rev. 4514i?wlan?07/04 features frequency range 4.9 ghz to 5.9 ghz supply-voltage 2.7 v to 3.6 v 3.5% evm at 19 dbm output power at 54 mbit/s ofdm 25.5 dbm p 1db on-chip power detector with 25 dbm dynamic range power-down mode and biasing control low profile lead-free plastic package qfn16 (4 4 0.9 mm) applications ieee 802.11a ofdm wlan hiperlan2 wlan pc cards, pcmcia 5 ghz ism band application electrostatic sensitive device. observe precautions for handling. description process the 5-ghz power amplifier is designed in atmel?s advanced silicon-germanium (sige) process and provides excellent linearity and noise performance as well as good power-added efficiency. circuitry the pa consists of a two-stage amplifier with a p 1db of 25.5 dbm. the output stage was realized using an open-collector structure. power-up/down and output level are controlled at bias control pin 6 (vctl). an on-chip power detector provides a voltage proportional to the output power. figure 1. block diagram matching rfin 3 rfout 11 6 vctl 16 vcc_ctl vcc1 15 vcc2 13 atr3515 rfout 10 bias control power detector 7 vdet_out 5-ghz wlan power amplifier for 802.11a atr3515 preliminary
2 atr3515 [preliminary] 4514i?wlan?07/04 pin configuration figure 2. pinning qfn16 gnd nc rfin gnd gnd rfout rfout gnd vcc_ctl vcc1 gnd vcc2 gnd vctl vdet_out gnd 16 15 14 13 5 6 7 8 1 2 3 4 12 11 10 9 atr3515 gnd on the paddel pin description pin symbol function 1 gnd ground 2 nc not connected 3 rfin rf input 4 gnd ground 5 gnd ground 6 vctl power-up/biasing control voltage 7 vdet_out power detector output voltage 8 gnd ground 9 gnd ground 10 rfout rf output 11 rfout rf output 12 gnd ground 13 vcc2 supply voltage for pa stage 14 gnd ground 15 vcc1 supply voltage for driver stage 16 vcc_ctl supply voltage for biasing control paddel ? ground
3 atr3515 [preliminary] 4514i?wlan?07/04 absolute maximum ratings stresses beyond those listed under ?absolute maximum ratings? may cause permanent damage to the device. this is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability . parameters symbol value unit supply voltage v cc 3.9 v supply current i cc 800 ma junction temperature t j 150 c storage temperature t stg -40 to +125 c input rf power p in 12 dbm control voltage power up/down and biasing v ctl 0 to 2.0 v note: the part may not survive all maximums applied simultaneously. operating range parameters symbol value unit supply voltage range v cc 2.7 to 3.6 v ambient temperature range t amb -25 to +75 c electrical characteristics no. parameters test conditions symbol min. typ. max. unit 1.0 supply voltage v cc 2.7 3.3 3.6 v 1.1 frequency range f 4.9 5.9 ghz 1.2 control voltage range pa operating mode v ctl 1.25 1.6 v 1.3 power down mode v ctl 0.2 v 1.4 control current pa operation i ctl 200 a 1.5 current consumption quiescent icq 110 ma 1.6 current consumption power down mode ipd 10 a 1.7 turn on/off time on is the time that icc returns to normal and off is the time the current needs to decrease to 10% of normal mode t on/off 0.5 0.6 s 1.8 input and output return loss with external matching -12 -8 db 1.9 spectrum mask (1) at 11 mhz offset from carrier -22 dbr 1.10 at 20 mhz offset from carrier -30 dbr 1.11 at 30 mhz offset from carrier -42 dbr note: 1. ofdm signal according to 802.11a specification with p out = 21 dbm at 54 mbps.
4 atr3515 [preliminary] 4514i?wlan?07/04 electrical characteristics - unmodulated carrier test conditions (unless otherwise stated): v cc = 3.3 v, frequency = 5.25 ghz, t amb = 25c no. parameters test conditions symbol min. typ. max. unit 2.0 saturated output power for reference psat 26.5 dbm 2.1 p1db output power p1db 25.5 dbm 2.3 small signal gain icq = 180 ma, small signal condition gl 18 db 2.4 gain deviation within 200 mhz frequency band gd -1 +1 db 2.5 reverse isolation isor 30 36 db electrical character istics - 54 mbps ofdm-modulation test conditions (unless otherwise stated): v cc = 3.3 v, frequency = 5.25 ghz, t amb = 25c, ieee802.11a conform 54 mbps ofdm modulation, evm measurement equipment noise floor is included in evm measurement result. no. parameters test conditions symbol min. typ. max. unit 3.0 error vector magnitude p out = 19 dbm evm 3.5 % 3.1 linear power gain p out = 19 dbm gl 18 db 3.2 current consumption p out = 19 dbm i cc 240 ma electrical characteristics - power detector test conditions (unless otherwise stated): v cc = 3.3 v, frequency = 5.25 ghz, t amb = 25c. no. parameters test conditions symbol min. typ. max. unit 4.0 detector voltage range p out = 2 to 27 dbm v det 01.7v 4.2 settling time tset 0.5 s
5 atr3515 [preliminary] 4514i?wlan?07/04 figure 3. application circuit vcc_ctl vcc1 input vctl * microstrip line * output vcc2 atr3515 * * vdet_out
6 atr3515 [preliminary] 4514i?wlan?07/04 package information ordering information extended type number package remarks ATR3515-PEP qfn16 - 4x4 taped and reeled, moq 1500 atr3515-peq qfn16 - 4x4 taped and reeled, moq 6000
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