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rev. 4534c?sige?10/03 features active mixer with conversion gain no external lo driver necessary low lo drive level required rf and lo ports may be driven single-ended single 5-v supply voltage high lo-rf isolation broadband resistive 50- ? impedances on all three ports applications infrastructure digital communication systems 1700 mhz to 2300 mhz receivers for cdma/pcs/dcs/umts base stations electrostatic sensitive device. observe precautions for handling. description the T0781 is a high linearity active mixer which is manufactured using atmel?s advanced silicon-germanium (sige) technology. this mixer features a frequency range of 1700 mhz to 2300 mhz. it operates from a single 5-v supply and provides 12 db of conversion gain while requiring only 0 dbm input to the integrated lo driver. an if amplifier is also included. the T0781 incorporates internal matching on each rf, if and lo ports to enhance ease of use and to reduce the external components required. the rf and lo inputs can be driven differentially or single-ended. figure 1. block diagram ifp ifn lop lon rfp rfn 4 5 13 1 16 12 1700 mhz - 2300 mhz high linearity sige active receiver mixer T0781 preliminary
2 T0781 [preliminary] 4534c?sige?10/03 pin configuration figure 2. pinning ssop16 ifn vcc gnd lop lon gnd vcc l2 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 ifp vcc gnd rfp rfn gnd vcc l1 pin description pin symbol function 1 ifp if positive output 2 vcc 5-v power supply 3 gnd ground 4 rfp rf positive input 5 rfn rf negative input 6 gnd ground 7 vcc 5-v power supply 8 l1 external inductor terminal 9 l2 external inductor terminal 10 vcc 5-v power supply 11 gnd ground 12 lon local oscillator, negative input 13 lop local oscillator, positive input 14 gnd ground 15 vcc 5-v power supply 16 ifn if negative output
3 T0781 [preliminary] 4534c?sige?10/03 absolute maximum ratings (1) all voltages are referred to gnd. parameters symbol value unit supply voltage v cc 5.5 v lo input lop, lon 10 dbm if input rfp, rfn 15 v operating temperature t op -40 to +85 c storage temperature t stg -65 to +150 c notes: 1. the device may not survive all maximum values applied simultaneously. thermal resistance parameters symbol value unit junction ambient r thja tbd k/w junction case r thjc 46 c/w electrical characteristics test conditions: v cc = 5 v, t amb = 25c, rf input: -40 db at 1880 mhz, lo input: 0 dbm at 1680 mhz no. parameters test conditions pin symbol 1700 to 2000 mhz operation 2000 to 2300 mhz operation unit type* min. typ. max. min. typ. max. 1 ac performance 1.1 rf frequency range for rf = 2000 to 2300 mhz operation, single- ended rf + lo drive is recommended 4, 5 f rf 1700 2000 2000 2300 mhz b, c 1.1 1 lo frequency range f lo 1400 2000 1700 2300 mhz b, c 1.2 if frequency range 1, 16 f if 30 200 300 30 200 300 mhz b, c 1.3 input ip3 rf1 = rf2 = -15 dbm/tone, 1mhz spacing 4, 5 iip3 12 15 12 15 dbm d 1.4 input p1db 4, 5 p1db 1 2 3 5 dbm d 1.5 conversion gain 1, 16 g912 69 dba *) type means: a = 100% tested, b = 100% correlation tested, c = characterized on samples, d = design parameter note: 1. the return losses shown were measured with the T0781 mounted on atmel?s fr4 evaluation boards using standard matching practices as indicated on the respective application schematic (see figure 23 on page 12 and figure 24 on page 14). users following the rf, lo and if matching guidelines will achieve similar performance.
4 T0781 [preliminary] 4534c?sige?10/03 1.6 ssb noise figure 1, 16 nf ssb 14 15 16 19 db d 1.7 rf return loss matched to 50 (1) 4, 5 rl rf 20 20 db d 1.8 lo return loss matched to 50 (1) 12, 13 rl lo 20 20 db d 1.9 if return loss matched to 50 (1) 1, 16 rl if 20 20 db d 1.1 0 lo drive matched to 50 12, 13 p lo -3 0 +3 -3 0 +3 dbm d 2 isolation performance 2.1 leakage (lo-rf) 12, 13 a lo-rf -60 -40 -30 -20 dbm d 2.2 leakage (lo-if) 12, 13 a lo-if -30 -20 -30 -20 dbm d 2.3 leakage (rf-if) -53 -40 -35 -25 dbm d 3 miscellaneous 3.1 supply voltage 2, 7, 10, 15 v cc 4.75 5.0 5.25 4.75 5.0 5.25 v a 3.2 supply current 2, 7, 10, 15 i cc 160 180 160 180 ma a electrical characteristics (continued) test conditions: v cc = 5 v, t amb = 25c, rf input: -40 db at 1880 mhz, lo input: 0 dbm at 1680 mhz no. parameters test conditions pin symbol 1700 to 2000 mhz operation 2000 to 2300 mhz operation unit type* min. typ. max. min. typ. max. *) type means: a = 100% tested, b = 100% correlation tested, c = characterized on samples, d = design parameter note: 1. the return losses shown were measured with the T0781 mounted on atmel?s fr4 evaluation boards using standard matching practices as indicated on the respective application schematic (see figure 23 on page 12 and figure 24 on page 14). users following the rf, lo and if matching guidelines will achieve similar performance.
5 T0781 [preliminary] 4534c?sige?10/03 1700 mhz to 2000 mhz: typical device performance figure 3. conversion gain versus temperature, p lo = 0 dbm figure 4. conversion gain versus lo drive, t amb = 25 c figure 5. leakages, p lo = 0 dbm at pins, p rf = -20 dbm at pins, t amb = 25 c conversion gain vs temperature plo = 0dbm 0.0 4.0 8.0 12.0 16.0 20.0 1400 1600 1800 2000 2200 frequency (mhz) conversion gain (db) -40oc +25oc +85oc conversion gain vs lo drive t=+25oc 0.0 4.0 8.0 12.0 16.0 20.0 1400 1600 1800 2000 2200 frequency (mhz) conversion gain (db) -3 dbm 0 dbm +3 dbm leakages plo=0 dbm at pins, prf=-20 dbm at pins, t=+25oc -80 -60 -40 -20 0 1400 1600 1800 2000 2200 frequency (mhz) leakage (dbm) lo-rf rf- if lo-if
6 T0781 [preliminary] 4534c?sige?10/03 figure 6. input ip3 versus temperature p lo = 0 dbm figure 7. input ip3 versus lo drive, t amb = 25 c figure 8. noise figure versus temperature, p lo = 0 dbm input ip3 vs temperature plo = 0dbm 10.0 12.0 14.0 16.0 18.0 20.0 1700 1750 1800 1850 1900 1950 2000 frequency (mhz) input ip3 (dbm ) -40oc +25o c +85o c input ip3 vs lo drive t=+25oc 10.0 12.0 14.0 16.0 18.0 20.0 1700 1750 1800 1850 1900 1950 2000 frequency (mhz) input ip3 (dbm ) -3 dbm 0 dbm +3dbm noise figure vs temperature plo=0dbm 10 12 14 16 18 20 1700 1750 1800 1850 1900 1950 2000 frequency (mhz) noise figure (db) -40oc +25o c +85o c
7 T0781 [preliminary] 4534c?sige?10/03 figure 9. rf and lo return loss, t amb = 25 c figure 10. if return loss, t amb = 25 c figure 11. input p1db versus temperature, p lo = 0 dbm rf & lo return loss (note 1) t=+25oc -30 -25 -20 -15 -10 -5 0 1400 1600 1800 2000 2200 frequency (mhz) return loss (db) rf rl lo rl if return loss (note 1) t=+25oc -30 -25 -20 -15 -10 -5 0 30 60 90 120 150 180 210 240 270 300 frequency (mhz) reutrn loss (db) input p1db vs temperature plo=0 dbm -5.0 -3.0 -1.0 1.0 3.0 5.0 1700 1750 1800 1850 1900 1950 2000 frequency (mhz) input p1db (dbm) -40oc +25o c +85o c
8 T0781 [preliminary] 4534c?sige?10/03 figure 12. input p1db versus lo drive, t amb = 25 c input p1db vs lo drive t=+25oc -5.0 -3.0 -1.0 1.0 3.0 5.0 1700 1750 1800 1850 1900 1950 2000 frequency (mhz) input p1db (dbm) -3 dbm 0 dbm +3dbm
9 T0781 [preliminary] 4534c?sige?10/03 2200 mhz to 2300 mhz: typical device performance, single-ended drive figure 13. conversion gain versus temperature, p lo = 0 dbm figure 14. conversion gain versus lo drive, t amb = 25 c figure 15. leakages, p lo = 0 dbm at pins, p rf = -20 dbm at pins, t amb = 25 c conversion gain vs temperature plo=0 dbm 0 4 8 12 16 20 2000 2100 2200 2300 2400 2500 frequency (mhz) conversion gain (db) -40oc +25o c +85o c conversion gain vs lo drive t=+25oc 0 4 8 12 16 20 2000 2100 2200 2300 2400 2500 frequency (mhz) conversion gain (db) -3 dbm 0 dbm +3 dbm leakages plo=0 dbm at pins, prf=-20 dbm at pins, t=+25oc -45 -40 -35 -30 -25 -20 1800 1900 2000 2100 2200 2300 2400 2500 frequency (mhz) leakage (dbm) lo-rf rf- if lo-if
10 T0781 [preliminary] 4534c?sige?10/03 figure 16. input ip3 versus temperature p lo = 0 dbm figure 17. input ip3 versus lo drive, t amb = 25 c figure 18. input p1db versus temperature, t amb = 25 c input ip3 vs tem perature plo=0dbm 10.0 12.0 14.0 16.0 18.0 20.0 2000 2050 2100 2150 2200 2250 2300 frequency (mhz) input ip3 (dbm ) -40oc +25o c +85o c input ip3 vs lo drive t=+25oc 10.0 12.0 14.0 16.0 18.0 20.0 2000 2050 2100 2150 2200 2250 2300 frequency (mhz) input ip3 (dbm ) -3 dbm 0 dbm +3 dbm input p1db vs temperature plo=0dbm 0.0 2.0 4.0 6.0 8.0 10.0 2000 2050 2100 2150 2200 2250 2300 frequency (mhz) input p1db (dbm) -40oc +25o c +85o c
11 T0781 [preliminary] 4534c?sige?10/03 figure 19. rf and lo return loss, v cc = 5 v, t amb = 25 c figure 20. if return loss, t amb = 25 c figure 21. input p1db versus temperature, p lo = 0 dbm rf & l o re t u r n l o s s ( no t e 1) vcc=5v, t=+25oc -35 -30 -25 -20 -15 -10 -5 0 1800 1900 2000 2100 2200 2300 2400 frequency (mhz) return loss (db) rf rl lo rl if return loss (note 1) t=25c -30 -25 -20 -15 -10 -5 0 30 75 120 165 210 255 300 frequency (mhz) reutrn loss (db) input p1db vs temperature plo=0dbm 0.0 2.0 4.0 6.0 8.0 10.0 2000 2050 2100 2150 2200 2250 2300 frequency (mhz) input p1db (dbm) -40oc +25oc +85oc
12 T0781 [preliminary] 4534c?sige?10/03 figure 22. input p1db versus lo drive, t amb = 25 c figure 23. 1700 mhz to 2000 mhz application schematic (differential drive) input p1db vs lo drive t=25c 0.0 2.0 4.0 6.0 8.0 10.0 2000 2050 2100 2150 2200 2250 2300 frequency (mhz) input p1db (dbm) -3 dbm 0 dbm +3 dbm 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 5v l1 vcc T0781 t1 ifout c2 c3 c4 vcc rfin l7 l9 c15 vcc c14 vcc vcc c12 vcc c13 c5 vcc loin ic1 j1 j2 j3 c6 c10 t2 c11 c7 t3 c1 c8
13 T0781 [preliminary] 4534c?sige?10/03 bill of materials (for 1700 mh z to 2000 mhz evaluation board) the T0781 utilizes an if tank circuit to maximize performance across the entire if band- width. the off-chip inductors l7 and l9 resonate with an on-chip capacitor (4 pf) to pro- vide if tunability. therefore, l7 and l9 must be selected such that the resonance occurs at the desired if. the following table provides the inductor values required on the evaluation board for some common intermediate frequencies. by default, all evaluation board are shipped with l7 = l9 = 100 nh, resulting in a 200 mhz resonant if. table 1. if tank circuit component designator value vendor part number description ic1 atmel T0781 sige receiver mixer j1, j2, j3 johnson components ? 742-0711-841 sma connector, end launch with tab, for 1.07 mm board t2, t3 1:1 panansonic ? ehf-fd1619 rf transformer t1 1:1 mini-circuits ? tc1-1 if transformer l1 1 h wrth elektronik ? 74476401 inductor, 1210 footprint, minimum 200 ma rating l7, l9 see table 1 wrth elektronik 744786110 inductor, 0603 footprint, high q series c1 10 f kemet ? t491a106_010as tantal chip capacitor, size a c4, c5, c12, c13 6.8 pf vishay ? vj0402a6r8jxxa_ capacitor, 0402 footprint c14, c15 100 pf vishay vj0402a101jxxa_ capacitor, 0402 footprint c2, c3 120 pf vishay vj0402a121jxxa_ capacitor, 0402 footprint c6, c10 2.7 pf vishay vj0402a2r7jxxa_ capacitor, 0402 footprint c7, c11 3.9 pf vishay vj0402a3r9jxxa_ capacitor, 0402 footprint c8 n.c. - - capacitor, 0402 footprint if (mhz) typical l7, l9 (nh) wrth elektronik part number 70 680 744780680 150 150 74478625 200 100 744786110 300 39 744786131
14 T0781 [preliminary] 4534c?sige?10/03 bill of materials (for 2000 mh z to 2300 mhz evaluation board) figure 24. demo test board (fully asembled pcb) figure 25. recommended package footprint component designator value vendor part number description ic1 atmel T0781 sige receiver mixer j1, j2, j3 johnson components 742-0711-841 sma connector, end launch with tab, for 1.07 mm board t2, t3 1:1 panansonic ehf-fd1619 rf transformer t1 1:1 mini-circuits tc1-1 if transformer l1 1 h wrth elektronik 74476401 inductor, 1210 footprint, minimum 200 ma rating l7, l9 see table 1 on page 13 wrth elektronik 744786110 inductor, 0603 footprint, high q series c1 10 f kemet t491a106_010as tantal chip capacitor, size a c4, c5, c12, c13 6.8 pf vishay vj0402a6r8jxxa_ capacitor, 0402 footprint c14, c15 100 pf vishay vj0402a101jxxa_ capacitor, 0402 footprint c2, c3 120 pf vishay vj0402a121jxxa_ capacitor, 0402 footprint c6, c10 2.2 pf vishay vj0402a2r2jxxa_ capacitor, 0402 footprint c7, c11 2.2 pf vishay vj0402a2r2jxxa_ capacitor, 0402 footprint c8 1 pf vishay vj0402a1r0jxxa_ capacitor, 0402 footprint
15 T0781 [preliminary] 4534c?sige?10/03 in order to avoid soldering problems, plugging of the ground vias under the heat slug is recommended! 3.0 3.0 6.35 31.75 6.9 0.74 0.74 0.7 0.9 0.4 0.33 via - indicates metalization - vias connect pad to underlying ground plane all units are in mm remark: heatslug must be soldered to gnd.
16 T0781 [preliminary] 4534c?sige?10/03 package information ordering information extended type number package remarks T0781-6c tssop16 ?
printed on recycled paper. disclaimer: atmel corporation makes no warranty for the use of its products, other than those expressly contained in the company?s standar d warranty which is detailed in atmel?s terms and conditions located on the company?s web site. the company assumes no responsibi lity for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time wi thout notice, and does not make any commitment to update the information contained her ein. no licenses to patents or other intellectual property of atmel are granted by the company in connection with the sale of atmel produc ts, expressly or by implication. atmel?s products are not aut horized for use as critical components in life support devices or systems. atmel corporation atmel operations 2325 orchard parkway san jose, ca 95131, usa tel: 1(408) 441-0311 fax: 1(408) 487-2600 regional headquarters europe atmel sarl route des arsenaux 41 case postale 80 ch-1705 fribourg switzerland tel: (41) 26-426-5555 fax: (41) 26-426-5500 asia room 1219 chinachem golden plaza 77 mody road tsimshatsui east kowloon hong kong tel: (852) 2721-9778 fax: (852) 2722-1369 japan 9f, tonetsu shinkawa bldg. 1-24-8 shinkawa chuo-ku, tokyo 104-0033 japan tel: (81) 3-3523-3551 fax: (81) 3-3523-7581 memory 2325 orchard parkway san jose, ca 95131, usa tel: 1(408) 441-0311 fax: 1(408) 436-4314 microcontrollers 2325 orchard parkway san jose, ca 95131, usa tel: 1(408) 441-0311 fax: 1(408) 436-4314 la chantrerie bp 70602 44306 nantes cedex 3, france tel: (33) 2-40-18-18-18 fax: (33) 2-40-18-19-60 asic/assp/smart cards zone industrielle 13106 rousset cedex, france tel: (33) 4-42-53-60-00 fax: (33) 4-42-53-60-01 1150 east cheyenne mtn. blvd. colorado springs, co 80906, usa tel: 1(719) 576-3300 fax: 1(719) 540-1759 scottish enterprise technology park maxwell building east kilbride g75 0qr, scotland tel: (44) 1355-803-000 fax: (44) 1355-242-743 rf/automotive theresienstrasse 2 postfach 3535 74025 heilbronn, germany tel: (49) 71-31-67-0 fax: (49) 71-31-67-2340 1150 east cheyenne mtn. blvd. colorado springs, co 80906, usa tel: 1(719) 576-3300 fax: 1(719) 540-1759 biometrics/imaging/hi-rel mpu/ high speed converters/rf datacom avenue de rochepleine bp 123 38521 saint-egreve cedex, france tel: (33) 4-76-58-30-00 fax: (33) 4-76-58-34-80 literature requests www.atmel.com/literature 4534c?sige?10/03 ? atmel corporation 2003 . all rights reserved. atmel ? and combinations thereof are the registered trademarks of atmel corporation or its subsidiaries, johnson components ? is a trademark of emerson electric co., panasonic ? is a registered trademark of matsushita electric indus- trial co., ltd., mini-circuits ? is a registered trademark of scientific components, wrth elektronik ? is a registered trademark of adolf wrth gmbh & co. kg, kemet ? is a registered trademark of krc trade corporation, vishay ? is a registered trademark of vishay intertechnology, inc. other terms and product names may be the trademarks of others.

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