?005 fairchild semiconductor corporation 1 www.fairchildsemi.com f ebruary 2005 RMPA5255 rev. c RMPA5255 4.9?.9 ghz wlan linear power ampli?r module RMPA5255 4.9?.9 ghz wlan linear power ampli?r module features full 4.9 to 5.9 ghz operation 34 db small signal gain 230 ma total current at 18 dbm modulated power out 2.3% evm at 18 dbm modulated power out 3.3 v collector supply voltage integrated power detector with 20 db dynamic range lead-free 5 x 5 x 1.5 mm leadless package internally matched to 50 ? and dc blocked rf input/output internal dc bias de-coupling optimized for use in 802.11a applications description the RMPA5255 power ampli?r module is designed for high performance wlan applications in the 4.9?.9 ghz frequency band. the 10 pin, 5 x 5 x 1.5 mm package with internal match- ing on both input and output to 50 ? , and internal bias network components, allow for extremely simpli?d integration. an on- chip detector provides power sensing capability. the pa s low power consumption and excellent linearity are achieved using our ingap heterojunction bipolar transistor (hbt) technology. device electrical characteristics 1 802.11a ofdm modulation (176 ? burst time, 100 ? idle time) 54 mbps data rate, 16.7 mhz bandwidth notes: 1. vcc = 3.3v, vpc = 2.9v, t a = 25?, pa is constantly biased, 50 ? system. 2. percentage includes system noise floor of evm = 0.8%. 3. p out measured at p in corresponding to power detection threshold. p arameter min typ max units f requency 4.9 5.9 ghz collector supply voltage 3.0 3.3 3.6 v mirror supply voltage 2.9 v mirror supply current 26 ma gain 33 db t otal current @ 18dbm pout 230 ma evm @ 18dbm pout 2 2.3 % detector output @ 18dbm pout 450 mv detector threshold 3 5dbm
2 www.fairchildsemi.com RMPA5255 rev. c RMPA5255 4.9?.9 ghz wlan linear power ampli?r module electrical characteristics 1 single tone notes: 1. vcc = 3.3v, vpc = 2.9v, t a = 25?, pa is constantly biased, 50 ? system. 2. power control bias current is included in the total quiescent current. 3. measured from device on signal turn on, (logic low) to the point where rf p out stabilizes to 0.5db. 4. p out measured at p in corresponding to power detection threshold. functional block diagram p arameter min typ max units f requency 4.9 5.9 ghz supply voltage (vcc) 3.0 3.3 3.6 v po w er control voltage (vpc) 2.6 2.9 3.1 v gain 33.5 db t otal quiescent current 160 ma bias current at pin vpc 2 26 ma p1db compression 26 dbm current @ p1db compression 508 ma shutdown current (vpc = 0v) <1.0 ? input return loss 12 db output return loss 20 db detector output at p1db compression 1.1 v detector pout threshold 4 5v tu r n-on time 3 <1.0 ? output match input match 1 2 3 4 5 6 7 8 10 9 bias control voltage detector gnd gnd gnd gnd rf out rf in pc psense vcc n/c
3 www.fairchildsemi.com RMPA5255 rev. c RMPA5255 4.9?.9 ghz wlan linear power ampli?r module p erformance data 802.11a ofdm modulation (176 ms burst time, 100 ms idle time) 54 mbps data rate, 16.7 mhz bandwidth p erformance data single tone RMPA5255 evm vs. modulated pout vcc=3.3v, vpc=2.9v, t=25 c RMPA5255 gain vs. modulated pout vcc=3.3v, vpc=2.9v, t=25 c RMPA5255 detector voltage vs. modulated pout vcc=3.3v, vpc=2.9v, t=25 c RMPA5255 total current vs. modulated pout vcc=3.3v, vpc=2.9v, t=25 c total measured evm (%) itotal (ma) modulated power out (dbm) modulated power out (dbm) modulated power out (dbm) modulated power out (dbm) note: uncorrected evm. source evm is approximately 0.8%. 28 29 30 31 32 33 34 35 510152 02530 4.9 ghz 5.1 ghz 5.3 ghz 5.5 ghz 5.7 ghz 5.9 ghz 0 1 2 3 4 5 6 7 8 510152025 4.9 ghz 5.1 ghz 5.3 ghz 5.5 ghz 5.7 ghz 5.9 ghz 150 200 250 300 350 400 51015202530 4.9 ghz 5.1 ghz 5.3 ghz 5.5 ghz 5.7 ghz 5.9 ghz 300 400 500 600 700 800 51015202530 4.9 ghz 5.1 ghz 5.3 ghz 5.5 ghz 5.7 ghz 5.9 ghz gain (db) detector voltage (mv) RMPA5255 gain vs. single tone pout vcc=3.3v, vpc=2.9v, t=25 c RMPA5255 s-parameters vs. frequency vcc=3.3v, vpc=2.9v, t=25 c gain (db) single tone power out (dbm) frequency (ghz) 0 5 10 15 20 25 30 35 -35 -30 -25 -20 -15 -10 -5 0 4.5 5 5.5 6 6.5 s21 (db) s11 (db) s22 (db) 26 28 30 32 34 36 12 14 16 18 20 22 24 26 28 4.9 ghz 5.1 ghz 5.3 ghz 5.5 ghz 5.7 ghz 5.9 ghz s21 (db) s11, s22 (db)
4 www.fairchildsemi.com RMPA5255 rev. c RMPA5255 4.9?.9 ghz wlan linear power ampli?r module schematic pa ck ag e outline pin 1 2 3 4 5 6 7 8 9 10 11 d escriptio n gnd rf in gnd vpc vcc gnd rf out gnd vdet (p-sense) n/c center gnd vdet (p-sense) vpc vcc c1 220pf rf out zxytt 5255 10 50 ? 50 ? 9 1 2 3 8 7 6 45 rf in c2 0.01 f c3 2.2 f dime nsions in mm zxytt 5255 10 top view front view bottom view i/o 1 indicator 5.00 0.10mm 5.00 0.10mm notes: 1. package base material and interconnect metallization: = exposed metal contact pads 2. smt exposure: this device will withstand exposure to temperatures of 240 c maximum for dwell time of 10 seconds maximum. bt grade ccl-hl832, aunicu, au 0.38 micrometers minimum. 1.40 0.10mm 1.40 typ. 1.80 typ. 0.70 typ. 0.10 typ. 1.70 typ. 0.40 typ. 2.80 sq. 1.10 typ. 0.60 typ. 0.70 typ. 9 45 8 7 6 1 2 3 2 1 zxytt 5255
5 www.fairchildsemi.com RMPA5255 rev. c RMPA5255 4.9?.9 ghz wlan linear power ampli?r module evaluation board bill of materials evaluation board layout evaluation board turn-on sequence 1 recommended turn-on sequence: 1) connect common ground terminal to the ground (gnd) pin on the board. 2) connect voltmeter to vdet (p-sense). 3) apply positive supply voltage (3.3 v) to pin vcc (collector voltage). 4) apply positive bias voltage (2.9 v) to pin vpc (power control voltage). 5) at this point, you should expect to observe the following positive currents ?wing into the pins: pin current vcc 150 ?170 ma vpc 21 ?31 ma 6) apply input rf power to sma connector pin rfin. current for pin vcc will vary depending on the input drive level. 7) vary positive voltage vpc from +2.9 v to +0 v to shut down the ampli?r or alter the power level. shut down current ?w into the pins: pin current vcc <1 na recommended turn-off sequence: use reverse order described in the turn-on sequence above. note: 1. turn on sequence is not critical and it is not necessary to sequence power supplies in actual system level design. actu al board size = 2.0" x 1.5"
6 www.fairchildsemi.com RMPA5255 rev. c RMPA5255 4.9?.9 ghz wlan linear power ampli?r module disclaimer fairchild semiconductor reserves the right to make changes without further notice to any products herein to improve reliability, function or design. fairchild does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights, nor the rights of others. trademarks the following are registered and unregistered trademarks fairchild semiconductor owns or is authorized to use and is not intended to be an exhaustive list of all such trademarks. life support policy f airchild?s products are not authorized for use as critical components in life support devices or systems without the express written approval of fairchild semiconductor corporation. as used herein: 1. life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, or (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user. 2. a critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. product status definitions definition of terms datasheet identification product status definition advance information preliminary no identification needed obsolete this datasheet contains the design specifications for product development. specifications may change in any manner without notice. this datasheet contains preliminary data, and supplementary data will be published at a later date. fairchild semiconductor reserves the right to make changes at any time without notice in order to improve design. this datasheet contains final specifications. fairchild semiconductor reserves the right to make changes at any time without notice in order to improve design. this datasheet contains specifications on a product that has been discontinued by fairchild semiconductor. the datasheet is printed for reference information only. formative or in design first production full production not in production intellimax? isoplanar? littlefet? microcoupler? microfet? micropak? microwire? msx? msxpro? ocx? ocxpro? optologic ? optoplanar? p acman? f ast ? f astr? fps? frfet? globaloptoisolator? gto? hisec? i 2 c? i-lo ? implieddisconnect? rev. i15 acex? activearray? bottomless? coolfet? crossvolt ? dome? ecospark? e 2 cmos? ensigna? f act? f act quiet series? pop? power247? poweredge? powersaver? powertrench ? qfet ? qs? qt optoelectronics? quiet series? rapidconfigure? rapidconnect? serdes? silent switcher ? smart start? spm? s tealth? superfet? supersot?-3 supersot?-6 supersot?-8 syncfet? tinylogic ? tinyopto? trutranslation? uhc? ultrafet ? unifet? vcx? across the board. around the world.? the power franchise ? programmable active droop?
|
