specifications and information are subject to change without notice wj communications, inc ? phone 1-800-wj1-4401 ? fax: 408-577-6621 ? e-mail: sales@wj.com ? web site: www.wj.com page 1 of 5 february 2006 ap503 dcs-band 4w hbt amplifier module product information the communications ed g e tm product features ? 1805 ? 1880 mhz ? 32.2 db gain ? +25 dbm cdma2k 7 fa power (-64 dbc acpr) ? +12 v single supply ? power down mode ? bias current adjustable ? rohs-compliant flange-mount pkg applications ? final stage amplifiers for repeaters ? optimized for driver amplifier pa mobile infrastructure product description the ap503 is a high dynamic range power amplifier in a rohs-compliant flange-mount package. the multi-stage amplifier module has 31.5 db gain. the module has been internally optimized for linearity to provide +25 dbm (-64 dbc acpr) linear power for 7-carrier cdma2000 applications. the ap503 uses a high reliability ingap/gaas hbt process technology and does not require any external matching components. the module operates off of a +12v supply and does not requiring an y negative biasing voltages; an internal active bias allows the amplifier to maintain high linearity over temperature. it has the added feature of a +5v power down control pin. while the module has been tuned for optimal performance for class ab applications, the quiescent current can also be adjusted for class b applications through an external resistor. a low-cost metal housing allows the device to ha ve a low thermal resistance and achieves over 100 years mttf. all devices are 100% rf and dc tested. the ap503 is targeted for use as a driver or final stage amplifier in wireless infrastructure where high linearity and high power is required. this combination makes the device an excellent candidate for next generation multi-carrier 3g base stations using the dcs1800 frequency band. functional diagram top view pin no. function 1 rf output 2 / 4 vcc 3 / 5 vpd 6 rf input case ground specifications (1) 25 oc, v cc =12v, v pd =5v, i cq =835ma, r7=0 ? , 50 ? unmatched fixture parameter units min typ max test conditions operational bandwidth mhz 1805 ? 1880 test frequency mhz 1845 adjacent channel power ratio dbc -63.8 -61 cdma2000 7 fa 25 dbm total power, 885 khz offset power gain db 29.5 32.2 34.5 pout = +25 dbm input return loss db 11 output return loss db 6 output p1db dbm +36 output ip3 dbm +50 pout = +23 dbm/tone, f = 1 mhz operating current (2) ma 790 850 940 pout = +25 dbm quiescent current, icq (2) ma 780 835 920 device voltage, vcc v +12 device voltage, vpd v +5 pull- down voltage: 0v = ?off?, 5v=?on? load stability vswr 10:1 1. test conditions unless otherwise noted: 25oc. 2. the current can be adjusted through an external resist or from the 5v supply to the pull-down voltage pin (pin 3). absolute maximum rating parameter rating operating case temperature -40 to +85 c storage temperature -55 to +150 c rf input power (continuous) with output terminated in 50 ? +15 dbm operation of this device above any of th ese parameters may cause permanent damage. ordering information part no. description ap503 dcs-band 4w hbt amplifier module AP503-PCB fully-assembled evaluation board (class ab configuration, icq=835ma) 1 2 3 4 5 6
specifications and information are subject to change without notice wj communications, inc ? phone 1-800-wj1-4401 ? fax: 408-577-6621 ? e-mail: sales@wj.com ? web site: www.wj.com page 2 of 5 february 2006 ap503 dcs-band 4w hbt amplifier module product information the communications ed g e tm performance graphs ? class ab configuration (AP503-PCB) the AP503-PCB and ap503 module is configured for class ab by default. the resistor ? r7 ? which sets the current draw for the amplifier is set at 0 ? in this configuration. increasing that value will decrease the quiescent and operating current of the amplifier module, as described on the next page. notes: 1. please note that for reliable operation, the evaluation board will have to be mounted to a much larger heat sink during operation and in laboratory environments to dissipate the power consumed by the device. the use of a convection fan is also recommended in laboratory environments. details of the mounting holes used in the wj heatsink are given on the last page of this datasheet. 2. the area around the module underneath the pcb should not contain any soldermask in order to maintain good rf grounding. 3. for proper and safe operation in the laboratory, the power-on sequencing should be followed: 1. connect rf in and out 2. connect the voltages and ground pins as shown in the circuit. 3. apply the rf signal 4. power down with the reverse sequence gain +25 c, 12vcc, icq=850ma 28 29 30 31 32 33 1800 1820 1840 1860 1880 1900 frequency (mhz) gain ( db ) return loss +25 c, vcc=12v, icq=850ma -25 -20 -15 -10 -5 0 1800 1820 1840 1860 1880 1900 frequency (mhz) ma g nitude ( db ) s11 s22 gain vs. temp 1855 mhz, vcc=12v, icq=850ma 26 28 30 32 34 36 -40-20 0 20406080 temperature (c) gain ( db ) acpr vs. output power vs. temp cdma2000 sr1, 7 fa , fc=1855 mhz, f=885 khz, vcc=12v, icq=850ma -70 -65 -60 -55 -50 18 20 22 24 26 28 total output power (dbm) acpr ( dbc ) -40 c +25 c +85 c acpr vs. output power vs. temp cdma2000 sr1, 7 fa , fc=1855 mhz, f=1.98 mhz, vcc=12v, icq=850ma -70 -65 -60 -55 -50 18 20 22 24 26 28 total output power (dbm) acpr ( dbc ) -40 c +25 c +85 c acpr vs. frequency vs. temp cdma2000 sr1, 7 fa , f=885 khz, 25 dbm pout, vcc=12v, icq=850ma -70 -65 -60 -55 -50 1840 1850 1860 1870 frequency (mhz) acpr ( dbc ) -40 c +25 c +85 c dnp dnp dnp dnp dnp dnp dnp dnp dnp 0 ? 0 ? 0 ? 0 ? 10 f .01
specifications and information are subject to change without notice wj communications, inc ? phone 1-800-wj1-4401 ? fax: 408-577-6621 ? e-mail: sales@wj.com ? web site: www.wj.com page 3 of 5 february 2006 ap503 dcs-band 4w hbt amplifier module product information the communications ed g e tm performance graphs (cont?d) acpr vs. output power cdma2000 sr1, 1 fa , fc=1855 mhz, +25 c, vcc=12v, icq=850ma -90 -80 -70 -60 18 20 22 24 26 28 total output power (dbm) acpr ( dbc ) 1.98 mhz offset 885 khz offset icc vs. output power 1855 mhz, vcc=12v, icq=850ma 780 800 820 840 860 880 18 20 22 24 26 28 output channel power (dbm) icc ( ma ) -40 c +25 c +85 c icc / pae vs. output power 1855 mhz, +25 c, vcc=12v, icq=850ma 0 0.2 0.4 0.6 0.8 1 20 22 24 26 28 30 32 34 output power (dbm) icc ( ma ) / p a e pae icc output power / gain vs. input power 1855 mhz, +25 c, vcc=12v, icq=850ma 28 30 32 34 36 38 -4-20246 input power (dbm) gain ( db ) / pout ( dbm ) pout gain imd vs. output power per tone 1855 mhz, +25 c, vcc=12v, icq=850ma -80 -70 -60 -50 -40 -30 18 20 22 24 26 28 output power per tone (dbm) im d ( db ) imd3_upper imd3_lower imd5 oip3 vs. output power per tone 1855 mhz, +25 c, vcc=12v, icq=850ma 30 35 40 45 50 55 18 20 22 24 26 28 output power per tone (dbm) oip3 ( dbm )
specifications and information are subject to change without notice wj communications, inc ? phone 1-800-wj1-4401 ? fax: 408-577-6621 ? e-mail: sales@wj.com ? web site: www.wj.com page 4 of 5 february 2006 ap503 dcs-band 4w hbt amplifier module product information the communications ed g e tm mttf calculation the mttf of the ap503 can be calculated by first determining how much power is being dissipated by the amplifier module. because the device?s intended application is to be a power amplifier pre- driver or final stage output amplifier, the output rf power of the amplifier will help lower the overall power dissipation. in addition, the amplifier can be biased with different quiescent currents, so the calculation of the mttf is custom to each application. the power dissipation of the device can be calculated with the following equation: p diss = v cc * i cc ? (output rf power ? input rf power), v cc = operating supply voltage = 12v i cc = operating current {the rf power is converted to watts} while the maximum recommended case temperature on the datasheet is listed at 85 ? c, it is suggested that customers maintain an mttf above 1 million hours. this would convert to a derating curve for maximum case temperature vs. power dissipation as shown in the plot below. maximum recommended case temperature vs. power dissipation to maintain 1 million hours mttf 50 60 70 80 90 456789101112 power dissipation (watts) maximum case temperature (c) to calculate the mttf for the module, the junction temperature needs to be determined. this can be easily calculated with the module?s power dissipation, the thermal resistance value, and the case temperature of operation: t j = p diss * r th + t case t j = junction temperature p diss = power dissipation (calculated from above) r th = thermal resistance = 9 ? c/w t case = case temperature of module?s heat sink from a numerical standpoint, the mttf can be calculated using the arrhenius equation: mttf = a* e (ea/k/tj) a = pre-exponential factor = 6.087 x 10 -11 hours ea = activation energy = 1.39 ev k = boltzmann?s constant = 8.617 x 10 -5 ev/ ok t j = junction temperature (ok) = t j (oc) + 273 a graphical view of the mttf can be shown in the plot below. mttf vs. junction temperature 1.e+05 1.e+06 1.e+07 130 140 150 160 170 180 junction temperature (c) mttf (hours)
specifications and information are subject to change without notice wj communications, inc ? phone 1-800-wj1-4401 ? fax: 408-577-6621 ? e-mail: sales@wj.com ? web site: www.wj.com page 5 of 5 february 2006 ap503 dcs-band 4w hbt amplifier module product information the communications ed g e tm outline drawing 23 4 5 6 1 ap503 outline drawing for th e heatsink with the wj evaluation board product marking the device will be marked with an ?ap503? designator with an alphanumeric lot code on the top surface of the package noted as ?abcd? on the drawing. a manufacturing date will also be printed as ?xxyy?, where the ?xx? represents the week number from 1 ? 52. the product will be shipped in tubes in multiples of 15. esd / msl information esd rating: class 1c value: passes at 1,000 to < 2,000 volts test: human body model (hbm) standard: jedec standard jesd22-a114 esd rating: class iii value: passes 500 to < 1,000 volts test: charged device model (cdm) standard: jedec standard jesd22-c101
|
