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rev. 4564f?wlan?07/04 features frequency range 2.4 ghz to 2.5 ghz supply voltage 2.7 v to 3.6 v 21 dbm linear output power for ieee 802.11b mode 3.5% evm at 15.5 dbm output power for ieee 802.11g mode on-chip power detector with 20 db dynamic range power-down mode and biasing control no external components for input matching low profile plastic package qfn16 (4 4 0.9 mm) benefits ieee 802.11b wlan ieee 802.11g ofdm wlan pc cards, pcmcia 2.4 ghz ism band application electrostatic sensitive device. observe precautions for handling. description circuitry the pa?s is designed for low current-consumption 802.11b and 802.11g multi-mode applications such as mini-pci and pcmcia for portable devices. the low profile plastic package with internal input matching to 50 ? minimizes the pcb board-space and allows simplified integration with very few passive components. the on-chip power-detector provides a voltage linear to the output power while the standby/bias control logic provides power saving and shutdown as well as a linear adjustment of output power. the pa is realized as a two stage pa with internal interstage-matching and an open-collector output structure. process the power amplifier is designed in atmel's silicon-germanium (sige) process and provides excellent linearity and noise performance, high gain as well as good power- added efficiency. 2.4-ghz sige power amplifier for 802.11b/g wlan systems t7031 preliminary
2 t7031 [preliminary] 4564f?wlan?07/04 figure 1. block diagram 15 14 13 nc 11 10 1 2 3 4 standby/ biasing control det. 5 6 7 12 v2_pa_out 9 16 sige pa t7031 int_match v_det_out gnd vcc gnd vctrl 8 v2_pa_out v2_pa_out v2_pa_out
3 t7031 [preliminary] 4564f?wlan?07/04 pin configuration figure 2. pinning qfn16 vcc gnd vctrl int_match nc gnd v_det_out int_match v1_pa v1_pa pa_in in_match v2_pa_out v2_pa_out v2_pa_out v2_pa_out 16 15 14 13 5 6 7 8 1 2 3 4 12 11 10 9 t7031 gnd on the paddel pin description pin symbol function 1 vcc supply voltage 2 gnd ground 3 vctrl power-up/biasing control voltage 4 int_match interstage matching (must not be connected) 5 v2_pa_out power amplifier output and supply voltage for 2 nd power amplifier stage 6 v2_pa_out power amplifier output and supply voltage for 2 nd power amplifier stage 7 v2_pa_out power amplifier output and supply voltage for 2 nd power amplifier stage 8 v2_pa_out power amplifier output and supply voltage for 2 nd power amplifier stage 9 int_match interstage matching (must not be connected) 10 v_det_out power detector output 11 gnd ground 12 nc not connected 13 in_match input matching (must not be connected) 14 pa_in power amplifier input 15 v1_pa supply voltage for 1 st power amplifier stage 16 v1_pa supply voltage for 1 st power amplifier stage slug ? ground
4 t7031 [preliminary] 4564f?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, no rf voltage applied v cc 6v supply current i cc 200 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 ctrl 0 to 3 v note: the part may not survive all maximums applied simultaneously. thermal resistance parameters symbol value unit junction ambient r thja 45 k/w operating range parameters symbol value unit supply voltage range v cc 2.7 to 3.6 v ambient temperature range t amb -30 to +80 c electrical characteristics no. parameters test conditions pin symbol min. typ. max. unit type* 1.0 supply voltage v cc 2.7 3.3 3.6 v a 1.1 frequency range f 2400 2500 mhz a 1.2 control voltage range pa operating mode v ctrl 12va 1.3 power-down mode v ctrl 0.2 v a 1.4 current consumption quiescent i cq 75 ma a 1.5 power-down mode i pd 10 a a *) type means: a = 100% tested, b = 100% correlation tested, c = characterized on samples, d = design parameter
5 t7031 [preliminary] 4564f?wlan?07/04 electrical characteristics - unmodulated carrier test conditions (unless otherwise stated): v cc = 3.3 v, frequency = 2.45 ghz, t amb = 25c no. parameters test conditions pin symbol min. typ. max. unit type* 2.0 saturated output power for reference p sat 24 dbm a 2.1 p1db output power p1db 23 dbm a 2.2 2 nd harmonic rejection p out = 18 dbm, with external matching 2f out 30 db a 2.3 small signal gain i cq , small signal condition gl 22 db a 2.4 reverse isolation i cq , small signal condition isor 40 db a 2.5 input 50 ? vswr i cq , small signal condition vswrin 2:1 c 2.6 output 50 ? vswr i cq , small signal condition, with external matching vswrout 2:1 c *) type means: a = 100% tested, b = 100% correlation tested, c = characterized on samples, d = design parameter electrical character istics - 11 mbps cck modulation test conditions (unless otherwise stated): v cc = 3.3 v, frequency = 2.45 ghz, t amb = 25 c, ieee 802.11b conform 11 mbps cck modulation with gaussian transmit filtering no. parameters test conditions pin symbol min. typ. max. unit type* 3.0 maximum linear output power acpr1 33 dbc acpr2 55 dbc p lin 21 dbm a 3.1 linear power gain p out = p lin acpr1 33 dbc acpr2 55 dbc gl 22 db a 3.2 current consumption p out = p lin acpr1 33 dbc acpr2 55 dbc i cc 130 ma a *) type means: a = 100% tested, b = 100% correlation tested, c = characterized on samples, d = design parameter electrical character istics - 54 mbps ofdm modulation test conditions (unless otherwise stated): v cc = 3.3 v, frequency = 2.45 ghz, t amb = 25 c, ieee 802.11g conform 54 mbps ofdm modulation, 0.7% evm measurement equipment noise floor included in evm measurement result. no. parameters test conditions pin symbol min. typ. max. unit type* 4.0 error vector magnitude p out = 15.5 dbm evm 3.5 % c 4.1 linear power gain p out = 15.5 dbm gl 22 db a 4.2 current consumption p out = 15.5 dbm i cc 85 ma a *) type means: a = 100% tested, b = 100% correlation tested, c = characterized on samples, d = design parameter
6 t7031 [preliminary] 4564f?wlan?07/04 typical operating characteristics figure 3. typical gain and current versus control voltage frequency = 2450 mhz, p in = -40 dbm, v cc = 3.3 v figure 4. s-parameter, magnitude power detector test conditions (unless otherwise stated): v cc = 3.3 v, frequency = 2.45 ghz, t amb = 25 c no. parameters test conditions pin symbol min. typ. max. unit type* 5.0 detector voltage range p out = 2 to 22 dbm v det 02va 5.1 settling time t set 0.5 s c *) type means: a = 100% tested, b = 100% correlation tested, c = characterized on samples, d = design parameter -20 -15 -10 -5 0 5 10 15 20 25 30 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 v ctrl (v) gain (db) 0 70 140 210 280 350 i (ma) gain i ges i 3 i 1 i 2
7 t7031 [preliminary] 4564f?wlan?07/04 figure 5. s-parameters, magnitude and phase figure 6. power-sweep, cw-mode frequency = 2450 mhz, v cc = 3.3 v, v ctrl = 1.56 v 0 5 10 15 20 25 30 35 40 -20 -15 -10 -5 0 5 10 15 20 25 30 p out (dbm) gain (db), pae (%) 0 40 80 120 160 200 240 280 320 i (ma) pae gain i ges i 3 i 1 i 2
8 t7031 [preliminary] 4564f?wlan?07/04 figure 7. cck-modulation spectrum conforming compliance to 802.11b spectral mask (3/5 db additional margin at acpr 1/2 compared to limit given by ieee802.11b standard) at p out = 21 dbm, v cc = 3.3 v, v ctrl = 1.56 v figure 8. frequency-sweep at p in = -1.9 dbm, v cc = 3.3 v, v ctrl = 1.56 v (acpr limit), cw-mode 0 5 10 15 20 25 30 35 2400 2410 2420 2430 2440 2450 2460 2470 2480 2490 2500 frequency (mhz) p out (dbm), voltage (v), gain (db), pae (%) 0 20 40 60 80 100 120 140 160 180 i (ma) p out i 1 i 2 i ges pae i 3 gain
9 t7031 [preliminary] 4564f?wlan?07/04 figure 9. v ctrl -sweep at maximum linear p out (acpr limit), cw-mode, frequency = 2450 mhz, p in = -1.9 dbm, v cc = 3.3 v figure 10. error vector magnitude (evm) for 54 mbit ofdm-modulation, power added efficiency (pae), gain versus p out figure 11. frequency-sweep at evm = 3.5% (evm limit), cw-mode p in = -6.3 dbm, v cc = 3.3 v, v ctrl = 1.56 v 0 5 10 15 20 25 30 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 v ctrl (v) p out (dbm), gain (db), pae (%) 0 60 120 180 240 300 360 i (ma) pae i 1 i 2 i 3 i ges gain p out 0 5 10 15 20 25 30 0 5 10 15 20 25 p out (dbm) gain (db), pae (%) 0 2 4 6 8 10 12 evm (%) pae gain evm evm limit 3.5% 0 5 10 15 20 25 30 2400 2410 2420 2430 2440 2450 2460 2470 2480 2490 2500 frequency (mhz) p out (dbm), gain (db), pae (%) 0 20 40 60 80 100 120 i (ma) p out pae i ges gain i 1 i 2 i 3
10 t7031 [preliminary] 4564f?wlan?07/04 figure 12. v ctrl -sweep at evm = 3.5% (evm limit), cw-mode frequency = 2450 mhz, p in = -6.3 dbm, v cc = 3.3 v figure 13. power detector voltage versus p out (unmodulated carrier), cw-mode frequency = 2450 mhz, v cc = 3.3 v, v ctrl = 1.56 v -20 -15 -10 -5 0 5 10 15 20 25 30 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 v ctrl (v) p out (dbm), gain (db), pae (%) 0 70 140 210 280 350 i (ma) p out gain pae i ges i 3 i 1 i 2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 -20 -15 -10 -5 0 5 10 15 20 25 30 p out (dbm) detector voltage (v) v det
11 t7031 [preliminary] 4564f?wlan?07/04 figure 14. power detector response rising edge figure 15. power detector response falling edge
12 t7031 [preliminary] 4564f?wlan?07/04 evaluation board schematic figure 16. schematic of the evaluation board 15 14 13 nc 11 10 1 2 3 4 standby/ biasing control det. 5 6 7 8 12 9 16 sige pa t7031 c 3 v ctrl c 9 c 11 c 10 l 2 v2_pa c 12 c 13 v_det_out nc nc nc pa_out v1_pa c 1 pa_in c 2 v cc c 6 l 1 c 2 c 7 t 1 * t 2 * t 3 * c 14 c 8 c 5 * microstrip line microstrip line length width t 1 3.0 mm 0.64 mm t 2 1.7 mm 0.64 mm t 3 2.4 mm 0.64 mm metal layer distance to ground: 360 m cu metal layer thickness: 35 m dielectrical constant r: 4.4
13 t7031 [preliminary] 4564f?wlan?07/04 evaluation board bill of materials evaluation board layout figure 17. layout of the evaluation board table 1. bill of materials of the evaluation board component reference value size capacitor c 1 4p7 0603 capacitor c 2 56p 0603 capacitor c 3 1n 0603 capacitor c 4 (1) 1 0603 capacitor c 5 4p7 0603 capacitor c 6 (1) 1n 0603 capacitor c 7 (1) 1 0603 capacitor c 8 4p7 0603 capacitor c 9 (1) 1n 0603 capacitor c 10 4p7 0603 capacitor c 11 2p2 0603 capacitor c 12 56p 0603 capacitor c 13 1n 0603 capacitor c 14 (1) 1 0603 inductor l 1 22n 0603 inductor l 2 15n 0603 note: 1. can be omitted at optimum dc supply
14 t7031 [preliminary] 4564f?wlan?07/04 evaluation board set-up institutions after connection of all cables (rf and dc): v cc , v 1 , v 2 = 3.3 v increase v ctrl until 75 ma quiescent current is reached (v ctrl ~ 1.55 v, at frequency = 2450 mhz, p in = -40 dbm) unmodulated measurements: ? measure gain, p out , pae, currents, v det versus p in , v ctrl , v cc , frequency modulated measurements: increase input power until desired linear output power is reached; this means in case of ? 11 mbps cck modulation apcr measurement: p out ~ 21 dbm ? 54 mbps ofdm modulation measurement of evm (error vector magnitude): p out ~ 15.5 dbm
15 t7031 [preliminary] 4564f?wlan?07/04 package information ordering information extended type number package remarks moq T7031-PEP qfn16 - 4 x 4 taped and reeled 1500 pcs. t7031-peq qfn16 - 4 x 4 taped and reeled 6000 pcs. T7031-PEPm qfn16 - 4 x 4 taped and reeled pb free, halogen free 1500 pcs. t7031-peqm qfn16 - 4 x 4 taped and reeled pb free, halogen free 6000 pcs. demoboard-t7031 ? evaluation board 1
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