stray capacitance of pc board traces.
max2264/max2265/max2266 noise filtering for improved noise performance, the max2264/ max2265/max2266 allow for additional noise filtering for further suppression of transmit noise. this is achieved by using c6 and l6 on the max2264, c13 and l7 on the max2265, and c6 and l6 on the max2266. use the recommended component values for optimal noise power (table 1). 2.7v, single-supply, cellular-band linear power amplifiers 14 ______________________________________________________________________________________ 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 bias rfin l1 c1 v cc v cc v cc v cc shdn c4 l4 rh1 c12 c11 rh2 c6 c13 rl1 optional noise- reduction circuit max2266 l3 c3 c2 l6 l2 c7 c9 c8 rfout 5 2 4 6 3 u1 upg152ta q1 v cc l5 c5 v cc pwr rl2 pwr r1 optional figure 3. max2266 typical application circuit
max2264/max2265/max2266 2.7v, single-supply, cellular-band linear power amplifiers chip information top view max2265 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 bias in1 n.c. bias2h n.c. gnd nfp n.c. n.c. out1 v cc shdn bias1h v cc out1 shdn tssop-ep n.c. transistor count: 1256 pin configurations (continued) 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 ____________________ 15 2001 maxim integrated products printed usa is a registered trademark of maxim integrated products.
english ? ???? ? ??? ? ??? what's new products solutions design appnotes support buy company members max2265 part number table notes: see the max2265 quickview data sheet for further information on this product family or download the max2265 full data sheet (pdf, 232kb). 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 conventions . 4. * some packages have variations, listed on the drawing. "pkgcode/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 max2265e/d rohs/lead-free: no max2265eue+ tssop;16 pin;4.4mm dwg: 21-0108e (pdf) use pkgcode/variation: u16e+3 * -40c to +85c rohs/lead-free: yes materials analysis max2265eue+t tssop;16 pin;4.4mm dwg: 21-0108e (pdf) use pkgcode/variation: u16e+3 * -40c to +85c rohs/lead-free: yes materials analysis
max2265eue tssop;16 pin;4.4mm dwg: 21-0108e (pdf) use pkgcode/variation: u16e-3 * -40c to +85c rohs/lead-free: no materials analysis max2265eue-t tssop;16 pin;4.4mm dwg: 21-0108e (pdf) use pkgcode/variation: u16e-3 * -40c to +85c rohs/lead-free: no materials analysis didn't find what you need? contact us: send us an email copyright 2007 by maxim integrated products, dallas semiconductor ? legal notices ? privacy policy

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