1 of 8 optimum technology matching? applied gaas hbt ingap hbt gaas mesfet sige bicmos si bicmos sige hbt gaas phemt si cmos si bjt gan hemt functional block diagram rf micro devices?, rfmd?, optimum technology matching?, enabling wireless connectivity?, powerstar?, polaris? total radio? and ultimateblue? are trademarks of rfmd, llc. bluetooth is a trade- mark owned by bluetooth sig, inc., u.s.a. and licensed for use by rfmd. all other trade names, trademarks and registered tradem arks are the property of their respective owners. ?2006, rf micro devices, inc. product description 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. ordering information rf mems ldmos vdd output input RF2818 vsd RF2818 gps low noise amplifier with integrated input/output saw filters the RF2818 is a gps low noise amplifier with integrated saw filters at the input and output. low noise figure , along with high gain, achieved by the RF2818 makes it very suitable for compact gps receivers requiring reduced front-end noise and high sensitivity. this module builds upon rfmd?s leading edge phemt process and integrates input matching and low loss high rejection saw filters at both the input and output. this results in high performance and a reduced solution size. the ease of implementation simplifies the receiver design. the RF2818 is packaged in a compact 3.0mmx2.5mmx1.0mm package with only two external components re quired to achieve the best-in-class performance. features ? compact footprint: 3.0mmx2.5mmx1.0mm ? only two external compo- nents required ? no external dc blocking capacitors required - lowest bom cost and small solution size ? low noise figure: 1.55db (typ) ? high gain: 14db (typ) ? excellent linearity iip3: +6dbm (typ) ? integrated input and output saw filters for optimum pcs and cell band rejection: - cell: 101dbc (typ) - pcs: 74dbc (typ) ? operable over wide supply voltage range: 1v to 3.6v ? adjustable bias and shutdown capability applications ? cellular handsets ? personal navigation devices ds100714 ? package: module, 3.0mmx2.5mmx1.0mm RF2818gps low noise amplifier with integrated input/output saw filters RF2818 gps low noise amplifier with integrated input/output saw filters RF2818pcba-410 fully assembled evaluation board
2 of 8 RF2818 ds100714 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. absolute maximum ratings parameter rating unit v dd 3.6 v i dd 20 ma maximum input power - cw, v dd =2.7v, i dd =8.4ma +15 dbm p diss 72 mw max voltage on rf output (pin 8) +5 v t j (junction temperature) 150 c storage temperature -65 to +150 c operating temperature -40 to +85 c parameter specification unit condition min. typ. max. high current mode v dd = v sd =2.7v, i dd =7ma, temp=25c nominal operating conditions (unless other- wise specified) gain (g) 12.5 14 db noise figure (nf)* 1.55 1.95 db input p1db compressed power (ip1db) -6.0 dbm input 3rd order intercept point (2-tone at fc2.5mhz) +6 dbm input return loss (s11) -7.5 db output return loss (s22) -14 db reverse isolation (s12) -24 db cell band rejection (relative to 1575ghz at 827.5mhz 80 101 dbc pcs band rejection (relative to 1575mhz at 1885mhz) 70 74 dbc supply dc current at shutdown (sd) voltage vsd=2.7v (i dd ) 710ma ish (shutdown current) 0.40 ua caution! esd sensitive device. exceeding any one or a combination of the absolute maximum rating conditions may cause permanent damage to the device. extended application of absolute maximum rating conditions to the device may reduce device reliability. specified typical perfor- mance or functional operation of the devi ce under absolute maximum rating condi- tions is not implied. rohs status based on eudirective2002/95/ec (at time of this document revision). the information in this publication is believed to be accurate and reliable. however, no responsibility is assumed by rf micro devices, inc. ("rfmd") for its use, nor for any infringement of patents, or other rights of third parties, resulting from its use. no license is granted by implication or otherwise under any patent or patent rights of rfmd. rfmd reserves the right to change component circuitry, recommended appli- cation circuitry and specifications at any time without prior notice.
3 of 8 RF2818 ds100714 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. parameter specification unit condition min. typ. max. low current mode v dd = v sd =1.76v, i dd =4ma, temp=25c nominal operating conditions (unless other- wise specified) gain (g) 13.1 db noise figure (nf)* 1.7 db input p1db compressed power (ip1db) -6.5 dbm input 3rd order intercept point (2-tone at fc2.5mhz) +5.7 dbm input return loss (s11) -7.2 db output return loss (s22) -13 db reverse isolation (s12) -23 db cell band rejection (relative to 1575mhz at 827.5mhz 100 dbc pcs band rejection (relative to 1575mhz at 1885mhz) 72 dbc supply dc current at shutdown (sd) voltage vsd=2.7v (i dd ) 4ma ish (shutdown current) 0.40 ua
4 of 8 RF2818 ds100714 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. pin out package outline drawing pin function description 1rf in rf input 2gnd ground 3gnd ground 4gnd ground 5gnd ground 6gnd ground 7gnd ground 8rf out rf output 9vdd dc supply voltage 10 gnd ground 11 sd shutdown 12 gnd ground top view (3.0x 2.5 x 1.0)mm rf_in gnd gnd 1 2 3 45 6 7 8 9 12 11 10 gnd gnd gnd gnd rf out vdd gnd sd gnd
5 of 8 RF2818 ds100714 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. pcb metal land pattern pcb solder mask pattern pcb stencil pattern
6 of 8 RF2818 ds100714 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. application schematic evaluation board schematic RF2818 vdd input output c1 c2 1 sd 9 8 11 2, 3, 4, 5, 6, 7, 9, 10, 12 notes: - c1 forms the output matching network & should be placed as shown in the layout. - c2 is the decoupling capacitor and may or may not be required in the application (routing dependent). 100pf 12pf j2 rf out c2 100pf c1 0.1uf c3 12pf j1 rf in gnd gnd gnd gnd gnd gnd gnd sd gnd gnd 1 2 3 4 p1 sd gnd gnd vdd vdd gnd gnd gnd gnd rf in 1 gnd 2 gnd 3 gnd 4 gnd 5 gnd 6 gnd 7 rf out 8 vdd 9 gnd 10 sd 11 gnd 12 RF2818 u1
7 of 8 RF2818 ds100714 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. evaluation board layout assembly top in 1 in 2 back layout recommendations: c1 forms a part of the output match and placement of c1 is cr itical to achieving the best performance. place c1 as shown on the evb to achieve the performanc e specified in this data sheet.
8 of 8 RF2818 ds100714 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com.
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